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User name Boeglin
Log entry time 16:04:37 on June 6,2010
Entry number 324893
keyword=Shift Summary
Do Harp scan: beam should be 150 < sigma < 250
Start long recovery
9:00 MCC called, they can deliver some beam but they have to replace a piece if interlock electronics which will take another access.
9:20 got beam into the Hall: Harp Scan: 254 x 201 microns
9:50 checked beam size and position with BeO and Pb #3
observed a really low rate on Pb
9:55 work continues at Accelecrator to replace electronics
10:30 set laser att. to 55 with slit 17
took spot_L & spot_R on BeO
move to Pb #3: do spot_L & spot_R, looked OK -> ramp up to 50uA
10:55 after many beam trips MCC informed that they get injector BLM trips above 45uA -> running at 40uA
encountered some problems with DAQ
first production runs : 4335. Some cuts need to be adjusted in order
for the online analysis to work. We can run at the moment with 40-42uA only
4336 should be a good run at 40uA
try 46uA
4337 HV trip: compton and left arm detectors ended run
4338 restored HV run at 42uA
14:05 MCC called top get 1/2 hour of beam to work on the BLM trip problem in order ot be anble to get 50uA -> ended run
2:30 got beam back at 50uA start new run (while ramping)
2:27 started run 4339
3:20 start run 4340 first run with constant 50uA
3:45 Right Q1 trip, no obvious reason, reset it. did NOT stop run 4340