Log entry time 00:01:42 on October 10, 2010

Entry number 334146

Crew

• SL: Jin Huang
• TO: Min Huang
• Analysis: Salvatore Frullani

Time Line

• 1600 Shift started. Status:
  Run 7085
  Beam: 15uA
  Raster: 4x4mm spot++
  HRSL: 27.5 degree, 3.427GeV (Elastic +3%)
• 1614 Continue elastic scan @ dp=+3% for two hours
• 1825 Changed LHRS momentum to dp=+0% (3.327GeV/c)
• 2000 There is a glitch on coolant supply, we lost lock of target temperature although increased JT valve. Stop the beam at worst time, and recovering it as coolant get stabilized again.
• 2107 Change Cerenkov HV before start of run 7093
• 2220 Changed LHRS momentum to dp=-4% (3.194GeV/c). Went through lots of troubles. Have to manually set NMR DAC to get it locked. During the process, Alex was testing PbF2 with running beam.
• 2310 Stop run 7096 due to CODA problem. Alex come to fix it.

Run List

Elastics data, dp=+3% (3.427GeV)

• 7085: 15uA
• 7086, 7087: 10uA

Elastics data, dp=0% (3.327GeV)

• 7088, 7089: 10uA
• 7091, 7092: variable beam current during a coolant glitch
• 7093: 10uA, updated HV

Elastics data, dp=-4% (3.194GeV)

• 7096: 10uA, stopped due to CODA problem
• 7099: 10uA

Test Run

• 7094, 7095: PbF2 test by Alex