Process equipment data organisation in CERN PS controls

Casalegno, L.; Cuperus, J.; Sicard, C.H.

doi:10.1016/0168-9002(90)91472-n

Cited by 2 publications

(1 citation statement)

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“…The interface between the synchronized front-end layer and the non-synchronized user- † See Appendix in Section VII interface is generally implemented by accessing structured shared memory segments inside the front-end computers from both sides, generally referred to as 'data-tables'. The structure of the data-tables for all VME crates is managed by a central database [3], which generates object-orientated EquipmentModules (EM) [4], [5]. A given EM, when installed in a frontend computer, implements a specific data-table structure and an accessing mechanism from the application-layer, using Remote Procedure Calls (RPC).…”

Section: Introductionmentioning

confidence: 99%

Software for beam diagnostics front-end systems: synchronization and implementation issues

Ludwig

Chohan

1999 IEEE Conference on Real-Time Computer Applications in Nuclear Particle and Plasma Physics. 11th IEEE NPSS Real Time Confer

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Front-end software systems used for beam dia gnostics at CERN's PS accelerator complex perform control and data acquisition of local hardwa re components in synchroniza tion with specific accelerator events. The principal pa rt of the software is genera lly hosted in a VME crea te, which drives a ll system components, provides intera ctivity with the general controls environment through networking a nd decouples the networking layer from the machine layer. Using three real-world examples of operational instrumentation systems, na mely the beam intensity measurement between the PS-Booster and the PS, the AD Coherent Oscillations measurement a nd the PS Closed-Orbit Synchroniz ation, the paper describes their synchronization to accelerator events and states. Sometimes these instrumenta tion systems a re subject to complex real-time constraints and externa l conditions. The stra tegies to meet these requirements in the rea l-time software are discussed in the context of the general design and implementation in the PS control system environment. CERN/PS AbstractFront-end software systems used for beam diagnostics at CERN's PS † accelerator complex perform control and data acquisition of local hardware components in synchronization with specific accelerator events. The principal part of the software is generally hosted in a VME create, which drives all system components, provides interactivity with the general controls environment through networking and de-couples the networking layer from the machine layer. Using three realworld examples of operational instrumentation systems, namely the beam intensity measurement between the PSBooster † and the PS, the AD † Coherent Oscillations measurement and the PS Closed-Orbit Synchronization, the paper describes their synchronization to accelerator events and states. Sometimes these instrumentation systems are subject to complex real-time constraints and external conditions. The strategies to meet these requirements in the real-time software are discussed in the context of the general design and implementation in the PS control system environment.

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Section: Introductionmentioning

confidence: 99%