ICALEPCS2013 - List of Keywords (electron)

Paper	Title	Other Keywords	Page
MOMIB03	Control Systems Issues and Planning for eRHIC	controls, interface, hardware, feedback	58
	K.A. Brown, P. Chitnis, T. D'Ottavio, J.P. Jamilkowski, J.S. Laster, J. Morris, S. Nemesure, C. Theisen BNL, Upton, Long Island, New York, USA
	Funding: Work supported by Brookhaven Science Associates, LLC under Contract No. DE-AC02-98CH10886 with the U.S. Department of Energy. The next generation of high-energy nuclear physics experiments involve colliding high-energy electrons with ions, as well as colliding polarized electrons with polarized protons and polarized helions (Helium-3 nuclei). The eRHIC project proposes to add an electron accelerator to the RHIC complex, thus allowing all of these types of experiments to be done by combining existing capabilities with high energy and high intensity electrons. In this paper we describe the controls systems requirements for eRHIC, the technical challenges, and our vision of a control system ten years into the future. What we build over the next ten years will be what is used for the ten years following the start of operations. This presents opportunities to take advantage of changes in technologies but also many challenges in building reliable and stable controls and integrating those controls with existing RHIC systems. This also presents an opportunity to leverage on state of the art innovations and build collaborations both with industry and other institutions, allowing us to build the best and most cost effective set of systems that will allow eRHIC to achieve its goals.
	Slides MOMIB03 [0.633 MB]
	Poster MOMIB03 [2.682 MB]

MOPPC020	New Automated Control System at Kurchatov Synchrotron Radiation Source Based on SCADA System Citect	controls, synchrotron, synchrotron-radiation, radiation	97
	Y.A. Fomin, V. Dombrovsky, Y.V. Efimov, E.V. Kaportsev, V. Korchuganov, Y.V. Krylov, K. Moseev, N.I. Moseiko, A.G. Valentinov NRC, Moscow, Russia A. Dorovatovsky, L.A. Moseiko RRC, Moscow, Russia
	The description of new automated control system of Kurchatov synchrotron radiation source which is realized at present time is presented in the paper. The necessity of automated control system modernization is explained by the equipment replacement in which we take state of art hardware decisions for facility control and increase the performances of facility control system. In particular, the number of control channels are increase, the processing and transmitting data speed are considerably increase and the requirements to measurement accuracy are become more strict. The paper presents the detailed description of all control levels (lower, server and upper) of new automated control system and integration of SCADA-system Citect into facility control system which provides the facility control, alarms notify, detailed reports preparation, acquisition and storage of historical data et al.

MOPPC041	Machine Protection System for TRIUMF's ARIEL Facility	controls, TRIUMF, target, operation	175
	D. Dale, D. Bishop, K. Langton, R.B. Nussbaumer, J.E. Richards, G. Waters TRIUMF, Canada's National Laboratory for Particle and Nuclear Physics, Vancouver, Canada
	Phase 1 of the Advanced Rare Isotope & Electron Linac (ARIEL) facility at TRIUMF is scheduled for completion in 2014. It will utilize an electron linear accelerator (eLinac) capable of currents up to 10mA and energy up to 75MeV. The eLinac will provide CW as well as pulsed beams with durations as short as 10uS. A Machine Protection System (MPS) will protect the accelerator and the associated beamline equipment from the nominal 500kW beam. Hazardous situations require the beam to be extinguished at the electron gun within 10uS of detection. Beam loss accounting is an additional requirement of the MPS. The MPS consists of an FPGA based controller module, Beam Loss Monitor VME modules developed by JLAB, and EPICS -based controls to establish and enforce beam operating modes. This paper describes the design, architecture, and implementation of the MPS.
	Poster MOPPC041 [1.345 MB]

MOPPC047	A New PSS for the ELBE Accelerator Facility	laser, radiation, controls, hardware	191
	M. Justus, I. Koesterke, P. Michel HZDR, Dresden, Germany S. Kraft, U. Schramm Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Institute of Radiation Physics, Dresden, Germany S. Lenk SAAS, Bannewitz, Germany
	The ELBE facility (Electron Linear accelerator with high Brightness and low Emittance) is being upgraded towards a Center for High Power Radiation Sources in conjunction with Terawatt & Petawatt femtosecond lasers. The topological facility expansion and an increased number of radiation sources made a replacement of the former personnel safety system (PSS) necessary. The new system based on failsafe PLCs was designed to fulfil the requirements of radiation protection according to effective law, where it combines both laser and radiation safety for the new laser based particle sources. Conceptual design and general specification was done in-house, while detailed design and installation were carried out in close cooperation with an outside firm. The article describes architecture, functions and some technical features of the new ELBE PSS. Special focus is on the implementation of IEC 61508 and the project track. The system was integrated in an existing (and mostly running) facility and is liable to third party approval. Operational experience after one year of run-time is also given.
	Poster MOPPC047 [0.120 MB]

MOPPC049	Radiation and Laser Safety Systems for the FERMI Free Electron Laser	laser, controls, FEL, operation	198
	F. Giacuzzo, L. Battistello, K. Casarin, M. Lonza, G. Scalamera, A. Vascotto, L. Zambon Elettra-Sincrotrone Trieste S.C.p.A., Basovizza, Italy G. Marega Studio di Ingegneria Giorgio Marega, Trieste, Italy
	Funding: Work supported in part by the Italian Ministry of University and Research under grants FIRB-RBAP045JF2 and FIRB-RBAP06AWK3 FERMI@Elettra is a Free Electron Laser (FEL) users facility based on a 1.5 GeV electron linac. The personnel safety systems allow entering the restricted areas of the facility only when safety conditions are fulfilled, and set the machine to a safe condition in case any dangerous situation is detected. Hazards are associated with accelerated electron beams and with an infrared laser used for pump-probe experiments. The safety systems are based on PLCs providing redundant logic in a fail-safe configuration. They make use of a distributed architecture based on fieldbus technology and communicate with the control system via Ethernet interfaces. The paper describes the architecture, the operational modes and the procedures that have been implemented. The experience gained in the recent operation is also reported.
	Poster MOPPC049 [0.447 MB]

MOPPC075	A Monte Carlo Simulation Approach to the Reliability Modeling of the Beam Permit System of Relativistic Heavy Ion Collider (RHIC) at BNL	simulation, distributed, collider, kicker	265
	P. Chitnis, T.G. Robertazzi Stony Brook University, Stony Brook, New York, USA K.A. Brown BNL, Upton, Long Island, New York, USA
	Funding: Work supported by Brookhaven Science Associates, LLC under Contract No. DE-AC02-98CH10886 with the U.S. Department of Energy. The RHIC Beam Permit System (BPS) monitors the health of RHIC subsystems and takes active decisions regarding beam-abort and magnet power dump, upon a subsystem fault. The reliability of BPS directly impacts the RHIC downtime, and hence its availability. This work assesses the probability of BPS failures that could lead to substantial downtime. A fail-safe condition imparts downtime to restart the machine, while a failure to respond to an actual fault can cause potential machine damage and impose significant downtime. This paper illustrates a modular multistate reliability model of the BPS, with modules having exponential lifetime distributions. The model is based on the Competing Risks Theory with Crude Lifetimes, where multiple failure modes compete against each other to cause a final failure, and simultaneously influence each other. It is also dynamic in nature as the number of modules varies based on the fault trigger location. The model is implemented as a Monte Carlo simulation in Java, and analytically validated. The eRHIC BPS will be an extension of RHIC BPS. This analysis will facilitate building a knowledge base rendering intelligent decision support for eRHIC BPS design.
	Poster MOPPC075 [0.985 MB]

MOPPC083	Managing by Objectives a Research Infrastructure	project-management, free-electron-laser, laser, synchrotron	292
	M. Pugliese, F. Billè, D. Favretto, N. Guidi, M. Turcinovich Elettra-Sincrotrone Trieste S.C.p.A., Basovizza, Italy
	Elettra () is a research center operating a research infrastrutcure with two light sources: a synchrotron radiation facility (Elettra) and a free electron laser (FERMI@Elettra). With the mission to promote cultural and socio economical growth of Italy and Europe through basic and applied research, technical and scientific training and technology transfer, few years ago it has adopted a balanced matrix organization. This paper describes the tools, techniques and practices we used to manage this change and the results obtained. We will describe the Virtual Unified Office (VUO) () based on the Project Management Institute (*) standards, that todays allow us to manage by objectives the whole research infrastructure and in particular, the integrated management of initiatives (projects, contracts, operating activities, staff commitments, skills, appointment letters and of the assessment procedures. We will also describe how the VUO integrates the various source of information to manage a set of company indicators and a balanced scorecard which allow us to execute the strategy. () http://www.elettra.eu () http://vuo.elettra.trieste.it (*) http://www.pmi.org
	Poster MOPPC083 [2.853 MB]

MOPPC107	RF-Generators Control Tools for Kurchatov Synchrotron Radiation Source	controls, synchrotron, synchrotron-radiation, radiation	359
	Y.V. Krylov RRC, Moscow, Russia Y.V. Efimov, Y.A. Fomin, E.V. Kaportsev, D. V. Konyakhin, K. Moseev, N.I. Moseiko, A. Vernov NRC, Moscow, Russia
	Now the technology equipment of the Kurchatov Synchrotron Radiation Source (KSRS) is upgraded. At the same time, new equipment and software solutions for the control system are implemented. The KSRS main ring is the electron synchrotron with two 181 MHz RF-generators, their control system provides measurement of parameters of generation, regulation of tuning elements in wave guides and resonators, output of alarm messages. At the execution level the VME standard equipment is used. Server level is supported by Citect SCADA and the SQL historian server. The operator level of control system is implemented, as a PC local network. It allowed to expand number of measuring channels, to increase speed of processing and data transfers, to have on demand historical data with the big frequency of inquiry, and also to improve the accuracy of measurements. In article the control system structure by KSRS RF-generators, including the description of all levels of control is provided. Examples of implementation of the operator interface are given.
	Poster MOPPC107 [1.671 MB]

TUPPC052	Automation of the Wavelength Change for the FERMI Free Electron Laser	FEL, laser, undulator, polarization	683
	C. Scafuri, B. Diviacco Elettra-Sincrotrone Trieste S.C.p.A., Basovizza, Italy
	Funding: Work supported in part by the Italian Ministry of University and Research under grants FIRB-RBAP045JF2 and FIRB-RBAP06AWK3 FERMI is a users facility based on a seeded Free Electron Laser (FEL). A unique feature of FERMI in this new class of light sources is the tunability of the emitted photon beam both in terms of wavelength and polarization. Tuning is obtained by choosing the appropriate gap and phasing of the undulators in the chain and by opportunely setting the seed laser wavelength. A series of adjustments are then necessary in order to keep constant the machine parameters and optimize the radiation characteristics. We have developed a software application, named SuperGap, which does all the calculations and coordinates the operations required to set the desired wavelength and polarization. SuperGap allows operators to perform this procedure in seconds. The speed and accuracy of the wavelength change have been largely exploited during user dedicated shifts to perform various types of scans in the experimental stations. The paper describes the algorithms and numerical techniques used by SuperGap and its architecture based on the Tango control system.
	Poster TUPPC052 [1.116 MB]

TUPPC057	New Development of EPICS-based Data Acquisition System for Electron Cyclotron Emission Diagnostics in KSTAR Tokamak	controls, EPICS, real-time, diagnostics	699
	T.G. Lee, K.D. Lee, S. Lee, W.R. Lee, M.K. Park NFRI, Daejon, Republic of Korea
	Korea Superconducting Tokamak Advanced Research (KSTAR) will be operated in the 6nd campaign in 2013 after achievement of first plasma in 2008. Many diagnostic devices have been installed for measuring the various plasma properties in the KSTAR tokamak during the campaigns. From the first campaign, a data acquisition system of Electron Cyclotron Emission (ECE) Heterodyne Radiometer (HR) has been operated to measure the radial profile of electron temperature. The DAQ system at the beginning was developed with a VME-form factor digitizer in Linux OS platform. However, this configuration had some limitations that it could not acquire over 100,000 samples per second due to its unstable operation during the campaigns. In order to overcome these weak points, a new ECE HR DAQ system is under development with a cPCI-form factor in Linux OS platform and the main control application will be developed based on EPICS framework like other control systems installed in KSTAR. Besides solving the described problems main advantages of the new ECE HR DAQ system are capabilities of calculating plasma electron temperature during plasma shot and displaying it in run-time.
	Poster TUPPC057 [1.286 MB]

TUCOCA03	Machine Protection Issues for eRHIC	kicker, collider, booster, radiation	914
	K.A. Brown, P. Chitnis, C. Theisen, G. Wang BNL, Upton, Long Island, New York, USA
	Funding: Work supported by Brookhaven Science Associates, LLC under Contract No. DE-AC02-98CH10886 with the U.S. Department of Energy. The eRHIC electron beams will be damaging both directly and as a result of synchrotron radiation. The machine protection and abort systems will be designed to prevent any equipment damage from the electron beams. In this paper we will review the requirements for the machine protection systems and the plans we have put into place to better evaluate the failure probabilities, beam abort systems designs, and overall machine protection systems designs. The machine protection systems will include a beam permit system that has inputs from loss monitors, power supplies, superconducting RF monitors, vacuum chamber heating monitors, water temperature, quench detectors, access controls systems, vacuum monitors, and longer term beam lifetime or slow loss monitors. There are three systems associated with the machine protection and beam abort systems; the beam permit link, the abort kicker systems, and the beam dumps. We describe the requirements for these systems and present our current plans for how to meet the requirements.
	Slides TUCOCA03 [2.012 MB]

THMIB07	Fast Orbit Feedback Control in Mode Space	controls, booster, feedback, synchrotron	1082
	S. Gayadeen, S. Duncan University of Oxford, Oxford, United Kingdom M.T. Heron Diamond, Oxfordshire, United Kingdom
	This paper describes the design and implementation of fast orbit feedback control in mode space. Using a Singular Value Decomposition (SVD) of the response matrix, each singular value can be associated with a spatial mode and enhanced feedback performance can be achieved by applying different controller dynamics to each spatial mode. By considering the disturbance spectrum across both dynamic and spatial frequencies, controller dynamics for each mode can be selected. Most orbit feedback systems apply only different gains to each mode however; mode space control gives greater flexibility in control design and can lead to enhanced disturbance suppression. Mode space control was implemented on the Booster synchrotron at Diamond Light Source, operated in stored beam mode. Implementation and performance of the mode space controller are presented.
	Slides THMIB07 [0.582 MB]
	Poster THMIB07 [0.593 MB]

THPPC033	Upgrade of BPM DAQ System for SuperKEKB Injector Linac	linac, emittance, positron, damping	1153
	M. Satoh, K. Furukawa, F. Miyahara, T. Suwada KEK, Ibaraki, Japan T. Kudou, S. Kusano Mitsubishi Electric System & Service Co., Ltd, Tsukuba, Japan
	The non-destructive beam position monitor (BPM) is indispensable diagnostic tool for the stable beam operation. In the KEK Linac, approximately nineteen BPMs with the strip-line type electrodes are used for the beam orbit measurement and feedback. In addition, some of them are also used for the beam energy feedback loops. The current data acquisition (DAQ) system consists of the fast digital oscilloscopes. A signal from each electrode is analyzed with a predetermined response function up to 50 Hz. In the present DAQ system, the measurement precision of beam position is limited to around 0.5 mm because of ADC resolution. Towards SuperKEKB project, we have a plan to upgrade the BPM DAQ system since the Linac should provide the smaller emittance beam in comparison with previous KEKB Linac. We will report the system description of the new DAQ system and the results of performance test in detail.

THPPC051	First Operation of New Electron Beam Orbit Measurement System at SIBERIA-2	controls, radiation, synchrotron, brilliance	1186
	Y.A. Fomin, V. Korchuganov, N.I. Moseiko, S.I. Tomin, A.G. Valentinov NRC, Moscow, Russia R. Hrovatin, P. Leban I-Tech, Solkan, Slovenia
	The paper focuses on the results of commission and usage of the electron beam orbit measurement system at synchrotron radiation source SIBERIA-2 realized at present time at Kurchatov Institute. The main purpose of new orbit measurement system creation is an improvement of the electron beam diagnostic system at the storage ring. This system provides continuous measurements of the electron beam closed orbit during storing, ramping and operation for users. Besides, with the help of the system it is possible to carry out turn-by-turn measurements of the electron beam trajectory during injection process. After installation of new orbit measurement system we obtained a very good instrument to study electron beam dynamics into the main storage ring in detail. The paper describes the new orbit measurement system, its technical performance, the results of commission and our experience.

THPPC095	A Proof-of-Principle Study of a Synchronous Movement of an Undulator Array Using an EtherCAT Fieldbus at European XFEL	undulator, controls, photon, software	1292
	S. Karabekyan, A. Beckmann, J. Pflüger, M. Yakopov XFEL. EU, Hamburg, Germany
	The European XFEL project is a 4th generation X-ray light source. The undulator systems SASE 1, SASE 2 and SASE 3 are used to produce photon beams. Each undulator system consists of an array of undulator cells installed in a row along the electron beam. The motion control of an undulator system is carried out by means of industrial components using an EtherCAT fieldbus. One of its features is motion synchronization for undulator cells which belong to the same system. This paper describes the technical design and software implementation of the undulator system control providing that feature. It presents the results of an on-going proof-of-principle study of synchronous movement of four undulator cells as well as study of movement synchronization between undulator and phase shifter.
	Poster THPPC095 [3.131 MB]

THPPC121	Feedbacks and Automation at the Free Electron Laser in Hamburg (FLASH)	feedback, operation, controls, laser	1345
	R. Kammering, Ch. Schmidt DESY, Hamburg, Germany
	For many years a set of historically grown Matlab scripts and tools have been used to stabilize transversal and longitudinal properties of the electron bunches at the FLASH. Though this Matlab-based approach comes in handy when commissioning or developing tools for certain operational procedures, it turns out to be quite tedious to maintain on the long run as it often lacks stability and performance e.g. in feedback procedures. To overcome these shortcomings of the Matlab-based approach, a server-based C++ solution in the DOOCS* framework has been realized at FLASH. Using the graphical UI designer jddd** a generic version of the longitudinal feedback has been implemented and put very fast into standard operation. The design uses sets of monitors and actuators plus their coupling which easily be adapted operation requirements. The daily routine operation of this server-based FB implementation has proven to offer a robust, well maintainable and flexible solution to the common problem of automation and control for such complex machines as FLASH and will be well suited for the European XFEL purposes. * see e.g. http://doocs.desy.de ** see e.g. http//jddd.desy.de
	Poster THPPC121 [9.473 MB]

THPPC128	The Feedback System for Damping Coherent Betatron and Synchrotron Oscillations of Electron Beam at Dedicated Synchrotron Radiation Source SIBERIA-2.	kicker, feedback, synchrotron, radiation	1359
	A.S. Smygacheva, Y.A. Fomin, V. Korchuganov, N.I. Moseiko, Yu.F. Tarasov, A.G. Valentinov NRC, Moscow, Russia R. Cerne, R. Hrovatin, D.T. Tinta I-Tech, Solkan, Slovenia
	The description of feedback system for dumping coherent betatron and synchrotron oscillations of the electron beam which is realized at present time at the dedicated synchrotron radiation storage ring SIBERIA-2 in Kurchatov Institute is presented in the paper. The installation of new feedback system into the main ring SIBERIA-2 will allow to improve the quality of synchrotron radiation beams. In particular, at the beam injection energy (450 MeV) with the help of new feedback system we can increase maximum stored beam current and at operation beam energy (2.5 GeV) the system will provide additional electron beam spatial stabilization. The paper describes new feedback system description, the principle of operation and its technical characteristics. As well, we describe in detail the design of kickers (especially for longitudinal plane) used into the system as they are one of the important feedback system components.

THPPC129	Evolution of the FERMI Beam Based Feedbacks	feedback, laser, FEL, controls	1362
	G. Gaio, M. Lonza Elettra-Sincrotrone Trieste S.C.p.A., Basovizza, Italy
	Funding: This work was supported in part by the Italian Ministry of University and Research under grants FIRB-RBAP045JF2 and FIRB-RBAP06AWK3 Evolution of the FERMI@Elettra Beam Based Feedbacks FERMI@Elettra is the first seeded Free Electron Laser (FEL) users facility. A number of shot-to-shot feedback loops running synchronously at the machine repetition rate stabilize the electron beam trajectory, energy and bunch length, as well as the trajectory of the laser beams used for the seeding and pump-probe experiments. They are based on a flexible real-time distributed framework integrated into the control system. The interdependence between feedback loops and the need to react coordinately to different operating conditions lead to the development of a real-time supervisor capable of controlling each loop depending on critical machine parameters not directly involved in the feedbacks. The overall system architecture, performance and user interfaces are presented.
	Poster THPPC129 [1.381 MB]

THPPC140	MTCA Upgrade of the Readout Electronics for the Bunch Arrival Time Monitor at FLASH	laser, electronics, feedback, LLRF	1380
	J. Szewiński, G. Boltruczyk, S. Korolczuk NCBJ, Świerk/Otwock, Poland S. Bou Habib, J. Dobosz, D. Sikora Warsaw University of Technology, Institute of Electronic Systems, Warsaw, Poland C. Gerth, H. Schlarb DESY, Hamburg, Germany
	Bunch Arrival time Monitor (BAM) is an electro-optical device used at FLASH accelerator in DESY for the high precision, femtosecond scale, measurements of the moment when electron bunch arrives at the reference point in the machine. The arrival time is proportional to the average bunch energy, and is used to calculate the amplitude correction for RF field control. Correction is sent to the LLRF system in less than 10 us, and this creates a secondary feedback loop (over the regular LLRF one), which is focused on beam energy stabilization - beam feedback. This paper presents new uTCA BAM readout electronics design based on the uTCA.4 – “uTCA for Physics” and FMC mezzanine boards standards. Presented solution is a replacement for existing, VME based BAM readout devices. It provides higher efficiency by using new measurement techniques, better components (such as ADCs, FPGAs etc.), and high bandwidth uTCA backplane. uTCA provides also different topology for data transfers in the crate, which all together opens new opportunities for the improvement of the overall system performance.
	Poster THPPC140 [14.281 MB]

Paper

Title

Other Keywords

Page

MOMIB03

Control Systems Issues and Planning for eRHIC

controls, interface, hardware, feedback

58

K.A. Brown, P. Chitnis, T. D'Ottavio, J.P. Jamilkowski, J.S. Laster, J. Morris, S. Nemesure, C. Theisen
BNL, Upton, Long Island, New York, USA

Funding: Work supported by Brookhaven Science Associates, LLC under Contract No. DE-AC02-98CH10886 with the U.S. Department of Energy.
The next generation of high-energy nuclear physics experiments involve colliding high-energy electrons with ions, as well as colliding polarized electrons with polarized protons and polarized helions (Helium-3 nuclei). The eRHIC project proposes to add an electron accelerator to the RHIC complex, thus allowing all of these types of experiments to be done by combining existing capabilities with high energy and high intensity electrons. In this paper we describe the controls systems requirements for eRHIC, the technical challenges, and our vision of a control system ten years into the future. What we build over the next ten years will be what is used for the ten years following the start of operations. This presents opportunities to take advantage of changes in technologies but also many challenges in building reliable and stable controls and integrating those controls with existing RHIC systems. This also presents an opportunity to leverage on state of the art innovations and build collaborations both with industry and other institutions, allowing us to build the best and most cost effective set of systems that will allow eRHIC to achieve its goals.

Slides MOMIB03 [0.633 MB]

Poster MOMIB03 [2.682 MB]

MOPPC020

New Automated Control System at Kurchatov Synchrotron Radiation Source Based on SCADA System Citect

controls, synchrotron, synchrotron-radiation, radiation

97

Y.A. Fomin, V. Dombrovsky, Y.V. Efimov, E.V. Kaportsev, V. Korchuganov, Y.V. Krylov, K. Moseev, N.I. Moseiko, A.G. Valentinov
NRC, Moscow, Russia
A. Dorovatovsky, L.A. Moseiko
RRC, Moscow, Russia

The description of new automated control system of Kurchatov synchrotron radiation source which is realized at present time is presented in the paper. The necessity of automated control system modernization is explained by the equipment replacement in which we take state of art hardware decisions for facility control and increase the performances of facility control system. In particular, the number of control channels are increase, the processing and transmitting data speed are considerably increase and the requirements to measurement accuracy are become more strict. The paper presents the detailed description of all control levels (lower, server and upper) of new automated control system and integration of SCADA-system Citect into facility control system which provides the facility control, alarms notify, detailed reports preparation, acquisition and storage of historical data et al.

MOPPC041

Machine Protection System for TRIUMF's ARIEL Facility

controls, TRIUMF, target, operation

175

D. Dale, D. Bishop, K. Langton, R.B. Nussbaumer, J.E. Richards, G. Waters
TRIUMF, Canada's National Laboratory for Particle and Nuclear Physics, Vancouver, Canada

Phase 1 of the Advanced Rare Isotope & Electron Linac (ARIEL) facility at TRIUMF is scheduled for completion in 2014. It will utilize an electron linear accelerator (eLinac) capable of currents up to 10mA and energy up to 75MeV. The eLinac will provide CW as well as pulsed beams with durations as short as 10uS. A Machine Protection System (MPS) will protect the accelerator and the associated beamline equipment from the nominal 500kW beam. Hazardous situations require the beam to be extinguished at the electron gun within 10uS of detection. Beam loss accounting is an additional requirement of the MPS. The MPS consists of an FPGA based controller module, Beam Loss Monitor VME modules developed by JLAB, and EPICS -based controls to establish and enforce beam operating modes. This paper describes the design, architecture, and implementation of the MPS.

Poster MOPPC041 [1.345 MB]

MOPPC047

A New PSS for the ELBE Accelerator Facility

laser, radiation, controls, hardware

191

M. Justus, I. Koesterke, P. Michel
HZDR, Dresden, Germany
S. Kraft, U. Schramm
Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Institute of Radiation Physics, Dresden, Germany
S. Lenk
SAAS, Bannewitz, Germany

The ELBE facility (Electron Linear accelerator with high Brightness and low Emittance) is being upgraded towards a Center for High Power Radiation Sources in conjunction with Terawatt & Petawatt femtosecond lasers. The topological facility expansion and an increased number of radiation sources made a replacement of the former personnel safety system (PSS) necessary. The new system based on failsafe PLCs was designed to fulfil the requirements of radiation protection according to effective law, where it combines both laser and radiation safety for the new laser based particle sources. Conceptual design and general specification was done in-house, while detailed design and installation were carried out in close cooperation with an outside firm. The article describes architecture, functions and some technical features of the new ELBE PSS. Special focus is on the implementation of IEC 61508 and the project track. The system was integrated in an existing (and mostly running) facility and is liable to third party approval. Operational experience after one year of run-time is also given.

Poster MOPPC047 [0.120 MB]

MOPPC049

Radiation and Laser Safety Systems for the FERMI Free Electron Laser

laser, controls, FEL, operation

198

F. Giacuzzo, L. Battistello, K. Casarin, M. Lonza, G. Scalamera, A. Vascotto, L. Zambon
Elettra-Sincrotrone Trieste S.C.p.A., Basovizza, Italy
G. Marega
Studio di Ingegneria Giorgio Marega, Trieste, Italy

Funding: Work supported in part by the Italian Ministry of University and Research under grants FIRB-RBAP045JF2 and FIRB-RBAP06AWK3
FERMI@Elettra is a Free Electron Laser (FEL) users facility based on a 1.5 GeV electron linac. The personnel safety systems allow entering the restricted areas of the facility only when safety conditions are fulfilled, and set the machine to a safe condition in case any dangerous situation is detected. Hazards are associated with accelerated electron beams and with an infrared laser used for pump-probe experiments. The safety systems are based on PLCs providing redundant logic in a fail-safe configuration. They make use of a distributed architecture based on fieldbus technology and communicate with the control system via Ethernet interfaces. The paper describes the architecture, the operational modes and the procedures that have been implemented. The experience gained in the recent operation is also reported.

Poster MOPPC049 [0.447 MB]

MOPPC075

A Monte Carlo Simulation Approach to the Reliability Modeling of the Beam Permit System of Relativistic Heavy Ion Collider (RHIC) at BNL

simulation, distributed, collider, kicker

265

P. Chitnis, T.G. Robertazzi
Stony Brook University, Stony Brook, New York, USA
K.A. Brown
BNL, Upton, Long Island, New York, USA

Funding: Work supported by Brookhaven Science Associates, LLC under Contract No. DE-AC02-98CH10886 with the U.S. Department of Energy.
The RHIC Beam Permit System (BPS) monitors the health of RHIC subsystems and takes active decisions regarding beam-abort and magnet power dump, upon a subsystem fault. The reliability of BPS directly impacts the RHIC downtime, and hence its availability. This work assesses the probability of BPS failures that could lead to substantial downtime. A fail-safe condition imparts downtime to restart the machine, while a failure to respond to an actual fault can cause potential machine damage and impose significant downtime. This paper illustrates a modular multistate reliability model of the BPS, with modules having exponential lifetime distributions. The model is based on the Competing Risks Theory with Crude Lifetimes, where multiple failure modes compete against each other to cause a final failure, and simultaneously influence each other. It is also dynamic in nature as the number of modules varies based on the fault trigger location. The model is implemented as a Monte Carlo simulation in Java, and analytically validated. The eRHIC BPS will be an extension of RHIC BPS. This analysis will facilitate building a knowledge base rendering intelligent decision support for eRHIC BPS design.

Poster MOPPC075 [0.985 MB]

MOPPC083

Managing by Objectives a Research Infrastructure

project-management, free-electron-laser, laser, synchrotron

292

M. Pugliese, F. Billè, D. Favretto, N. Guidi, M. Turcinovich
Elettra-Sincrotrone Trieste S.C.p.A., Basovizza, Italy

Elettra (*) is a research center operating a research infrastrutcure with two light sources: a synchrotron radiation facility (Elettra) and a free electron laser (FERMI@Elettra). With the mission to promote cultural and socio economical growth of Italy and Europe through basic and applied research, technical and scientific training and technology transfer, few years ago it has adopted a balanced matrix organization. This paper describes the tools, techniques and practices we used to manage this change and the results obtained. We will describe the Virtual Unified Office (VUO) (**) based on the Project Management Institute (***) standards, that todays allow us to manage by objectives the whole research infrastructure and in particular, the integrated management of initiatives (projects, contracts, operating activities, staff commitments, skills, appointment letters and of the assessment procedures. We will also describe how the VUO integrates the various source of information to manage a set of company indicators and a balanced scorecard which allow us to execute the strategy.
(*) http://www.elettra.eu
(**) http://vuo.elettra.trieste.it
(***) http://www.pmi.org

Poster MOPPC083 [2.853 MB]

MOPPC107

RF-Generators Control Tools for Kurchatov Synchrotron Radiation Source

controls, synchrotron, synchrotron-radiation, radiation

359

Y.V. Krylov
RRC, Moscow, Russia
Y.V. Efimov, Y.A. Fomin, E.V. Kaportsev, D. V. Konyakhin, K. Moseev, N.I. Moseiko, A. Vernov
NRC, Moscow, Russia

Now the technology equipment of the Kurchatov Synchrotron Radiation Source (KSRS) is upgraded. At the same time, new equipment and software solutions for the control system are implemented. The KSRS main ring is the electron synchrotron with two 181 MHz RF-generators, their control system provides measurement of parameters of generation, regulation of tuning elements in wave guides and resonators, output of alarm messages. At the execution level the VME standard equipment is used. Server level is supported by Citect SCADA and the SQL historian server. The operator level of control system is implemented, as a PC local network. It allowed to expand number of measuring channels, to increase speed of processing and data transfers, to have on demand historical data with the big frequency of inquiry, and also to improve the accuracy of measurements. In article the control system structure by KSRS RF-generators, including the description of all levels of control is provided. Examples of implementation of the operator interface are given.

Poster MOPPC107 [1.671 MB]

TUPPC052

Automation of the Wavelength Change for the FERMI Free Electron Laser

FEL, laser, undulator, polarization

683

C. Scafuri, B. Diviacco
Elettra-Sincrotrone Trieste S.C.p.A., Basovizza, Italy

Funding: Work supported in part by the Italian Ministry of University and Research under grants FIRB-RBAP045JF2 and FIRB-RBAP06AWK3
FERMI is a users facility based on a seeded Free Electron Laser (FEL). A unique feature of FERMI in this new class of light sources is the tunability of the emitted photon beam both in terms of wavelength and polarization. Tuning is obtained by choosing the appropriate gap and phasing of the undulators in the chain and by opportunely setting the seed laser wavelength. A series of adjustments are then necessary in order to keep constant the machine parameters and optimize the radiation characteristics. We have developed a software application, named SuperGap, which does all the calculations and coordinates the operations required to set the desired wavelength and polarization. SuperGap allows operators to perform this procedure in seconds. The speed and accuracy of the wavelength change have been largely exploited during user dedicated shifts to perform various types of scans in the experimental stations. The paper describes the algorithms and numerical techniques used by SuperGap and its architecture based on the Tango control system.

Poster TUPPC052 [1.116 MB]

TUPPC057

New Development of EPICS-based Data Acquisition System for Electron Cyclotron Emission Diagnostics in KSTAR Tokamak

controls, EPICS, real-time, diagnostics

699

T.G. Lee, K.D. Lee, S. Lee, W.R. Lee, M.K. Park
NFRI, Daejon, Republic of Korea

Korea Superconducting Tokamak Advanced Research (KSTAR) will be operated in the 6nd campaign in 2013 after achievement of first plasma in 2008. Many diagnostic devices have been installed for measuring the various plasma properties in the KSTAR tokamak during the campaigns. From the first campaign, a data acquisition system of Electron Cyclotron Emission (ECE) Heterodyne Radiometer (HR) has been operated to measure the radial profile of electron temperature. The DAQ system at the beginning was developed with a VME-form factor digitizer in Linux OS platform. However, this configuration had some limitations that it could not acquire over 100,000 samples per second due to its unstable operation during the campaigns. In order to overcome these weak points, a new ECE HR DAQ system is under development with a cPCI-form factor in Linux OS platform and the main control application will be developed based on EPICS framework like other control systems installed in KSTAR. Besides solving the described problems main advantages of the new ECE HR DAQ system are capabilities of calculating plasma electron temperature during plasma shot and displaying it in run-time.

Poster TUPPC057 [1.286 MB]

TUCOCA03

Machine Protection Issues for eRHIC

kicker, collider, booster, radiation

914

K.A. Brown, P. Chitnis, C. Theisen, G. Wang
BNL, Upton, Long Island, New York, USA

Funding: Work supported by Brookhaven Science Associates, LLC under Contract No. DE-AC02-98CH10886 with the U.S. Department of Energy.
The eRHIC electron beams will be damaging both directly and as a result of synchrotron radiation. The machine protection and abort systems will be designed to prevent any equipment damage from the electron beams. In this paper we will review the requirements for the machine protection systems and the plans we have put into place to better evaluate the failure probabilities, beam abort systems designs, and overall machine protection systems designs. The machine protection systems will include a beam permit system that has inputs from loss monitors, power supplies, superconducting RF monitors, vacuum chamber heating monitors, water temperature, quench detectors, access controls systems, vacuum monitors, and longer term beam lifetime or slow loss monitors. There are three systems associated with the machine protection and beam abort systems; the beam permit link, the abort kicker systems, and the beam dumps. We describe the requirements for these systems and present our current plans for how to meet the requirements.

Slides TUCOCA03 [2.012 MB]

THMIB07

Fast Orbit Feedback Control in Mode Space

controls, booster, feedback, synchrotron

1082

S. Gayadeen, S. Duncan
University of Oxford, Oxford, United Kingdom
M.T. Heron
Diamond, Oxfordshire, United Kingdom

This paper describes the design and implementation of fast orbit feedback control in mode space. Using a Singular Value Decomposition (SVD) of the response matrix, each singular value can be associated with a spatial mode and enhanced feedback performance can be achieved by applying different controller dynamics to each spatial mode. By considering the disturbance spectrum across both dynamic and spatial frequencies, controller dynamics for each mode can be selected. Most orbit feedback systems apply only different gains to each mode however; mode space control gives greater flexibility in control design and can lead to enhanced disturbance suppression. Mode space control was implemented on the Booster synchrotron at Diamond Light Source, operated in stored beam mode. Implementation and performance of the mode space controller are presented.

Slides THMIB07 [0.582 MB]

Poster THMIB07 [0.593 MB]

THPPC033

Upgrade of BPM DAQ System for SuperKEKB Injector Linac

linac, emittance, positron, damping

1153

M. Satoh, K. Furukawa, F. Miyahara, T. Suwada
KEK, Ibaraki, Japan
T. Kudou, S. Kusano
Mitsubishi Electric System & Service Co., Ltd, Tsukuba, Japan

The non-destructive beam position monitor (BPM) is indispensable diagnostic tool for the stable beam operation. In the KEK Linac, approximately nineteen BPMs with the strip-line type electrodes are used for the beam orbit measurement and feedback. In addition, some of them are also used for the beam energy feedback loops. The current data acquisition (DAQ) system consists of the fast digital oscilloscopes. A signal from each electrode is analyzed with a predetermined response function up to 50 Hz. In the present DAQ system, the measurement precision of beam position is limited to around 0.5 mm because of ADC resolution. Towards SuperKEKB project, we have a plan to upgrade the BPM DAQ system since the Linac should provide the smaller emittance beam in comparison with previous KEKB Linac. We will report the system description of the new DAQ system and the results of performance test in detail.

THPPC051

First Operation of New Electron Beam Orbit Measurement System at SIBERIA-2

controls, radiation, synchrotron, brilliance

1186

Y.A. Fomin, V. Korchuganov, N.I. Moseiko, S.I. Tomin, A.G. Valentinov
NRC, Moscow, Russia
R. Hrovatin, P. Leban
I-Tech, Solkan, Slovenia

The paper focuses on the results of commission and usage of the electron beam orbit measurement system at synchrotron radiation source SIBERIA-2 realized at present time at Kurchatov Institute. The main purpose of new orbit measurement system creation is an improvement of the electron beam diagnostic system at the storage ring. This system provides continuous measurements of the electron beam closed orbit during storing, ramping and operation for users. Besides, with the help of the system it is possible to carry out turn-by-turn measurements of the electron beam trajectory during injection process. After installation of new orbit measurement system we obtained a very good instrument to study electron beam dynamics into the main storage ring in detail. The paper describes the new orbit measurement system, its technical performance, the results of commission and our experience.

THPPC095

A Proof-of-Principle Study of a Synchronous Movement of an Undulator Array Using an EtherCAT Fieldbus at European XFEL

undulator, controls, photon, software

1292

S. Karabekyan, A. Beckmann, J. Pflüger, M. Yakopov
XFEL. EU, Hamburg, Germany

The European XFEL project is a 4th generation X-ray light source. The undulator systems SASE 1, SASE 2 and SASE 3 are used to produce photon beams. Each undulator system consists of an array of undulator cells installed in a row along the electron beam. The motion control of an undulator system is carried out by means of industrial components using an EtherCAT fieldbus. One of its features is motion synchronization for undulator cells which belong to the same system. This paper describes the technical design and software implementation of the undulator system control providing that feature. It presents the results of an on-going proof-of-principle study of synchronous movement of four undulator cells as well as study of movement synchronization between undulator and phase shifter.

Poster THPPC095 [3.131 MB]

THPPC121

Feedbacks and Automation at the Free Electron Laser in Hamburg (FLASH)

feedback, operation, controls, laser

1345

R. Kammering, Ch. Schmidt
DESY, Hamburg, Germany

For many years a set of historically grown Matlab scripts and tools have been used to stabilize transversal and longitudinal properties of the electron bunches at the FLASH. Though this Matlab-based approach comes in handy when commissioning or developing tools for certain operational procedures, it turns out to be quite tedious to maintain on the long run as it often lacks stability and performance e.g. in feedback procedures. To overcome these shortcomings of the Matlab-based approach, a server-based C++ solution in the DOOCS* framework has been realized at FLASH. Using the graphical UI designer jddd** a generic version of the longitudinal feedback has been implemented and put very fast into standard operation. The design uses sets of monitors and actuators plus their coupling which easily be adapted operation requirements. The daily routine operation of this server-based FB implementation has proven to offer a robust, well maintainable and flexible solution to the common problem of automation and control for such complex machines as FLASH and will be well suited for the European XFEL purposes.
* see e.g. http://doocs.desy.de
** see e.g. http//jddd.desy.de

Poster THPPC121 [9.473 MB]

THPPC128

The Feedback System for Damping Coherent Betatron and Synchrotron Oscillations of Electron Beam at Dedicated Synchrotron Radiation Source SIBERIA-2.

kicker, feedback, synchrotron, radiation

1359

A.S. Smygacheva, Y.A. Fomin, V. Korchuganov, N.I. Moseiko, Yu.F. Tarasov, A.G. Valentinov
NRC, Moscow, Russia
R. Cerne, R. Hrovatin, D.T. Tinta
I-Tech, Solkan, Slovenia

The description of feedback system for dumping coherent betatron and synchrotron oscillations of the electron beam which is realized at present time at the dedicated synchrotron radiation storage ring SIBERIA-2 in Kurchatov Institute is presented in the paper. The installation of new feedback system into the main ring SIBERIA-2 will allow to improve the quality of synchrotron radiation beams. In particular, at the beam injection energy (450 MeV) with the help of new feedback system we can increase maximum stored beam current and at operation beam energy (2.5 GeV) the system will provide additional electron beam spatial stabilization. The paper describes new feedback system description, the principle of operation and its technical characteristics. As well, we describe in detail the design of kickers (especially for longitudinal plane) used into the system as they are one of the important feedback system components.

THPPC129

Evolution of the FERMI Beam Based Feedbacks

feedback, laser, FEL, controls

1362

G. Gaio, M. Lonza
Elettra-Sincrotrone Trieste S.C.p.A., Basovizza, Italy

Funding: This work was supported in part by the Italian Ministry of University and Research under grants FIRB-RBAP045JF2 and FIRB-RBAP06AWK3
Evolution of the FERMI@Elettra Beam Based Feedbacks FERMI@Elettra is the first seeded Free Electron Laser (FEL) users facility. A number of shot-to-shot feedback loops running synchronously at the machine repetition rate stabilize the electron beam trajectory, energy and bunch length, as well as the trajectory of the laser beams used for the seeding and pump-probe experiments. They are based on a flexible real-time distributed framework integrated into the control system. The interdependence between feedback loops and the need to react coordinately to different operating conditions lead to the development of a real-time supervisor capable of controlling each loop depending on critical machine parameters not directly involved in the feedbacks. The overall system architecture, performance and user interfaces are presented.

Poster THPPC129 [1.381 MB]

THPPC140

MTCA Upgrade of the Readout Electronics for the Bunch Arrival Time Monitor at FLASH

laser, electronics, feedback, LLRF

1380

J. Szewiński, G. Boltruczyk, S. Korolczuk
NCBJ, Świerk/Otwock, Poland
S. Bou Habib, J. Dobosz, D. Sikora
Warsaw University of Technology, Institute of Electronic Systems, Warsaw, Poland
C. Gerth, H. Schlarb
DESY, Hamburg, Germany

Bunch Arrival time Monitor (BAM) is an electro-optical device used at FLASH accelerator in DESY for the high precision, femtosecond scale, measurements of the moment when electron bunch arrives at the reference point in the machine. The arrival time is proportional to the average bunch energy, and is used to calculate the amplitude correction for RF field control. Correction is sent to the LLRF system in less than 10 us, and this creates a secondary feedback loop (over the regular LLRF one), which is focused on beam energy stabilization - beam feedback. This paper presents new uTCA BAM readout electronics design based on the uTCA.4 – “uTCA for Physics” and FMC mezzanine boards standards. Presented solution is a replacement for existing, VME based BAM readout devices. It provides higher efficiency by using new measurement techniques, better components (such as ADCs, FPGAs etc.), and high bandwidth uTCA backplane. uTCA provides also different topology for data transfers in the crate, which all together opens new opportunities for the improvement of the overall system performance.

Poster THPPC140 [14.281 MB]