RC meeting and Run Plan, Saturday November 19th
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Contents
RC Meeting Information
No RC meeting on Saturday and Sunday
RC Updates
Summary of swing 11/18 - day 11/19
- Continued production run on polarized He3 target @45uA beam current with prescale: ps1=9, ps2=15, ps3=0, ps5=3 and all other -1
- DAQ crashed few times during swing and owl shift, restarted the platform (or xterms) to get it fixed
- Bill worked around the oven temperature to make it more uniform https://logbooks.jlab.org/entry/4087154 , but it seems higher oscillation rate with lower temp variation
- Recent NMR sweep target polarization 45.4% (at 11:50 am) and 45.8% (at 2:40pm) today
Run plan for until tomorrow
- Continue production data taking on polarized He3
- 45uA of beam current | Use ps1=9, ps2=15, ps3=0, ps5=3, rest =-1 | One hour long runs
- Move the target to the pickup coil position, and do NMR sweep around every 3 hours
- Return to step 1
Issues
- DAQ rate dropping during even if beam is on => Expert need to figure out issues and permanent solution
- Dump right Ion chamber cabling needs to be changed => Jerry Kowal will try to fix for short term by changing cable on next longer downtime
