RGM RC Meeting Feb2 Feb9

Tuesday, Feb 1, SWING

* running 6 GeV 25 nA on LAr until 8pm 

* empty LAr target 
* 1 hour empty target run, 150nA, beam blocker IN
* beam blocker calibration 

* insert single foil Sn (200 mg/cm2) target
* beam blocker calibration for 6 GeV on single foil Sn target 
** noticed that target cannot be in beam
* beam line expert (Eugene) to the rescue: positions target per expert mode

* beam blocker calibration from 4 GeV run on Sn(x4) target is uploaded
* start running on repositioned target Sn with 90 nA, beam blocker IN
** tdcpcal3 histograms empty goes unnoticed

Wednesday, Feb 2, OWL

* continue running on Sn target with 90 nA, beam blocker IN
** some detector/DAQ issues, some beam issues 
** tdcpcal3 histograms empty goes unnoticed
** BST has noisy strips with SN target and in beam 
*** expert: most prominent with tin target and this might be due to electrical conductivity of the foil

Wednesday Feb 2, DAY

* warming up LAr target to room temp while running
* continue running on SN target with 90 nA, beam blocker IN
** tdcpcal3 issuefixed
** more issues: HV drop pcal and ftof in sector 3, ok after turning HVs back on

* BST noisy strips: access hall to make a test with target motor off, no change

* performed beam blocker calibration with Sn target
* continue running on Sn target with 90 nA, beam blocker IN