! BANKname BANKtype ! Comments TABLE FRLC ! Local coordinates and data for hits ! in Radial Drift Chambers. ! TEMPORARY. Parallel to FRRE bank. ! ATTributes: ! ----------- !COL ATT-name FMT Min Max ! Comments ! 1 ICLNUM I ! Drift cell number 2 DRIFT F ! Abs drift distance (cms) 3 ERRDRF F ! Error in drift distance (cms) 4 RADIUS F ! Radius of impact point (cms) 5 ERRRAD F ! Error in Radius (cms) 6 ISGNW I ! Bit 0: 0=+wedge 1=-wedge ! Bit 1: 0=OK QT 1=dubious radius ! Bit 2: 0=OK 1=dubious drift ! Bit 3: 0=OK 1=timing pulse? ! Bit 7: 0=OK 1=on no account 7 QPLUS F ! Charge integral + end of wire 8 QMINUS F ! Charge integral - end of wire 9 DRIFTP F ! Drift distance for +drift tracks 10 DRIFTM F ! Drift distance for -drift tracks ! ! NOTES: ! The drift distances are NOT signed. ! ! DRIFT is the drift distance to be used in conjunction with ! the EFFECTIVE stagger when it is not known which side of the ! wire plane the track went. There are then 2 possible space ! points given by: ! EFFECTIVE stagger + DRIFT ! and EFFECTIVE stagger - DRIFT ! ! DRIFTP and DRIFTM should be used when the drift sign is known: ! Geometric Stagger + DRIFTP ! or Geometric Stagger - DRIFTM ! ! >>>> Exception: If drift time comes out negative after ! subtraction of T0, then DRIFTs will be negative. ! They should however be used as described above. ! ! 1) ISGNW serves to indicate which of the two connected radial ! wedges most likely contained the hit as well as error info. ! Note that MOD(ISGNW,2) always gives 0 for +wedge, 1 for -wedge ! 2) If the integration interval is short or close preceding ! hit, or saturation the radial coordinate error is degraded ! and Bit 1 in ISGNW is set. ! 3) If there was a close preceding hit or long leading edge, ! the drift resolution is degraded and Bit 2 in ISGNW set. ! 4) Possible timing pulses are flagged by setting Bit 3 in ISGNW. ! 5) Bit 7 is set if the pulse had insane drift times or zero ! measured charge. Such pulses should never be used. ! 6 So: ! ISGNW <=1 => Pulse was O.K. Even errors might mean ! something. ! ISGNW > 1 => Pulse was problematic but can be used. ! Errors have been inflated in ad hoc way. ! But ISGNW > 127 => Don't even think about using this hit. END TABLE