Difference between revisions of "Run Planning Meeting Notes, Apr12-Apr 18, 2018"

Revision as of 06:55, 16 April 2018

Notes from the previous 24 hours:
- TAC run (evening strip chart) was finished around 10pm. Took data with both the 750um and 75um converter.
- Production started around 11 pm and has continued through the night.
Issues:
- When adjusting a procedure, please contact the expert before doing so to make sure the changes you make are okay.
- ~1hr 20 mins of DAQ issues while the target was filling and we could not run in raw mode.
- PS scalers (Alexandre)

Reports:
- Correlation between beam Y position and CDC HV current (Beni)
- Attenuation lengths (Lubomir)
- PS acceptance from TAC run with 1/3 of data (Sasha)
- Low Level Monitoring Report (Thomas)
Run Plan
- Pass change this morning
  - Short access to install copper and tungsten shields
  - Move muon chamber back into beam line
- Production running
  - Harp scan when beam comes back
- Fast raster scan postponed to Monday
- Any more systematic studies we want to do?
AOB

Notes from the previous 24 hours:
- No beam until 4pm
- Finished materials scan at 5:35pm
- Finished raw mode run
- Bill broke the 7hr mark for ABU during his shift- first time a hall has done that this spring
- Muon chamber installed with the steel bar
- New radiator on GEM TRD
- Shields installed on profiler
Issues:
- Bill noticed some minor inconsistencies with monitoring plots (beta vs. p, beam energy, and trigger bit)
Reports:
- Harp scan (Hovanes)
- Materials scan (Lubomir)
- Low level monitoring (Thomas)
Run Plan
- Todd wants to try a low current lock on the active collimator at ~1pm
- Trigger studies (~2hr)
- Hovanes and Sasha need to test V wire and lock on active collimater (~10 minutes)
- Production and switching to the thin diamond next week

AOB
- Have Lubomir for opportunistic access to remove Cu and half of W shield- any others? Beam studies on Monday and RF recovery Tuesday
- Run meeting this weekend?

No meeting

No meeting

Notes from the previous 48 hours:
- Production running plagued by pass 2 separator trips Friday night and Saturday morning
- Low current AC test delayed due to voltage adapter problem. Tentative postponement until Wed.
- New preamp (and calibration) fixes noisy CDC channels (Naomi)

Issues:
- Low yield of physics signals (Mark D.)
  - Larger variations in detector timing than normal (Sean)
  - Range of interesting timing features (Mark D.)
- Newly inefficient PS channel (Dave)
- Trouble putting rootspy histograms in logbook
Reports
- [1], [2] Figure of merit vs. virtual electron spot size (Justin)
- Sunday's harp scan (Hovanes)
- PS baselines adjusted (Sasha)
Run Plan
- 8hr beam studies today
  - Controlled access to adjust shielding, replace AC voltage adapter, and ?
- Production this evening
- RF recovery tomrrow
AOB

@@ Line 72: / Line 72: @@
 #** [https://logbooks.jlab.org/entry/3560651 Range of interesting timing features] (Mark D.)
 #* [https://logbooks.jlab.org/entry/3561130 Newly inefficient PS channel] (Dave)
+#* [https://logbooks.jlab.org/entry/3561374 Trouble putting rootspy histograms in logbook]
 #Reports
 #*[https://logbooks.jlab.org/entry/3560023], [https://logbooks.jlab.org/entry/3560036] Figure of merit vs. virtual electron spot size (Justin)