! 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