Difference between revisions of "Run Planning Meeting Notes, Mar 04-Mar 11, 2020"

Revision as of 07:15, 9 March 2020

Last 72 hours
- Mostly production evening and overnight
Reports/Issues
- Rates instability: requested other Hall beam off and Harp Scan during "dip" in rate on Friday evening.
  - Since then the rate has been ~stable
- Multiple processes running to different edge fitting scripts caused fluctuations i (Mark D)
  - New edge fitting script in use to better determine edge and width (Mark D)
- Monitoring:
  - ρ and ω yield/trigger back to nominal values (Alex)
- something weird is fixed, was a bad ADC channel (Beni)
- Bad data from CAEN HV and intermittent LINK alarms (Hovanes)
Run Plan (Friday + Weekend)
- Production
Longer term
- Hall C down for configuration change 3/13-3/20. Good opportunity for low current TAC run.

Last 24 hours
- Limited beam yesterday morning, followed by Hall access for Solenoid VCL work (Scot/Mark)
- Steady production evening and overnight
Reports/Issues
- Rates instability: Added additional beam positions to "default" MyaViewer
  - No major instability overnight. Still plan to request other Hall beam off and Harp Scan if another "dip" in rate of 30% or more is identified by shift crew.
  - Look back at other halls during previous instabilities (Alexandre)
- Fluctuating coherent edge for 45/135 PERP (Naomi)
- ρ and ω yield/trigger (almost) back to nominal values:
  - Initial CCDB time stamp update (Alex)
  - Followup to revert TOF timewalk calibration (Beni)
- something weird (Beni)
- Updated reference plots: thanks Naomi! Experts please check your e-mails. [1]
- Bad data from CAEN HV and intermittent LINK alarms (Hovanes)
Run Plan (Friday + Weekend)
- May be some additional (short) injector tuning (A2 interception) today to keep Hall A's charge asymmetry down.
- Production
Longer term
- Hall C down for configuration change 3/13-3/20. Good opportunity for low current TAC run.

Last 24 hours
- Beam off until Wednesday @ 5 pm for injector work
- FCAL work and restoration
  - New PDU installed (Nick)
  - Restoration: [2][3] (Nick/Colin)
- Solenoid Vapor Cooled Lead (VCL) temperature drop (Mark)
Reports/Issues
- Accelerator status GUI (Naomi)
- Tagger magnet NMR signal (Tim)
- Tagger field change to photon energy calibration (Richard)
- Bad data from CAEN HV and intermittent LINK alarms (Hovanes)
- ρ and ω yield/trigger back to nominal values: e.g. Run 72076 (Alex)
  - Change of timestamp (Logbook entry?)
- Rates instability (Alexandre)
Run Plan
- Opportunistic access for solenoid work in parallel with injector tuning (1:00 pm)
- Production

@@ Line 1: / Line 1: @@
 <- Back to [[Run Coordination Meetings:Fall2019 Run]]
 [https://halldweb.jlab.org/data_monitoring/run_statistics/RunPeriod-2019-11/index.html Integrated trigger count]
+== Monday, March 9 ==
+#Last 72 hours
+#*
+#* Mostly production evening and overnight
+# Reports/Issues
+#* Rates instability: requested other Hall beam off and Harp Scan during "dip" in rate on Friday evening.
+#**
+#** Since then the rate has been ~stable
+#* Multiple processes running to different edge fitting scripts caused fluctuations i (Mark D)
+#** New edge fitting script in use to better determine edge and width (Mark D)
+#* Monitoring:
+#** &rho; and &omega; yield/trigger back to nominal values (Alex)
+#* [https://logbooks.jlab.org/entry/3798088 something weird] is fixed, was a bad ADC channel (Beni)
+#* [https://logbooks.jlab.org/entry/3797335 Bad data from CAEN HV] and intermittent LINK alarms (Hovanes)
+# Run Plan (Friday + Weekend)
+#* Production
+# Longer term
+#* Hall C down for configuration change 3/13-3/20.  Good opportunity for low current TAC run.
 ==  Friday, March 6 ==