Dirk Zimoch, EPICS Collaboration Meeting, Vancouver 2009 PSI-XFEL Challenges and Developments.
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Dirk Zimoch, EPICS Collaboration Meeting, Vancouver 2009 PSI-XFEL Challenges and Developments
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Transcript of Dirk Zimoch, EPICS Collaboration Meeting, Vancouver 2009 PSI-XFEL Challenges and Developments.
Dirk Zimoch, EPICS Collaboration Meeting, Vancouver 2009
PSI-XFEL
Challenges and Developments
Dirk Zimoch, EPICS Collaboration Meeting, Vancouver 2009
PSI-XFELPSI-XFEL
XFEL Project Schedule
250 MeV Test Injectoruntil fall 2010 PSI-XFEL
construction startspring 2011
Gun Testuntil summer 2008
4 MeV Testuntil spring 2009
continued
continued
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■Have to support 3 machines at the same time!►Lots of diagnostics►Frequent modifications
Dirk Zimoch, EPICS Collaboration Meeting, Vancouver 2009
PSI-XFELPSI-XFEL
250 MeV Injector Construction Site
Dirk Zimoch, EPICS Collaboration Meeting, Vancouver 2009
PSI-XFELPSI-XFEL
Control Room
Dirk Zimoch, EPICS Collaboration Meeting, Vancouver 2009
PSI-XFELPSI-XFEL
250 MeV Injector in Numbers
■ 48 VME IOCs►RF IOCs: 21►Magnet IOCs: 2►Timing IOC: 1►Diagnostics IOCs: 24
■ 15 PC IOCs►Vacuum IOC: 1►Diagnostics IOCs: 4 + 10 camera servers
■We expect a factor of 10 for "the real thing"
Dirk Zimoch, EPICS Collaboration Meeting, Vancouver 2009
PSI-XFELPSI-XFEL
Networking
■ Class A subnets preferred►maintainability issues► fear of broadcast traffic
■ But 500 IOCs do not fit into one subnet■ How to split the network?►By system? (RF, magnets, diagnostics, …)►By sector? (gun, buncher, linac, …)►Where to put the control room?
Dirk Zimoch, EPICS Collaboration Meeting, Vancouver 2009
PSI-XFELPSI-XFEL
backbone network(control room, central IOCs)
Network Layout
...
...
EPICS
non EPICS
gun linac 1 linac n undulatorsbeamline 1
beamline nvacuum system PLCs
machine interlock system PLCs
web cameras
VLA
N r
ou
ter
...
Does this make sense?
CAGW CAGW CAGW CAGWCAGW
CAGW
Dirk Zimoch, EPICS Collaboration Meeting, Vancouver 2009
PSI-XFELPSI-XFEL
Gateway Reliability
■ Runs stable at SLS►16 beamline networks (up to 3000 channels)► readonly office network gateway (up to 40000 channels)
■ Virtual machines (vmWare) on high reliability blade system■ Found problems with waveforms►10 records x 2000 doubles x 10Hz►Waveforms came though but all scalars were dropped►Solution: increase vxWorks TCP queue size! (8k → 64k)► Is the gateway too slow reading waveforms?
