Log entry time 00:16:58 on November 28, 2010

Entry number 341728

Crew:
J. Roche (SL/TO)
V. Punjabi (3rd)

Highlights:
Very quiet production on DVCS kine 1-low, hydrogen target.
Half wave plate is now :IN

Timeline:

• 16:15: started shift with no beam due to CHL issues
• 16:20: Hall C request half wave plate IN.
• 16:30: Harp scan, widths are good after correction.
• 16:45: moved to LH2 15 cm, starts run 9035
• 17:48: Compton HV=1750V and Y photon detector position=43 mm. Rates are good: with cavity on: 1600 Hz/uA and with cavity off:400 Hz/uA. Run 24279 and 24280 are junk: used for setup.
• 18:38: Vina see that CODA seems stuck. This happens during run 9036 after 197 k events. She typed "startcoda", choose TrigDVCSNoC configuration and we are back in buisness.
• 23:45: changed epics calibration for the downstream bcm. Interrupted run 9042 to do so.

 Run    Events  BCM U3   D3 (C)    Time         Avg Curr      Deadtime
 9035   296 k   0.00982  0.01080   61.5 mins    2.7922 uA     6.54%
 9036   end of run missing because of coda crash
 9037   299 k   0.00998  0.01100   60.3 mins    2.8997 uA     6.28%
 9038   303 k   0.01028  0.01130   58.5 mins    3.0734 uA     6.49%
 9039   297 k   0.00993  0.01099   58.9 mins    2.9620 uA     6.58%
 9040   306 k   0.01031  0.01137   60.1 mins    3.0076 uA     6.70%
 9041   302 k   0.01013  0.01113   60.4 mins    2.9323 uA     6.19%
 9042    16 k   0.00053  0.00058    3.1 mins    2.9702 uA     9.12%

24281, 24282, 24283, 24285, 24286, 24287, 24288, 24289