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
!!!Extended Tracking Variables
||__tag__| __size__| __default__| __note__| __defining function__| __description__
- B.tr.p|tr.n|NA| |THaMWDC::FindVertices |Track momentum magnitude (GeV/c)
B.tr.px|tr.n|NA| | THaMWDC::FindVertices |Track momentum magnitude (GeV/c) times directional cosine in x direction in Lab Coordinates
B.tr.py|tr.n|NA| | THaMWDC::FindVertices |Track momentum magnitude (GeV/c) times directional cosine in y direction in Lab Coordinates
B.tr.pz|tr.n|NA| | THaMWDC::FindVertices |Track momentum magnitude (GeV/c) times directional cosine in y direction in Lab Coordinates
B.tr.vx|tr.n|NA| | THaMWDC::FindVertices |Track vertex x coord in lab coordinates (meters)
B.tr.vy|tr.n|NA| |THaMWDC::FindVertices |Track vertex y coord in lab coordinates (meters)
B.tr.vz|tr.n|NA| | THaMWDC::FindVertices |Track vertex z coord in lab coordinates (meters)
B.tr.fT.x|tr.n|NA| | THaMWDC::FindVertices |Front track (before magnet interaction) x coordinate at z=0 in target coordinates (meters)
B.tr.fT.y|tr.n|NA| | THaMWDC::FindVertices |Front track y coordinate at z=0 in target coordinates (meters)
B.tr.fT.xp|tr.n|NA| | THaMWDC::FindVertices |Front track slope dx/dz (tangent theta) in target coords
B.tr.fT.yp|tr.n|NA| | THaMWDC::FindVertices |Front track slope dy/dz (tangent phi) in target coords
B.tr.defang|tr.n|NA| |THaMWDC::FindVertices |Deflection angle (radians)
B.tr.beam.x|tr.n|NA| |THaMWDC::FindVertices |Track x coordinate at beam z in detector coords (meters)
B.tr.beam.y|tr.n|NA| |THaMWDC::FindVertices |Track y coordinate at beam z in detector coords (meters)
B.tr.beam.z|tr.n|NA| |THaMWDC::FindVertices |Track z coordinate at beam z in detector coords (meters)||
+ tr.p|tr.n|NA| |THaMWDC::FindVertices |Track momentum magnitude (GeV/c)
tr.px|tr.n|NA| | THaMWDC::FindVertices |Track momentum magnitude (GeV/c) times directional cosine in x direction in Lab Coordinates
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
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)
tr.fT.x|tr.n|NA| | THaMWDC::FindVertices |Front track (before magnet interaction) x coordinate at z=0 in target coordinates (meters)
tr.fT.y|tr.n|NA| | THaMWDC::FindVertices |Front track y coordinate at z=0 in target coordinates (meters)
tr.fT.xp|tr.n|NA| | THaMWDC::FindVertices |Front track slope dx/dz (tangent theta) in target coords
tr.fT.yp|tr.n|NA| | THaMWDC::FindVertices |Front track slope dy/dz (tangent phi) in target coords
tr.defang|tr.n|NA| |THaMWDC::FindVertices |Deflection angle (radians)
tr.beam.x|tr.n|NA| |THaMWDC::FindVertices |Track x coordinate at beam z in detector coords (meters)
tr.beam.y|tr.n|NA| |THaMWDC::FindVertices |Track y coordinate at beam z in detector coords (meters)
tr.beam.z|tr.n|NA| |THaMWDC::FindVertices |Track z coordinate at beam z in detector coords (meters)||
!!!Coarse Tracking Variables
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]
| ![[hide]](javascript:icntoggle('mod-mnu_application_menu','mo.png');)
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