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User name Jixie Zhang
Log entry time 16:13:19 on July10,2010
Entry number 331342
keyword=Day shift summary
08:00 Shift start with beam off. We are waiting for Jack to fix the right Q1
08:30 Called MCC for escort access, will change to controlled access while Jack working in the hall
08:50 Hall was now in controlled access
12:00 Jack was out. Go back to beam permission.
13:00 Spot++ test for run 2010
13:34 Changed laser A and B mmixtrue to higher beam current
13:58 Did test run with T1 prescales calibration. Run 2016 is for T1 calibration
14:19 2018 Q1 tripped
14:21 Took run 2019 for T3 calibration.
14:30 We found that the the field of right Q1 was not reset to the right value. Before fixed it is 0.01414 and after is 0.01402. Now we recovered the field to 0.1414. Turn the regulation of right Q1 off.
Runs from 2010 to 2020 may be affected.
14:58 Run 2022 had zero rate. Tried to end it but failed. DAQ crashed! Reboot the QAQ. Both runs 2022 and 2023 are junk.
15:15 MCC called and told that they can sent us 150 micro A beam. We will go for it.
15:40 It seemed the beam current was not stable at 150 micro A, asked MCC to change to what ever high current they can go.
15:55 Increased the field of right Q1 to 0.1416, with current 563.395 A.
16:00 End the shift with data taking with run 2027.
Run T6Counts Comment
2010 spot++ test
2016 T1 Calibration
2019 T3 Calibration with T6