Keyword: power-supply
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MOPV015 Control System of the SRILAC Project at RIBF controls, EPICS, PLC, operation 147
  • A. Uchiyama, M. Fujimaki, N. Fukunishi, Y. Higurashi, E. Ikezawa, H. Imao, O. Kamigaito, M. Kidera, M. Komiyama, K. Kumagai, T. Nagatomo, T. Nakagawa, T. Nishi, J. Ohnishi, K. Ozeki, N. Sakamoto, K. Suda, T. Watanabe, Y. Watanabe, K. Yamada
    RIKEN Nishina Center, Wako, Japan
  • A. Kamoshida
    National Instruments Japan Corporation, MInato-ku, Tokyo, Japan
  • K. Kaneko, R. Koyama, T.O. Ohki, K. Oyamada, M. Tamura, H. Yamauchi, Y.A. Yusa
    SHI Accelerator Service Ltd., Tokyo, Japan
  At RIKEN Nishina Center, the SRILAC project has been launched for the search experiments of super-heavy-elements with atomic numbers of 119 and higher. The main points of the SRILAC project are as follows. Superconducting RIKEN Linear Accelerator (SRILAC) was newly installed at downstream of existing accelerator (RIKEN Linear Accelerator: RILAC) to enhance beam energy. Additionally, a new RIKEN 28-GHz superconducting electron cyclotron resonance ion source has been implemented at the frontend of SRILAC to increase beam intensity. With that, the SRILAC control system requires corrections and upgrades to the shortcomings of previous RILAC control system, for example control methods for electromagnet power supplies, an machine protection system and an archive system. Moreover, there was also a issue to be solved for methods of integration with small LabVIEW-based systems. To operate efficiently in the SRILAC project, a distributed control system utilizing EPICS should be adopted as in RIBF, a higher-level application protocol needs to be integrated to EPICS Channel Access protocol. In this conference, we report the system implementation, developed tool in detail about SRILAC project.  
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About • Received ※ 13 October 2021       Revised ※ 22 October 2021       Accepted ※ 25 February 2022       Issue date ※ 05 March 2022
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TUBR04 Control System of Cryomodule Test Facilities for SHINE* controls, cryomodule, cryogenics, monitoring 353
  • H.Y. Wang, G.H. Chen, J.F. Chen, J.G. Ding, M. Li, Y.J. Liu, Q.R. Mi, H.F. Miao, C.L. Yu
    SSRF, Shanghai, People’s Republic of China
  Funding: Work supported by Shanghai Municipal Science and Technology Major Project (Grant No. 2017SHZDZX02)
Shanghai HIgh repetition rate XFEL aNd Extreme light facility (SHINE) is under construction. The 8 GeV superconducting Linac consists of seventy-five 1.3 GHz and two 3.9 GHz cryomodules. A cryomodule assembling and test workshop is established. Multiple platforms have been built for cryomodule and superconducting cavity test, including two vertical test platforms, two horizontal test platform, one multiple test platform and one liquid helium visualization platform. The local control systems are all based on Yokogawa PLC, which monitor and control the process variables such as temperature, pressure, liquid level and power of the heater. PID and other algorithms are used to keep liquid level and power balance. EPICS is adopt to integrate these platforms’along with vacuum devices, solid state amplifiers, LLRF and RF measurement system, etc. The details of the control system design, development and commissioning will be reported in this paper.
slides icon Slides TUBR04 [22.084 MB]  
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About • Received ※ 22 October 2021       Accepted ※ 11 February 2022       Issue date ※ 24 February 2022  
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TUPV032 Challenges of Automating the Photocathode Fabrication Process at CERN controls, cathode, laser, electron 464
  • C. Charrondière, E. Chevallay, T. Zilliox
    CERN, Geneva, Switzerland
  The CERN Photoemission Laboratory was founded in 1989 with the goal of studying laser-driven electron sources, for producing high-brightness electron beams within the framework of the Compact Linear Collider (CLIC) study. To produce these photocathodes, two processes run in parallel. The first process, which is slow and asynchronous, controls and monitors the evaporation of photoemissive material. For this first step several power supplies are controlled to evaporate different metals through the Joule effect, with the power maintained constant in time and the thickness deposited monitored. The second process is synchronized with a laser trigger ranging from 0.1 to 50Hz, where the photocurrent and laser energy are measured to calculate the Quantum Efficiency. The control system for these processes has recently been renovated to benefit from the modularity of a PXI-based real-time environment using the standard CERN MiddleWare communication layer (CMW). This paper describes the challenges of the fabrication process as well as the flexibility introduced by using a PXI system.  
poster icon Poster TUPV032 [0.958 MB]  
DOI • reference for this paper ※  
About • Received ※ 08 October 2021       Revised ※ 18 October 2021       Accepted ※ 20 November 2021       Issue date ※ 01 December 2021
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TUPV036 An Evaluation of Schneider M580 HSBY PLC Redundancy in the R744 System A Cooling Unit PLC, network, controls, operation 484
  • D.I. Teixeira
    University of Cape Town, Cape Town, South Africa
  • L. Davoine, W.K. Hulek, L. Zwalinski
    CERN, Meyrin, Switzerland
  The Detector Technologies group at CERN has developed a 2-stage transcritical R744 cooling system as a service for future detector cooling. This is the first system in operation at CERN where Schneider HSBY (Hot Standby) redundant PLCs are used. This cooling system provides a good opportunity to test the Schneider redundant PLC system and understand the operation, limitations and probability of failure in a con-trolled environment. The PLC redundancy is achieved by connecting Schneider M580 HSBY redundant PLCs to the system where one is the primary which operates the system and the other is in standby mode. A series of tests have been developed to understand the operation and failure modes of the PLCs by simulating different primary PLC failures and observing whether the standby PLC can seamlessly take over the system operation.  
poster icon Poster TUPV036 [1.154 MB]  
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About • Received ※ 09 October 2021       Revised ※ 29 October 2021       Accepted ※ 20 November 2021       Issue date ※ 31 December 2021
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WEAL03 The Status of Fast Obit Feedback System of HEPS timing, hardware, feedback, controls 540
  • P. Zhu, Y.C. He, D.P. Jin, L. Zeng, Y.L. Zhang
    IHEP, Beijing, People’s Republic of China
  • D.Y. Wang
    DNSC, Dongguan, People’s Republic of China
  • L. Wang, X. Wu, Z.X. Xie, K. Xue
    IHEP CSNS, Guangdong Province, People’s Republic of China
  In order to further meet the needs of major national strategies and basic scientific research, High Energy Photon Source (HEPS) will be a high-performance fourth-generation synchrotron radiation source in Beijing, which will build more than 90 high-performance beamline stations. In order to ensure the high-performance operation of each beam line, the stability of the beam orbit near the light source output point is extremely important. As one of the key guarantees for the stability of the electron beam orbit, The FOFB system can suppress the beam orbit disturbance within a certain bandwidth to an acceptable range. This article introduces the currently progress of the FOFB system, including: the overall architecture scheme and key technical routes; the substation design following the ATCA mechanical architecture; the BPM data acquisition and high-speed transmission using high-performance Rocket I/O transmission Mechanism; embedded high-performance DSP for fast multiplication calculation to realize SVD, etc. The entire system design is progressing in an orderly manner.  
slides icon Slides WEAL03 [40.593 MB]  
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About • Received ※ 19 October 2021       Revised ※ 22 October 2021       Accepted ※ 21 November 2021       Issue date ※ 23 February 2022
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WEBR03 The Fast Protection System for CSNS Accelerator ion-source, hardware, operation, linac 593
  • Y.L. Zhang, D.P. Jin, P. Zhu
    IHEP, Beijing, People’s Republic of China
  The fast protection system for CSNS accelerator is a FPGA based protection system. The VME bus and SFP was adopted by the FPS. The FPS includes one central station and several sub-stations, and connnections between the central and the sub-stations are in star style. Two kinds of beam stopping modes are designed and implemented by FPS, one is the transient beam stopping and auto recovery mode, the other is the permanent beam stopping mode. The measured response time for the FPS is less than 1.5 micro-seconds.  
slides icon Slides WEBR03 [2.773 MB]  
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About • Received ※ 19 October 2021       Revised ※ 25 January 2022       Accepted ※ 06 February 2022       Issue date ※ 11 February 2022
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WEPV013 Design of Magnet Measurement System Based on Multi-Hall Sensor controls, feedback, site, factory 653
  • B.J. Wang, Y.H. Guo, R. Wang, N. Xie
    IMP/CAS, Lanzhou, People’s Republic of China
  High-precision magnetic field measurement and control technique significantly guarantees the accurate realization of the magnetic confinement of accelerators. Using real-time magnetic field intensity as the feedback to adjust the magnetic field current input can be a promising strategy. However, the measurement accuracy of the Hall-sensor is hard to meet feedback requirements because of multiple affection from external factors. Meanwhile, the NMR(Nuclear Magnetic Resonance sensor), which can provide high-precision magnetic field measurement, can hardly meet the requirements against the real-time control due to its strict requirements on the uniformity of the measured magnetic field, as well as its low data acquisition speed. Therefore, a magnetic field measurement system based on multi-Hall sensors is designed to solve this problem. Four Hall-sensors are used to measure the target magnetic field in this system. An Adaptive fusion algorithm is used to fused collected values to obtain the best estimate of the magnetic field intensity. This system effectively improves the accuracy of magnetic field measurement and ensures the instantaneity of the measurement.  
poster icon Poster WEPV013 [0.841 MB]  
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About • Received ※ 09 October 2021       Revised ※ 22 October 2021       Accepted ※ 21 November 2021       Issue date ※ 06 December 2021
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WEPV028 CompactRIO Custom Module Design for the Beamline’s Control System at Sirius controls, hardware, FPGA, software 715
  • L.S. Perissinotto, F.H. Cardoso, M.M. Donatti
    LNLS, Campinas, Brazil
  The CompactRIO (cRIO) platform is the standard hardware choice for data acquisition, controls and synchronization tasks at Sirius beamlines. The cRIO controllers are equipped with a processor running a Real-Time Linux and contains an embedded FPGA, that could be programmed using Labview. The platform supports industrial I/O modules for a large variety of signals, sensors, and interfaces. Even with many commercial modules available, complex synchrotron radiation experiments demands customized signal acquisition hardware to achieve proper measurements and control system’s integration. This work aims to describe hardware and software aspects of the first custom 8-channel differential digital I/O module (compatible with RS485/RS422) developed for the Sirius beamlines. The module is compliant with cRIO specification and can perform differential communication with maximum 20 MHz update rate. The features, architecture and its benchmark tests will be presented. This project is part of an effort to expand the use of the cRIO platform in scientific experiments at Sirius and brings the opportunity to increase the expertise to develop custom hardware solutions to cover future applications.  
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About • Received ※ 09 October 2021       Revised ※ 21 October 2021       Accepted ※ 27 February 2022       Issue date ※ 01 March 2022
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WEPV037 Development of a Voltage Interlock System for Normal-Conducting Magnets in the Neutrino Experimental Facility at J-PARC experiment, proton, operation, controls 738
  • K. Nakayoshi, Y. Fujii, K. Sakashita
    KEK, Tsukuba, Japan
  We are upgrading a beamline of neutrino experimental facility at J-PARC to realize its 1.3MW operation. One of the upgrade items is to strengthen machine protection interlocks at the beamline. So far, we have developed an interlock system that monitors the output current of the power supplies for normal-conducting(NC) magnets at the primary beamline. On the other hand, we observed an event that a coil-short in one of bending magnets at a beam transport line at J-PARC (3-50BT) happened in 2019 and it caused a drift of beam orbit over the time. Our present interlock system can not detect a similar coil-short in the magnet while such change of the beam orbit may cause a serious trouble. One of possible way to detect such coil-short is to monitor a voltage of the magnet coil. Actually, a significant voltage drop between layers of the coil was observed for the 3-50BT magnet coil-short. Focusing on the fact, we are developing a system that constantly monitors the voltage value of the magnets at primary beamline and issues an interlock when there is a fluctuation exceeding a threshold value. We report the progress of development of the system.  
poster icon Poster WEPV037 [7.195 MB]  
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About • Received ※ 27 October 2021       Revised ※ 11 November 2021       Accepted ※ 21 November 2021       Issue date ※ 12 January 2022
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