[clas_members] [New Logentry] RC summary Day 08/27 - Owl 08-28

[hauenst at jlab.org]

Logentry Text:
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Yesterday day and early swing shift was maintenance and RF recovery. This went very smooth and we got beam earlier than expected at around 9pm. First we sent beam to tagger and did harp scans which were okay. Afterwards we went to faraday cup and harp scans were okay as well. Target was filled with hydrogen and we started the 1pass data collection. Initially we wanted to go to 400nA, 200nA and 100nA but 400nA was too high trigger rate and DC occupancy (and we were also limited to 350 by Ops restriction). At the end we took data at 300nA, 150nA  and 75nA. We completed the required data taking at around 7:30.

Summary of Pass 1 data on hydrogen
Time/charge for 300nA: ~2.5 ABU / 2.34 mC
Time/charge for 150nA: ~2.5 ABU / 1.21 mC
Time/charge for 75 nA: ~2.5 ABU / 0.79 mC

Plan for today:
- Pass change to 3rd pass
- Torus polarity back to inbending
- Target back to He
- Beam checkout to tagger and FC, Moller run to check polarization after Wien angle change
- Continue production at 300nA on He

RC meeting at 10am, in person at CH 200 or on zoom at https://jlab-org.zoomgov.com/j/1605705819

Shift summaries:
DAY: https://logbooks.jlab.org/entry/4451718
SWING: https://logbooks.jlab.org/entry/4451906
OWL: https://logbooks.jlab.org/entry/4452109



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