Commissioning Calibration Data
From GlueXWiki
Fall 2015
Calibration data needs as of Oct. 22, 2015
Detector | Status | Data in Hand | Est. Data Needed | Est. Running Time | Notes |
---|---|---|---|---|---|
BCAL | More Needed | 1.3 M (pi0) | 100x | pi0 numbers assuming cluster > 350 MeV | |
CDC | More Needed | ||||
FCAL | More Needed | 125k | 10x | pi0 cluster energy > 1 GeV | |
FDC | More Needed | 3 shifts, 10^-4 radiator, 100 nA, no field needed | |||
PS/PSC | OK | ||||
Start Counter | More Needed | 75 M | 20x | basic calibrations are good, more refinement possible | |
TAGH | OK | ||||
TAGM | More Needed | 10 M - 50 M | |||
TOF | OK | need to verify stability of calibrations with more data |
Notes
- Data needed depends strongly on S/B, especially for calorimeters
Scaling from 6 GeV to 12 GeV
- 6 GeV settings: 5.5 GeV e- beam, 50 um diamond radiator, 5 mm collimator, E(gam) = 2 - 5.5 GeV
- 12 GeV settings: 12 GeV e- beam, 20 um diamond radiator, 3.4 mm collimator, E(gam) = 7 - 12 GeV
- rate(12 GeV) / rate(6 GeV) ~ 80% [using cobrems in bggen, incl. plastic target on nose removal in 12 GeV era].