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THPSC21 |
Observation of Characteristic X-ray Radiation Induced by 450 MeV/nucleon C+6 Ions and 1 GeV Protons Impact in Solid Targets at Extracted and Circulated Beams of Accelerator U70 |
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- R.M. Nazhmudinov, A.S. Kubankin, A.V. Shchagin
BelSU, Belgorod, Russia
- A.G. Afonin, G.I. Britvich, Y.A. Chesnokov, A.A. Durum, M.Yu. Kostin, V.A. Maisheev, D.A. Savin, A.A. Yanovich
IHEP, Moscow Region, Russia
- A.S. Gogolev, S.R. Uglov
TPU, Tomsk, Russia
- A.V. Shchagin, N.F. Shul'ga
NSC/KIPT, Kharkov, Ukraine
- N.F. Shul'ga
KhNU, Kharkov, Ukraine
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Funding: Partial support by the MES of Russian Federation under project 3.2009.2014/K.
Results of experimental research on observation of characteristic X-ray radiation excited in solid thin targets by the extracted beam of C+6 ions* and circulated beam of 1 GeV protons are presented. It was found that the background radiation of secondary particles** is not as an obstacle for observation of characteristic X-ray radiation spectral peaks at energies from a few to tens of keVs. Spectra of X-ray radiation from Ti and W targets are presented. It is shown that characteristic X-ray radiation can be used for monitoring of the number of particles passed through a non-crystalline target. The applicability of the characteristic X-ray radiation for the monitoring of the number of incident particles in experiments on steering of proton and ion beams by crystalline deflectors as well as for study of parametric X-ray radiation from crystalline deflectors is discussed.
* S. Ivanov et al., Proceedings of RUPAC 2012, Saint-Petersburg, Russia p. 120–122.
** A.G. Afonin et al., Problems of Atomic Science and Technology, №4 (86) (2013) 315-319.
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THPSC22 |
Electron Beam Deflection by Pyroelectric Crystals |
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- R.M. Nazhmudinov, A.S. Kubankin, A.N. Oleinik, A.V. Shchagin, K.A. Vokhmyanina
BelSU, Belgorod, Russia
- A.V. Shchagin
NSC/KIPT, Kharkov, Ukraine
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Funding: Authors acknowledge the partial support by the MES of Russian Federation under project 3.2009.2014/K.
Turning of non-relativistic electron beam moving in the transverse electric field created by the pair of pyroelectric crystals is shown experimentally for the first time. The transverse electric field arises between the crystals at their heating and cooling. The angle of the electron beam deflection is measured and the value of the transverse electric field is estimated. Prospects for application of pyroelectric crystals for steering of particle beams are discussed.
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| THPSC23 |
Upgrade of BPM System at VEPP-4M Collider |
368 |
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- E.A. Bekhtenev
NSU, Novosibirsk, Russia
- E.A. Bekhtenev, G.V. Karpov
BINP SB RAS, Novosibirsk, Russia
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Funding: Ministry of Education and Science of the Russian Federation
Developed in BINP wideband beam position monitor (BPM) electronics has been installed at the VEPP-4M electron-positron collider. The VEPP-4M operates with two electron and two positron bunches. Wide bandwidth of new electronics (200 MHz) allows the separate measurements of electron and positron bunches with time interval between bunches up to 18 ns. 18 BPMs located near four meeting points are supplied with new electronics. The electronics can measure the position of each of four bunches. BPM system works at two modes: slow closed orbit measurements and turn-by-turn measurements. We present details of system design and operation.
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THPSC24 |
Fast Digital Phasemeter for Booster of NICA Project |
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- A.S. Styuf, G.V. Karpov
BINP SB RAS, Novosibirsk, Russia
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Measurement of phase difference of two signals is widely-spread task in various regions of science and engineering. For example, in heavy ions accelerators phase difference between high frequency accelerating voltage and first harmonics of beam signal has to be measured. In this case phase measurement is complicated due to fast changing of signals frequency and amplitude. This task can be easy solved if both signals are converted in digital form and processed in FPGA. Fast phase difference meter for frequency range 0.2-6 MHz is described in this paper. The device provides phase difference measurements with measurement time ~17 microseconds and error less than 1 Degree. Signals frequency can be changed with speed up to 20 MHz/sec, signal amplitude can be changed with speed up to 40 dB/sec. A key procedure of phase meter operation is forming of two orthogonal signals on base of reference signal. During quadrature detecting the signal integration for the time equaled the integer number of signal periods is performed. It allows effectively suppress high signal harmonics. Analog electronics contains programmable gain amplifier with gain range 22-50 dB and can work in wide range of signal amplitude. Phase meter electronics features and signal processing methods are represented in this paper. Phase meter parameters and results obtained in ion accelerator are also given.
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| THPSC25 |
Extending VEPP-5 Control System by Middleware for Injection/extraction Automation |
371 |
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- F.E. Emanov, D. Bolkhovityanov, A.R. Frolov, Ye.A. Gusev
BINP SB RAS, Novosibirsk, Russia
- F.E. Emanov
NSU, Novosibirsk, Russia
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CX and EPICS are used at VEPP-5 Injection complex. Each system is in charge of some part of accelerator devices. Middleware layer was added in order to make data processing and facility-level control actions more straightforward. Middleware is separated from clients layer by means of additional CX-server. Architectural approach is discussed by the example of complex injection/extraction automation.
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| THPSC26 |
Distributed Beam Loss Monitor Based on the Cherenkov Effect in Optical Fiber |
374 |
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- Yu. Maltseva, F.E. Emanov, A.V. Petrenko, V.G. Prisekin
BINP SB RAS, Novosibirsk, Russia
- F.E. Emanov
NSU, Novosibirsk, Russia
- A.V. Petrenko
CERN, Geneva, Switzerland
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A distributed beam loss monitor based on the Cherenkov effect in optical fiber has been implemented for the VEPP-5 electron and positron linacs and the 510 MeV damping ring at the Budker INP. The monitor operation is based on detection of the Cherenkov radiation generated in optical fiber by means of relativistic particles created in electromagnetic shower after highly relativistic beam particles (electrons or positrons) hit the vacuum pipe. The main advantage of the distributed monitor compared to local ones is that a long optical fiber section can be used instead of a large number of local beam loss monitors. In our experiments the Cherenkov light was detected by photomultiplier tube (PMT). Timing of PMT signal gives the location of the beam loss. In the experiment with 20 m long optical fiber we achieved 3 m spatial resolution. To improve spatial resolution optimization and selection process of optical fiber and PMT are needed and according to our theoretical estimations 0.5 m spatial resolution can be achieved. We also suggest similar techniques for detection of electron (or positron) losses due to Touschek effect in storage rings.
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| THPSC27 |
Modernization of VEPP-2000 Control System |
377 |
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- Yu. A. Rogovsky
NSU, Novosibirsk, Russia
- D.E. Berkaev, O.V. Gorbatenko, A.P. Lysenko, Yu. A. Rogovsky, A.L. Romanov, A.I. Senchenko, P.Yu. Shatunov, Y.M. Shatunov
BINP SB RAS, Novosibirsk, Russia
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Electron-positron collider VEPP-2000 delivered data for the high energy physics since the end of 2009. In the summer of 2013 the long shutdown was started dedicated to the deep upgrade of the wide range of subsystems. The main goal of the improvements is to reach or exceed design luminosity in the whole energy range from 200 MeV to 1000 MeV per bunch. The hardware of the accelerator complex consists of high current main field power supplies, low current power supplies for steering and multipole magnets, pulsed power supplies for channel's elements, RF subsystems, BPM and some other special subsystems (such as vacuum, temperature, etc.). The control system is based on CANbas, CAMAC and VME devices. The wide range of software corresponding to specific hardware subsystems forms complicated interacting system that manages all parts of the VEPP-2000 accelerator facility. Automation software is running on several TCP/IP connected PC platforms under operating system Linux and uses client-server techniques. The paper presents general overview and changes made in architecture, implementation and functionality of hardware and software of the VEPP-2000 collider control system.
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Poster THPSC27 [7.957 MB]
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| THPSC28 |
Development of Automation System of the Ion Source |
380 |
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- A.M. Koshkarev, Y.I. Belchenko, A.N. Kvashnin, A.L. Sanin, P.V. Zubarev
BINP SB RAS, Novosibirsk, Russia
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To operate a source of negative hydrogen ions an automatic distributed control system was developed. This system consists of master controller (Slab C8051F120) and a set of peripheral local controllers (PLC) based on microcontroller Slab C8051F350. Using an optical link between PLC and master controller there was created a system resistant to high-voltage breakdowns of the ion source. To control the system, a special programming language has been created. It includes procedures for checking the necessary parameters, setting the value of the physical quantities to simplify the experiment, verifying the lock status and protection. This system provides two programmable timers, as well as procedures in emergency situations, such as: lack of water, poor vacuum. It can be operated in semi-automatic mode: the script asks operator about preferable actions and then it continues actions depending on the response. All scripts are performed by master controller, and this makes system very rapid (for example system response time is 1 ms).
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| THPSC29 |
Controller for RF Stations for Booster of NICA Project |
383 |
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- G.A. Fatkin, A.M. Batrakov, I.V. Ilyin, G.Y. Kurkin, A.M. Pilan, M.Yu. Vasilyev
BINP SB RAS, Novosibirsk, Russia
- G.A. Fatkin
NSU, Novosibirsk, Russia
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Intellectual Controller for RF stations based on CPU module SAMA5D31-CM for Booster of NICA Project is presented. Controller measures magnetic field using induction coil and provides corresponding real-time tuning of frequency according to non-linear law with 20 ums period and better than 2*10-4 accuracy. Controller also allows setting up and monitoring several parameters of RF stations. The tester module that generates a sequence of events and signals imitating acceleration cycle is alo presented.
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Poster THPSC29 [2.170 MB]
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THPSC30 |
Development of an Integrated Tomography Experiment Control Environment |
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- I.A. Khokhriakov, F. Beckmann
HZG, Geesthacht, Germany
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Funding: The project's funding reference is FKZ05E11CG1
The Helmholtz-Zentrum Geesthacht is operating beamlines optimized for materials research using synchrotron radiation at the Deutsches Elektronen-Synchrotron DESY in Hamburg and beamlines using neutrons at the FRM II in Munich. With the beginning of the operation of the 3rd generation synchrotron-radiation source PETRA III, Hamburg, and the design and planning of the new neutron source ESS, Lund, there is a strong demand to increase the data throughput, to make optimal use of the beamtime, together with a full controlled experiment. Especially in tomography the data pipeline from the experiment to the 3D reconstruction has to be redesigned. Furthermore, the extensive progress in hardware in recent years makes it now possible to develop nearly real time tomography experiment control system. Such system can perform all the routines that are necessary for the experiment and provide real time feedback to the user. This feedback can be used for instant monitoring and/or for real time reconstruction. The most important task for such system is the collection of the data. The data can be divided into three main groups: 1) static data; 2) data collected during the experiment; 3) persistent data. Finally all data is stored in the NeXus format. This data can be interpreted on the fly, for instance to generate a feedback or to perform a reconstruction. This system is now in an approbation stage at IBL (P05) and HEMS (P07) beamlines, PETRA III, DESY, Hamburg, Germany.
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| THPSC31 |
Media Server for Video and Audio Exchange between the U-70 Accelerator Complex Control Rooms |
386 |
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- I. Lobov, V. Gotman
IHEP, Moscow Region, Russia
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The media server was developed that implements the exchange of video and audio streams between control rooms for U-70 technological subsystems. Media server has the possibility of making changes into the intermediate video images to embed current technological information. The media server is implemented as a set of threads of execution, one for each video format conversion module. The media server is a chain of successive transformations of video and audio streams from one format to another: H264 - Y4M - Theora formats for video, PCM - Vorbis formats for audio. The final video and audio streams are encapsulated into the OGG container stream which is translating into the local network. OGG container has been chosen because of its completely open, patent-free technology and full support in HTML5. Any Web browser with full HTML5 support may be used as OGG stream consumer. The browser client program has written with tag "video" utilization. This allows for client to work on different platforms (Linux, Windows) and get rid of third-party video plug-ins.
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| THPSC32 |
U-70 Accelerator Complex: Centralized Access to IP-Devices with Embedded Web-Server |
389 |
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- Yu.V. Milichenko, E.V. Takaeva, V.P. Voevodin
IHEP, Moscow Region, Russia
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The paper describes our efforts to organize centralized access to IP-devices of specific types. Each device includes proper embedded web-server and is connected to an accelerator department network. Today there are tens of the devices are used to give pictures online. A device access is carried out by user understandable device names with the aid of accelerator department web-server. Some arisen problems are pointed. Possible manifold forms of on screen presentation of pictures derived from devices are presented.
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| THPSC33 |
Digital Signal Processing Algorithms for Linac Low-Level RF Systems |
392 |
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- D.A. Liakin, S.V. Barabin, A.Y. Orlov
ITEP, Moscow, Russia
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A set of LLRF systems had been designed for various applications of resonant RF devices such as accelerators or beam deflectors. This report presents compact signal detection algorithms, used in most of developed systems. Application-specific extension of the signal processing procedure allows the system be synchronized to external self-excited oscillator.
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Poster THPSC33 [13.540 MB]
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| THPSC34 |
A Digital Low-Level RF System for Resonant Beam Deflector of LAPLAS Experiment |
395 |
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- D.A. Liakin, S.V. Barabin, A.Y. Orlov
ITEP, Moscow, Russia
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A two-resonator heavy ion deflecting system is a part of LAPLAS experiment. ITEP built and put into operation a lightweight prototype of a deflector. Developed high performance radio-frequency control unit provides all necessary options for successful operation in LAPLAS or ITEP installations. The LLRF includes a two-channel reference generator based on a digital signal processing core and resonant frequency control modules, also powered by an appropriate DSP.
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Poster THPSC34 [8.708 MB]
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| THPSC35 |
Quench Detector for Superconducting Elements of the NICA Accelerator Complex |
398 |
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- E.V. Ivanov
JINR, Dubna, Moscow Region, Russia
- A.O. Sidorin, Z.I. Smirnova, L.A. Svetov
JINR/VBLHEP, Dubna, Moscow region, Russia
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The system provides highly effective detection of quenches in superconducting elements of Nuclotron and NICA facility. Full information about quench element is transmitted to control room. Diagram of analogue quench signal could be displayed on screen for further analysis. The system performs scheduled self-test diagnostics in real time and controls power elements of energy evacuation.
E. Ivanov
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| THPSC36 |
Experimental Study of the Scattering of 7.4 Mev Electrons Intersecting a Foil at an angle of 5–60 degree to its Surface |
401 |
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- A.V. Serov, A.V. Koltsov
LPI, Moscow, Russia
- I.A. Mamonov
NRNU, Moscow, Russia
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Angular distributions of electrons incident of a planar target at a small angle to its surface have been measured. Electrons have been injected from a microtron with a particle energy of 7.4 MeV. The dependence of the characteristics of beams on the initial energy and direction of injection of particles, as well as on the material and thickness of the target, has been considered. The intersection and reflection of electrons in the target have been investigated. The angle between the trajectory of the particles and the surface of the target was varied in the range of 5-60 degree. Aluminum, lead, and copper foils have been tested. The thickness of the foils was varied from 50 mkm to 600 mkm.
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| THPSC37 |
A Pulse Generator of X-Ray Quants for Remote Radiation Monitoring |
404 |
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- A.V. Il'inskiy, B.Y. Bogdanovich, D.R. Khasaya, A. Nesterovich, A.E. Shikanov
MEPhI, Moscow, Russia
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For effective implementation of modern methods of X-raying required equipment complexes with increased requirements to the generator X-rays compared to conventional devices used in radiography. These requirements basically boil down to the fact that the radiation source along with small dimensions should provide at least 0.5 m from the target minimum exposure dose of about 10 mR for 1 with the appliance with a minimum area of the radiating surface of the target. These parameters are obtained by using X-rays generator based on high-current diode accelerating tube (AT) operating in the pulse-periodic regime at current amplitude of the accelerated electrons in the tube Im ~ 1 kA, pulse duration 1-10 ns and a maximum energy of electrons reaching several hundred keV The report presents the development of compact AT, which improved definition x-ray image is ensured by using a diode system with a coaxial geometry acceleration of electrons to the anode electrode internal target and explosive emission cathode. AT used to run a specially designed high-voltage pulse transformer-based "Tesla" with surge sharpener. Describes the design and block diagram interface generator X-ray quanta. Feature is the high stability of the generator is not dependent on the voltage, battery charge. Presented the results of experimental testing of the generator X-ray quanta. Also shows the waveform duration x-ray pulses in the presence of the lead filter and without it.
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| THPSC38 |
Development of the Software for the Accelerating Fields in Linear Structures Measurement |
407 |
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- E.A. Savin, M.V. Lalayan, A.Yu. Smirnov
MEPhI, Moscow, Russia
- A.A. Zavadtsev
Nano, Moscow, Russia
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The software which allows controlling the whole installation to measure electric fields in the linear structures has been developed. The installation consists of linear structure, step motor drive, motor controller, a probe which moves on the string throw the structure to perturb the field to use the perturbation measuring method, network vector analyzer and the PC. He software interface is user-friendly, user only needs to write down the length of the structure, a desired step of the probe and push the start button. As a result user can obtain the picture of electric field on the structure axis. It is possible to choose between two measuring methods: by S11 of by S21.
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| THPSC39 |
Control Systems for Radiography and Cargo Inspection RF Accelerators |
410 |
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- A.N. Ermakov
MSU, Moscow, Russia
- A.N. Kamanin, V.G. Sayapin, V.I. Shvedunov, D.S. Yurov
M.V. Lomonosov Moscow State University (MSU), Skobeltsyn Institute of Nuclear Physics, Moscow, Russia
- I.V. Shvedunov
Federal State Unitary Enterprise, Laboratory of Electron Accelerators MSU, Ltd, Moscow, Russia
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Based on "open technologies" approach to design of control systems for radiography and cargo inspection electron RF accelerators constructed at Laboratory of Electron Accelerators MSU is described. The control system consists of a number of specialized controllers each responsible for separate accelerator subsystem connected via Ethernet interface and Modbus/TCP protocol with control computer which in turn is connected with control panel computer, modulator, power supplies etc. each having its own digital interface. Each controller contains one or several special boards conditioning external analogue and discrete signals and universal microcontroller part providing controller operation and network connection. Both control computer and control panel computer are based on BlueShark SOM (System on a Module) amd run Linux operating system. Custom SCADA-like system has been developed to provide proper accelerator operation and operator interface with support for different levels of access to accelerator parameters.
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| THPSC40 |
Automated Control System of Target System for PET radionuclids Production |
413 |
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- R.M. Klopenkov, P.A. Gnutov, M.L. Klopenkov, A.N. Kuzhlev, A.A. Melnikov
NIIEFA, St. Petersburg, Russia
- B.V. Zabrodin
St. Petersburg State Polytechnic University, St. Petersburg, Russia
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An Automated Control System of target system for production of PET-radionuclids has been designed. The system allows on-line obtaining of the data on the status of the target system and remote control of loading, irradiation and evacuation of the activity to synthesis modules. According to algorithms available in the software, this system makes possible emergency situations to be prevented and incorrect actions of the operator to be blocked.
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| THPSC41 |
System for Remote Replacement of Targets of the Target System for CC-Cyclotrons |
415 |
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- R.M. Klopenkov, P.A. Gnutov, M.L. Klopenkov, A.N. Kuzhlev, A.A. Melnikov
NIIEFA, St. Petersburg, Russia
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An automated system for remote replacement of target devices of the target system for cyclotrons of the CC-series has been designed. The system allows one of 5 available targets to be positioned under the beam of the cyclotron at the operator choice. Such a technical solution allows us to have sufficiently smaller overall dimensions of the equipment and less time is required for servicing of water and gas targets. Separate system for target replacement is provided for each beam extraction, which allows the cyclotron to be equipped with 10 different target devices, and makes possible simultaneous irradiation of 2 targets.
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| THPSC42 |
Modernization of the Automated Control System of Kurchatov Synchrotron Radiation Source Using Citect SCADA |
417 |
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- E.V. Kaportsev, V. Dombrovsky, Y.V. Efimov, V. Korchuganov, Y.V. Krylov, K. Moseev, N.I. Moseiko, A.G. Valentinov
NRC, Moscow, Russia
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The running cycle of Kurchatov Synchrotron Radiation Source (KSRS) includes the injection of electrons with energy 80 MeV from the linear accelerator in the booster storage ring Siberia-1, the accumulation of a electron current up to 400 mA and, then, electron energy ramping up to 450 MeV with the subsequent extraction of electrons in the main ring, storage ring Siberia-2, and accumulation there up to 300 mA, and at last the energy ramping up to 2.5 GeV. A few years ago we started modernization of the automated control systems (ACS) of accelerator - storage complex. Modernization has affected the most important parts of the system - the system of data collection and control system. Used advanced solutions based on CAN and VME and modular complexes National Instruments. Currently begins implementation of the Citect SCADA system. In this paper the stages of implementation of the SCADA control system. Showing part of the system, which is already widely used, as well as parts of the system, which is scheduled to launch in the near future.
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| THPSC43 |
Electrostatic Pick-ups for Debunched Beams at INR Linac |
420 |
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- S.A. Gavrilov, P.I. Reinhardt-Nickoulin, I.V. Vasilyev
RAS/INR, Moscow, Russia
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Pick-ups are one of the most widespread non-destructive diagnostics at charged particle accelerators. These detectors, also known as beam position monitors, are generally used for the center-of-mass position measurements of bunched beams. The paper describes the research results for infrequent case of debunched beams operation. Measurement peculiarities and distinctive features of electronics are presented. The results of test bench-based measurements and 3D finite element simulations are discussed.
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Poster THPSC43 [2.287 MB]
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| THPSC44 |
Development of Remote Control System for H-minus Ions Source of INR LINAC |
423 |
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- V.S. Klenov, Yu.V. Kiselev, O. Volodkevich, V. Zubets
RAS/INR, Moscow, Russia
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A system of remote control of surface plasma source of negative ions for INR RAS LINAC was designed, constructed and put into operation. The INR LINAC negative ions injector is based on the accelerating tube at energy of 400 keV and surface plasma source of negative ions. Galvanic isolation and spatial separation of elements that are at potential 400 kV in the power rack of the ion source and the host computer are carried out by means of fiber-optic USB-interface extender from firms Icron. A set of multifunctional units from National Instruments allows to monitor the oscilloscope signals with up to 50 Ms/s and to control the ions source power settings. The data acquisition devices programming performed in a LabView graphical environment. Algorithm and LabVew code for fast and safe "conditioning" of the ion source discharge gap and extractor gap from arcing and breakdowns were developed.
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| THPSC45 |
Use of Fast Magnetic Beam Raster System for INR Isotope Production Facility |
426 |
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- O. Volodkevich, S. Bragin, A. Feschenko, O.V. Grekhov, Yu.V. Kiselev, V.M. Kokhanyuk, V.N. Mikhailov, A.N. Mirzojan, V.L. Serov
RAS/INR, Moscow, Russia
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Fast magnetic beam raster system for INR isotope production facility is developed and implemented. The system enables to increase the isotope production efficiency by providing a possibility of using a higher intensity proton beam on the target of the isotope production facility. First experimental results of system application for irradiation of the targets are presented.
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