Keyword: PLC
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TUPAB314 SPS Personnel Protection System: From Design to Commissioning site, controls, operation, MMI 2224
 
  • T. Ladzinski, T. Hakulinen, F. Havart, V. Martins De Sousa Dos Rios, M. Munoz Codoceo, P. Ninin, J.P. Ridewood, E. Sanchez-Corral Mena, D. Vaxelaire
    CERN, Meyrin, Switzerland
 
  During the second long shutdown (LS2) of the accelerator complex at CERN, the access system of the Super Proton Synchrotron (SPS) was completely renovated. This complex project was motivated by the technical obsolescence and lack of sufficient redundancy in the existing system, as well as by the need for homogenisation of technologies and practices across the different machines at CERN. The new Personnel Protection System includes 16 state-of-the-art access points making sure that only fully identified, trained and authorised personnel can enter the facility and an interlock system with a rationalized number of safety chains designed to meet the current safety standards. The control part is based on Siemens 1500 series of programmable logic controllers, complemented by a technologically diverse relay logic loop for the critical safety functions. This paper presents the new system and the design choices made to permit fast installation in a period where the access system itself was heavily used to allow vast upgrades of the SPS accelerator and its infrastructure. It also covers the verification and validation methodology and lessons learned during the commissioning phase.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-TUPAB314  
About • paper received ※ 14 May 2021       paper accepted ※ 10 June 2021       issue date ※ 22 August 2021  
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TUPAB319 SNS Credited Beam Power Limit System Preliminary Design timing, target, controls, dipole 2242
 
  • C. Deibele
    ORNL, Oak Ridge, Tennessee, USA
  • K.L. Mahoney
    ORNL RAD, Oak Ridge, Tennessee, USA
 
  The Controls Group at the Spallation Neutron Source (SNS) is designing a programmable signal processor based credited safety control that calculates pulsed beam power based on beam kinetic energy and charge. The system must reliably shut off the beam if the average power exceeds 2.145 MW averaged over 60 seconds. This paper discusses architecture and design choices needed to develop the system under the auspices of a programmable radiation-safety credit control.  
poster icon Poster TUPAB319 [1.925 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-TUPAB319  
About • paper received ※ 16 May 2021       paper accepted ※ 02 July 2021       issue date ※ 25 August 2021  
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TUPAB322 Redesign and Upgrade of the LHC Access Control System controls, site, interface, hardware 2249
 
  • T. Hakulinen, S. Di Luca, G. Godineau, R. Nunes, G. Smith
    CERN, Meyrin, Switzerland
 
  The old LHC Access Control System (LACS) was based on a single access control solution, which integrated software and hardware into one monolithic application encompassing all the different subsystems (access control, video surveillance, interphones, biometry, equipment control, safety elements). Both the hardware and software were approaching end-of-life by the vendor before the CERN Long Shutdown 2 (LS2). The new design is based on a distributed approach, where the different subsystems are integrated in a flexible manner with well-defined interfaces, which will permit much easier single sub-system management, upgrades, and even full replacements if necessary. From the system point of view, the focus is on the advantages that this redesign brings to system operation, testing, and management. Procedurally the interest is in the overall management of a very complex in-place upgrade of a system, where the new implementation needed to coexist with the old during its constant simultaneous solicitation over the LS2.  
poster icon Poster TUPAB322 [6.906 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-TUPAB322  
About • paper received ※ 15 May 2021       paper accepted ※ 28 May 2021       issue date ※ 28 August 2021  
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TUPAB353 Remote Commissioning of 400 kW 352 MHz Amplifiers controls, power-supply, real-time, MMI 2332
 
  • C. Pasotti, A. Cuttin, A. Fabris
    Elettra-Sincrotrone Trieste S.C.p.A., Basovizza, Italy
  • A. Frizzi, G. Zardi
    Itelco Broadcast Srl, Orvieto (TR), Italy
  • M. Rossi
    DB Science, Padova, Italy
 
  In the framework of the European Spallation Source ERIC (ESS ERIC) In-Kind collaboration, Elettra Sincrotrone Trieste has the task to deliver 26 400 kW 352 MHz Radio Frequency Power Station (RFPS) units. They will feed the Spoke Cavities section of the proton Linac. The RFPS manufacturing contract has been awarded to the European Science Solutions consortium (ESS-C) gained the. The production of the amplifiers is well underway and it has reached a steady rate of delivery. Each RFPS is subject to a Factory Acceptance Test (FAT). In this contribution, the main results of the FATs are presented, together with the FAT remote session protocol. This protocol has been specifically developed to cope with the traveling and in persons meeting restrictions imposed by the COVID-19 pandemic.  
poster icon Poster TUPAB353 [2.675 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-TUPAB353  
About • paper received ※ 17 May 2021       paper accepted ※ 23 June 2021       issue date ※ 17 August 2021  
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TUPAB354 352-MHz Solid State RF System Development at the Advanced Photon Source cavity, GUI, controls, klystron 2335
 
  • D. Horan, D.J. Bromberek, N.P. DiMonte, A. Goel, T.J. Madden, A. Nassiri, G. Trento, G.J. Waldschmidt
    ANL, Lemont, Illinois, USA
 
  Development effort is underway on a 352MHz, 200kW solid state rf system intended as the base design to replace the existing klystron-based rf systems presently in use at the Advanced Photon Source (APS). A sixteen-input, 200kW final combining cavity was designed, built, and successfully tested to 29kW CW in combiner mode, and to 200kW CW in back-feed mode, where an external klystron was used to transmit power into the combining cavity. A four-port waveguide combiner was also tested in both backfeed and combiner mode to 193kW and 26kW respectively. Slow and fast interlock systems were designed and implemented to support the testing process. An EPICS and Programmable Logic Controller (PLC)-based system was developed to control, communicate with, and monitor the rf amplifiers used in the combiner-mode test, and to monitor and log system performance parameters relating to the combining cavity. Low-level rf control of the cavity in 29kW combiner-mode operation was achieved using the existing APS analog low-level rf hardware. Test data and design details are presented.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-TUPAB354  
About • paper received ※ 18 May 2021       paper accepted ※ 31 May 2021       issue date ※ 19 August 2021  
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WEPAB394 Development of a New Interlock and Data Acquisition for the RF System at High Energy Photon Source controls, EPICS, cavity, FPGA 3630
 
  • Z.W. Deng, J.P. Dai, H.Y. Lin, Q.Y. Wang, P. Zhang
    IHEP, Beijing, People’s Republic of China
 
  Funding: This work was supported by High Energy Photon Source, a major national science and technology infrastructure in China.
A new interlock and data acquisition (DAQ) system is being developed for the RF system at High Energy Photon Source (HEPS) to protect essential devices as well as to locate the fault. Various signals collected and pre-processed by the DAQ system and individual interlock signals from solid-state power amplifiers, low-level RFs, arc detectors, etc. are sent to the interlock system for logic decision to control the RF switch. Programmable logic controllers (PLC) are used to collect slow signals like temperature, water flowrate, etc., while fast acquisition for RF signals is realized by dedicated boards with down-conversion frontend and digital signal processing boards. In order to improve the response time, field programmable gate array (FPGA) has been used for interlock logic implementation with an embedded experimental physics and industrial control system (EPICS). Data storage is managed by using EPICS Archiver Appliance and an operator interface is developed by using Control System Studio (CSS) running on a standalone computer. This paper presents the design and the first test of the new interlock and DAQ for HEPS RF system.
 
poster icon Poster WEPAB394 [2.140 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-WEPAB394  
About • paper received ※ 16 May 2021       paper accepted ※ 14 July 2021       issue date ※ 31 August 2021  
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