WEC —  Contributed Oral: Control System   (17-Oct-18   10:40—11:55)
Chair: W. Mexner, KIT, Karlsruhe, Germany
Paper Title Page
WEC1 The Do's and Don'ts in Process Controls - Lessons Learned Over 35 Years -1
  • M.R. Clausen, T. Boeckmann, J. Hatje, O. Korth, M. Möller, J. Penning, H.R. Rickens, B. Schoeneburg
    DESY, Hamburg, Germany
  Designing, implementing and maintaining process control systems for cryogenic plants requires different viewpoints compared with those in machine controls. 24/7 operations for more than a year is a basic requirement. Hardware and software must be designed to fulfill this requirement. Many projects are carried out with industrial partners. Companies specify the process control logic which gets implemented by the local DESY team. Responsibilities, time tables and milestones must be clearly defined in such a case. Several cryogenic installations have been equipped with state of the art process control systems for cryogenic controls. Where the last one being the European XFEL. In the course of time commercial and open source systems were implemented and maintained. Control loops were basically always implemented in front end controllers running the real-time operating system VxWorks and EPICS as the control system toolkit. The approach to use PLCs will be discussed as an alternative approach. Large installations like the European XFEL require good project planning. Our success story will finalize our look back and initiate our look forward.  
WEC2 Status of the TPS Control System -1
  • 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) has been delivered in mid-2014 to support commissioning and routine operation of the accelerator system. The TPS control system adopts EPICS toolkits as its frameworks. Various subsystems interface to the control system according its specific requirements. Operation experiences accumulated during last four years confirmed the system working well. Minor revisions were made to improve the system performance. Current status of the control system and ongoing developments will be summarized in the report.  
WEC3 Overview and Status of the SHINE Control System -1
  • Y.B. Yan, G.H. Chen, J.F. Chen, J.G. Ding, Y.B. Leng
    SSRF, Shanghai, People's Republic of China
  • Y.J. Liu, H.H. Lv, Q.R. Mi, H.F. Miao, H.Y. Wang, C.L. Yu, P.X. Yu, H. Zhao
    SINAP, Shanghai, People's Republic of China
  The high-gain free electron lasers have given scientists hopes for new scientific discoveries in many frontier research areas. The Shanghai HIgh repetition rate XFEL aNd Extreme light facility (SHINE) was proposed by the central government of P.R. China on April 2017, which is a quasi-continuous wave hard X-ray free electron laser facility. The control system is responsible for the facility-wide device control, data acquisition, machine protection, high level database or application, as well as network and computing platform. It will be mainly based on EPICS to reach the balance between the high performance and costs of maintenance. The latest technology will be adopted for the high repetition rate data acquisition and feedback system. The details of the control system design will be reported in this paper.  
slides icon Slides WEC3 [7.247 MB]  
WEC4 HEPS Controls Status Update -1
  • C.P. Chu, D.P. Jin, G. Lei, C.H. Wang, L.X. Zhu
    IHEP, Beijing, People's Republic of China
  The High Energy Photon Source (HEPS) is a planned extremely low emittance synchrotron radiation based light source located in suburban Beijing which requires high precession control systems for both accelerator and beamline controls. This paper outlines the overall design for control systems, including equipment control, fast orbit feedback, machine protection, controls network, database, high-level application architecture, and physics applications. Early plans for beamline controls are also reported.  
WEC5 !CHAOS General Status Report -1
  • A. Stecchi, C. Bisegni, P. Ciuffetti, A. D'Uffizi, A. De Santis, G. Di Pirro, F. Galletti, R. Gargana, A. Michelottipresenter, M. Pistoni, D. Spigone
    INFN/LNF, Frascati (Roma), Italy
  • L. Catani
    INFN - Roma Tor Vergata, Roma, Italy
  !CHAOS* (Control system based on Highly Abstracted and Open Structure) is now mature and is being employed in real operational contexts. A dedicated infrastructure, recently installed at the LNF Computer Centre, houses the framework and provides control services to different LNF installations. The !CHAOS native capability of fast storage, based on the use of a non-relational database, has been finalized and tested with applications demanding high bandwidth. Thanks to its scalable design, the fast storage allows to accommodate multiple sources with sub-millisecond timing. The EU (Execution Unit) node has also been delivered and turned out to be a "Swiss Army knife" for processing both live and stored data, inserting feedbacks and in general for correlating data acquired by the CU (Control Units) nodes. A key feature of the EU is a plugin mechanism that allows to easily integrate different programming and scripting languages such as LUA, C++, Python, also exploiting the ROOT framework, the well-known scientific tool from CERN. A comprehensive description of the !CHAOS evolution, of its performances and of its use, both in scientific and industrial contexts, is presented.
* L. Catani et al, Phys. Rev. ST Accel. Beams 15, 112804 (2012). Introducing a New Paradigm for Accelerators and Large Experimental Apparatus Control Systems.