Log entry time 07:56:05 on November21,2005

Entry number 160852

Owl Shift Summary



Taking production data.

SLUG 40 (IN)  total  = 581.8 kilopairs [2.21 C] (runs 6589-6611)

Flipped IHWP to OUT

SLUG 41 (OUT) so far = 236.1 kilopairs [0.89 C] (runs 6612-6618)



Owl Shift Log



0000:0025   taking over run happex run 6610 from swing shift

0025:0121   happex run 6611

0121:0126   flipperinated IHWP to OUT

0126:0221   happex run 6612

0221:0317   happex run 6613

0317:0413   happex run 6614

0408:0433   beam gone b/c RF zone lost

0413:0434   happex run 6615 (cosmics)

0436:0531   happex run 6616

0531:0627   happex run 6617

0628:0724   happex run 6618

0724:0800   happex run 6619 handed off to day shift



People on Shift



Jaideep Singh

Al Tobias



Experimental Parameters



beam current = 58.5 +/- 0.2 microamps

target = LH2 in Loop 2 [T = 19.00 +/- 0.02 K, P = 23.6 +/- 0.2 psi, fan frequency = 90.92 +/- 0.02 Hz]

left  HRS (set) = 3.12340 GeV/c          right HRS (set) = 3.11260 GeV/c

left  septum (set) = 323.61 A            right septum (set) = 316.92 A

sweeper magnet (set) = 111.0 A



Runs Summary



happex time   run#  type        BHWP  equivalent "ok" two-arm pairs

2329:0025     6610  production  IN    37830

0026:0121     6611  production  IN    38451, a few helicity errors

0126:0221     6612  production  OUT   40143

0222:0317     6613  production  OUT   43099, a few helicity errors

0318:0413     6614  production  OUT   35162, a few helicity errors

0417:0434     6615  cosmics     OUT   35613 total events , a little beam at the end of the run

0436:0531     6616  production  OUT   36495

0532:0627     6617  production  OUT   44738

0628:0724     6618  production  OUT   36450

0724:xxxx     6619  production  OUT



total number of "ok" pairs     = 312.368 kilopairs

estimated "two-arm" production = 1.182 C

estimated shift productivity   = 78.0 percent



compton time  run#    (beam polarization)*(photon polarization) [stat err only] or comments

2335:0121     12952   -(89.9 +/- 0.6)%, ended early to flip IHWP, run end failed so "Cancel/Reset/Configure/Download"

0125:0220     12953                   , no analysis?, ended early b/c ROC0 died, coda reboot

0227:0413     12954   +(89.9 +/- 0.7)%, ended early b/c beam gone, run end failed so coda reboot

0443:0649     12955   +(88.8 +/- 0.5)%, perfect!!!

0650:xxxx     12956