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Stanford Linear Accelerator Center Ron Chestnut EPICS Collaboration Mtg June 18-20, 20031 SLAC Tune Tracker/Feedback Mike Laznovsky.

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Presentation on theme: "Stanford Linear Accelerator Center Ron Chestnut EPICS Collaboration Mtg June 18-20, 20031 SLAC Tune Tracker/Feedback Mike Laznovsky."— Presentation transcript:

1 Stanford Linear Accelerator Center Ron Chestnut EPICS Collaboration Mtg June 18-20, 20031 SLAC Tune Tracker/Feedback Mike Laznovsky

2 Ron ChestnutEPICS Collaboration Mtg June 18-20, 20032 Requirements Track tune per plane and per ring Move “multiknob” to maintain tune Switch ranges while tracking Constant tune or current dependent tune modes

3 Ron ChestnutEPICS Collaboration Mtg June 18-20, 20033 Tune Space

4 Ron ChestnutEPICS Collaboration Mtg June 18-20, 20034 Hardware GPIB–driven SR830 lock-in amplifier Tweaks the beam, watches response Works best on non-colliding bunches Phase response is almost linear in region of interest Four devices – (LER,HER) * (X,Y)

5 Ron ChestnutEPICS Collaboration Mtg June 18-20, 20035 S/W Implementation All IOC support is “soft” or GPIB Fairly flat database Three sequence programs per device — Amplitude Control — Tracking code — Feedback code One sequence program for VMS synchronization

6 Ron ChestnutEPICS Collaboration Mtg June 18-20, 20036 General H/W control

7 Ron ChestnutEPICS Collaboration Mtg June 18-20, 20037 Tune Scan Panel

8 Ron ChestnutEPICS Collaboration Mtg June 18-20, 20038 PEP-II Tune Scan

9 Ron ChestnutEPICS Collaboration Mtg June 18-20, 20039 Tracker panel

10 Ron ChestnutEPICS Collaboration Mtg June 18-20, 200310 Feedback Panel

11 Ron ChestnutEPICS Collaboration Mtg June 18-20, 200311 Some Results

12 Ron ChestnutEPICS Collaboration Mtg June 18-20, 200312 SLAC status – an aside LCLS — demonstrate injector by 10/2006 — modify SLC timing to accommodate LCLS — SPPS now working (ANL Undulator) VXI PPC (Kinetics) has worked in production — Supports 4 new PEP Low Level RF boards Stephanie from ESD to SPEAR Unix infrastructure work – Versioning, Deployment, Escalation

13 Ron ChestnutEPICS Collaboration Mtg June 18-20, 200313 More SLAC status 8-Pack (NLC Test Accelerator) software in commissioning Oracle Archiver — Scalar PV access is about 2x slower than file- based access — Waveform access is very slow — Changing waveform storage to VARRAY — Matlab Channel Archiver access (Uses libIO, works with traditional files too)


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