Owl Shift, Tuesday, August 27, 2002 about 00:00 Called MCC to ask when they thought we might get beam. They just laughed. 00:50 There appears to be beam, but it is still not steered in. 01:10 We have 4nA beam with ok steering, starting harp scan electron beammharp scan looks ok 01:40 Taking photon beam harp scans, we have a photon beam 2mm on X and 6mm on Y 02:30 prudoction run #797(luminosity rate test), PSMT prescale 300, MOR prescale 3, 5% carbon primex target, radiator B in, TAC in, no convertor the beam current 80pA lost beam run was ended with 9473341 million events 03:40 production run #799 (luminosity rate test), beam current 10 nA, TAC out. PSMT prescale 15000, MOR prescale 150 run ended with about 10 000 000 events 04:20 production run #800 (luminosity rate test), beam current 50 nA, TAC out PSMT prescale 45000, MOR prescale 450, lost beam for few seconds run was ended with 9865041 events 04:40 Bruno has pionted out that we are filling up our raid disks still have half of raid0 and all raid5 to fill which is about 3.5-4 hours 04:55 production (luminosity rate test) run #801, beam current 100nA PSMT prescale 90000, MOR prescale 900, lost beam for few seconds, beam is back but the current is changing form 80-100 nA. 05:00 problem with disk space is solved for now 5:30 run #801 was ended with 6000000 events, MCC needed to do some beam tuning, we have no beam 5:55 the beam is back, starting run #802 conditions are the same as in run #801, lost the beam for few seconds, the run was ended with about 4000000 events 06:25 starting run #803 (luminosity rate test), beam current 75 nA, PSMT prescale 70000, MOR prescale 700 we have 1306357 events in this run(not enough statistics) 06:30 lost the beam, MCC says our beam is causing BLM alarms and they need to figure out the reason, no idea how long it will take. 07:20 run #803 is ended to change the PSMT prescale factor to 60000 and MOR prescale factor to 600. when beam comes back a new run with 75nA current needs to be started with this prescale factors. we need about 8.7 million more events at this current.