• Main INDEX
  • Monthly INDEX
  • PREV
  • NEXT

    User name Solvignon

    Log entry time 08:06:01 on April24,2003

    Entry number 98406

    keyword=Shift checklist

    3:15am --> controlled access to insert the collimators

    Radiation survey found very high radiation closed to the target so paged Radcon.

    3:40am --> radiation went down so collimators can be inserted

    3:55am --> moved the target to single 12C foil position

    4:09am --> beam back


    4:15am --> Right spectrometer momentum at 1.1932 GeV and septum at 119A
    changed prescale ps1 from 3 to 1, asked for 5uA, raster off: rate=1.4kHz.

    run# 1260: from 4:27am to 4:38am (1M events)


    4:38am --> changed momentum setting: 1.1473 GeV and septum at 114.5A.

    run# 1261: junk (dipole still changing).
    run# 1262: rate too high (7kHz).

    Asked 1uA.

    run# 1263: rate still too high (4kHz) so changed ps1 from 1 to 2
    run# 1264: from 5:00am to 5:09am (1M events)


    5:10am --> changed momentum setting: 1.1014 GeV and septum at 109.5A.

    Changed prescale factor ps1 from 2 to 4.

    run# 1265: from 5:23am to 5:34am (1M events)


    5:36am --> start of momentum change to 0.5 GeV. Moved target to pick-up coils position

    Septum at 50.0A.

    5:45am: NMR with gradient coil C on at 2.877A (we didn't see that the gradient coil was already on). NMR = 7.5 mV

    6:05am: NMR with gradient coil C at 1.221A. NMR= 6.87 mV

    6:19am: moved target to single 12C foil position.

    6:42am: right dipole momentum set, ask 1uA beam raster off.
    Change prescale factor from 4 to 1. (rate is 2kHz)

    run# 1266: from 6:47am to 6:56am (1M events)

    Ask raster on

    run# 1267: from 6:58am to 7:01am --> BPM position are off and not stable.

    Wait for BPM positions to be at 0.

    run# 1268: from 7:21am to 7:29am (1M events)


    7:30am: moved target to reference cell position.

    Changed prescale factor ps1 from 1 to 4

    run# 1269: from 7:37am to 7:44am --> run stopped because septum is warming up.

    7:55am: MCC wants to do a QE measurement.