Calibration Dashboard
From GlueXWiki
Fall 2014 Data Calibration Status
This table summarizes the status of the calibrations that have been stored in the CCDB.
Last Updated -- 17 Feb. 2015
- red - This category has not been calibrated
- yellow - Calibrations have been partially done, or done with cosmic ray or other non-photon beam data
- green - Calibrations have been done with photon beam data
| Detector | Base Time | fADC E scale | fADC gains | fADC timing | TDC timing | TDC timewalk | Reconstructed Objects | Alignment | |
|---|---|---|---|---|---|---|---|---|---|
| BCAL | N/A | 1 2 | 1 | ||||||
| CDC | N/A | N/A | 1 | ||||||
| FCAL | 1 | 1 | N/A | N/A | |||||
| FDC | N/A | N/A | |||||||
| PS/PSC | |||||||||
| Start Counter | 1 | ||||||||
| TAGH | 1 | 1 | |||||||
| TAGM | 1 | 1 | |||||||
| TOF | 1 |
Notes:
- "Base time" refers to the relative timing between different detectors.
- The fADC and TDC categories refer to per-channel calibrations.
- The high-level reconstruction objects are the final inputs to a physics analysis. The low-level reconstruction objects are whatever objects are built from the calibrated hits and used to build the high-level objects.
Performance
Values obtained from data are shown in blue.
| Detector | Timing resolution | Energy Resolution | Spatial Resolution | Efficiency |
|---|---|---|---|---|
| BCAL | 1.8 ns / 70 ps/sqrt(E) | ~19 MeV (pi0 mass, E(pi0)>1.5 GeV)/ 5.4%/sqrt(E) + 2.3%, 8.7 MeV (pi0 mass) | 6 cm (ADC), 35 cm (TDC) [z] / ~8 mrad (trans.); 1.1 cm/sqrt(E) [z] | > 90% |
| CDC | / | / | ~150/250 um (far/close to wire) / ~200 um | <~95% |
| FCAL | 3.2 ns / ~0.4 ns | ~11 MeV (pi0 mass) / 5.6%/sqrt(E) + 3.5%, 8.7 MeV (pi0 mass) | / 6.4 mm/sqrt(E) | |
| FDC | / | / | 150-250 um / ~200 um | ~95% |
| PS/PSC | / | / | / | |
| Start Counter | ~480 ps / 350 ps | / | / | ~90% |
| TAGH | 1.6 ns / | / | / | ~85% |
| TAGM | 1.6 ns / | / | / | <~70% |
| TOF | ~150 ps / ~90 ps | / | ~1.2 cm / |
Notes:
- When possible, the results are given as "Measured / Design"
