View source for F2/XEM Mar 2, 2018 9:00am

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== Minutes ==

*Fernando: Looked into the adc time cuts. [https://hallcweb.jlab.org/elogs/E12-10-002+Preparations/90]

check low momentum run and apply calibration param from the run to higher momentum run. Check pr vs sh correlation for different momenta. 

*Abishek: SHMS DC calibration result was shown. [https://hallcweb.jlab.org/elogs/E12-10-002+Preparations/91]

Post residual too. Send the calibration file to Abel.
For HMS, still needs to shift drift time manually for some wires. Check fit quality.

*Abel: Data vs MC comparison. Applied new calorimeter calibration from Fernando, but didn't see much of difference.  
Wait for Mark to look at the SHMS optics.

*Simona: HMS Cer calibration. [https://hallcweb.jlab.org/elogs/E12-10-002+Preparations/92] Hard to see single pe peak from scope trace. 
Inefficiency at delta < -6  and bump around 1.5. Could be hardware issue (shifted mirror?). 

PMT1 (top) covers negative delta. npe drops to around 1 at dp < -6. Perhaps FADC threshold cut into the single pe peak. 
We could just put a analysis cut or change (lower) FADC threshold. If we do change the threshold: check data and log run# when change was made.

*F2/XEM git repository: forked from hallc_replay [https://github.com/hallc-f2xem/hallc_replay]

*Run plan: Polarity change after finishing up 33 deg (probably on Sunday). 

*Special task plan: boiling study and BCM calibration.

*Dave will discuss with Eric for setting up group disk on ifarm.