Difference between revisions of "CCDB Tables CDC"
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Note - maybe this should be a JANA parameter? | Note - maybe this should be a JANA parameter? | ||
| − | '''CDC/MC/ | + | '''CDC/MC/drift_func_parms''' |
{|class="wikitable" | {|class="wikitable" | ||
| style="width:130px;" | CDC_DRIFT_A | | style="width:130px;" | CDC_DRIFT_A | ||
| Line 89: | Line 89: | ||
|} | |} | ||
| − | '''CDC/ | + | '''CDC/fit_parms''' |
{|class="wikitable" | {|class="wikitable" | ||
| style="width:130px;" | CDC_VARIANCE_A | | style="width:130px;" | CDC_VARIANCE_A | ||
| Line 99: | Line 99: | ||
| CDC_VARIANCE_C | | CDC_VARIANCE_C | ||
| | | | ||
| + | |} | ||
| + | |||
| + | '''CDC/cdc_parms''' | ||
| + | {|class="wikitable" | ||
| + | | style="width:70px;" | CDC_TDRIFT_SIGMA | ||
| + | | style="width:90px;" | 2.8181818181818e-9 | ||
| + | | style="width:400px;" | The error on the drift time in the CDC, used to gaussianly smear actual CDC hits. | ||
| + | |- | ||
| + | | CDC_TIME_WINDOW | ||
| + | | 1000.0E-9 | ||
| + | | The time window for which CDC hits are accumulated (in sec), used for background determination | ||
| + | |- | ||
| + | | CDC_PEDESTAL_SIGMA | ||
| + | | 0.00000006 | ||
| + | | The error in the energy deposition measurement in the CDC due to pedestal noise | ||
| + | |- | ||
| + | | CDC_DRIFT_SPEED | ||
| + | | 0.0055 | ||
| + | | CDC drift speed (unit?) | ||
| + | |- | ||
| + | | CDC_TWO_HIT_RESOL | ||
| + | | 25. | ||
| + | | time window for two hit resolution (in ns) | ||
| + | |- | ||
| + | | CDC_MAX_HITS | ||
| + | | 100 | ||
| + | | number of hit per readout channel | ||
| + | |- | ||
| + | | CDC_THRESH_KEV | ||
| + | | 1. | ||
| + | | threshold applied (in KeV) | ||
| + | |- | ||
| + | | CDC_STRAW_RADIUS | ||
| + | | 0.8 | ||
| + | | straw radius (in cm) | ||
|} | |} | ||
Revision as of 17:02, 26 March 2014
Contents
Variations
These are interesting variations related to the CDC:
- CDC_8mm_0T, CDC_9mm_0T, CDC_10mm_0T - versions of time-distance tables for different sized straws, no magnetic field. only 25 tables generated, with mixtures of 47/53 to 53/47 of Ar/CO2, in 0.25% increments.
Tables
CDC/timing_offsets
| 1-3522 | timing offset, t0 (ns) |
CDC/wire_gains
| 1-3522 | gain correction factor |
CDC/wire_alignment (3522 rows)
| dxu | upstream wire end displacement - X |
| dyu | upstream wire end displacement - Y |
| dxd | downstream wire end displacement - X |
| dyd | downstream wire end displacement - Y |
CDC/alignment
| CDC_ALIGN_UPSTREAM_DZ | upstream endplate z displacement |
| CDC_ALIGN_DOWNSTREAM_DZ | downstream endplate z displacement |
| CDC_SAG_RADIUS |
CDC/cdc_gas_tables, 41 rows
| 1-100 | time-to-distance lookup tables |
CDC/drift_parms
| CDC_DRIFT_FUNCTION | index for which row of CDC/cdc_gas_drift should be used |
Note - maybe this should be a JANA parameter?
CDC/MC/drift_func_parms
| CDC_DRIFT_A | Transverse drift function parameters |
| CDC_DRIFT_B | |
| CDC_DRIFT_C | |
| CDC_DRIFT_D | |
| CDC_DRIFT_A_L | Longitudinal drift function parameters |
| CDC_DRIFT_B_L | |
| CDC_DRIFT_C_L | |
| CDC_DRIFT_D_L |
CDC/fit_parms
| CDC_VARIANCE_A | Kalman filter parameters |
| CDC_VARIANCE_B | |
| CDC_VARIANCE_C |
CDC/cdc_parms
| CDC_TDRIFT_SIGMA | 2.8181818181818e-9 | The error on the drift time in the CDC, used to gaussianly smear actual CDC hits. |
| CDC_TIME_WINDOW | 1000.0E-9 | The time window for which CDC hits are accumulated (in sec), used for background determination |
| CDC_PEDESTAL_SIGMA | 0.00000006 | The error in the energy deposition measurement in the CDC due to pedestal noise |
| CDC_DRIFT_SPEED | 0.0055 | CDC drift speed (unit?) |
| CDC_TWO_HIT_RESOL | 25. | time window for two hit resolution (in ns) |
| CDC_MAX_HITS | 100 | number of hit per readout channel |
| CDC_THRESH_KEV | 1. | threshold applied (in KeV) |
| CDC_STRAW_RADIUS | 0.8 | straw radius (in cm) |
Deprecated
The following tables should not be used anymore:
- CDC/cdc_drift - parameterized time-to-distance function
