IPAC2014 - List of Keywords (EPICS)

Paper	Title	Other Keywords	Page
MOPME055	Design and Construction of a Remote Control for the CADS Digital Power Supplies	controls, FPGA, power-supply, hardware	498
	Y.Y. Du, J.S. Cao, Q. Ye IHEP, Beijing, People's Republic of China
	A remote controlled power supply system includes a data processing system and control at least 76 power supplies, which is designed for the China Accelerator Driven Subcritical system (C-ADS) power supplies system. The system Construction in the mode of integrated control with 1U chassis board, and the hardware parts control core based on Field Programmable Gate Array (FPGA). The software part adopts Experimental Physics and Industrial Control System (EPICS) platform with database and TCP/IP protocol, the administrators can acquire the working parameter through a remote control equipment and control the power supply at the remote site.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-MOPME055
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TUPRO019	Localisation of Beam Offset Jitter Sources at ATF2	quadrupole, experiment, simulation, damping	1049
	J. Pfingstner, H. Garcia, A. Latina, M. Patecki, D. Schulte, R. Tomás CERN, Geneva, Switzerland
	For the commissioning and operation of modern particle accelerators, automated error detection and diagnostics methods are becoming increasingly important. In this paper, we present two such methods, which are capable of localising sources of beam offset jitter with a combination of correlation studies and so called degree of freedom plots. The methods were applied to the ATF2 beam line at KEK, where one of the major goals is the reduction of the beam offset jitter. Results of this localisation are shown in this paper. A big advantage of the presented method is its high robustness especially to varying optics parameters. Therefore, we believe that the developed beam offset jitter localisation methods can be easily applied to other accelerators.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-TUPRO019
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THPRO109	Design and Status of the SuperKEKB Accelerator Control Network System	network, controls, linac, Ethernet	3150
	M. Iwasaki, K. Furukawa, T.T. Nakamura, T. Obina, S. Sasaki, M. Satoh KEK, Ibaraki, Japan T. Aoyama, T. Nakamura Mitsubishi Electric System & Service Co., Ltd, Tsukuba, Japan
	We have upgraded the accelerator control network system for SuperKEKB, the upgrade of the KEKB asymmetric energy e⁺e⁻ collider for the next generation B-factory experiment in Japan. For SuperKEKB, the accelerator control network system with the higher performance of the wider bandwidth data transfer, and more reliable and redundant configuration, is required, to ensure the robust operations under the 40 times higher luminosity. We install the 10 gigabit Ethernet (10GbE) network switches for the wider network bandwidth and optical cables to construct the redundant network. We reconfigure the network design to connect the accelerator control network and the KEK laboratory network to enhance the security. For the beamline construction and the accelerator components maintenance, we install the new wireless network system consists with the Leaky Coaxial (LCX) cable antennas and collinear antennas, which have good radiation hardness of >1MGy, into the 3 km circumference accelerator tunnel. In this paper, we describe the design and current status of the SuperKEKB accelerator control network system.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-THPRO109
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THPRO110	High Availability Software Architecture of C-ADS Control System	controls, database, software, software-architecture	3153
	P.F. Wang, J.S. Cao, Q. Ye IHEP, Beijing, People's Republic of China
	The control system of Accelerator Driven Sub-critical System (ADS) should be a high-availability (HA) system with fault tolerant architecture, due to the potential utilizations of the ADS, such as separating and transmuting irradiated nuclear fuel. This paper discusses the HA software architecture of ADS control system which mainly composed by four softwares, which are 1) low floor communication and control system–-EPICS [1], 2) hierarchal programming framework of the accelerator–XAL [2], 3) monitoring and operating large scale control systems–Control System Studio (CSS) [1], 4) data storage and service infrastructure–HA database and server cluster. In addition, the recent development of ADS control system is briefly introduced in this paper.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-THPRO110
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THPRO111	Control System for BEPCII Linac Power Sub-system	controls, power-supply, operation, linac	3156
	X. Wu, X.C. Kong, Q. Le, S. Sun, Y. Zou IHEP, Beijing, People's Republic of China
	Power subsystem has been upgraded for energy improvement of the BEPCII Linac. As a result, new control system was in need. This paper proposes the designing and implementation about the power-supply control system. There are 156 sets of power supply in the system, which is divided into 6 parts, according to function. The control system is intended to make operations more convenient and efficient in beam regulation, which provides functions to meet such situations, like single regulation; restore the beam configures from data files; one-button to switch the electronic polarity (E-/E+). What’s more, the software provides a method of slow-change to protect the power supplies, when value change is too steep. Compare to the old system, this new software is more maintainable and extensible. This software is based on Qt, the GUI library for C++, and connects to the control box through the EPICS (Experimental Physics and Industrial Control System). The whole 156 sets of power supply are controlled by control boxes, which is ARM+FPGA (CPLD)-Structure front-end IO. This control system has assembled in BEPCII LINAC in September, which plays an important part in the following working.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-THPRO111
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THPRO115	Control System Design Considerations for MYRRHA ADS	controls, PLC, network, software	3162
	R. Modic, G. Pajor, K. Žagar Cosylab, Ljubljana, Slovenia L. Medeiros Romão, R. Salemme, D. Vandeplassche SCK•CEN, Mol, Belgium
	The accelerator (ACC) is the first step of the accelerator driven system (ADS). A high power continuous wave ACC is required for ADS applications. An essential aspect of ACC is beam availability. It must be an order of magnitude better than current best systems. High availability is achieved by fault tolerance and redundancy of the ACC. Three factors play a key role here: use of components in a high MTBF regime, parallel and serial redundancy of components, ability to repair failing elements. In terms of ACC controls system (CS) EPICS and Linux is chosen as proven technology. High availability will be achieved through making parts of the CS redundant. Subsystems shall be redundant by design. If failure of a subsystem is detected, pre-defined scenarios should kick-in. System model or "virtual accelerator" can be implemented to predict effects of parameter change, determine required configuration of set points for optimal performance or re-configuration in case of sub-system failure. Implementation of predictive diagnostics can harvest large amount of data created by archiving service. Prediction of failure allows for controlled shutdown as opposed to abrupt stop.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-THPRO115
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THPRO118	A PLC Test Bench at ESS	PLC, controls, timing, vacuum	3171
	D.P. Piso, M. Reščič ESS, Lund, Sweden G. Cijan Cosylab, Ljubljana, Slovenia R. Schmidt CERN, Geneva, Switzerland
	The European Spallation Source (ESS) is an accelerator- driven neutron spallation source. The Integrated Controls Systems (ICS) is responsible for providing control and mon- itoring for all parts of the machine (accelerator, target, neu- tron scattering systems and conventional facilities) [1]. A large number of applications have been identified across all parts of the facility where PLCs will be used: cryogenics, vacuum, water-cooling, power systems, safety and protec- tion systems. The Controls Division at ESS is deploying a PLC Test Bench. The motivation is to evaluate different technologies, to test PLCs and their integration into EPICS, to prototype control systems and use the test bench as PLC software development platform. This report defines the ar- chitecture of this infrastructure. The first stage to procure a first set of hardware and to perform initial tests has already been finished, consisting of a comparison between the per- formance of the s7plc EPICS driver and the Modbus EPICS driver. The results of these tests are discussed and future plans for this infrastructure are presented.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-THPRO118
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THPRO122	Control System of the Taiwan Photon Source for Commissioning	controls, power-supply, interface, Ethernet	3177
	Y.-S. Cheng, Y.-T. Chang, J. Chen, P.C. Chiu, K.T. Hsu, S.Y. Hsu, K.H. Hu, C.H. Huang, C.H. Kuo, D. Lee, C.Y. Liao, C.-J. Wang, C.Y. Wu NSRRC, Hsinchu, Taiwan
	Control system for the Taiwan Photon Source (TPS) project was implemented. The system is ready for commissioning of the accelerators. Final integration test is in proceeding. The EPICS was chosen as control system framework. The subsystems control interfaces include event based timing system, Ethernet based power supply control, corrector power supply control, PLC-based pulse magnet power supply control and machine protection system, insertion devices motion control system, various diagnostics, and etc. The standard hardware components had been installed and integrated, and the various IOCs (Input Output Controller) are implemented as various subsystems control platforms. Development and test of the high level and low level software systems are in proceeding. The efforts will be summarized at this report.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-THPRO122
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THPRO123	Control System of EPU48 in TPS	controls, hardware, interface, status	3180
	C.Y. Wu, J. Chen, Y.-S. Cheng, K.T. Hsu, D. Lee, C.Y. Liao NSRRC, Hsinchu, Taiwan
	Insertion device (ID) is a crucial component in third-generation synchrotron light sources, which can produces highly-brilliant, forward-directed and quasi-monochromatic radiation over a broad energy range for various experiments. In the phase I of the Taiwan Photon Source (TPS) project, two EPU48s (Elliptically Polarized Undulator) will be installed. The control system for EPU48 is based on the EPICS architecture. All control functionality coordinate by the cPCI EPICS IOC. The main control components include the motor with encoder for gap adjustment and phase moving, trimming power supply for corrector magnets, temperature sensors for ID environmental monitoring , interlock system (limit switches, tilt sensor, emergency button) for safety and supporting of on-the-fly experiments for beamline. Features and benefits of EPU48 control system will be summarized in this report.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-THPRO123
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THPRO124	Waveform Remote Supports for the Taiwan Photon Source Project	controls, interface, Ethernet, kicker	3183
	Y.-S. Cheng, J. Chen, P.C. Chiu, K.T. Hsu, K.H. Hu, C.Y. Liao, C.Y. Wu NSRRC, Hsinchu, Taiwan
	The 3 GeV Taiwan Photon Source (TPS) synchrotron light source is ready for commissioning. Various waveforms includes booster power supply current, pulse magnets current, beam signal, and etc. need monitoring to support commission and routine operation. Remote access of waveforms and spectrums from various digitizer, oscilloscope and spectrum analyzer were implemented to eliminate requirements of long distance cabling and to improve signal quality. Various EPICS supports of Ethernet-based oscilloscope and spectrum analyzer for the TPS are developed for filling pattern measurement, beam spectrum, pulse magnet power supply, and etc. Different operation interfaces to integrate waveform and spectrum acquisition are implemented by various GUI tools to satisfy all kinds of applications. The efforts will be summarized at this report.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-THPRO124
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THPRO126	Implementation of Machine Protection System for the Taiwan Photon Source	PLC, status, controls, vacuum	3189
	C.Y. Liao, J. Chen, Y.-S. Cheng, K.T. Hsu, K.H. Hu, D. Lee, C.Y. Wu NSRRC, Hsinchu, Taiwan
	The Taiwan Photon Source (TPS) is being constructed at the campus of the NSRRC (National Synchrotron Radiation Research Center) and commissioning expected in 2014. In order to prevent damage to accelerator components induced by various events, a global machine protection system (MPS) was installed and implemented. The MPS collect interlocks and beam dump requests from various system (thermo/flow of magnets, front-end, vacuum system, and orbit excursion interlock), perform decision, transmit dump beam request to E-Gun or RF system. The PLC based system with embedded EPICS IOC was used as a slow MPS which can delivery less than 8 msec reaction time. The fast MPS was dependent on event based timing system to deliver response time less than 5 μs. Trigger signal for post-mortem will also be distributed by the fast MPS. To ensure alive of the system, several self-diagnostics mechanisms include heartbeat and transient capture were implemented and tested. The MPS architecture, installation, and validation test results were presented in this report.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-THPRO126
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THPRO127	Current Status of TARLA Control System	controls, LabView, gun, operation	3192
	E. Kazancı, A.A. Aksoy, A. Aydin, C. Kaya, B. Tonga, O. Yavaş Ankara University, Accelerator Technologies Institute, Golbasi / Ankara, Turkey S. Özkorucuklu Istanbul University, Istanbul, Turkey
	Funding: This study was funded by Ministry of Development of Turkey by grant id DPT2006K-120470 Turkish Accelerator and Radiation Laboratory in Ankara (TARLA) is a Free Electron Laser (FEL) facility designed to generate Free Electron Laser (FEL) in 3-250 um wavelength range, based on four 9-cell Super Conducting (SC) cavities with 10MeV/m gradient each. TARLA electron gun has been in operation since 2012. Control system studies with EPICS are being run as test stand control and permanent system and each are running as individual projects while test stand control is in stable revision. The aim of the system design is to create a fast and reliable control system which is easy to operate and extensible for future upgrades/improvements. Now, the development and implementation of control system is ongoing in a parallel manner with the rest of the accelerator as well as the architectural design, In this study, the permanent and the test stand control systems of TARLA will be discussed. On behalf of TARLA Team
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-THPRO127
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THPRO130	MaRIE Injector Test-Stand Instrumentation & Control System Conceptual Design	controls, timing, operation, diagnostics	3198
	M. Pieck, D. Baros, E. Björklund, J.A. Faucett, J.D. Gilpatrick, J.D. Paul, F.E. Shelley LANL, Los Alamos, New Mexico, USA
	Funding: Work supported by LANL for the U.S. Department of Energy under contract W-7405-ENG-36. Los Alamos National Laboratory (LANL) has defined a signature science facility Matter-Radiation Interactions in Extremes (MaRIE) that builds on the existing Los Alamos Neutron Science Center (LANSCE) facility to provide unique experimental tools to develop next-generation materials that will perform predictably and on demand for currently unattainable lifetimes in extreme environments. At its core a new 42 keV XFEL will be coupled with a MW class proton accelerator. While the larger MaRIE project is working on a pre-conceptual design a smaller LANL team is working on an injector test-stand to be constructed at LANL in the course of preparation for MaRIE. The test stand will consist of a photo injector and an initial accelerating section with a bunch compression section. The goal of this facility will be to carry out studies that will determine optimal design parameters for the prototype injector, and to facilitate a direct demonstration of the required beam characteristics for MaRIE. This paper will give a brief overview of the proposed MaRIE facility and present the conceptual design for the injector test stand with the focus on the instrumentation and control system.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-THPRO130
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THPME042	Preliminary Functional Analysis and Operating Modes of ESS 704 MHz Superconducting Radio-Frequency Linac	cryomodule, controls, linac, SRF	3317
	N. Elias, C. Darve, J. Fydrych, A. Nordt, D.P. Piso ESS, Lund, Sweden
	The European Spallation Source (ESS) is one of Europe’s largest planned research infrastructures. The project is funded by a collaboration of 17 European countries and is under design and construction in Lund, Sweden. Three families of Superconducting Radio-Frequency (SRF) cavities are being prototyped, counting the spoke resonators with a geometric beta of 0.5, medium-beta elliptical cavities (β=0.67) and high beta elliptical cavities (β=0.86). The ESS linac will produce 2.86 ms long proton pulses with a repetition rate of 14 Hz (4 % duty cycle), a beam current of 62.5 mA and an average beam power of 5 MW. A control system is being developed to operate the different accelerator systems. All operating modes of the superconducting linac shall ensure a safe operation of the accelerator. This paper presents the preliminary functional analysis and the operating modes of the 704 MHz SRF linac.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-THPME042
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THPME143	Measuring Energy Spread Using Beam Screen Monitor and Four Strip-Line Electrodes for Hls II Injector*	quadrupole, LabView, emittance, brilliance	3587
	K. Tang, J. Liu, P. Lu, Q. Luo, B.G. Sun, H. Xu, J. Xu, Y.L. Yang, Z.R. Zhou, J.Y. Zou USTC/NSRL, Hefei, Anhui, People's Republic of China
	In order to nondestructively measure the beam energy spread with a beam energy of 0.8GeV in the injector at the upgrade project of Hefei Light Source (HLS II) in real time, a beam energy spread monitor (BESM) using beam position monitor (BPM) with four stripline electrodes has been developed. And a screen monitor (SM) near the BESM is used to measure beam energy spread destructively. This paper introduces in brief the beam position measurement system and beam transverse profile measurement system. The relationship between the transverse size at the BESM and at the SM (Flag3) is discussed in detail in this report. The result shows that energy spread measuring result of BESM and SM is 0.19% and 0.18% respectively. So we can draw a conclusion that the BESM is capable of nondestructively measuring the beam energy spread.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-THPME143
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THPRI014	Modular Stand-Alone Pulse Current Measurement System for Kicker and Septa at BESSY II and MLS	operation, controls, storage-ring, kicker	3794
	O. Dressler, J. Kuszynski, M. Markert HZB, Berlin, Germany
	Funding: Work supported by German Bundesministerium für Bildung und Forschung and Land Berlin. Pulse current measurement systems are introduced for all pulsed deflection magnets in the BESSY II and MLS storage rings which acquire data autonomously. The measured pulse currents are displayed locally or remotely as single values or graphs. The data acquisition systems utilize commercial PXI chassis by National Instruments (NI), controllers and 2-channel 14bit, 100MHz high-speed digitizer cards. Measurement routines are programmed with LabVIEW 2012. Special in-house custom made ‘CA-Lab’ client software provides interface for the independent systems to write values into pre-assigned process variables of the EPICS control system. The retrieved data can be displayed in the machine control system and stored in a data archive. This allows shot to shot assessment of the pulse currents for accelerator operation and troubleshooting as well as long term data evaluation in correlation with other relevant machine parameters. This report also describes the set-up for the pulse current measurements and the structured programming for the data acquisition. Limits of the applied measurement technique and experience with the information gained for the accelerator operation will be explained.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-THPRI014
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Paper

Title

Other Keywords

Page

MOPME055

Design and Construction of a Remote Control for the CADS Digital Power Supplies

controls, FPGA, power-supply, hardware

498

Y.Y. Du, J.S. Cao, Q. Ye
IHEP, Beijing, People's Republic of China

A remote controlled power supply system includes a data processing system and control at least 76 power supplies, which is designed for the China Accelerator Driven Subcritical system (C-ADS) power supplies system. The system Construction in the mode of integrated control with 1U chassis board, and the hardware parts control core based on Field Programmable Gate Array (FPGA). The software part adopts Experimental Physics and Industrial Control System (EPICS) platform with database and TCP/IP protocol, the administrators can acquire the working parameter through a remote control equipment and control the power supply at the remote site.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-MOPME055

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TUPRO019

Localisation of Beam Offset Jitter Sources at ATF2

quadrupole, experiment, simulation, damping

1049

J. Pfingstner, H. Garcia, A. Latina, M. Patecki, D. Schulte, R. Tomás
CERN, Geneva, Switzerland

For the commissioning and operation of modern particle accelerators, automated error detection and diagnostics methods are becoming increasingly important. In this paper, we present two such methods, which are capable of localising sources of beam offset jitter with a combination of correlation studies and so called degree of freedom plots. The methods were applied to the ATF2 beam line at KEK, where one of the major goals is the reduction of the beam offset jitter. Results of this localisation are shown in this paper. A big advantage of the presented method is its high robustness especially to varying optics parameters. Therefore, we believe that the developed beam offset jitter localisation methods can be easily applied to other accelerators.

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reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-TUPRO019

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THPRO109

Design and Status of the SuperKEKB Accelerator Control Network System

network, controls, linac, Ethernet

3150

M. Iwasaki, K. Furukawa, T.T. Nakamura, T. Obina, S. Sasaki, M. Satoh
KEK, Ibaraki, Japan
T. Aoyama, T. Nakamura
Mitsubishi Electric System & Service Co., Ltd, Tsukuba, Japan

We have upgraded the accelerator control network system for SuperKEKB, the upgrade of the KEKB asymmetric energy e⁺e⁻ collider for the next generation B-factory experiment in Japan. For SuperKEKB, the accelerator control network system with the higher performance of the wider bandwidth data transfer, and more reliable and redundant configuration, is required, to ensure the robust operations under the 40 times higher luminosity. We install the 10 gigabit Ethernet (10GbE) network switches for the wider network bandwidth and optical cables to construct the redundant network. We reconfigure the network design to connect the accelerator control network and the KEK laboratory network to enhance the security. For the beamline construction and the accelerator components maintenance, we install the new wireless network system consists with the Leaky Coaxial (LCX) cable antennas and collinear antennas, which have good radiation hardness of >1MGy, into the 3 km circumference accelerator tunnel. In this paper, we describe the design and current status of the SuperKEKB accelerator control network system.

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reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-THPRO109

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THPRO110

High Availability Software Architecture of C-ADS Control System

controls, database, software, software-architecture

3153

P.F. Wang, J.S. Cao, Q. Ye
IHEP, Beijing, People's Republic of China

The control system of Accelerator Driven Sub-critical System (ADS) should be a high-availability (HA) system with fault tolerant architecture, due to the potential utilizations of the ADS, such as separating and transmuting irradiated nuclear fuel. This paper discusses the HA software architecture of ADS control system which mainly composed by four softwares, which are 1) low floor communication and control system–-EPICS [1], 2) hierarchal programming framework of the accelerator–XAL [2], 3) monitoring and operating large scale control systems–Control System Studio (CSS) [1], 4) data storage and service infrastructure–HA database and server cluster. In addition, the recent development of ADS control system is briefly introduced in this paper.

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reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-THPRO110

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THPRO111

Control System for BEPCII Linac Power Sub-system

controls, power-supply, operation, linac

3156

X. Wu, X.C. Kong, Q. Le, S. Sun, Y. Zou
IHEP, Beijing, People's Republic of China

Power subsystem has been upgraded for energy improvement of the BEPCII Linac. As a result, new control system was in need. This paper proposes the designing and implementation about the power-supply control system. There are 156 sets of power supply in the system, which is divided into 6 parts, according to function. The control system is intended to make operations more convenient and efficient in beam regulation, which provides functions to meet such situations, like single regulation; restore the beam configures from data files; one-button to switch the electronic polarity (E-/E+). What’s more, the software provides a method of slow-change to protect the power supplies, when value change is too steep. Compare to the old system, this new software is more maintainable and extensible. This software is based on Qt, the GUI library for C++, and connects to the control box through the EPICS (Experimental Physics and Industrial Control System). The whole 156 sets of power supply are controlled by control boxes, which is ARM+FPGA (CPLD)-Structure front-end IO. This control system has assembled in BEPCII LINAC in September, which plays an important part in the following working.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-THPRO111

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THPRO115

Control System Design Considerations for MYRRHA ADS

controls, PLC, network, software

3162

R. Modic, G. Pajor, K. Žagar
Cosylab, Ljubljana, Slovenia
L. Medeiros Romão, R. Salemme, D. Vandeplassche
SCK•CEN, Mol, Belgium

The accelerator (ACC) is the first step of the accelerator driven system (ADS). A high power continuous wave ACC is required for ADS applications. An essential aspect of ACC is beam availability. It must be an order of magnitude better than current best systems. High availability is achieved by fault tolerance and redundancy of the ACC. Three factors play a key role here: use of components in a high MTBF regime, parallel and serial redundancy of components, ability to repair failing elements. In terms of ACC controls system (CS) EPICS and Linux is chosen as proven technology. High availability will be achieved through making parts of the CS redundant. Subsystems shall be redundant by design. If failure of a subsystem is detected, pre-defined scenarios should kick-in. System model or "virtual accelerator" can be implemented to predict effects of parameter change, determine required configuration of set points for optimal performance or re-configuration in case of sub-system failure. Implementation of predictive diagnostics can harvest large amount of data created by archiving service. Prediction of failure allows for controlled shutdown as opposed to abrupt stop.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-THPRO115

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THPRO118

A PLC Test Bench at ESS

PLC, controls, timing, vacuum

3171

D.P. Piso, M. Reščič
ESS, Lund, Sweden
G. Cijan
Cosylab, Ljubljana, Slovenia
R. Schmidt
CERN, Geneva, Switzerland

The European Spallation Source (ESS) is an accelerator- driven neutron spallation source. The Integrated Controls Systems (ICS) is responsible for providing control and mon- itoring for all parts of the machine (accelerator, target, neu- tron scattering systems and conventional facilities) [1]. A large number of applications have been identified across all parts of the facility where PLCs will be used: cryogenics, vacuum, water-cooling, power systems, safety and protec- tion systems. The Controls Division at ESS is deploying a PLC Test Bench. The motivation is to evaluate different technologies, to test PLCs and their integration into EPICS, to prototype control systems and use the test bench as PLC software development platform. This report defines the ar- chitecture of this infrastructure. The first stage to procure a first set of hardware and to perform initial tests has already been finished, consisting of a comparison between the per- formance of the s7plc EPICS driver and the Modbus EPICS driver. The results of these tests are discussed and future plans for this infrastructure are presented.

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reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-THPRO118

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THPRO122

Control System of the Taiwan Photon Source for Commissioning

controls, power-supply, interface, Ethernet

3177

Y.-S. Cheng, Y.-T. Chang, J. Chen, P.C. Chiu, K.T. Hsu, S.Y. Hsu, K.H. Hu, C.H. Huang, C.H. Kuo, D. Lee, C.Y. Liao, C.-J. Wang, C.Y. Wu
NSRRC, Hsinchu, Taiwan

Control system for the Taiwan Photon Source (TPS) project was implemented. The system is ready for commissioning of the accelerators. Final integration test is in proceeding. The EPICS was chosen as control system framework. The subsystems control interfaces include event based timing system, Ethernet based power supply control, corrector power supply control, PLC-based pulse magnet power supply control and machine protection system, insertion devices motion control system, various diagnostics, and etc. The standard hardware components had been installed and integrated, and the various IOCs (Input Output Controller) are implemented as various subsystems control platforms. Development and test of the high level and low level software systems are in proceeding. The efforts will be summarized at this report.

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reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-THPRO122

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THPRO123

Control System of EPU48 in TPS

controls, hardware, interface, status

3180

C.Y. Wu, J. Chen, Y.-S. Cheng, K.T. Hsu, D. Lee, C.Y. Liao
NSRRC, Hsinchu, Taiwan

Insertion device (ID) is a crucial component in third-generation synchrotron light sources, which can produces highly-brilliant, forward-directed and quasi-monochromatic radiation over a broad energy range for various experiments. In the phase I of the Taiwan Photon Source (TPS) project, two EPU48s (Elliptically Polarized Undulator) will be installed. The control system for EPU48 is based on the EPICS architecture. All control functionality coordinate by the cPCI EPICS IOC. The main control components include the motor with encoder for gap adjustment and phase moving, trimming power supply for corrector magnets, temperature sensors for ID environmental monitoring , interlock system (limit switches, tilt sensor, emergency button) for safety and supporting of on-the-fly experiments for beamline. Features and benefits of EPU48 control system will be summarized in this report.

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reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-THPRO123

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THPRO124

Waveform Remote Supports for the Taiwan Photon Source Project

controls, interface, Ethernet, kicker

3183

Y.-S. Cheng, J. Chen, P.C. Chiu, K.T. Hsu, K.H. Hu, C.Y. Liao, C.Y. Wu
NSRRC, Hsinchu, Taiwan

The 3 GeV Taiwan Photon Source (TPS) synchrotron light source is ready for commissioning. Various waveforms includes booster power supply current, pulse magnets current, beam signal, and etc. need monitoring to support commission and routine operation. Remote access of waveforms and spectrums from various digitizer, oscilloscope and spectrum analyzer were implemented to eliminate requirements of long distance cabling and to improve signal quality. Various EPICS supports of Ethernet-based oscilloscope and spectrum analyzer for the TPS are developed for filling pattern measurement, beam spectrum, pulse magnet power supply, and etc. Different operation interfaces to integrate waveform and spectrum acquisition are implemented by various GUI tools to satisfy all kinds of applications. The efforts will be summarized at this report.

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reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-THPRO124

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THPRO126

Implementation of Machine Protection System for the Taiwan Photon Source

PLC, status, controls, vacuum

3189

C.Y. Liao, J. Chen, Y.-S. Cheng, K.T. Hsu, K.H. Hu, D. Lee, C.Y. Wu
NSRRC, Hsinchu, Taiwan

The Taiwan Photon Source (TPS) is being constructed at the campus of the NSRRC (National Synchrotron Radiation Research Center) and commissioning expected in 2014. In order to prevent damage to accelerator components induced by various events, a global machine protection system (MPS) was installed and implemented. The MPS collect interlocks and beam dump requests from various system (thermo/flow of magnets, front-end, vacuum system, and orbit excursion interlock), perform decision, transmit dump beam request to E-Gun or RF system. The PLC based system with embedded EPICS IOC was used as a slow MPS which can delivery less than 8 msec reaction time. The fast MPS was dependent on event based timing system to deliver response time less than 5 μs. Trigger signal for post-mortem will also be distributed by the fast MPS. To ensure alive of the system, several self-diagnostics mechanisms include heartbeat and transient capture were implemented and tested. The MPS architecture, installation, and validation test results were presented in this report.

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THPRO127

Current Status of TARLA Control System

controls, LabView, gun, operation

3192

E. Kazancı, A.A. Aksoy, A. Aydin, C. Kaya, B. Tonga, O. Yavaş
Ankara University, Accelerator Technologies Institute, Golbasi / Ankara, Turkey
S. Özkorucuklu
Istanbul University, Istanbul, Turkey

Funding: This study was funded by Ministry of Development of Turkey by grant id DPT2006K-120470
Turkish Accelerator and Radiation Laboratory in Ankara (TARLA) is a Free Electron Laser (FEL) facility designed to generate Free Electron Laser (FEL) in 3-250 um wavelength range, based on four 9-cell Super Conducting (SC) cavities with 10MeV/m gradient each. TARLA electron gun has been in operation since 2012. Control system studies with EPICS are being run as test stand control and permanent system and each are running as individual projects while test stand control is in stable revision. The aim of the system design is to create a fast and reliable control system which is easy to operate and extensible for future upgrades/improvements. Now, the development and implementation of control system is ongoing in a parallel manner with the rest of the accelerator as well as the architectural design, In this study, the permanent and the test stand control systems of TARLA will be discussed.
On behalf of TARLA Team

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THPRO130

MaRIE Injector Test-Stand Instrumentation & Control System Conceptual Design

controls, timing, operation, diagnostics

3198

M. Pieck, D. Baros, E. Björklund, J.A. Faucett, J.D. Gilpatrick, J.D. Paul, F.E. Shelley
LANL, Los Alamos, New Mexico, USA

Funding: Work supported by LANL for the U.S. Department of Energy under contract W-7405-ENG-36.
Los Alamos National Laboratory (LANL) has defined a signature science facility Matter-Radiation Interactions in Extremes (MaRIE) that builds on the existing Los Alamos Neutron Science Center (LANSCE) facility to provide unique experimental tools to develop next-generation materials that will perform predictably and on demand for currently unattainable lifetimes in extreme environments. At its core a new 42 keV XFEL will be coupled with a MW class proton accelerator. While the larger MaRIE project is working on a pre-conceptual design a smaller LANL team is working on an injector test-stand to be constructed at LANL in the course of preparation for MaRIE. The test stand will consist of a photo injector and an initial accelerating section with a bunch compression section. The goal of this facility will be to carry out studies that will determine optimal design parameters for the prototype injector, and to facilitate a direct demonstration of the required beam characteristics for MaRIE. This paper will give a brief overview of the proposed MaRIE facility and present the conceptual design for the injector test stand with the focus on the instrumentation and control system.

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THPME042

Preliminary Functional Analysis and Operating Modes of ESS 704 MHz Superconducting Radio-Frequency Linac

cryomodule, controls, linac, SRF

3317

N. Elias, C. Darve, J. Fydrych, A. Nordt, D.P. Piso
ESS, Lund, Sweden

The European Spallation Source (ESS) is one of Europe’s largest planned research infrastructures. The project is funded by a collaboration of 17 European countries and is under design and construction in Lund, Sweden. Three families of Superconducting Radio-Frequency (SRF) cavities are being prototyped, counting the spoke resonators with a geometric beta of 0.5, medium-beta elliptical cavities (β=0.67) and high beta elliptical cavities (β=0.86). The ESS linac will produce 2.86 ms long proton pulses with a repetition rate of 14 Hz (4 % duty cycle), a beam current of 62.5 mA and an average beam power of 5 MW. A control system is being developed to operate the different accelerator systems. All operating modes of the superconducting linac shall ensure a safe operation of the accelerator. This paper presents the preliminary functional analysis and the operating modes of the 704 MHz SRF linac.

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THPME143

Measuring Energy Spread Using Beam Screen Monitor and Four Strip-Line Electrodes for Hls II Injector*

quadrupole, LabView, emittance, brilliance

3587

K. Tang, J. Liu, P. Lu, Q. Luo, B.G. Sun, H. Xu, J. Xu, Y.L. Yang, Z.R. Zhou, J.Y. Zou
USTC/NSRL, Hefei, Anhui, People's Republic of China

In order to nondestructively measure the beam energy spread with a beam energy of 0.8GeV in the injector at the upgrade project of Hefei Light Source (HLS II) in real time, a beam energy spread monitor (BESM) using beam position monitor (BPM) with four stripline electrodes has been developed. And a screen monitor (SM) near the BESM is used to measure beam energy spread destructively. This paper introduces in brief the beam position measurement system and beam transverse profile measurement system. The relationship between the transverse size at the BESM and at the SM (Flag3) is discussed in detail in this report. The result shows that energy spread measuring result of BESM and SM is 0.19% and 0.18% respectively. So we can draw a conclusion that the BESM is capable of nondestructively measuring the beam energy spread.

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THPRI014

Modular Stand-Alone Pulse Current Measurement System for Kicker and Septa at BESSY II and MLS

operation, controls, storage-ring, kicker

3794

O. Dressler, J. Kuszynski, M. Markert
HZB, Berlin, Germany

Funding: Work supported by German Bundesministerium für Bildung und Forschung and Land Berlin.
Pulse current measurement systems are introduced for all pulsed deflection magnets in the BESSY II and MLS storage rings which acquire data autonomously. The measured pulse currents are displayed locally or remotely as single values or graphs. The data acquisition systems utilize commercial PXI chassis by National Instruments (NI), controllers and 2-channel 14bit, 100MHz high-speed digitizer cards. Measurement routines are programmed with LabVIEW 2012. Special in-house custom made ‘CA-Lab’ client software provides interface for the independent systems to write values into pre-assigned process variables of the EPICS control system. The retrieved data can be displayed in the machine control system and stored in a data archive. This allows shot to shot assessment of the pulse currents for accelerator operation and troubleshooting as well as long term data evaluation in correlation with other relevant machine parameters. This report also describes the set-up for the pulse current measurements and the structured programming for the data acquisition. Limits of the applied measurement technique and experience with the information gained for the accelerator operation will be explained.

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