Difference between revisions of "F2/XEM Mar 2, 2018 9:00am"
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Wait for Mark to look at the SHMS optics. | Wait for Mark to look at the SHMS optics. | ||
− | *Simona: HMS Cer calibration. [https://hallcweb.jlab.org/elogs/E12-10-002+Preparations/92] | + | *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. | 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] | *F2/XEM git repository: forked from hallc_replay [https://github.com/hallc-f2xem/hallc_replay] |
Latest revision as of 17:57, 2 March 2018
Back to DailyMeeting
Minutes
- Fernando: Looked into the adc time cuts. [1]
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. [2]
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. [3] 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 [4]
- 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.