CALL: DRIFT_INFORMATION


q

  Contains, on return, the charge of the last particle that has
  been drifted.

time

  Contains, on return, the total drift time in microsec of the
  last drift line that has been computed.

particle

  Contains, on return, one of the following strings:

  ---------------------------------------------------------------
  particle          Meaning
  ---------------------------------------------------------------
  electron          An electron or a positron has been drifted
  ion               An ion with charge +1 or -1 has been drifted
  vacuum            An electron has been drifted in vacuum
  ---------------------------------------------------------------

istat

  The numeric status code has the following meaning:

  ---------------------------------------------------------------
  ISTAT Status code            Meaning
  ---------------------------------------------------------------
  -6                           Left the finite element mesh
  -5                           Entered a non-drift medium
  -4                           Hit a plane or a tube
  -3                           Abandoned
  -2                           Too many steps
  -1                           Left the drift area
  0                            Drift line not yet finished
  1 to MXWIRE                  Hit wire ISTAT
  MXWIRE+1 to 2*MXWIRE         Hit a replica of wire ISTAT-MXWIRE
  2*MXWIRE to 2*MXWIRE+MXSOLI  Hit solid ISTAT-2*MXWIRE
  ---------------------------------------------------------------

status

  Contains, on return, a string with the status information
  in words.

nsteps

  Contains, on return, the number of steps in the last drift
  line that has been computed.

Keyword index. Formatted on 10/11/98.