Log entry time 08:02:57 on October 13, 2010

Entry number 334599

Crew:
J. Roche
Y. Zhihong
F. Itard
 

Timeline:

• 00:00: start with epics gateway crash, called MCC, epics was restored around 12:15 . We have the sieve slit and carbons optic foils in position. The replay doesn't show the foils... 1:00 Because we have some doubts about the sieve pisition and we need statistic on with sieve out, we decide to remove the sieve. 1:20: carbons foils, no sieve : now we see the foils ! 1:30: Eric asks us to take Compton data. 2:00: taking some runs with S0 in the trigger for scintilator timing checkout. 2:36: Putting the sieve back in position with carbon foils. This is just to check that we still cannot make up the foils. We still cannot of course. I had had some doubts about the sieve slit position. 3:41: MCC wants to do a calibration of their MPS bcm. I did cross check with htem that this is not the full BCM calibration that we are waiting for since a while. 5:15: changing target to LH2 15cm, turning off the raster, sive is in position. DAQ rate=22 Hz. 6:56: MCC takes the beam away for a QE measurement 6:58: beam is back  

  Run list:

  • 7230: sieve slit on, multifoil carbon, 50 uA, pnom=3.327, angle=27.494, 135k evt
  • 7231: sieve slit on, multifoil carbon, 50 uA, pnom=3.327, angle=27.494, 96k evt
  Sieve out
  • 7232: sieve slit OUT, multifoil carbon, 50 uA, pnom=3.327, angle=27.494, 200k evt
  • 7233, 7234: junk, playing out with prescale.
  • 7235: sieve slit OUT, multifoil carbon, 50 uA, pnom=3.327, angle=27.494, 200k evt, s0 in the trigger ps2=25
  • 7236: sieve slit OUT, multifoil carbon, 50 uA, pnom=3.327, angle=27.494, 200k evt, s0 in the trigger ps2=50
  Sieve in
  • 7237: sieve slit in, multifoil carbon, 50 uA, pnom=3.327, angle=27.494, 200k evt,
  • 7238: sieve slit in, LH2, 4.5 uA, pnom=3.327, angle=27.494
  • 7239: sieve slit in, LH2, 4.5 uA, pnom=3.327, angle=27.494