User name Saha
Log entry time 20:57:59 on December 15,1999
Entry number 31159
keyword=Arc-Energy at 4 GeV, Dec 15,1999
Hall A Arc Energy measurement, 5 pass (4 GeV), Dec 15,1999
Angle = 34.30385 deg = 0.598715 rad (Avg. of Scans #: 340,341)
BdL = 8052.90 T.mm (Avg. of Run # 530, 531)
Hall A Energy = 4032.29 MeV +/- 0.8 MeV
The Bdl value remain fixed at 8052.9 T.mm between the achromatic setup tune and the energy measurement dispersive tune. The MCC integral set value = 1009150 Gauss.cm. We should have these values when we go to 4 GeV running.
The fast feedback was on, orbit lock in Hall A , energy lock in Hall C. There were still some 120 Hz and 220 Hz noise in 1C12 and 1C16 BPMs, but the scans were good enough to get an angle measurement (see scan #341) below.