Keyword: EPICS
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WEPAF030 HEPS High-Level Software Architecture Plan database, software, controls, operation 1884
 
  • C.P. Chu, Y.S. Qiao, C.H. Wang
    IHEP, Beijing, People's Republic of China
  • H.H. Lv
    SINAP, Shanghai, People's Republic of China
 
  Funding: Work supported by the Chinese Academy of Science and the HEPS-TF Project.
The High Energy Photon Source (HEPS) is a planned ultra-low emittance synchrotron radiation based light source which requires high precession control systems for both accelerator and beamlines. Such kind of accelerators will require extremely sophisticated high-level control software for both accelerator and beamline operation to achieve not only the demanded precision but also high reliability. This paper outlines the high-level application software architecture design including relational data-bases, software platforms, and advanced controls with machine learning (ML) techniques. Early plan for beam-line control is also reported. For better quality control and easy maintenance, the high-level applications will be built upon matured software platforms. Also, the HEPS High-Level Software team will collaborate with EPICS community for improving the software platforms.
 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2018-WEPAF030  
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WEPAF054 Online Multi Objective Optimisation at Diamond Light Source injection, sextupole, controls, lattice 1944
 
  • M. Apollonio, R. Bartolini, R.T. Fielder, I.P.S. Martin
    DLS, Oxfordshire, United Kingdom
  • R. Bartolini
    JAI, Oxford, United Kingdom
  • G. Henderson
    Oxford University, Physics Department, Oxford, Oxon, United Kingdom
  • J. Rogers
    Imperial College of Science and Technology, Department of Physics, London, United Kingdom
 
  At Diamond Light Source we have developed an Optimization Package currently used online to improve the performance of the machine, usually measured in terms of lifetime, injection efficiency or beam disturbance at injection. The tool is flexible in that control variables in order to optimise objectives (or their functions) can be easily specified by means of EPICS process variables (PV), making it suitable for virtually any sort of optimization. At present three different algorithms can be used to perform optimizations in a multi-objective fashion: Multi-Objective Genetic Algorithm (MOGA), Particle Swarm Optimizer (MOPSO) and Simulated Annealing (MOSA). We present a series of tests aimed at characterizing the algorithm as well as improving the performance of the machine itself.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2018-WEPAF054  
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WEPAF090 CS-Studio Operator Training at ReA3 interface, controls, status, power-supply 2061
 
  • T. Summers, D.B. Crisp
    NSCL, East Lansing, Michigan, USA
  • A.C.C. Villari
    FRIB, East Lansing, Michigan, USA
 
  Funding: This material is based upon work supported by the National Science Foundation under Grant No. PHY-1565546
In the past year, Control System Studio (CS-Studio) has become the predominant graphical user interface tool at ReA3, the 3 MeV/u rare isotope beam Reaccelerator at Michigan State University's National Superconducting Cyclotron Laboratory. CS-Studio is a set of control system interface tools that include operator interfaces, history plots, an alarm handler, save/restore, scanning, and more. Becoming an effective user of these tools takes considerable time and training. This contribution will describe the challenges and strategies for training operators on the general use of the CS-Studio tools. It will describe the use of a simulated user interface environment for training operators at any time without affecting the operating facility.
 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2018-WEPAF090  
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WEPAK014 A New Pulse Magnet Control System in the KEK Electron Positron LINAC controls, power-supply, timing, software 2121
 
  • Y. Enomoto, K. Furukawa, T. Natsui, M. Satoh
    KEK, Ibaraki, Japan
  • H.S. Saotome
    Kanto Information Service (KIS), Accelerator Group, Ibaraki, Japan
 
  In 2017, sixty-four pules magnets were installed in the KEK e+/e LINAC for simultaneous injection to four different rings. Since each ring requires different injection energy, magnetic field in the LINAC has to be changed shot by shot (every 20 ms) according to the destination of the beam. To realize such operation, a PXI express based new control system was installed. Each unit, which consists of an event receiver board, a DAC board, and a ADC board, can set and monitor output current up to 8 pulsed power supply in 16 bit resolution. The timing and control system are integrated in that of the LINAC by using Micro-Research Finland's PXI event receiver board. In terms of software, Windows 8.1 and LabVIEW 2016 were mainly adopted to control the hardware. EPICS channel access (CA) protocol was used to communicate with operator's interface panels. In addition to real-time monitoring by EPICS CA and logging by CSS archiver every 10 s, data are logged every shot (every 20 ms) in the text file together with timestamp, shot ID and destination. At present, thirteen units are stably in operation to control 64 magnets. Further installation of the system is planned in 2018.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2018-WEPAK014  
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WEPAK016 RF Monitor System for SuperKEKB Injector Linac linac, FPGA, controls, data-acquisition 2128
 
  • H. Katagiri, M. Akemoto, D.A. Arakawa, T. Matsumoto, T. Miura, F. Qiu, Y. Yano
    KEK, Ibaraki, Japan
 
  A new radio frequency (RF) monitor system for the SuperKEKB project has been developed at the KEK in-jector linac. The RF monitor unit, which consists of an analog I/Q demodulator, ADC/DAC board, and FPGA board achieved 50-Hz data acquisition and beam mode identification. On the RF monitor, the amplitude and phase measurement precision has achieved 0.1% rms and 0.1° rms, respectively. Sixty RF monitor units have been installed in the linac. The present status of the RF monitor system will be re-ported.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2018-WEPAK016  
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THYGBE3 RF Controls for High-Q Cavities for the LCLS-II LLRF, controls, cavity, cryomodule 2929
 
  • C. Serrano, K.S. Campbell, L.R. Doolittle, G. Huang, A. Ratti
    LBNL, Berkeley, California, USA
  • R. Bachimanchi, C. Hovater
    JLab, Newport News, Virginia, USA
  • A.L. Benwell, M. Boyes, G.W. Brown, D. Cha, G. Dalit, J.A. Diaz Cruz, J. Jones, R.S. Kelly, A. McCollough
    SLAC, Menlo Park, California, USA
  • B.E. Chase, E. Cullerton, J. Einstein-Curtis, J.P. Holzbauer, D.W. Klepec, Y.M. Pischalnikov, W. Schappert
    Fermilab, Batavia, Illinois, USA
  • L.R. Dalesio, M.A. Davidsaver
    Osprey DCS LLC, Ocean City, USA
 
  Funding: This work was supported by the LCLS-II Project and the U.S. Department of Energy, Contract n. DE-AC02-76SF00515.
The SLAC National Accelerator Laboratory is building LCLS-II, a new 4 GeV CW superconducting (SCRF) Linac as a major upgrade of the existing LCLS. The LCLS-II Low-Level Radio Frequency (LLRF) collaboration is a multi-lab effort within the Department of Energy (DOE) accelerator complex. The necessity of high longitudinal beam stability of LCLS-II imposes tight amplitude and phase stability requirements on the LLRF system (up to 0.01% in amplitude and 0.01° in phase RMS). This is the first time such requirements are expected of superconducting cavities operating in continuous-wave (CW) mode. Initial measurements on the Cryomodule test stands at partner labs have shown that the early production units are able to meet the extrapolated hardware requirements to achieve such levels of performance. A large effort is currently underway for system integration, Experimental Physics and Industrial Control System (EPICS) controls, transfer of knowledge from the partner labs to SLAC and the production and testing of 76 racks of LLRF equipment.
 
slides icon Slides THYGBE3 [14.389 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2018-THYGBE3  
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THPAK049 Simulation Code Design for the Interpreted Language Using the Compiled Module simulation, interface, linac, lattice 3327
 
  • K. Fukushima, M.A. Davidsaver, Z.Q. He, M. Ikegami, G. Shen, T. Yoshimoto, T. Zhang
    FRIB, East Lansing, USA
  • J. Qiang
    LBNL, Berkeley, California, USA
 
  Funding: Work supported by the U.S. Department of Energy Office of Science under Cooperative Agreement DESC0000661.
We are planning to use two types of the accelerator simulation codes for FRIB (Facility for Rare Isotope Beams). One is the linear envelope tracking code "FLAME" for fast simulations. FLAME can calculate the FRIB-linac beam envelope within an order of ms. This is useful in systematic surveys, wide range optimizations and so forth. This code, written in C++, was designed with Python interface from the beginning. On the other hand, "Advanced-IMPACT" is the particle tracking code dedicated for precise and realistic calculations, which can simulate the particle losses, nonlinear and space-charge effects. This code is refactored from the Fortran code IMPACT-Z developed in LBNL. Both codes provide the compiled modules for Python to support flexible inputs and direct outputs management in memory. In other words, they can be directly connected to the modern scientific tools through the Python interface without delay in the data transport. In addition, these modules can accomplish the interactive simulation processes without losing computational efficiency. We report the knowledges applicable for other accelerator simulation codes among those obtained through these developments and designs.
 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2018-THPAK049  
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THPMF045 Synchronized Beam Position Measurement for SuperKEKB Injector Linac linac, controls, electron, operation 4159
 
  • M. Satoh, F. Miyahara, T. Suwada
    KEK, Ibaraki, Japan
  • T. Kudou, S. Kusano
    Mitsubishi Electric System & Service Co., Ltd, Tsukuba, Japan
  • T. Ohfusa, H.S. Saotome, M. Takagi
    Kanto Information Service (KIS), Accelerator Group, Ibaraki, Japan
 
  Toward SuperKEKB project, the injector linac upgrade is ongoing for aiming at the stable beam operation with low emittance and high intensity bunch charge. One of the key challenges is a low emittance preservation of electron beam because the vertical emittance of 20 mm.mrad or less should be transported to the main ring without a damping ring. For this purpose, the fine alignment of accelerator components is a crucial issue since the linac alignment was badly damaged by the big earthquake in 2011. From the simulation results of emittance growth, the alignment of the quadrupole magnets and accelerating structures should be conducted at the level of 300 um in rms along the 600-m-long linac. In addition, we are aiming at the level of 100 um alignment in rms within the short range distance of 100 m long. Even after the fine component alignment can be achieved, the fine beam orbit manipulation is necessary for low emittance preservation. For these reasons, we have developed the new BPM readout system based on VME64x. The new system has improved the precision of beam position measurement up to 3 um from 25 um. We will describe the software development of the new BPM readout system.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2018-THPMF045  
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THPML060 Virtual VELA-CLARA: The Development of a Virtual Accelerator simulation, controls, lattice, software 4773
 
  • T.J. Price, H.M. Castaneda Cortes, D.J. Dunning, J.K. Jones, B.D. Muratori, D.J. Scott, B.J.A. Shepherd, P.H. Williams
    STFC/DL/ASTeC, Daresbury, Warrington, Cheshire, United Kingdom
  • R.F. Clarke, G. Cox
    STFC/DL, Daresbury, Warrington, Cheshire, United Kingdom
 
  A Virtual Accelerator (VA) has been developed to mimic the accelerators Versatile Electron Linear Accelerator (VELA) and Compact Linear Accelerator for Research and Applications (CLARA). Its purpose is to test control room applications, run start-to-end simulations with multiple simulation codes, accurately reproduce measured beam properties, conduct 'virtual experiments'and gain insight into ‘hidden beam parameters'. This paper gives an overview into the current progress in constructing this VA, detailing the areas of: developing a 'Virtual EPICS' control system, using multiple simulation codes (both particle tracking and analytic), the development of a ‘Master Lattice' and the construction of a Python interface in which to run the VA.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2018-THPML060  
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THPML071 Upgrade of Digital BPM Processor at DCLS and SXFEL FEL, cavity, software, FPGA 4807
 
  • L.W. Lai, F.Z. Chen, Y.B. Leng, T. Wu, Y.B. Yan
    SSRF, Shanghai, People's Republic of China
  • J. Chen
    SINAP, Shanghai, People's Republic of China
 
  A digital BPM processor has been developed at 2016 in SINAP for DCLS and SXFEL, which are FEL facilities built in China. The stripline BPM and cavity BPM processors share the same hardware platform and firmware, but the processing algorithms implemented in EPICS IOC on the ARM CPU are different. The capability of the ARM limits the processing speed to 10 bunches per second. Now the bunch rate of DCLS and SXFEL are going to increase from 10Hz to 50Hz. To meet the higher processing speed requirements, the processor firmware and software are upgraded in 2017. All BPM signal processing algorithms are implemented in FPGA, and EPICS IOC reads results only. After the upgrade, the processing speed reach 120 bunches per second. And this is also a good preparation for future Shanghai Hard-X ray FEL, which bunch rate is about 1MHz.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2018-THPML071  
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THPML108 Distributed I/O System Based on Ethernet POWERLINK Under the EPICS Architecture Ethernet, distributed, FPGA, network 4917
 
  • X.K. Sun, G. Liu, Y. Song
    USTC/NSRL, Hefei, Anhui, People's Republic of China
 
  Ethernet POWERLINK (EPL) is a communication profile for Real-Time Ethernet. The communication profile meets real-time demands for the distributed system composed of multiple controllers. EPICS is a wildly used distributed control system in large scientific facilities. We design a distributed IO system based on EPL under the EPICS architecture and establish the prototype system composed of a PC and six FPGA boards. In this system, an EPICS driver based on openPOWERLINK is developed to monitor the system status. In this paper, the communication mechanism of EPL, the design of system architecture, the implementation of EPICS driver and the test results of prototype system will be described.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2018-THPML108  
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THPML109 Control System Design for Front End Devices of IRFEL controls, FEL, power-supply, interface 4920
 
  • S. Xu, G. Liu, Y. Song, X.K. Sun
    USTC/NSRL, Hefei, Anhui, People's Republic of China
 
  An Infrared Free Electron Laser Light (IRFEL) is being constructed at National Synchrotron Radiation Laboratory. IRFEL consists of e-gun, accelerating tube, microwave, klystron, power supply, vacuum, resonator, undulator, beam diagnosis, cooling water and other devices. The development of the control system for the front end devices of IRFEL is based on EPICS. This paper will introduce the hardware system design, Input Output Controller application, Operation Interface, data archiving and retrieval.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2018-THPML109  
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THPML110 EPICS Driver for Siemens CP1616 Communication Module real-time, controls, network, hardware 4923
 
  • Z. Huang, G. Liu, Y. Song, X.K. Sun
    USTC/NSRL, Hefei, Anhui, People's Republic of China
 
  Funding: Work supported by National Natural Science Foundation of China (11375186)
Siemens communication module CP1616 is a high-performance PROFINET controller, which can support both Real-time (RT) and Isochronous Real-Time (IRT) communication. Experimental Physics and Industrial Control System (EPICS) is a wildly used distributed control system in large scientific devices. In order to integrate PROFINET protocol into EPICS environment, we developed this driver based on CP1616 and established the prototype system. This paper will describe the design of EPICS driver for CP1616 and the test result of the prototype system.
 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2018-THPML110  
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