User name Glashausser
Log entry time 16:05:46 on January25,2002
Entry number 80773
keyword=Day shift log
8AM In controlled access for calorimeter angle change for kinematics 2B.
Calorimeter set to 56deg at 7.1 m.
HRS L moved to 28.281 deg.
9:30 Start running on optics tgt (Total time elapsed since call for access to
change calorimeter position was 2 hrs.)
10:05 Beam down
10:39 beam back
10:49 start run 1643 production 2Bb
11:25 Sweep magnet on for 2Bd
12:05 Finish 2Bd
Move spectro to 29.824 deg
Change tgt to LH2 Rad
Have to lower current to about 8 to get T1 down below 1M and T5 to 1.3 kHz
12:40 have to reboot cryotgt
Discuss whether we really have to stop runs after 290K. Run length now
5-6 min at 8microA. Can take 12 mics probably. Ting says too many
problems in espace with split runs.
12:55 cryo reboot completed (took unusually long time) Had to reboot CODA
to start next run (1650)
13:25 Ting says he got 400 RCS events in one 290K run in this kinematics (1647).
We have done 5 of these. He says to do one more to be safe.
13:31 Turn sweep magnet power down and off
13:32 Start 2Bf
14:08 Reboot CODA
14:20 Finish 2Bf Change to optics target
14:28 Start 2Bg (Optics)
14:42 Finish 2B kinematics
Tech here to start survey
15:21 Back from Hall after changing calorimeter angle to 79 deg, 5.2 m
2C trigger downloaded. Threshold changed to 300MeV
15:27 Power Permit
Spectro L being reset. Angle 19.134 deg. Waited to move until
arm out of Hall.)
15:41 Beam in Hall (Less than one hr!)
15:42 Start KIN 2C
Bottom Line: KIN 2B completed. Apart from a few target reboots, no