Difference between revisions of "2018 Data - Analysis Page"
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* [https://wiki.jlab.org/xem2wiki/images/7/75/TGT-RPT-18-001.pdf Target configuration report] | * [https://wiki.jlab.org/xem2wiki/images/7/75/TGT-RPT-18-001.pdf Target configuration report] | ||
** Note: cryotargets need to subtract window thickness and apply a correction of 0.996 due to length contraction at low temperature | ** Note: cryotargets need to subtract window thickness and apply a correction of 0.996 due to length contraction at low temperature | ||
| − | * [https://wiki.jlab.org/xem2wiki/images/e/e0/DT_C1819.pdf Target ladder survey] | + | * [https://wiki.jlab.org/xem2wiki/images/e/e0/DT_C1819.pdf Target ladder survey] |
| + | ** Note: z position of "raster target" is upstream face. All solid targets have upstream face at same psoition. | ||
* [https://wiki.jlab.org/xem2wiki/images/5/5f/Solid-tgt-thick-notes.pdf Solid target notes] | * [https://wiki.jlab.org/xem2wiki/images/5/5f/Solid-tgt-thick-notes.pdf Solid target notes] | ||
** Note: I think there was a transcription error for the carbon target. The report says 0.5244 g/cm2. I get 0.5224 g/cm2 from the notes above. | ** Note: I think there was a transcription error for the carbon target. The report says 0.5244 g/cm2. I get 0.5224 g/cm2 from the notes above. | ||
Revision as of 11:31, 2 February 2021
2018 Data: Analysis Summary
Target Information
- Target configuration report
- Note: cryotargets need to subtract window thickness and apply a correction of 0.996 due to length contraction at low temperature
- Target ladder survey
- Note: z position of "raster target" is upstream face. All solid targets have upstream face at same psoition.
- Solid target notes
- Note: I think there was a transcription error for the carbon target. The report says 0.5244 g/cm2. I get 0.5224 g/cm2 from the notes above.
- Beam and target offsets:
- Analysis of SHMS/HMS C data (log entry needed)
- Offsets to put in MC (from email from Abishek)
- x-spec offset = +0.127 cm
- y-spec offset = -0.057 cm
- x-beam offset = (0.073 - x-bpm) cm
- z-target offset = 0.212 cm (carbon target)
- How I get Boron from B4C: [1]
BCM calibration
- Summary from Deb
- Correction for runs 2557-2563 (multiply charge by 1.0115) XEM2 elog 60
Efficiencies and corrections
- Target Boiling
- LH2 target:
- LD2 target:
- SHMS
- NGC efficiency lookup table: F2 elog 317
- Calorimeter efficiency: F2 elog 287 (can't find log entry with polynomial form)
- Trigger efficiency
- Electronic dead time
- FADC dead time (100 ns)???
- HMS
- Cerenkov efficiency
- Calorimeter efficiency
- Trigger efficiency
- Electronic dead time
- FADC dead time (100 ns)???
- EMC only
- Isoscalar corrections
