Log entry time 16:05:04 on March 11, 2012

Entry number 365722

Day Shift Summary

Shift Crew:
SL: Melissa Cummings
TO: Ryan Duve
3rd: Garrett Josemans


08:00 Start of shift, still taking GEp production data.
08:45 Stop beam so target experts can do a target anneal
09:00 Called for controlled access for target anneal.
10:20 Target anneal is complete, hall is back in beam permit.  Waiting
for the target fridge to fill with helium
10:45 Polarizing the top cup of the target 
11:15 Beam is back, resuming with GEp production
11:30 Beam is stopped.  MCC says the A2 interception is high and they
need to do some steering at the injector to adjust.  
11:40 Beam is back, resuming production.
12:15 Polarization lost on target due to 0.5A loss in magnet current. 
Magnet was ramped back up and polarization recovered. 
12:20 Asked MCC for bleedthrough check.  Their test indicated no
bleedthrough current but Hall A 1H00 BCM still reads 2-3nA, even when
beam is off to halls B&C.  
12:40 Resume production
04:00 Smooth data taking for the past 3.5 hours, plan is to continue
taking GEp production data.


Runs Taken: (LHRS/RHRS/TA)

3084/22172/40310: Production (IHWP OUT), 3rd arm run now has correct
prescales.
3085/22173      : Production (IHWP OUT), beam stopped part way through
the run
3086/22174/40311: Production (IHWP OUT), beam trip partway through run
3087/22175/40316: Production (IHWP OUT), ROC 26 rebooted on the RHRS
during 22175, beam trip during run 3087
3088/22177/40318: Production (IHWP OUT), beam trip partway through
3089/22178      : Production (IHWP OUT)
3090/22179/40319: Production (IHWP OUT)
3091/22180/40320: Production (IHWP OUT)
3092/22181/40321: Production (IHWP OUT)


note: Runs 3085-3089, 22173-22178, 40311-40318 have the wrong label for
target type: should be NH3 TOP