dorsal/arxiv
View SchemaTiming system of the Swiss Light Source
| Authors | Timo Korhonen, Martin Heiniger |
|---|---|
| Categories | |
| ArXiv ID | physics/0111173 |
| URL | https://arxiv.org/abs/physics/0111173 |
| Journal | eConf C011127 (2001) FRAT004 |
Abstract
The timing system of the Swiss Light Source is based on the event system concept of APS, Argonne [1]. However, for SLS the hardware was completely redesigned while preserving the software compatibility with the APS system. This gave us a head start in the implementation: we could use the latest available hardware and take advantage of the features integrated in the EPICS software. The event system is used as the sole timing distribution method, for hardware trigger delivery (assisted with a high-precision delay at a few places) and for controlling all the timing-related tasks of operation: injector sequencing, filling patterns, software synchronization, timestamps and so on. The event network is also extended to the beamlines to allow synchronization of the beamline experiments. The implementation consists of the hardware (Gigabit Ethernet link, FPGAs) and a firmware core written in VHDL. The functionality of the cards can be modified in situ by rewriting the firmware in flash memory. On the other hand, the functionality can be easily ported to new hardware architectures, allowing smooth upgrade paths and maximal reusability of the soft- and hardware resources. [1] F.R.Lenkszus et.al., 'The Advanced Photon Source Event System', Proc. ICALEPCS'95
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"abstract": "The timing system of the Swiss Light Source is based on the event system\nconcept of APS, Argonne [1]. However, for SLS the hardware was completely\nredesigned while preserving the software compatibility with the APS system.\nThis gave us a head start in the implementation: we could use the latest\navailable hardware and take advantage of the features integrated in the EPICS\nsoftware. The event system is used as the sole timing distribution method, for\nhardware trigger delivery (assisted with a high-precision delay at a few\nplaces) and for controlling all the timing-related tasks of operation: injector\nsequencing, filling patterns, software synchronization, timestamps and so on.\nThe event network is also extended to the beamlines to allow synchronization of\nthe beamline experiments. The implementation consists of the hardware (Gigabit\nEthernet link, FPGAs) and a firmware core written in VHDL. The functionality of\nthe cards can be modified in situ by rewriting the firmware in flash memory. On\nthe other hand, the functionality can be easily ported to new hardware\narchitectures, allowing smooth upgrade paths and maximal reusability of the\nsoft- and hardware resources.\n [1] F.R.Lenkszus et.al., \u0027The Advanced Photon Source Event System\u0027, Proc.\nICALEPCS\u002795",
"arxiv_id": "physics/0111173",
"authors": [
"Timo Korhonen",
"Martin Heiniger"
],
"categories": [
"physics.acc-ph"
],
"journal_ref": "eConf C011127 (2001) FRAT004",
"title": "Timing system of the Swiss Light Source",
"url": "https://arxiv.org/abs/physics/0111173"
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