Difference between revisions of "Run Planning Meeting Notes, Dec 5-Dec 11, 2018"
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#* Sasha checked one noising CompCal channel and found out that it was caused by the FADC baseline | #* Sasha checked one noising CompCal channel and found out that it was caused by the FADC baseline | ||
# Sasha adjusted CCAL LED trigger time delay https://logbooks.jlab.org/entry/3635382 | # Sasha adjusted CCAL LED trigger time delay https://logbooks.jlab.org/entry/3635382 | ||
− | # Production trigger rate study was performed by Sasha during afternoon and evening | + | # Production trigger rate and CompCal rate study was performed by Sasha during afternoon and evening, https://logbooks.jlab.org/entry/3635399, https://logbooks.jlab.org/entry/3635391 |
− | + | ||
# MCC plan for the coming week | # MCC plan for the coming week | ||
#* MCC will continuously deliver beam throughout the rest of week with 1.83 GeV/pass (10.3 GeV for Hall D). | #* MCC will continuously deliver beam throughout the rest of week with 1.83 GeV/pass (10.3 GeV for Hall D). | ||
Line 12: | Line 11: | ||
# Jay Benesch has initiated a discussion with a group of experts to investigate the feasibility of monitoring 1-2 nA beam current for Hall D. | # Jay Benesch has initiated a discussion with a group of experts to investigate the feasibility of monitoring 1-2 nA beam current for Hall D. | ||
# Tagger scaler distribution shows that we have beam leakage from Hall C. https://logbooks.jlab.org/entry/3635351 | # Tagger scaler distribution shows that we have beam leakage from Hall C. https://logbooks.jlab.org/entry/3635351 | ||
+ | # We have been taking Compton production data on LH2 target since midnight. | ||
+ | |||
+ | ==Thursday, Dec 6 at 8:45 == | ||
+ | # Several items were fixed during a controlled access in the morning | ||
+ | #* Change electronics for DAQ by Sasha | ||
+ | #* Calibrate He level DP for solenoid magnet by Marc and Scott | ||
+ | # A few hours used to test newly updated DAQ by Sasha and Ben | ||
+ | # ~5 hours no beam from late afternoon to evening | ||
+ | # Colin and Josh adjusted FCAL high voltages for the inner four layers of counters based on the gain factors provided by Ilya. | ||
+ | # Analyzed data took the day before to study CompCal gain stability at different beam current up to 350nA on LH2. It looks stable for the counters close to beam hole. | ||
+ | # Found about 7 counters have non-lineraty vs energy (up to 8%). The rest of counters are linear. | ||
+ | # Started CompCal scan during owl shift with both LED trigger and CompCal trigger. TAC in data stream. DAQ in raw mode. | ||
+ | # Plan for today and weekkend: | ||
+ | #* Finish CompCal performance study and take data on LH2 target and empty target data | ||
+ | |||
+ | ==Monday, Dec 10 at 8:45 == | ||
+ | # CompCal Calibration and performance study were completed at 11:30pm on Sat. | ||
+ | #* Snake scan in raw mode | ||
+ | #* energy and position resolution study | ||
+ | #* Quick scan with TAC and CCAL triggers to study CompCal energy leakage and inefficiency in production mode | ||
+ | # Compton production data collection on LH2 target with 150nA current started at 12:00am and ended at 3:37pm on Sunday. A total of 752M events are collected. | ||
+ | #Started to empty the target cell at 3:38pm on Sunday. Took empty target data with 300nA current until 6:am on Monday. A total of 201.5M events are collected | ||
+ | # Issues: | ||
+ | #* DAQ crashed several times | ||
+ | #* DAQ error message for setting up random factor | ||
+ | #* Online monitoring histograms are not updated on Sunday. it is working now. | ||
+ | #Be target installation is postponed in order to make sure that we have good quality LH2 data | ||
+ | #Plan for today: | ||
+ | #* Remove vacuum pipe in front of CompCal | ||
+ | #* Survey CompCal in beam position | ||
+ | #* Install electronics for alpha source trigger. | ||
+ | # MCC energy change process started this morning at 6:00am and is scheduled for three days. The beam may come back earlier than originally plan, according to PD. | ||
+ | |||
+ | ==Wed, Dec 12 at 8:45 == | ||
+ | #Engineering group removed the vacuum pipe in front of CompCal on Monday | ||
+ | #Survey on CompCal in the beam position was performed | ||
+ | #Ilya has been working on calibration of CompCal and FCAL. He also found a few CompCal channels have low statistics in snake scan data. We may need re-scan those channels at the end of run. | ||
+ | #David add CompCal in hdview2 https://logbooks.jlab.org/entry/3637304. We also need add CompCal monitoring histogram in the root spy. | ||
+ | #Sean took look at timing monitoring and calibration for the current data, https://logbooks.jlab.org/entry/3636866, https://logbooks.jlab.org/entry/3636988 | ||
+ | #Where we are based on the run plan https://halldweb.jlab.org/primexd/run_plan/Run_Plan_Fall_2018-v5.pdf | ||
+ | # Plan for the next a few days, https://cnidlamp.jlab.org/RareEtaDecay/JDocDB/system/files/biblio/2018/12/run-dec12-19.pdf |
Latest revision as of 09:42, 12 December 2018
Contents
Wed, Dec 5 at 8:45
- Several items were fixed during a controlled access in the morning
- Amorphous radiator ladder by Hovanes and Scot
- Colin replaced a few bad FCAL bases
- Sasha checked one noising CompCal channel and found out that it was caused by the FADC baseline
- Sasha adjusted CCAL LED trigger time delay https://logbooks.jlab.org/entry/3635382
- Production trigger rate and CompCal rate study was performed by Sasha during afternoon and evening, https://logbooks.jlab.org/entry/3635399, https://logbooks.jlab.org/entry/3635391
- MCC plan for the coming week
- MCC will continuously deliver beam throughout the rest of week with 1.83 GeV/pass (10.3 GeV for Hall D).
- On Dec 9 (Monday), the beam will be off at 6:00am. MCC will change energy to 1.61 GeV/pass (9 GeV for hall D). This process is planned for three days (DeC 9-12).
- Jay Benesch has initiated a discussion with a group of experts to investigate the feasibility of monitoring 1-2 nA beam current for Hall D.
- Tagger scaler distribution shows that we have beam leakage from Hall C. https://logbooks.jlab.org/entry/3635351
- We have been taking Compton production data on LH2 target since midnight.
Thursday, Dec 6 at 8:45
- Several items were fixed during a controlled access in the morning
- Change electronics for DAQ by Sasha
- Calibrate He level DP for solenoid magnet by Marc and Scott
- A few hours used to test newly updated DAQ by Sasha and Ben
- ~5 hours no beam from late afternoon to evening
- Colin and Josh adjusted FCAL high voltages for the inner four layers of counters based on the gain factors provided by Ilya.
- Analyzed data took the day before to study CompCal gain stability at different beam current up to 350nA on LH2. It looks stable for the counters close to beam hole.
- Found about 7 counters have non-lineraty vs energy (up to 8%). The rest of counters are linear.
- Started CompCal scan during owl shift with both LED trigger and CompCal trigger. TAC in data stream. DAQ in raw mode.
- Plan for today and weekkend:
- Finish CompCal performance study and take data on LH2 target and empty target data
Monday, Dec 10 at 8:45
- CompCal Calibration and performance study were completed at 11:30pm on Sat.
- Snake scan in raw mode
- energy and position resolution study
- Quick scan with TAC and CCAL triggers to study CompCal energy leakage and inefficiency in production mode
- Compton production data collection on LH2 target with 150nA current started at 12:00am and ended at 3:37pm on Sunday. A total of 752M events are collected.
- Started to empty the target cell at 3:38pm on Sunday. Took empty target data with 300nA current until 6:am on Monday. A total of 201.5M events are collected
- Issues:
- DAQ crashed several times
- DAQ error message for setting up random factor
- Online monitoring histograms are not updated on Sunday. it is working now.
- Be target installation is postponed in order to make sure that we have good quality LH2 data
- Plan for today:
- Remove vacuum pipe in front of CompCal
- Survey CompCal in beam position
- Install electronics for alpha source trigger.
- MCC energy change process started this morning at 6:00am and is scheduled for three days. The beam may come back earlier than originally plan, according to PD.
Wed, Dec 12 at 8:45
- Engineering group removed the vacuum pipe in front of CompCal on Monday
- Survey on CompCal in the beam position was performed
- Ilya has been working on calibration of CompCal and FCAL. He also found a few CompCal channels have low statistics in snake scan data. We may need re-scan those channels at the end of run.
- David add CompCal in hdview2 https://logbooks.jlab.org/entry/3637304. We also need add CompCal monitoring histogram in the root spy.
- Sean took look at timing monitoring and calibration for the current data, https://logbooks.jlab.org/entry/3636866, https://logbooks.jlab.org/entry/3636988
- Where we are based on the run plan https://halldweb.jlab.org/primexd/run_plan/Run_Plan_Fall_2018-v5.pdf
- Plan for the next a few days, https://cnidlamp.jlab.org/RareEtaDecay/JDocDB/system/files/biblio/2018/12/run-dec12-19.pdf