[Hallc_running] [New Logentry] RC Daily Update - May 17

[ssanties at jlab.org]

Logentry Text:
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Good beam in the last 24 hours!

Finished tasks: 
* We did not make an access to reach 12.373 degrees with HMS, instead the kinematics settings were updated to and HMS angle of 12.495 deg (KinC_x36_3). See short term plan for more details: https://hallcweb.jlab.org/wiki/index.php/Short_Term_Run-Plan
* NPS rates study was performed: https://logbooks.jlab.org/entry/4306116 However, we still need to make some adjustments when we initiate a new setting, since the NPS study did not account for the HMS angle and momentum, so the event rate and data rate sometimes are outside the desired threshold and we reduce the current to be within the limits. 

Data taken:
KinC_x60_4 is completed
KinC_x36_5 is completed
KinC_x25_4 is completed
KinC_x36_6 is completed
We are initiating the second cycle of all kinematics.
Note: when the current was < 10 uA we took 15 minutes Carbon data (0.5%) at 10 uA and at the minimum current used in the kinematic.

Outstanding issues: 
* The magnet did not lock for Kin_x25_4: https://logbooks.jlab.org/entry/4306465 (nothing we can do about it, it also happened at midnight)
* The heater on loop 3 power went down: https://logbooks.jlab.org/entry/4306630 but it recover on its own after approximately 40 minutes (no data was taken at that moment with H2, so it should not have any impact, we were in the solid targets during that time. 

Items to discuss: 
* After 11 am the experiment will have 44 hours before the beam studies begin, in principle (if not major delays happen), the 9 data sets with the second cycle of the kinematics will take approximately 40 - 42 hours, based on our last 48 hours estimates. If there is any important test to do, please consider make sure you let us know as soon as possible. 
* The beam studies (May 19) agenda is live: 

0700-0800, allsave, fopt, E01 harp traces as time allows. Hall A access starts as soon as RadCon survey starting at 0700 is complete.
0800-1000, BLM calibration, ATLIS 107920, can start as soon as allsave is complete HALLA access continues, ending 10AM.
1000-1300, FFB/FF in Hall A, 25uA CW and up,  Need Hall A parity DAQ to take data to ensure FFB/FF satisfies MOLLER requirements
1300 -1330, Raytrace, ATLIS 111826, 
1330-1730, Injector tune for high intensity run, beam in injector only.  Parasitic tests in parallel SRF cavity emission test SRF DAQ calibration test Increase HV on two of the RF zones in SL. RF support, Bill Baumgartner ATLIS 112070 Rama test plan could also be run during this time
1730-0500, BLA cal followed by high current push, beam to Halls A (~40) and C (~60 uA) Need RF support BSLIST 111972
0500-0700, QTSnyder testing 

We may get beam in the FFB/FF from 1000-1300, FFB/FF as requested. But from 0500-0700 current will be above 60 uA or as high as they can get and we can not have any requests. 

Link to the 11:00 RC meeting: 
https://jlab-org.zoomgov.com/j/1617015555?pwd=L09IQ216dml6ZmM5ODExVjFsMX
Meeting ID: 161 701 5555
Passcode: 288953
If you are in near the counting house, you can join us in person (this may be our last one of the run). 

Nathaly Santiesteban





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This is a plain text email for clients that cannot display HTML.  The full logentry can be found online at https://logbooks.jlab.org/entry/4306822
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