*     hms_geometry.cmn
*
*     This include file has all the geometrical coefficients for the
*     HMS wire chambers.
*
*     d.f. geesaman        1 September 1993
*     modifed    dfg       14 Feb 1994
*                change HPLANE_PARAM(2,)  to hdc_zpos
*                change HPLANE_PARAM(3,)  to hdc_alpha_angle
*                change HPLANE_PARAM(4,)  to hdc_beta_angle
*                change HPLANE_PARAM(5,)  to hdc_gamma_angle
*                change HPLANE_PARAM(6,)  to hdc_pitch
*                change HPLANE_PARAM(7,)  to hdc_nrwire
*                change HPLANE_PARAM(8,)  to hdc_central_wire
*                change HPLANE_PARAM(9,)  to hdc_sigma
*                change HPLANE_LABEL      to hdc_plane_name
*                add     hdc_xcenter
*                        hdc_ycenter
* $Log: hms_geometry.cmn,v $
* Revision 1.3  1994/04/13 17:33:06  cdaq
* (DFG) Added dummy and dmytst
*
* Revision 1.2  1994/03/24  18:36:06  cdaq
* (DFG) Additional parameters
*
* Revision 1.1  1994/02/22  14:46:27  cdaq
* Initial revision
*                    
*
*
*
      real*4 hzchi,hzpsi       ! geometrical coefficients defining z-z0
      real*4 hxchi,hxpsi       ! x and y for each wire plane. 
      real*4 hychi,hypsi
*
      real*4 hz0               ! z coordinate of intersection of chamber with
                               ! z axis
      real*4 hpsi0,hchi0,hphi0 ! psi, chi and phi  coordinates  where a 
                               ! chamber normal passing through the origin
                               ! intersects the chamber. Used in stub fits
      
      real*4 hstubcoef         ! coefficents used in stub fits
                               ! note these contain one power of sigma

      real*4 htanbeta,hsinbeta,hcosbeta
*
      real*4 hxsp              ! coefficents used in space point fits.
      real*4 hysp
*
      real*8 hplane_coeff      ! coefficients used in final track fit
*
      integer*4 HNUM_PLANE_COEFF   ! number of plane track fit coefficients
      parameter (HNUM_PLANE_COEFF=9)
      integer*4 HNUM_RAY_PARAM     ! number of ray parameters
      parameter (HNUM_RAY_PARAM=4)
*
      common/HMS_GEOMETRY/
     &     hplane_coeff(HNUM_PLANE_COEFF,HMAX_NUM_DC_PLANES),
     &     hzpsi(HMAX_NUM_DC_PLANES),hzchi(HMAX_NUM_DC_PLANES),
     &     hxpsi(HMAX_NUM_DC_PLANES),hxchi(HMAX_NUM_DC_PLANES),
     &     hypsi(HMAX_NUM_DC_PLANES),hychi(HMAX_NUM_DC_PLANES),
     &     hz0(HMAX_NUM_DC_PLANES),hpsi0(HMAX_NUM_DC_PLANES),
     &     hchi0(HMAX_NUM_DC_PLANES),hphi0(HMAX_NUM_DC_PLANES),
     &     hstubcoef(HMAX_NUM_DC_PLANES,HNUM_RAY_PARAM),
     &     hxsp(HMAX_NUM_DC_PLANES),hysp(HMAX_NUM_DC_PLANES),
     &     htanbeta(HMAX_NUM_DC_PLANES),hsinbeta(HMAX_NUM_DC_PLANES),
     &     hcosbeta(HMAX_NUM_DC_PLANES)
*
      real*4    hdc_zpos
      real*4    hdc_alpha_angle
      real*4    hdc_beta_angle
      real*4    hdc_gamma_angle
      real*4    hdc_pitch
      real*4    hdc_nrwire
      real*4    hdc_central_wire
      real*4    hdc_sigma
      real*4    hdc_xcenter
      real*4    hdc_ycenter
      integer*4 hdc_chamber_planes
      character*16 hdc_plane_name
      common/HMS_PLANE_PARAMETERS/
     &     hdc_zpos(HMAX_NUM_DC_PLANES),
     &     hdc_alpha_angle(HMAX_NUM_DC_PLANES),
     &     hdc_beta_angle(HMAX_NUM_DC_PLANES),
     &     hdc_gamma_angle(HMAX_NUM_DC_PLANES),
     &     hdc_pitch(HMAX_NUM_DC_PLANES),
     &     hdc_central_wire(HMAX_NUM_DC_PLANES),
     &     hdc_nrwire(HMAX_NUM_DC_PLANES),
     &     hdc_sigma(HMAX_NUM_DC_PLANES),
     &     hdc_xcenter(HMAX_NUM_DC_PLANES),
     &     hdc_ycenter(HMAX_NUM_DC_PLANES),
     &     hdc_chamber_planes(HMAX_NUM_DC_PLANES),
     &     hdc_plane_name(HMAX_NUM_DC_PLANES) 
*
*
      real*4 hlocrayzt
      parameter (hlocrayzt=0.)
*
*
*     parameter file variables. Separate by type to make it easy to add
*     at the end
*     REAL*4
*
      real*4 hdrift_velocity        ! hms drift velocity in cm/ns
      real*4 hdc_tdc_time_per_channel ! hms drift chamber tdc calibration
      real*4 hdc_1_zpos
      real*4 hdc_2_zpos
      real*4 dummy
      common/HMS_CHAMBER_READOUT_REAL/
     &     hdrift_velocity,
     &     hdc_tdc_time_per_channel,
     &     hdc_1_zpos,
     &     hdc_2_zpos,
     &     dummy
*
*    INTEGER*4
      integer*4 hdc_wire_counting     ! readout numbering order
      integer*4 dmytst
*
      common/HMS_CHAMBER_READOUT_INT/
     &     hdc_wire_counting(HMAX_NUM_DC_PLANES),
     &     dmytst