March 4-10

Monday, March 4

• The source of the 20 sec oscillation in the target leak rate (see https://logbooks.jlab.org/entry/3662109) turned out to be oscillations in the spring loaded plate at the end of the H2 line which goes outside of the hall. Chris solved this issue by removing the N2 from the line, which shouldn't be an issue since we're running with LHe instead of LH2.
• Target is full of liquid, the temperature is still dropping (will probably stabilize within the hour)
• Need to check with David Lawrence to be sure target pressure and density is in data stream.
• Ilya's plots showing total Be runs statistics: https://logbooks.jlab.org/entry/3662704
• Some discussion needs to be had regarding the impact of using the drift chambers

Tuesday, March 5

• Ilya's plots with some initial accidental subtraction: https://userweb.jlab.org/~ilarin/be/
• Sasha's trigger studies: https://logbooks.jlab.org/entry/3663674
• Sasha and Drew will work on uploading CCAL Geometry into database
• Sasha mentions that we should add some plots characterizing pi0 and eta inv mass in FCAL to the monitoring routine.

Thursday, March 7

• Beam is expected to return during the OWL shift; Alex will be in the counting house at 12 am to fill target.
• We will start production with same settings from before beam energy change.
• Sasha will try to unmask some channels tomorrow morning and also work on adding the ancillary triggers (e.g. CCAL only).