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Dirk Zimoch, EPICS Collaboration Meeting, Vancouver 2009 PSI-XFEL Challenges and Developments.

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Presentation on theme: "Dirk Zimoch, EPICS Collaboration Meeting, Vancouver 2009 PSI-XFEL Challenges and Developments."— Presentation transcript:

1 Dirk Zimoch, EPICS Collaboration Meeting, Vancouver 2009 PSI-XFEL Challenges and Developments

2 Dirk Zimoch, EPICS Collaboration Meeting, Vancouver 2009 PSI-XFEL XFEL Project Schedule 250 MeV Test Injector until fall 2010 PSI-XFEL construction start spring 2011 Gun Test until summer MeV Test until spring 2009 continued ? ? ■ Have to support 3 machines at the same time! ► Lots of diagnostics ► Frequent modifications

3 Dirk Zimoch, EPICS Collaboration Meeting, Vancouver 2009 PSI-XFEL 250 MeV Injector Construction Site

4 Dirk Zimoch, EPICS Collaboration Meeting, Vancouver 2009 PSI-XFEL Control Room

5 Dirk Zimoch, EPICS Collaboration Meeting, Vancouver 2009 PSI-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: camera servers ■ We expect a factor of 10 for "the real thing"

6 Dirk Zimoch, EPICS Collaboration Meeting, Vancouver 2009 PSI-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?

7 Dirk Zimoch, EPICS Collaboration Meeting, Vancouver 2009 PSI-XFEL backbone network (control room, central IOCs) Network Layout... EPICS non EPICS gunlinac 1linac nundulators beamline 1 beamline n vacuum system PLCs machine interlock system PLCs web cameras VLAN router... Does this make sense? CAGW

8 Dirk Zimoch, EPICS Collaboration Meeting, Vancouver 2009 PSI-XFEL Gateway Reliability ■ Runs stable at SLS ► 16 beamline networks (up to 3000 channels) ► readonly office network gateway (up to 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?


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