Log entry time 08:04:25 on October 13, 2010

Entry number 334600

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

• 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

• 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