Log entry time 03:29:28 on February 14, 2009

Entry number 261058

This entry is a followup to: 261030

Several prescale combo has been tried to opimize data taking after T6 thrshould change. The final setting was to take ~3KHz T2 and 200Hz T6 and bring the DT to 6% (consitant between Datamon and BBNormAna).

Besides, since data rate doubled, the total event for each run was set to 5M, bringing file spliting from 3splits to 5 splits.

A new scalar replay tool is setup for experts: replay_scalar_BB(<run#>). it's suggested to replay1M events (=5min data taking time). It would take 5-10min to finish the analysis (totally depends on the raw data file read speed) and generate a 10MB- slim root file.

Time Line 

• 12:24 Changing T6 Thr to -80mV
• 12:25 Strarting run 1404; Prescale to 0 T1; 1KHz T2; 100Hz T6; Off line 180K events DT = 5.7% (could be much smaller)
• 12:31 Starrting run 1405; Prescale to 0 T1; 2KHz T2; 170Hz T6; Off line 1M events DT = 3.9%
• 1:50 Starting run 1409; Prescale to 0 T1; 3KHz T2; 200Hz T6; Off line 1M events DT = 6.3%