epics at the protein crystallography beamlines of the sls
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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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the beamlines px and pxii
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
Beamline Schematic
  • Experimental
  • Station:
  • Detectors
  • Sample Mount
  • Microscope
  • Beam Conditioning:
  • Monochromator
  • Mirror
  • Slits
  • X-BPMs
  • Filters
using epics for beamlines
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
using epics for protein crystallography beamlines
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
how to use epics at beamlines
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
problems and challenges at real beamlines
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)
epics 3 14 beamline simulation
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
future prospects of the simulation
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
summary
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!)
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