Log entry time 07:59:33 on October20,2005

Entry number 157480

♠ Øwl $hift §ummary ♠



0000:0022   taking over from swing shift, HAPPEX run 5755

0022:0118   HAPPEX run 5756

0120:0216   HAPPEX run 5757

0216:0312   HAPPEX run 5758

0312:0409   HAPPEX run 5759

0409:0505   HAPPEX run 5760

0505:0602   HAPPEX run 5761

0602:0658   HAPPEX run 5762

0658:0754   HAPPEX run 5763

0754:0800   HAPPEX run 5764 handed over to day shift



‡ Owling Shifters ‡



Etienne Burtin

Jaideep Singh

Ryan Snyder (0000:0800)



€xperimental Parameters



beam current = 57.3 ± 0.1 µA

target = LH2 in Loop 2 [T=19.00 ± 0.02 K, P=24.4 ± 0.2 psi, ν = 90.90 ± 0.02 Hz]

left  HRS (set) = 3.12340 GeV/c

left  septum (set) = 323.62 A

right HRS (set) = 3.11260 GeV/c

right septum (set) = 316.92 A

sweeper magnet (set) = 111 A



ℜuns Summary



happex time   run#  type        BHWP  good pairs

2326:0022     5755  production  OUT   38.7k

0022:0118     5756  production  OUT   36.4k

0120:0216     5757  production  OUT   44.8k

0216:0312     5758  production  OUT   42.4k

0313:0409     5759  production  OUT   39.0k

0409:0505     5760  production  OUT   36.9k

0506:0602     5761  production  OUT   46.1k

0602:0658     5762  production  OUT   43.6k

0659:0754     5763  production  OUT   37.8k

0754:xxxx     5764  production  OUT



$hift productivity ≅ 0.80

estimated "two-arm" production ≅ 1.36 C



compton time        run#    Pe·Pγ or comments

2239:2310           12430   +85.8%

2311:2346           12431   +85.5%

2349:0030           12432   +85.1%

0037:0154           12433   no analysis output

0157:0331           12434   +89.5%

0336:0419           12435   +85.0%

0425:xxxx           12436   ------



(the compton computer time seems to be off by an 1 hour and then some)