User name jpchen
Log entry time 15:51:28 on April 1,2005
Entry number 142980
This entry is a followup to: 142963
keyword=day shift summary continue
4/1/05 dau shift summary continue:
10:30 still smooth running.
11:50 Ran raised HV for N3-19R by 40 V, whihc is during run 3128
13:15 MCC took beam away to tune, try to improve beam quality.
Compton photon detector is turned off. Elelctron detector is on and used to check background/beam quality (~300 is good, ~3000 is high).
13:50 beam back. Compton electron rate is still high ~3000. MCC is
still looking into it.
14:20 MCC tuned beam and made the Compton electron rate down to
a few hundred Hz.
run 3127, 10:20-11:26, 300K
run 3128, 11:28-12:38, 300K, HV N3-19R raised by 40V during run.
run 3129, 12:39-13:16, 171K. MCC took beam away to tune beam quality.
run 3130, 13:55-15:05, 300K.
run 3131, 15:05-, still ongoing at the end of shift.