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EPICS at the Protein Crystallography Beamlines of the SLS

EPICS at the Protein Crystallography Beamlines of the SLS. The Beamlines PX and PXII. PX – in User Operation (since 2001) EPICS 3.13.2 PX II – under Construction (Operation start 1/2005) EPICS 3.13.9. Beamline Schematic. Experimental Station:

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EPICS at the Protein Crystallography Beamlines of the SLS

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  1. EPICS at the Protein Crystallography Beamlines of the SLS

  2. The Beamlines PX and PXII PX – in User Operation (since 2001) EPICS 3.13.2 PX II – under Construction (Operation start 1/2005) EPICS 3.13.9

  3. Beamline Schematic • Experimental • Station: • Detectors • Sample Mount • Microscope • Beam Conditioning: • Monochromator • Mirror • Slits • X-BPMs • Filters

  4. Using EPICS for Beamlines? • What is the difference between an accelerator and a beamline? • different hardware (motors …) • experiment stations change frequently • beamline users are less experienced in controls • beamlines are smaller • more beamlines and all different

  5. Using EPICS for Protein Crystallography Beamlines! • users change only crystals, not experiments • hardware is already supported • there are many Protein Crystallography beamlines • BUT: • need VERY easy to use software

  6. How to use EPICS at Beamlines? • mono-layer PVs between hardware and • high level software • + quick and easy to implement • - every program has to do calculations itself • - programs may be started twice .... • 2.complex structure of PVs and SNL programs • + calculations done centrally • + central functions prevent dual starts • - not so quick and easy to implement • - you need documentation to understand it next year

  7. Problems and Challenges at Real Beamlines • VERY tight schedule – „no“ time at the beamlines • demand of high reliability • permanent upgrades of hardware • GUIs have to be fail save (inexperienced users)

  8. EPICS 3.14 Beamline Simulation • simulate the hardware on an office pc • (all time available, no problems with • cabling and adjustment) • use an EPICS 3.14.x IOC • (reboot in 3 seconds) • use the same configuration files • (templates and substitution files) • some additional work for correct • reactions

  9. Future Prospects of the simulation • simulate the experiment • simulate the beam for the whole beamline • status simulation of error states • use simulation for operator training • expand simulation to other beamlines

  10. Summary • EPICS is a good choice for PX beamlines • on the way to a complex but „standardised“ • EPICS database • use a simulation to develop, test and debug • database • (many thanks for developing 3.14!)

  11. The End.

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