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User name S. Sirca
Log entry time 15:58:40 on June17,2001
Entry number 63572
keyword=Summary of day shift
08:00 -- Continuing production runs at 10 muA with P=37.3% (EPR) and P=34.2%
(NMR) measured at around 7am. Problems with charge asymmetry reported from
the previous shift, will try to figure out what is going on. (See halog
entry 63470 et seq., and the conclusions in 63559.)
Run# Start/Stop Events* Comments
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1616 07:27/08:27 550 ok, production
1617 08:31/09:31 610 ok, production
1618 09:34/10:34 580 ok, production
1619 10:37/11:04 290 ok, production
11:04 chg beam lam/2 -110ppm -> +350ppm in cntrl
since the asymmetry was way off
1620 11:07/12:08 590 ok, production, performed EPR during this run
12:09 P=37.2% (EPR)
1621 12:10/13:09 620 ok, production
13:11 shift qasy control by +100ppm
1622 13:12/13:17 junk, beam off
13:17/13:35 beam off, MCC need to look into trim lock
1623 13:38/14:40 590 ok, production
qasy control is now set at 0ppm and seems OK
1624 14:43/15:43 590 ok, production
1625 15:45/----> run passed on to the evening shift
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(*) Rough estimate using T3[0]*0.6%, which is the fraction of T3[0]
counts surviving the Cerenkov ADC, zreact and (pre)shower cuts in the
left arm according to Xiaochao. The rate of useful events is then
approx. 540 per hour of running with 10 muA.