TGEO: Detector Geometry Control

                                 Titles: TGEO
                                 ============
 
Contact:    N. West,  Oxford.
 
Revision History:-
================
 
2.08    N. West       First Version.
2.09    N. West       Add list of elements and debug flags.
3.01    N. West       Add probe sphere radius.
4.02    N.Jelley      Add partial fill media
        N. West       Add KTGEO_MAX_CER_GE_ERR.

 
Titles Files
------------
 
geometry.dat
 
 
Verification
------------
 
 
Description
-----------
 
This is the Detector Geometry control bank.
 
 
Bank Number:  1
 
 
Data Words
-----------
 
        Fixed length Database Header.  See titles_dbhdr.html
 
       I = integer, F = floating point.
 
 
 
           KTGEO...        Mnemonic bank address relative to start of
                           user data.
 
   1    I  _PARTIAL_FILL   Partial fill flag: = 0 disabled, = 1 enabled.
   2    F  _D2O_LEVEL      Partial fill D2O level.
   3    F  _H2O_LEVEL      Partial fill H2O level.
   4    I  _DBG_FLGS       Set of 1-bit debug flags.  Meaning if set:-
                             Bit 0:  GE_NEXT: Deliberately stop short for 50%
                                     of all jumps.  This explores problems that
                                     only appear when taking very short steps.
                             Bit 1:  GE_NEXT: Perform consistency check.

                             N.B.:  Bit 0 and Bit 1 are mutually exclusive, do not
                                    set both at the same time.

   5    F  _PROBE_SPHERE_RADIUS
                           If >0., insert spherical probe surface.  Crossing
                           track produces null boundary vertex. Useful for
                           studies away from any physical boundary.
   6    I  _PARTIAL_FILL_MEDIA
                           Physical media above the surface
                           = 0 (default) treat as air (=800)
                           = 200 = heavy water for partial salt fill
   7    I  _MAX_CER_GE_ERR Max number of suppressed Cerenkov photon tracking
                           errors before killing event.
   8..  I                  Spare slots for future use.
  11..  I  _DE_LIST        List of detector elements.  The geometry
                           initialisation involves the loading of a GEDP and
                           GEDS for every entry in this list.