THPSC —  Poster session C   (04-Oct-18   16:50—19:00)
Paper Title Page
THPSC01
 Results of Beam Dynamics Simulation for the Main Ring of the 4th Generation Light Source USSR  
 
  • V.S. Dyubkov, A.A. Makhoro, O.A. Mosolova, S.M. Polozov
    NRC, Moscow, Russia
  • A. Bolshakov
    ITEP, Moscow, Russia
  • V.S. Dyubkov, Y. Lozeev, T.A. Lozeeva, A.A. Makhoro, V.Yu. Mekhanikova, O.A. Mosolova, S.M. Polozov, V.I. Rashchikov, A.V. Samoshin
    MEPhI, Moscow, Russia
  • S.M. Liuzzo, P. Raimondi, S.M. White
    ESRF, Grenoble, France
  
  Funding: Project is supported by the Ministry of Science and Education of Russian Federation (agreement No 14.616.21.0086 from 24.11.2017, ID RFMEFI61617X0086)
The new 4th generation synchrotron light source USSR (Ultimate Source of Synchrotron Radiation) is under development at National Research Center "Kurchatov Institute" now. The full-scale 6 GeV storage ring is considered as the main part of USSR light source. Beam dynamics simulations shows that this ring, with 7BA magnet lattice, can provide the horizontal beam emittance close to (50-70) pm*rad. Currently, circumference of storage ring is about 1300 m because of considering magnets without combined functions. The general concept of the storage ring, its magnetic lattice and first beam dynamics simulation results will be discussed. 		 
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THPSC02
 Current Results of the 4th Generation Light Source USSR (Former SSRS4) Development  
MOXMH04   use link to access more material from this paper's primary paper code  
 
  • S.M. Polozov, I.A. Ashanin, S.V. Barabin, Y.A. Bashmakov, A.E. Blagov, D.K. Danilova, A.A. Dementev, V.V. Dmitriyeva, N.S. Dudina, V.S. Dyubkov, A.M. Feshchenko, Ye. Fomin, A. Gogin, M. Gusarova, Yu.D. Kliuchevskaia, V. Korchuganov, T. Kulevoy, M.V. Lalayan, D.A. Liakin, Y. Lozeev, T.A. Lozeeva, A.A. Makhoro, N.V. Marchenkov, S.V. Matsievskiy, V.Yu. Mekhanikova, O.A. Mosolova, A.Y. Orlov, A.V. Popova, A.I. Pronikov, V.I. Rashchikov, A.A. Savchenko, R.A. Senin, V.L. Shatokhin, A.S. Smygacheva, A.A. Tishchenko, V. Ushakov, A.G. Valentinov
    NRC, Moscow, Russia
  • I.A. Ashanin, Y.A. Bashmakov, D.K. Danilova, A.A. Dementev, V.V. Dmitriyeva, V.S. Dyubkov, A.M. Feshchenko, M. Gusarova, Yu.D. Kliuchevskaia, T. Kulevoy, M.V. Lalayan, Y. Lozeev, T.A. Lozeeva, A.A. Makhoro, S.V. Matsievskiy, V.Yu. Mekhanikova, O.A. Mosolova, A.S. Panishev, S.M. Polozov, A.V. Popova, A.I. Pronikov, V.I. Rashchikov, A.V. Samoshin, A.A. Savchenko, V.L. Shatokhin, A.A. Tishchenko
    MEPhI, Moscow, Russia
  • S.V. Barabin, A. Bolshakov, T. Kulevoy, D.A. Liakin, A.Y. Orlov
    ITEP, Moscow, Russia
  • Y.A. Bashmakov
    LPI, Moscow, Russia
  • J.C. Biasci, J.M. Chaize, G. Le Bec, S.M. Liuzzo, C. Maccarrone, H.P. Marques, P. Raimondi, J.-L. Revol, K.B. Scheidt, S.M. White
    ESRF, Grenoble, France
  
  Funding: Project is supported by Ministry of Science and Education of Russian Federation, Agreements 14.616.21.0086 from 24.11.2017, ID RFMEFI61617X0086, 14.616.21.0088 from 24.11.2017, ID RFMEFI61617X0088
The new project of 4th generation synchrotron light source called Ultimate Source of Synchrotron Radiation (USSR) today is under development at NRC Kurchatov Institute. A number of Russian institutions also take part in this project: NRNU MEPhI, NRC "Kurchatov Institute" - ITEP and others. The European Synchrotron Radiation Facility (ESRF, Grenoble, France) is the main international collaborator of the project. It is proposed that USSR include both a storage ring and soft FEL, and one linac will be used for injection in the storage ring and as a driver for the FEL. The preliminary design of 6 GeV storage ring with transverse emittance of 50-70 pm*rad is done. The general concept of the top-up linac is proposed and the beam dynamics is simulated. The injection system and the vacuum systems are studied. Current results of the USSR R&D will be presented in this report. 		 
slides icon Slides THPSC02 [5.520 MB]  
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THPSC03 The Tuning of the Accelarating Structure Utilizing Electrostatic Undulator 404
 
  • N.V. Avreline
    TRIUMF, Vancouver, Canada
  • S.M. Polozovpresenter
    MEPhI, Moscow, Russia
  
  The accelerating structure based on an electrostatic undulator is very attractive for bunching and acceleration of ribbon beams of light ions with beam current over 1 A. It also allows simultaneously accelerate two ion beams with positive and negative charged ions. This paper is presenting the analytical model of the accelerating structure. Also the paper is presenting the results of the simulation in ANSYS HFSS and the results of the experimental study of the mock-up of this structure that demonstrate the ways of tuning of the uniform transverse electrical RF field in its accelerating channel.  
poster icon Poster THPSC03 [0.514 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-RUPAC2018-THPSC03  
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THPSC04 New Superconducting Wigglers for KSRS 407
 
  • A.G. Valentinov, V. Korchuganov, V. Ushakov
    NRC, Moscow, Russia
  • S.V. Khrushchev, N.A. Mezentsev, V.A. Shkaruba, V.M. Tsukanov
    BINP SB RAS, Novosibirsk, Russia
  
  Presently a program of incorporation of two new superconducting wigglers into main ring of Kurchatov synchrotron radiation source is implemented in NRC Kurchatov Institute. The wigglers are intended for new experimental stations "Belok-2" (biology studies) and "VEU" (exploration of materials in extreme conditions). The wigglers are designed for maximal magnetic field 3 T with 48 mm period and contain 50 pairs of poles with maximum field. Technical details of wigglers' construction are presented in the report along with a description of testing and mounting procedures. An influence of the wigglers on beam dynamic is described.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-RUPAC2018-THPSC04  
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THPSC05 Superconducting 7 Tesla Wiggler for Delta Synchrotron Radiation Source 410
 
  • N.A. Mezentsev, A.V. Bragin, S.V. Khrushchev, V.K. Lev, A.N. Safronov, V.A. Shkaruba, O.A. Tarasenko, V.M. Tsukanov, A.A. Volkov, A.V. Zorin
    BINP SB RAS, Novosibirsk, Russia
  • S. Khan
    DELTA, Dortmund, Germany
  
  The multipole superconducting wiggler was designed, fabricated and successfully installed and tested on DELTA Synchrotron Radiation Source. The wiggler represents a multipole magnet with alternating high magnetic field of 7 Tesla along movement of particles in storage ring. The magnet is immersed into liquid helium of a special cryostat with working temperature of ~4.2K. The wiggler consists of 22 pairs of poles superconducting magnet with 18 full field poles, 2 with a three-quarter field strength and 2 with one-quarter field poles. The magnet array produces a sin-like magnetic field variation on the magnetic axis of the device with first and second field integrals close to zero. The Dortmund Electron Accelerator (DELTA, Germany) operated at 1.5 GeV synchrotron radiation source requires a superconducting wiggler as an insertion device for three x-ray beamlines with photon energies up to more than 30 keV. The wiggler has a period of 127 mm, magnetic field of 7 Tesla and the length from flange to flange of 2.2 m operated with zero boil-off mode. The conception and main approaches for the design of the magnetic and cryogenic system as well as the main parameters and the test results of new 7 Tesla superconducting wiggler for DELTA synchrotron light source are presented.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-RUPAC2018-THPSC05  
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THPSC06 New Automated Control System for the Kurchatov Synchrotron Radiation Source 414
 
  • N.I. Moseiko, Y.V. Efimov, Ye. Fomin, E.V. Kaportsev, V. Korchuganov, Y.V. Krylov, K. Moseev, A.S. Smygacheva, A.G. Valentinov
    NRC, Moscow, Russia
  • L.A. Moseiko, A.V. Shirokov
    RRC, Moscow, Russia
  
  The paper describes the new automated control system (ACS) for the Kurchatov syncrotron radiation source (KSRS), which is based on the modern servers and network equipment, VME equipment, National Instruments modules, time server, power equipment with built in intelligent controllers. The new system includes around 2300 control channels and 5900 measuring channels. Control programs that provide user interfaces, monitoring of the system operation, data acquisition, data processing and data storage, were developed using Citect SCADA 7.2, SCADA Historian Server, LynxOS Runtime, LabVIEW-2013, OC ARTX166, PCAN-Evaluation. The new ACS KSRS has allowed to increase the number of control and measuring channels, to increase the speed and accuracy of the measurements, to increase the speed of data processing and data transmitting. As a result, the main parameters of the KSRS have been improved and its work efficiency increased.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-RUPAC2018-THPSC06  
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THPSC07 VEPP-5 Injection Complex Control System Base Software Upgrade 417
 
  • D. Bolkhovityanov, F.A. Emanovpresenter
    BINP SB RAS, Novosibirsk, Russia
  
  VEPP-5 Injection Complex control system software is based on CX framework. In the course of 2015-2016 it was upgraded to version 4. K500 transport channel (delivering e+/e− beams to VEPP-2000 and VEPP-4) has switched to CXv4 in 2017-2018. CXv4 is a redesign from the ground up, built in a modular fashion with maximum flexibility in mind. CXv4 server is easily configurable via plaintext files. Additionally, server configuration can be autogenerated from a database containing high-level information on the facility. CXv4 server supports artificial "mailbox" channels, which are used by high-level facility management software for intercommunication. For client-level access, a high-performance binding for Python exists, and visual programming tools are being developed.  
poster icon Poster THPSC07 [0.404 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-RUPAC2018-THPSC07  
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THPSC08 Development of Hardware and Software for the Slow Extraction System Using Crystal Deflectors 420
 
  • S.F. Reshetnikov, A.G. Afonin, E.V. Barnov, A.L. Levin, M. Ukhanov
    IHEP, Moscow Region, Russia
  
  The review is devoted to hardware and software products developed to serve working complex of extraction system by means of crystalline deflectors on the synchrotron U-70 IHEP.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-RUPAC2018-THPSC08  
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THPSC09 Media Server for Video and Audio Exchange Between the U-70 Accelerator Complex Control Rooms: Current Status and Perspectives 423
 
  • I. Lobov, V. Gotman
    IHEP, Moscow Region, Russia
  
  The dispatching system for audio and video exchange between various U-70 technological subsystems has been developed. The system architecture employs the original approach to the online streaming using the method of progressive download over HTTP. The system can be built on the basis of any one-pass decoding media container. Ogg format with Theora/Vorbis codecs has been chosen as an appropriate container. The system is designed as a distributed software complex and consists of several executive components: Retransmitter, a number of Media Stream Coders and a number of clients. All the components can run either on separate computers or on the same computer. Media stream Coders consume streams from media sources, turn it into Ogg stream and send it out to Retransmitter. The possible media sources are: IP-cam, web-cam, computer screen along with microphone. A client is able connect to Retransmitter using any web-browser with Ogg Theora/Vorbis support. The range of values 250-350 ms has been achieved for the latency between real action and client video. The developed software is a framework for diverse media exchange systems that could be built on it's basis. Several possible applications are discussed in the scope of the U-70 Accelerator Complex technological needs. This could play an important role in personnel safety system while perform maintenance tasks in an extreme work environments such as the Beam Channel.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-RUPAC2018-THPSC09  
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THPSC10 Development of Modern Digital Synchronization Modules at BINP 426
 
  • Ya.M. Macheret, G.A. Fatkin, E.S. Kotov, A.N. Selivanov, M.Yu. Vasilyev
    BINP SB RAS, Novosibirsk, Russia
  • G.A. Fatkin, E.S. Kotov, M.Yu. Vasilyev
    NSU, Novosibirsk, Russia
  
  Modern digital synchronization system for big physical facilities is developed at BINP. It allows synchronizing the spatially distributed control devices with an accuracy of ±2 ns and low jitter (< 100 ps). Accurate time distribution and delay compensation is provided, as well as an ability to react to external events with a determined latency. Two modules are used in this subsystem: S-Timer and L-Timer. S-Timer provides a synchronized 250 MHz clock signal with embedded events data through the optical link to nine L-Timers or S-Timers. L-Timer decodes the signal from the optical link and provides synchronization pulses to final control devices.  
poster icon Poster THPSC10 [0.605 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-RUPAC2018-THPSC10  
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THPSC11 Present Status of VEPP-5 Injection Complex IT Infrastructure 429
 
  • F.A. Emanov, D. Bolkhovityanov, P.B. Cheblakov, Ya.V. Pisarev
    BINP SB RAS, Novosibirsk, Russia
  
  VEPP-5 injection complex (IC) is an electron and positron beam source for VEPP-4 and VEPP-2000 experimental facilities. Continuous IC operation requires its control system infrastructure to provide high availability to all services. In order to make high availability possible and increase flexibility of control system, networks and servers were built from scratch, modern virtualization technologies being applied. The injection complex control system infrastructure is based on OS Linux and other open source software. The paper presents the architecture and implementation of the injection complex computer infrastructure.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-RUPAC2018-THPSC11  
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THPSC12 Upgrade of Application-Level Software of VEPP-5 Injection Complex 432
 
  • F.A. Emanov, V.V. Balakin, D.E. Berkaev, D. Bolkhovityanov
    BINP SB RAS, Novosibirsk, Russia
  • Yu. A. Rogovsky
    Budker INP & NSU, Novosibirsk, Russia
  
  VEPP-4 and VEPP-2000 experimental facilities are fed with e+e− beams from VEPP-5 injection complex(IC). Application-level software of IC control system is based on CXv4 framework. This software includes a set of engineering and debugging tools for all the hardware, a database with high-level information and configuration tools, machine mode manipulation system, automatic control and data analysis programs. The software architecture and implementation is described.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-RUPAC2018-THPSC12  
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THPSC13 Control System User Interface for the Cyclotron DC-280 435
 
  • V. Badmatsyrenova, V.V. Aleinikov, K.P. Sychev
    JINR/FLNR, Moscow region, Russia
  • S. Pachtchenko
    JINR, Dubna, Moscow Region, Russia
  
  At the end of 2018 new isochronous cyclotron DC-280 will be put into operation at the FLNR, JINR. The distributed control system consists of about 10000 process variables and has developed using LabVIEW DSC module. Based on our experience of many similar projects it was developed the technology to build interface for effective operation and control of the machine. This paper describes basic principles and functions that we applied for user interface.  
poster icon Poster THPSC13 [1.265 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-RUPAC2018-THPSC13  
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THPSC14
 Update of the VEPP-2000 Control System  
 
  • A.I. Senchenko, D.E. Berkaev, A.P. Lysenko, Yu. A. Rogovsky, P.Yu. Shatunov, O.S. Shubina, M.V. Timoshenko
    BINP SB RAS, Novosibirsk, Russia
  • Yu. A. Rogovsky, A.I. Senchenko, O.S. Shubina
    NSU, Novosibirsk, Russia
  
  In the beginning of 2016, electron-positron collider VEPP-2000 was recommisioned after long shutdown. During this shutdown the wide range of systems were upgraded. The main goal of the improvements is to reach and exceed design luminosity in the whole energy range from 200 MeV to 1000 MeV per beam. This paper present improvment made in ifrastracture, software and hardware during commissioning phase and 2016-2018 data-taking runs. Plan and future developments are also disscused.  
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THPSC15
 The Distributed Monitoring System for Local Controllers of Linear Induction Accelerator  
 
  • A.O. Baluev, A.M. Batrakov, G.A. Fatkin
    BINP SB RAS, Novosibirsk, Russia
  • G.A. Fatkin
    NSU, Novosibirsk, Russia
  
  The control system of a Linear Induction Accelerator (LIA-20) consists of 40 local controllers, distributed along the total length of about 100 meters. These controllers are based on VME-BINP crates. The system should provide high reliability of operation in conditions of strong electromagnetic noise and radiation. The developed monitoring system that allows registering value and deviations on the VME supply rails, measures temperature and other peripheral parameters is discussed in this paper. Monitoring devices are connected by a CAN bus equipped with independent backup power supply. The central program performs periodic polling of the monitored devices to obtain the actual measured values, store it in a database and notify the operator in case of faults.  
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THPSC16 Low-Level RF Control at Light Ions Injector for NICA 437
 
  • S.V. Barabin, T. Kulevoy, D.A. Liakin, A.Y. Lukashin
    ITEP, Moscow, Russia
  • K.A. Levterov
    JINR, Dubna, Russia
  
  Light ion injector for future NICA project contain several resonator: buncher, RFQ, Alvarez-type linac LU-20, and possibly debuncher, that all work on same resonant frequency 145.2 MHz. Base frequency for all resonators in injector produced by LU-20 linac, worked in self-excited loop mode. Low-level RF control system of injector should capture RF signal from LU-20 linac within front of signal and generate output RF signals with same frequency on others resonators, with regulated phase difference between channels. Additionally, low-level RF control system should tune resonant frequencies of RFQ, buncher and debancher. Presented LLRF system was successively work within several years. LLRF controllers design, possibilities, and key stabilization techniques are presented.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-RUPAC2018-THPSC16  
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THPSC17 Emittance Measurements of Polarized Ion Beams Using a Pepper-Pot Emittance Meter 440
 
  • S.V. Barabin, A.V. Kozlov, T. Kulevoy, D.A. Liakin, A.Y. Lukashin, D.N. Selesnev
    ITEP, Moscow, Russia
  • A. Belov
    RAS/INR, Moscow, Russia
  • V.V. Fimushkin
    JINR, Dubna, Moscow Region, Russia
  
  An Source of Polarized Ions (SPI), developed at JINR, produces pulsed beams of polarized protons and deuterons for NUCLOTRON accelerator. The accelerated polarized ion beams will be injected into future NICA collider. In order to reconcile requirements of a RFQ fore-injector of the Alvarez type linear accelerator LU-20, it is necessary to measure a transverse emittance of the ion beams produced by the SPI. The emittance of beams of polarized deuterons and polarized protons was measured by the pepper-pot method. The results of measurements of the emittance and profile of the polarized ion beams are presented.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-RUPAC2018-THPSC17  
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THPSC18 Pepper-Pot Emittance Metasurements 443
 
  • S.V. Barabin, A.V. Kozlov, T. Kulevoy, D.A. Liakin, A.Y. Lukashin, D.N. Selesnev
    ITEP, Moscow, Russia
  
  The pepper-pot emittance measuring device was developed to determine the parameters of the ion source beam. It includes a "pepper-pot" mask, a scintillation screen, a charge-coupled device (CCD) recorder, a personal computer (PC), software for data processing, calculation of beam profile and emittance. Measurements of emittance by pepper-pot method have been successfully carried out on several ion sources, at ITEP and JINR. The pepper-pot measurement method, the emittance meter design, and the emittance calculation technics are presented.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-RUPAC2018-THPSC18  
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THPSC19 The Bunch Size Measurements in the Storage Ring SIBERIA-2 446
 
  • A.S. Smygacheva, V. Korchuganov, A.I. Stirin
    NRC, Moscow, Russia
  
  An interaction of particles with each other and electromagnetic fields produced by an external source and the bunch in the vacuum chamber defines the electron bunch sizes in the storage ring. To research the influence of the bunch-chamber interaction on the longitudinal motion of electrons and to estimate the relative contribution of the observed effects, the measurements of bunch sizes and a bunch current spectrum were carried out in the storage ring SIBERIA-2. Results of measurements and analytical estimations are presented at this article.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-RUPAC2018-THPSC19  
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THPSC20 Some Development Aspects of Control and Diagnostic Systems for Fourth-Generation Russian Synchrotron Radiation Source 450
 
  • D.A. Liakin, S.V. Barabin, T. Kulevoy, A.Y. Orlov, M.S. Saratovskikh
    NRC, Moscow, Russia
  
  Funding: The work is carried out under the support of Russian Ministry of Education and Science contract 14.616.21.0088 at 24/11/2017 (RFMEFI61617X0088)
A fourth-generation synchrotron radiation source assumed as a powerful instrument of mega science program in Russia. Recently divisions of Kurchatov institute supports this project by detailed study of parameters of beam diagnostics and a supervisor control system. The actual status of this study is presented. 		 
poster icon Poster THPSC20 [1.184 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-RUPAC2018-THPSC20  
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THPSC21
 Absolute Monitors Based on Ionization Chambers With Longitudinal and Transverse Electric Fields  
 
  • V.V. Pashuk, N.A. Ivanov, O.V. Lobanov
    PNPI, Gatchina, Leningrad District, Russia
  
  Modifications (varieties) of absolute monitors providing the measurement of the total number of protons in the energy range of 50 - 1000 MeV, in the flux range of 106 - 1011 s−1, with the beam size ranging from 0.6 to 20 cm were developed and subjected to thorough examination for the purposes of radiation testing of electronic products on the PNPI synchrocyclotron. A two-section air-filled ionization chamber operating at normal pressure is used as a detector. It consists of two ionization chambers with different interelectrode distances combined into one module. In different structural versions of the module, the direction of the proton beam can be either perpendicular or parallel to the electrodes of the chamber. The number of protons passing through the detector is calculated using the developed algorithm in real time. Experimental data on the total number of protons and the average value of the proton flux is recorded by the electronic measuring stand.  
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THPSC22 Longitudinal Beam Measuruments on Damping Ring BINP's Injection Complex With New Resonator 453
 
  • V.V. Balakin, D.E. Berkaev, V.M. Borin, F.A. Emanovpresenter, O.I. Meshkov
    BINP SB RAS, Novosibirsk, Russia
  • F.A. Emanovpresenter
    NSU, Novosibirsk, Russia
  
  Injection Complex VEPP-5 feeds two BINP's colliders - VEPP-4M and VEPP-2000 with the electron and positron beams. 700 MHz 64-harmony damping ring resonator was replaced with 10.94 MHz first harmonic one in 2017. The key parameters for IC damping ring are particles storage rate and extraction beam parameters. In order to figure out how collective beam effects influence them with the new resonator we explore longitudinal beam distribution during the injection and storage. The results of research will be presented at this paper.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-RUPAC2018-THPSC22  
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THPSC23 Low Energy "Pepper-Pot" Emittance Measuring Device 456
 
  • V.S. Klenov, S. Bragin, O. Volodkevich, V. Zubets
    RAS/INR, Moscow, Russia
  
  The device which includes the "pepper-pot" mask, the quartz screen, and the CCD camera was used for measure the transverse emittances of beam at the exit of H-minus ion source for 7-15 keV beam energy. Emittance measuring at such low ions energy required low-level signals from quartz screen to be recorded and processed, while the intense glow of the gas discharge plasma created a spurious illumination of the quartz screen. The issues of obtaining sufficient signal level at such low ions energy, methods of subtracting the signal of non-ion-beam illumination of quartz screen from the full amplitude of the signal as well as issues of data processing and presentation of phase portraits are discussed.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-RUPAC2018-THPSC23  
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THPSC24 Fast Wire Scanners for U-70 Accelerator of IHEP 459
 
  • V.T. Baranov, V.N. Gorlov, D.A. Savin, V. Terekhov
    IHEP, Moscow Region, Russia
  
  The fast wire scanners are used for the transverse beam profile measurement in horizontal and vertical planes at the IHEP U-70 Accelerator. They cover the total range of operating beam intensities and energies of the circulating of proton and ion beams. The scheme of the scanners is based on a rotary brushless servomotor produced by the "Faulhaber" company. The speed of the fork with the carbon fiber is 16 m/s. The rotation mechanism and the control electronics was done to take into account the available radiation levels at the locations of the wire scanners. This report gives the mechatronic design of the wire scanners and provides a system overview.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-RUPAC2018-THPSC24  
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THPSC26
 Measurement of Beam Parameters in VEPP-2000 Using the Beam History Envelope Analysis  
 
  • Yu. A. Rogovsky
    BINP SB RAS, Novosibirsk, Russia
  
  The analysys of the turn-by-turn coherent bunch oscillations introduced by fast single kick of the electrons at energy 350 MeV are presented in the paper. The bunch tunes was measured while the kick strength changes. The analysis of the bunch oscillations envelope was used for the beam parameters estimations - chromaticity, detuning, damping rates. The obtained energy spread was compared with the values obtained with different techniques. The results in a good agreement with predictions.  
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THPSC27 Longitudinal Beam Profile Diagnostic System at Booster of Electrons and Positrons BEP 462
 
  • M.V. Timoshenko, E. Perevedentsev, Yu. A. Rogovsky, D.B. Shwartz, Yu.M. Zharinov
    BINP SB RAS, Novosibirsk, Russia
  • D.B. Shwartz
    NSU, Novosibirsk, Russia
  
  The longitudinal beam profile measurement system based on optical dissector was upgraded at booster synchrotron BEP during VEPP-2000 collider complex 2017/2018 data taking run. New RF-cavity of 13-th harmonic was installed during the booster upgrade in 2013-2015 to increase top energy to 1 GeV. The complex work on synchrotron radiation output modernization was performed, and measurement system was commissioned. The system was tested and calibrated, the resolution was studied. The bunch length dependence was measured for different RF cavity voltages while beam current changes and compared with the potential well distortion model. Good agreement with theory proved system operability. In addition the results of bunch length current dependence obtained by dissector at VEPP-2000 collider were compared with streak-camera measurements being in a good agreement. The synchrotron tune dependence on RF-cavity voltage was measured both at BEP and VEPP.  
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DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-RUPAC2018-THPSC27  
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THPSC28 A System for Monitoring Beam Losses at the IHEP U-70 Accelerator 466
 
  • V.I. Terekhov, G.M. Antonichev, V.T. Baranov, D.A. Savin, E.A. Syshchikov
    IHEP, Moscow Region, Russia
  • V.A. Kokovin
    SUD, Dubna, Moscow region,, Russia
  
  Updated beam monitor system executes continuous monitoring surveillance beam losses around the IHEP U­70 accelerator. The system consists of 120 detectors. One is located upstream of each bending magnet in the median plane outside of the beam-pipe at 60 cm apart. The detectors are cheap ion chambers filled with air under barometric pressure and 1.8 liter volume. Chamber signals processing is based on digital integration and done in the framework of the U­70 Control System. Acquired data are used to facilitate tuning of the accelerator, minimize beam losses at any point of the machine circumference and consequently decrease damage for accelerator equipment. This report gives a brief description of the system and the result of run experience as an example.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-RUPAC2018-THPSC28  
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THPSC29 Measurements of Energy Spread at VEPP-4M 469
 
  • V.M. Borin, V.A. Kiselev, O.I. Meshkov, S.A. Nikitin, P.A. Piminov, S.V. Sinyatkin
    BINP SB RAS, Novosibirsk, Russia
  • V.L. Dorokhov
    BINP, Novosibirsk, Russia
  • A. V. Smirnov
    GPI, Moscow, Russia
  
  The unique feature of the VEPP-4M electron-positron collider is wide energy range (1 - 4.75 GeV) available for experiments in high-energy physics. Energy spread value of the beam is an important parameter in a choice of energy step during measurement of e+e− -> hadrons cross sections as well as it has a strong influence on the statistic collection time required for the scanning of narrow resonances like planned for the nearest future scan of Upsilon(2s) meson. Thus, it is important to control energy spread of the beam and measure it operatively and reliably. The paper presents measurements of the beam energy spread at the VEPP-4M electron-positron collider in its complete energy range. Energy spread was calculated from bunch length measured by "PS-1/S1" streak camera with picosecond temporal resolution. In order to exclude the influence of collective effects on bunch length, we measured length of low-intensity bunch. Values of energy spread calculated from bunch length were checked by the measurements of energy spread based on registration of beam decoherence. The impact of the Touschek effect in the beam energy spread at low energy range (1.0 - 1.5 GeV) is discussed.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-RUPAC2018-THPSC29  
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THPSC30
 Ultrahigh Vacuum Stand of IHEP and the Production of Various Types of Beam Loss Detectors  
 
  • A.V. Koshelev, A. Larionov, V.S. Seleznev, M. Sleptsov
    IHEP, Moscow Region, Russia
  • V. Grishin
    ESS, Lund, Sweden
  • A. Sytin
    SUD, Dubna, Moscow region,, Russia
  
  In 2006 team at IHEP designed and built a special ultrahigh-vacuum stand for production of the beam loss monitors with a successful collaboration between CERN and the Institute for High Energy Physics in Protvino. The first detectors were ionization and secondary emission monitors for the Large Hadron Collider. During the last 10 years the detectors protects the LHC machine without detector parameters degradation and LHC damage. Later the other types of detectors had been developed and produced in IHEP: little Ionization chambers and flat ionization monitors. Flat ionization chamber had been developed special for CERN Booster. In 2018 the line of detectors replenished with a new type of monitor, proportional chamber with higher sensitivity. For this development the vacuum stand had been modified. In 12 years stand is supporting in working condition with regular testing and controlling of vacuum parameters. The stand parameters, the possibility of production of different types and forms, the detectors characteristics had been shown.  
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THPSC33 Radiation Installation and Accelerator UELV-10-10-C-70 Beam Parameters Control, Management and Registration System 472
 
  • P.A. Bystrov, A. A. Kozlov, Y.S. Pavlov, I. Yakupov
    IPCE RAS, Moscow, Russia
  • A.V. Prokopenko
    MEPhI, Moscow, Russia
  • N.E. Rozanov
    MRTI RAS, Moscow, Russia
  
  Irradiation of medical products on radiation installations based on electron beam is a responsible task. To increase the quality of irradiation, continuous monitoring of the installation operation is necessary. The design of the system for monitoring and recording parameters of a radiation-technological installation based on the UELV-10-10-C-70 accelerator at IPCE RAS is presented. The monitoring system collects data in real time with number of sensors and performs its analysis and registration, informs about errors and stops the irradiation process in emergency situations. A simple solution for transferring data from sensors to a computer, which traditionally remains a bottleneck in technology, is proposed. An important task of the control system is to determine the parameters of the accelerator beam, such as pulse current and energy spectrum. Various methods, based on simple equipment, for determining the energy spectrum of accelerator beam, which can be used for continuous monitoring without interrupting the production process, are proposed. A computational model is developed for processing the results of measurements in these methods, using the computer code "Beam Scanning". In current version of the system the data about the conveyor movement, scanning system deflecting magnet current and accelerator state is collected. The beam spectrum sensor based on the Faraday cylinder is in the process of development.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-RUPAC2018-THPSC33  
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THPSC34 Modern Beam Monitoring Systems During SEE Testing on ISDE&JINR Heavy Ion Facilities 475
 
  • A. Issatov, A.I. Krylov
    JINR/FLNR, Moscow region, Russia
  • V.S. Anashin
    United Rocket and Space Corporation, Institute of Space Device Engineering, Moscow, Russia
  • P.A. Chubunov
    ISDE, Moscow, Russia
  • I.V. Kalagin, S.V. Mitrofanov, Yu.G. Teterev
    JINR, Dubna, Moscow Region, Russia
  
  Creation results of new beam monitoring systems during SEE testing on ISDE&JINR heavy ion facilities will be presented. Diagnostic systems of ion beam parameters were modernized at beam-lines for electronic tests at FLNR accelerator complex. Scintillation detectors based on flexible optical fibers, multichannel and 15-channel beam profile detectors and energy measurement system for the high energy beam-line based on U400M were created.  
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DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-RUPAC2018-THPSC34  
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THPSC35 Influence of Mechanical Vibrations on the Phase Resolution of Bunch Shape Monitor 477
 
  • D.A. Chermoshentsev, S.A. Gavrilov
    MIPT, Dolgoprudniy, Moscow Region, Russia
  • D.A. Chermoshentsev
    Skoltech, Moscow, Russia
  • D.A. Chermoshentsev, A. Feschenko, S.A. Gavrilov
    RAS/INR, Moscow, Russia
  
  Bunch Shape Monitor with three changeable deflectors was designed and manufactured for UNILAC, CW LINAC and proton linac of GSI-FAIR project. The length of BSM RF-deflector for UNILAC was large, that increased the influence of external mechanical vibrations on the BSM operation. The model for mechanical and electrical analysis of BSM RF-deflector and design solutions for vibration damping are presented.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-RUPAC2018-THPSC35  
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THPSC36 Experimental Study of the Transverse Beam Size Used a Fast Wire Scanner in the U70 at IHEP 480
 
  • V.A. Kalinin, V.T. Baranov, G.V. Khitev, O.P. Lebedev
    IHEP, Moscow Region, Russia
  
  Results of experimental study of the transverse beams size in the U70 synchrotron based on a fast wire scanner are given. Measurements of the transverse beam size were carried out at three special points of the U-70 synchrotron magnetic cycle: on the injection flat top (1.3 GeV proton, 0.455 GeV/u carbon); in the region of the transition energy (7.959 GeV proton); on the main flat top (49 GeV proton). Results of the fast wire scanner approbation for determination of transverse injection errors and evaluating transverse feedback efficiency are presented.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-RUPAC2018-THPSC36  
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THPSC37 Photo-Activation Method for Electron Energy Determination of Linear Accelerator 483
 
  • S.V. Mitrofanov, V.V. Kobets, V. Shabratov, Yu.G. Teterev
    JINR, Dubna, Moscow Region, Russia
  • A.E. Brukva
    JINR/DLNP, Dubna, Moscow region, Russia
  • M. Krmar
    University of Novi Sad, Faculty of Sciences, Novi Sad, Serbia
  • T.V. Tetereva
    MSU SINP, Moscow, Russia
  
  Unknown energy of electron beam of linear accelerator was estimated by photo activation of only one activation detector - foil of natural indium. Three different photonuclear reactions were considered: 115In(gamma, gamma')115mIn, 115In(gamma, n)114mIn and 115In(gamma, 2n)113mIn. Ratio of saturation activities R(113mIn)/R(115mIn) and R(114mIn)/R(115mIn) were determined by standard gamma spectroscopy in electron energy region of interest (10 MeV - 23 MeV) using indium foils exposed in the FLNR microton MT25 bremsstrahlung beam. The choice of cyclic accelerator MT25, as a reference machine, was made due to the fact, that the energy of its electrons is known with accuracy not worse than 1%. Same ratios of saturation activities were determined after exposition of In activation detectors in photon beam of linear accelerator. The fact that both irradiations, by microton MT25 and accelerator, were performed in identical geometry using same target (3 mm of Tungsten) allowed us to estimate electron energy of accelerator by comparison of ratios of saturation activities obtained by both machines. Small variation in accelerator electron current was taken in consideration.  
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DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-RUPAC2018-THPSC37  
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THPSC38 Optical Fiber Based Beam Loss Monitor for the BINP e−e+ Injection Complex 486
 
  • Yu.I. Maltseva, V.G. Prisekin
    BINP SB RAS, Novosibirsk, Russia
  
  A distributed optical fiber based beam loss monitor has been implemented for the Budker INP Injection Complex designed to accelerate and store electron and positron beams up to 500 MeV. The principle of the device operation consists in detecting the Cherenkov radiation generated in an optical fiber by relativistic charged particles produced in an electromagnetic shower when beam hits the accelerator vacuum chamber wall. Single optical fiber section can cover the entire accelerator instead of using a large number of local beam loss monitors. Timing of optical signal gives the location of the beam losses along the beamline. In this paper summary of the monitor application at the BINP Injection Complex is given. Methods to improve monitor spatial resolution are discussed.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-RUPAC2018-THPSC38  
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THPSC39 Luminescent Diagnostics for Low Intensity Proton Beams at INR RAS Linac 489
 
  • A.I. Titov, S.A. Gavrilov
    RAS/INR, Moscow, Russia
  • S.A. Gavrilov, A.I. Titov
    MIPT, Dolgoprudniy, Moscow Region, Russia
  
  INR RAS linear accelerator is a high-intensity accelerator, mostly used for isotopes production and neutron experiments. However low-intensity beam research is also presented at INR linac and requires appropriate diagnostics, such as luminescent diagnostics, which is implemented at a new proton irradiation facility. Pros and cons of the diagnostic system, operational characteristics and different experimental beam tests are discussed.  
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DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-RUPAC2018-THPSC39  
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THPSC40 Multianode Gas Counter for Low Intensity Beam Diagnostics at the INR Linac 492
 
  • A.A. Melnikov, S.A. Gavrilov
    RAS/INR, Moscow, Russia
  • S.A. Gavrilov, A.A. Melnikov
    MIPT, Dolgoprudniy, Moscow Region, Russia
  
  Multianode gas counter is used to measure beam intensity in ionization mode and profiles in proportional mode at a new INR RAS proton irradiation facility. A special model is created in COMSOL to simulate operational characteristics of this counter. A program for data acquisition and processing is based on LabVIEW. Operational characteristics of the counter and experimental results of beam measurements are presented. Upgrade of the existing software and hardware is discussed.
Journal of Physics Conference series. Development of proton irradiation facility at INR Linac. S.E. Bragin, S. Gavrilov, A. Melnikov et al.
 		 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-RUPAC2018-THPSC40  
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THPSC41
 X-Ray Sampling Calorimeter for Bunch Length Measurement  
 
  • A.S. Gogolev, V.G. Kiziridipresenter, R.O. Řežaev, A.V. Vukolov
    TPU, Tomsk, Russia
  
  Funding: The Federal Targeted Program of the Russian Federation agreement no. 14.578.21.0198 (RFMEFI57816X0198) and the Competitiveness enhancement program of Tomsk polytechnic university
The challenge of reliable measurement and diagnostics of extremely short electron bunches is of crucial importance for commissioning and operation of the accelerators like a FELs and colliders. A method widely applied for bunch length diagnostics is Coherent Radiation Diagnostics (CRD)*. Radiation is emitted coherently if the wavelength is in the order of the bunch length, i.e. information about bunch length and shape is encoded in the emission spectrum which is exploited in CRD. For bunch lengths in the order of hundreds of femtoseconds, the Far-Infrared wavelength region is of interest. It is propose to extend the range of CRD up to attoseconds by using radiation in X-ray region, but for this our will need to register of high intensity X-ray pulses. The goal of this work is developed of technic and setup for bunch length measuring based on registration of high intensity X-ray pulses by sampling calorimeter. A numerical experiment was carried out in Geant 4. 30 KeV rays fall on the detector, which is assembled of the 20 layers interleaved scintillator BC-418 and A1. Thick of each layer is 1 mm and transverse size is 3X3 mm.
*O. Grimm, Proc. PAC'07, Albuquerque (USA), THYC02 (2007) 		 
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THPSC42 Numerical Investigation of the Influence of the Magnetic Field in the Ion Source with the Penning Discharge of a Gas-Filled Neutron Tube on the Ion Current Pulse 495
 
  • D.S. Stepanov, E. Shkolnikov
    National Research Nuclear University (MEPhI), Moscow, Russia
  • A. Agafonov
    LPI RAS, Moscow, Russia
  
  Funding: The work was supported by the Ministry of Science and Education of the Russian Federation under the agreement No. 14.575.21.0169 (RFMEFI57517X0169).
The report examines the influence of the distribution and intensity of a magnetic field in the ion source with the Penning discharge of a gas-filled neutron tube on the ion current pulse. The study was carried out by means of numerical modeling using the KARAT code*. The ion source has a length of 1.1 cm, the length of the anode is 0.6 cm with its diameter of 1.1 cm. Atomic deuterium is used at a pressure of 1 mTorr as the residual gas. A ring-shaped hot cathode with an electron current of 10 mA is considered as the discharge trigger. The anode voltage pulse has an amplitude of 2.5 kV and a front of 0.5 mks. The magnetic field is created by a 1.1 cm long solenoid with a diameter of 2.3 cm. The base case with respect to which the magnetic field ranged has an ion current pulse amplitude of 0.7 mA at a rise time of 2.5 mks. The displacement of the solenoid towards the cathode entails an increase in the ion current pulse amplitude up to 1 mA but at the same time it leads to its spreading. The transfer of the solenoid toward the anticathode shortens the front of the ion current pulse, but leads to a decrease in its amplitude to 0.4 mA. At the low magnetic field intensity the current pulse front becomes steeper, but the pulse itself has a more sinusoidal shape with an amplitude of 0.6 mA. An increase in the magnetic field intensity entails an increase in the duration of the pulse front and an increase in its amplitude up to 0.5 mA while retaining a pulse shape close to rectangular.
*Tarakanov V.P. "User's Manual for Code KARAT", BRA Inc., Va, USA, 1992 		 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-RUPAC2018-THPSC42  
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THPSC43
 Generalized Results of Investigation of a Small-Sized Accelerating Ion Diode With Magnetic Insulation of Electrons for Neutron Generation  
 
  • A.A. Isaev, K.I. Kozlovskiy, A.E. Shikanov, E.D. Vovchenko
    MEPhI, Moscow, Russia
  • D.S. Stepanovpresenter
    National Research Nuclear University (MEPhI), Moscow, Russia
  
  Funding: This work was carried out under the Agreement No. 14.575.21.0169 (RFMEFI57517X0169) dated 26.09.2017 with the Ministry of science and education of the Russian Federation.
Investigations of small-sized vacuum laser-plasma diodes have shown the possibility of effective acceleration of deuterons for the nuclear reaction D(d, n)3He in a diode with a laser deuterium-containing target at the anode and magnetic isolation of the electronic current component. Generalized results of investigations of the system of coaxial geometry of electrodes with an internal anode enclosed by a hollow cylindrical cathode are reported at various parameters: the radiation energy of a pulsed yttrium-aluminum garnet laser from 0.1 J to 1 J with a pulse duration of 10 ns and a wavelength of 1.06 mkm, accelerating voltage of a high voltage pulse source according to Arkadiev-Marx scheme from 300 kV to 450 kV. In addition, two methods for suppressing electronic conduction, a constant magnetic field with azimuthal symmetry, and a pulsed magnetic field of a spiral line adjacent to the cathode are considered. It has been experimentally established that the suppression of the electronic conductivity by the field of permanent magnets has a number of significant drawbacks. At a radiation energy of 0.85 J for a laser target, a current of the order of 1 kA with an accelerating voltage of the order of 400 kV was detected in a diode with magnetic insulation. An increase in the laser radiation energy from 0.1 to 0.85 J leads to an increase in the total number of deuterons produced in a laser plasma to about 1015. 		 
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THPSC44
 Experimental Studies of Neutron Generation by the Laser Plasma Acceleration Method in a Nonstationary Magnetic Field  
 
  • A.A. Isaev, K.I. Kozlovskiy, A.E. Shikanov, E.D. Vovchenko
    MEPhI, Moscow, Russia
  • D.S. Stepanovpresenter
    National Research Nuclear University (MEPhI), Moscow, Russia
  
  Funding: This work was carried out under the Agreement No. 14.575.21.0169 (RFMEFI57517X0169) dated 26.09.2017 with the Ministry of science and education of the Russian Federation.
The experimental results of deuteron acceleration based on the expansion of a quasineutral laser plasma in a strong nonstationary magnetic field for the generation of neutrons are discussed, which became a logical continuation of a series of previous works. To obtain a laser plasma, an Nd: YAG laser (wavelength 1.06 nm) was used with the impulse power of 0.85 J and duration of 10 nsec. During its radiation focusing at a dielectric target made of deuterated polyethylene (CD2)n in a vacuum of ~ 10-4 torr, the power density of about 5×1015 W×m-2 was reached. A rapidly growing magnetic field was created when the voltage generator was discharged, based on the pulse charging of the storage capacitance from the high-voltage pulse transformer. When the voltage 100 kV is reached, a breakdown of the spark gap and a discharge of the capacitance onto the induction coil generating a magnetic field (maximum current of the order of 10 kA) occurs. The ion speed was determined as per the time-of-flight method with the registration of ion current at a collector made as a Faraday cylinder, which is installed at a distance of 0.5 m from the laser target. The rapidly increasing magnetic field reached 108 T/s, the maximum ion flow rate was 3×108 cm/s. When a beam of accelerated deuterons was directed to a closely spaced deuterium-containing target, an output of 104 neutrons/pulse was reached. 		 
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THPSC45
 Neutrons Generation Induced by Laser Plasma Deuterons, Accelerated in Field of Pulsed Electron Flow  
 
  • V.I. Rashchikov, A.E. Shikanovpresenter
    MEPhI, Moscow, Russia
  
  Collective acceleration of deuterons from laser plasma by negative potential of electron beam, moving through plasma to vacuum drift tube, is investigated. Electrons produced by short high-voltage electric pulse on cathode, compose a virtual cathode with negative potential well in drift tube, which is used for deuterons acceleration. Electrons accelerated in diode, move through a cloud of deuterium laser plasma, created by plasma-generating target that represents a titanium tablet saturated with deuterium. Experimental results on deuterons acceleration and neutrons generation in D(d, n)3He, 9Be(d, n)10B, 12C(d, n)13N nuclear reactions are presented. Experimental spectrums of accelerated deuterons were obtained. Computer simulation results of deuterons acceleration in field of electrons are in a good agreement with experiment.  
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THPSC47 Characteristics of Laser-Plasma Ion Source Based on a CO2-Laser for Heavy Ion Accelerators at ITEP 498
 
  • A.A. Losev, A. Balabaev, I.D. Hrisanov, T. Kulevoy, Yu.A. Satov, A. Shumshurov, A.A. Vasilyev
    ITEP, Moscow, Russia
  
  The design of laser-plasma heavy ion source is described. This ions source is supposed to operate at I-3 and I-4 accelerators at ITEP. Characteristics of ion component of plasma produced by pulses of the CO2 laser were studied, when irradiating a solid carbon target at power density of 1011-1012 W/cm2. Time-of-flight technique using a high-resolution electrostatic energy analyzer was applied to explore charge state and energy distribution as well as partial currents of carbon and tungsten ions. Some results of investigation of influence of cavern formation on charge state of generated ions are presented. This work is of considerable interest in a wide area of applications of accelerated particle beams, including fundamental studies of state of matter in particle colliders (NICA project at JINR), radiation damage simulation and hadron therapy for cancer treatment. The goal of this work is to investigate characteristics of ions in expanding laser plasma and find optimal conditions of target illumination and ion beam extraction. This research is valuable for adapting an intensive beam from laser ion source to the accelerator, improving acceleration efficency and rising the amount of accelerated particles.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-RUPAC2018-THPSC47  
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THPSC48 Magnetron Proton Source 501
 
  • B.A. Frolov, O.K. Belyaev, E.A. Konoplev, A.M. Korotkov
    IHEP, Moscow Region, Russia
  
  The design and preliminary experimental results for magnetron proton source with cold cathode are presented. To produce nonuniform magnetic field at the emission aperture the permanent circular NdFeB magnets with opposed polarity placed outside the ceramic chamber of source have been used. 110 mA impulse beam current with the energy of 100 keV at 1Hz frequency and 25 mks pulse duration has been received. Normalized emittance equals to 0.8 mm*mrad  
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DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-RUPAC2018-THPSC48  
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THPSC49
 ECR Ion Source DECRIS-PM for DC-280 Cyclotron  
 
  • K.I. Kuzmenkov, V. Bekhterev, S.L. Bogomolov, A.E. Bondarchenko, A.A. Efremov, N. Lebedev, V.N. Loginov, V. Mironov, Yu. Yazvitsky
    JINR, Dubna, Moscow Region, Russia
  
  The paper presents the design of the DECRIS-PM ECR ion source developed for the DC-280 cyclotron which is under construction in FLNR JINR. The results of the tests of the source are presented. During the tests the intense beams of gaseous ions (900 eµA of Ar8+, 550 eµA of Ar9+, 160 eµA of Kr15+ etc.) and ions of solids (450 eµA of Mg5+, 220 eµA of Ca9+, 90 eµA of Ti9+ etc.) were produced. For the time being the source is assembled at the high voltage platform of the cyclotron axial injection system. The main engineering systems of the injector are assembled and tested, commissioning work is in progress.  
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THPSC50 Production of Intense Metal Ion Beams at the DC-60 Cyclotron 504
 
  • K.I. Kuzmenkov, S.L. Bogomolov, A.E. Bondarchenko, V.N. Loginov, V. Mironov
    JINR, Dubna, Moscow Region, Russia
  • V.V. Alexandrenko, I.A. Ivanov, M.V. Koloberdin, S.G. Kozin, A.E. Kurakhmedov, D.A. Mustafin, Y.K. Sambayev, M.V. Zdorovets
    INP NNC RK, Almaty, Kazakhstan
  
  The paper is devoted to the description of research conducted in 2017-2018 at the accelerator complex DC-60 of the Astana branch of INP, on production and acceleration of intense ion beams of solids. The main purpose of this work was to develop techniques for obtaining accelerated ions using the evaporation and volatile compounds (MIVOC) methods for solid materials feed to the ECR source. The development of these techniques will significantly expand the range of accelerated ions, which gives particular relevance to the purpose of the study. The extension of accelerated ions range gives the possibilities of posing, searching for and solving new problems and experiments in the field of experimental nuclear physics, solid-state radiation physics, and various applied problems.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-RUPAC2018-THPSC50  
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THPSC52
 Development of the New Electron Gun for Electron-Beam Welding With Help of WinSAM Program  
 
  • A.V. Ivanov, T.A. Devyataikina, A.A. Starostenko
    BINP SB RAS, Novosibirsk, Russia
  
  New WinSAM program for simulation of electron-optical systems and electron guns was created in BINP. This program is the further development of SAM code. The main advantage of WinSAM program is the new interface that greatly simplifies the usage of the program. The other main targets are enlargement of the scope of solved tasks, introduction different analytical fields, development of enhanced emission model, and speed up calculations. New 120 kV multi-electrode electron gun for electron-beam welding is developed with help of WinSAM program. The required beam current in welding mode is up to 30 mA, in diagnostic mode is 1 mA. Beam radius at welding point should be less than 0.3 mm. Proper electron-optical system of this gun was obtained during numerical simulations. The calculations take into account transversal beam temperature and space charge compensation in region after small aperture anode. Production of this electron gun is started.  
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THPSC53 Test Stand Results of CW 100 mA Electron RF Gun for Novosibirsk ERL FEL 507
 
  • V. Volkov, V.S. Arbuzov, E. Kenzhebulatov, E.I. Kolobanov, A.A. Kondakov, E.V. Kozyrev, I.V. Kuptsov, G.Y. Kurkin, S.V. Motygin, A.A. Murasev, V.K. Ovchar, V.M. Petrov, A.M. Pilan, V.V. Repkov, M.A. Scheglov, I.K. Sedlyarov, S.S. Serednyakov, O.A. Shevchenko, S.V. Tararyshkin, A.G. Tribendis, N.A. Vinokurov
    BINP SB RAS, Novosibirsk, Russia
  • E.V. Kozyrev, S.S. Serednyakov, N.A. Vinokurov
    NSU, Novosibirsk, Russia
  • A.G. Tribendis
    NSTU, Novosibirsk, Russia
  • N.A. Vinokurov
    KAERI, Daejon, Republic of Korea
  • N.A. Vinokurov
    University of Science and Technology of Korea (UST), Daejeon, Republic of Korea
  
  Continuous wave (CW) 100 mA electron rf gun for injecting the high-quality 300-400 keV electron beam in Novosibirsk Energy Recovery Linac (ERL) and driving Free Electron Laser (FEL) was developed, built, and commissioned at BINP SB RAS. The RF gun consists of normal conducting 90 MHz rf cavity with a gridded thermionic cathode unit. Bench tests of rf gun is confirmed good results in strict accordance with our numerical calculations. The gun was tested up to the design specifications at a test bench that includes a diagnostics beam line. The rf gun stand testing showed reliable work, unpretentious for vacuum conditions and stable in long-term operation. The design features of different components of the rf gun are presented. Preparation and commissioning experience is discussed. The latest beam results are reported.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-RUPAC2018-THPSC53  
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THPSC54
 Application of the Research and Technological Complex Based on the Linear Electron Accelerator LUE-8-5RV of the Institute for Nuclear Research for Fundamental Physics Experiments  
 
  • V.N. Ponomarev, G.V. Solodukhov
    RAS/INR, Moscow, Russia
  
  The radiation methods are widely used to solve applied physics problems in the field of solid state physics, the processing of various raw materials, materials and products for medical purposes and so on, with electron accelerators of small, below 10 MeV, energies. In particular, similar activity has been developed at Institute for nuclear research of RAS, Moscow, on the electron accelerator LUE-8-5RV elaborated in St Petersburg, Russia. Recently, the interest in fundamental research of the atomic nucleus physics has been renewed in this energy area. This interest is associated with new research directions, such as nuclear photonics, the study of collective modes of motion in nuclei at low excitation energies (below thresholds of partial reactions), for example, pigmy resonances. However, the problem here is that among the accelerators of this class there are practically no ones which has necessary energy resolution for such studies (of the order or better than 1%). This paper describes the results of the work that made it possible to obtain on the LUE-8-5RV accelerator an electron beam with the following characteristics: pulse rate repetition 300 per sec, pulse duration 3 μs, beam energy in the range of 4-10 MeV, energy resolution from 1% at average beam current up to 6 microamps and 10% at maximum current values (up to 300 microamps).  
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THPSC55
 About a Possibility of Acceleration of Ferromagnetic Objects by the Electromagnetic Fields  
 
  • V.A. Vorontsov
    MEPhI, Moscow, Russia
  
  As the accelerated objects in work the possibility of use of separate domains of a ferromagnetic is considered. Also perhaps an existence of solid-state communication of domains is possible. Acceleration is carried out at the expense of a gradient of the base magnetic field. The magnetic field of ferromagnetics creates a longitudinal potential well in the base magnetic field. The gradient of the base magnetic field does not exceed a gradient of this potential well and does not allow the accelerated objects to go beyond its limits. Depth of a potential well can be increased at the expense of the electron stream which is in this potential well. He does not leave area of a well too, being reflected from its walls. There is some semblance of the moving adgezator used at coherent acceleration of protons by electronic rings. A certain similarity of repetition of the idea of acceleration of protons electronic rings due to acceleration of electronic rings external fields is possible. It can be as magnetic fields with the corresponding gradient of a longitudinal field, and electric fields also. Some kind of combination of coherent acceleration of neutral domains of a ferromagnetic by the magnetic and electric field turns out. Estimates show that at number of atoms about 10 in 14 degrees their acceleration to 1 MEV apart approximately in 1 meter is possible. The sizes of domains are about 10 in minus fifth degree of meter. Longitudinal magnetic fields are in range of 1 Tesla.  
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THPSC56 Code for Simulation of Diffraction Radiation from Flat Finite Surfaces 510
 
  • D.A. Shkitov
    TPU, Tomsk, Russia
  
  Funding: This work was supported by Russian Ministry of Education and Science within the program Nauka, Grant No. 3.1903.2017 and RFBR under the Japan-Russia Research Cooperative Program (18-52-50002 YaFa).
Nowadays diffraction radiation (DR) has several applications in the diagnostics of accelerators such as bunch length, transversal sizes and emittance diagnostics. This radiation occurs when charged particles move close to a target. There are also several DR calculation methods which were developed in the past. However, until now there are no codes for DR simulation from different type of targets. All researches have to develop their own numerical codes or have to use the analytical formulas which are obtained only for the small number of targets with approximations of infinity dimensions and far field zone. In this report we present the code for calculation of DR characteristics from metal targets with finite dimensions and finite distance to detector. The calculation approach in this code is based on the generalized surface current method. Above method is suitable for the targets with the ideal conductivity (metal target case) and applicable for diffraction and transition radiation (TR), for charged particles with arbitrary energies and incidence angles to the target, for wavelengths from optics to mm range. Finally, code can be used to calculate DR and TR characteristics for new beam diagnostics methods and radiation sources development. 		 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-RUPAC2018-THPSC56  
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