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hadron

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WECOAA03 FESA3 – The New Front-End Software Framework at CERN and the FAIR Facility controls, coupling, collider 22
 
  • A. Schwinn, S. Matthies, D. Pfeiffer
    GSI, Darmstadt
  • M. Arruat, L. Fernandez, F. Locci, D. G. Saavedra
    CERN, Geneva
  Currently the LHC* is controlled by the use of FESA** 2.11 classes. FESA3 is not only an update of FESA2.11, but a completely new approach. GSI plans to use the FESA system at the complex FAIR facility. One of the main reasons to introduce FESA3 was to provide a framework which can be shared between different labs. This is accomplished by splitting up the FWK into a common part, which is used by all labs, and a lab-specific part, which allows e.g. a lab dependent implementation of the timing-system. FESA3 is written in C++, runs a narrow interface (RDA***), supports multiplexing of different accelerator-cycles, is completely event driven and uses thread priorities for scheduling. It provides all FESA2.11 functionalities and additionally introduces several new features. FESA3 is integrated in the Eclipse IDE as a plugin. Using this plugin, the user can easily create his FESA-class design (xml file), generate the C++ source code, fill the device-specific methods, and deploy the binary on a front end. As well as the framework the Eclipse plugin has a lab specific implementation. An operational release for FESA3 is planned end of 2010.

* LHC = The (L)arge (H)adron (C)ollider, located at CERN/Switzerland
** FESA = (F)ront(E)nd (S)oftware (A)rchitecture
*** RDA = (R)emote (D)evice (A)ccess a middleware, which encapsulates Corba

 
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WEPL025 Control and Timing System Design of CPHS Project controls, linac, target, monitoring 79
 
  • Q. Du, H. Gong, X. Guan, J. M. Li, J. Wei
    TUB, Beijing
  • B. B. Shao
    Tsinghua University, Beijing
  The control system consists of a timing and event distribution system, an EPICS based distributed run-time database and control system, and a comprehensive personnel and machine protection system. The timing and event distribution system defines the global system time frame as well as specific events that trigger local devices by an event generator and receiver framework, so that the time delay of each event could be controlled in 10ns resolution, and the timing jitter of trigger signal is below 0.1ns. The hard-real-time machine protection system is also integrated in the event system so that a fault event could be responded within 50 micro-seconds. Field control signals such as water temperature, vacuum, low level RF phase and amplitude and radiation dose are monitored and controlled via the EPICS database through Ethernet.  
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