LXPHAR

Tracking of scintillation photons inside a volume, taking into account Rayleigh scattering and absorption. This routine is meant to be used to track a single scintillation photon inside a liquid xenon detector (it can be used for the real detector or for the prototype as well). Before reaching the surface of the detector the photon can be scattered or absorbed.

This routine is IDENTICAL to LXPHO1 except that one can give custom Rayleigh and Absorption length.

Usage:

CALL LXPHAR(ZIN, T0, ZOUT*, TOUT*, ALIVE*, ABSNEW, RAYNEW)

REAL      ZIN(6)     In input : Position and directory cosines of energy         P
                                      deposit. Z(4..6) unused                     l
REAL      T0         In input : Time of the energy deposit (in SECONDS!! <------ e
                                 meant to be filled with TOFG).                   a
REAL      ZOUT(6)    In output: Position of the exit point and directory         s
                                 cosines of the exiting photon.                   e
REAL      TOUT       In output : Time at which the photon exits the LIXE.
                                 (in NANOSECONDS!!!)    <------------------------ n
INTEGER   ALIVE      In output : -1 There has been some internal error          o
                                      (e.g. face not found)                       t
                                   0 The photon has been absorbed                e
                                  >0 the photon is still alive and underwent
                                      (ALIVE-1) Rayleigh scatterings.

REAL ABSNEW In input : Custom absorption length (in cm)
REAL RAYNEW In input : Custom Rayleigh scattering length (in cm)

Example of usage.

Library:

MEGLIX