[Alert_collaboration] [New Logentry] RC Summary July 19 - July 20 Owl

[hauenst at jlab.org]

Logentry Text:
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This is the RC summary for Day Shift July 19 to Owl shift July 20.

Overally good production data taking on Deuterium at 325nA in the last 24h.

During Day shift, we had good running with 3 roc reboots (clondaq11, adcecal1, tdcecal4) throughout the shift. In addition there were Solenoid and Torus DAQ_REC alarms indicating some writing issues of root files. Nathan was contacted and the alarms were solved 20min later. Magnet currents itself were stable and we kept DAQ running. Target purge was also completed. An additional run had to be end early due to trigger bits 25 and 26 alarm for low counts.

During Swing shift, the Solenoid and Torus DAQ_REC alarms came back but got cleared again after Nathan was contacted. Another target purge was completed and beam was off for 45-60min due to magnet issues. At the end of the swing shift a vacuum reading of 2C24 got bad (1.00E-01) and engineer on-call was contacted. It was found by Denny that the vacuum is good and just the reading is bad so we kept taking data.

During Owl shift the beam was very trippy and unstable due to issues with RF cavities for 2-3h. After some improvements from MCC beam was more stable for the rest of the night. From the hall side we just had to reboot adcecal2 and adcecal4 and cycle ATOF because it tripped.


ABU for last 24h

- 16h of ABUs ~ 66% efficiency,

- Total ABUs since April 5th: 1103.5+16=1119.5  --> 1119.5 / (75.5 * 24) = 61.8% 

- Day 106 of 151 scheduled: 106/151= 70.2%

- BANU: ~2h for DAQ resets with roc reboots, target purge, vacuum readings error at 2C24 and ATOF cycling. Overall not bad.

Plan for the next days:

Production data on deuterium at 325nA

No RC Meeting today

 

 

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