Log entry time 08:05:45 on November15,2005

Entry number 160258

Owl Shift Summary



Taking production data.

SLUG 34 (IN) total so far = 453.9 kilopairs (runs 6452-6470)



Owl Shift Log



0000:0050   taking over happex run 6463 from swing shift

0050:0146   happex run 6464

0146:0242   happex run 6465

0214:0245   beam gone due to RF cavity problems, bypass

0242:0340   happex run 6466

0340:0437   happex run 6467

0437:0533   happex run 6468

0456:0515   beamline HV trip, HALOG 160246

0533:0630   happex run 6469

0630:0726   happex run 6470

0726:0800   happex run 6471 handed off to day shift



People on Shift



Bryan Moffit (0000:0800)

Jaideep Singh

Al Tobias



Experimental Parameters



beam current = 57.7 +/- 0.2 microamps

target = LH2 in Loop 2 [T = 19.00 +/- 0.02 K, P = 24.0 +/- 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

2354:0050     6463  production  IN    36195

0051:0146     6464  production  IN    28022

0147:0242     6465  production  IN    17786

0244:0340     6466  production  IN    33190

0341:0437     6467  production  IN    36289

0437:0533     6468  production  IN    38632, a few helicity errors

0534:0630     6469  production  IN    33561

0630:0726     6470  production  IN    27189

0727:xxxx     6471  production  IN    ?????, a few helicity errors



total number of "ok" pairs     = 250.864 kilopairs

estimated "two-arm" production = 0.94 C

estimated shift productivity   = 62.7 percent



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

2301:0051     12861   -(86.4 +/- 0.6)%, end failed b/c ROC0 died, cancel/reset/configure/download

0052:0302     12862   -(83.9 +/- 0.6)%

0304:0356     12863   -(86.0 +/- 0.8)%, ended early b/c ROC0 died, coda reboot

0401:0458     12864   -(85.3 +/- 0.8)%, ended early b/c photon detector HV tripped off, end run fail, coda reboot

0514:0648     12865   -(89.2 +/- 0.7)%, ended early b/c ROC5 died, coda reboot

0655:0720     12866   -(90.6 +/- 2.5)%, ended early b/c ROC1 died, coda reboot

0727:xxxx     12867   ???