g.timestamp|Time Stamp||
+ !Drift Chamber Specific Variables
+
+ ||__tag__|__description__
+ B.dc.trackskipped|Bit 0 too busy, no tracking attempted
+ |Bit 1 tracking was done but reached soft max, skipped some groups
+ |Bit 2 tracking was done but reached hard max, skipped some groups
+ B.dc.ncall|Number of calls to THaMWDC::AllCombos()
+ B.dc.ngrp|Number of tracking groups considered
+ B.dc.estncall|Estimation of calls to THaMWDC::AllCombos()
+ B.dc.estngrp|Estimated number of groups
+ B.dc.cproctime|Amount of time spent in coarse processing (s)
+ B.dc.fproctime|Amount of time spent in fine processing (s)
+ ||
!MWDC Plane Variables
cortimeof|[[nWires]| -1e35 | |THaMWDCPlane::Decode| Drift time (nsec)
NumHitsof|[[nWires]| 0| |THaMWDCPlane::Decode| Number of hits on this wire
- reftimeof|[[nRefWires]| -2e35| |THaMWDCPlane::Decode| Time of reference channel (nsec)||
+ reftimeof|[[nRefWires]| -2e35| |THaMWDCPlane::Decode| Time of reference channel (nsec) chi2 |[[nWires]| 0| |THaMWDCGroup::CalcChi2 | Chi squared contribution in track cchi2 |[[nWires]| 0| |THaMWDCGroup::CalcChi2 | Chi squared contribution in coarse track||
!!Additional Plane Data
tr.py|tr.n|NA| | THaMWDC::FindVertices |Track momentum magnitude (GeV/c) times directional cosine in y direction in Lab Coordinates
tr.pz|tr.n|NA| | THaMWDC::FindVertices |Track momentum magnitude (GeV/c) times directional cosine in y direction in Lab Coordinates
- Btr.vx|tr.n|NA| | THaMWDC::FindVertices |Track vertex x coord in lab coordinates (meters)
+ tr.vx|tr.n|NA| | THaMWDC::FindVertices |Track vertex x coord in lab coordinates (meters)
tr.vy|tr.n|NA| |THaMWDC::FindVertices |Track vertex y coord in lab coordinates (meters)
tr.vz|tr.n|NA| | THaMWDC::FindVertices |Track vertex z coord in lab coordinates (meters)
These variables are identical to those above for B.tr.*, however, they are calculated using the coarse tracks. They are available when the SaveCoarseTracks() function is called in the THaBBe class.
+
+ See also:
+ [http://hallaweb.jlab.org/experiment/E02-013/offline/GlobalVars.pdf|BigBite Global and Drift Chamber Variables]
+ [http://hallaweb.jlab.org/experiment/E02-013/offline/BBextendedvars.txt|BigBite Tracking and extended Drift Chamber Variables]
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