*-- Author : I.O. Skillicorn
SUBROUTINE FTJN23(CF,IU,LLL,LL,RPC,RPS,PH,CH, ZI)
**: FTJN23 40000 IS. New linking code.
**----------------------------------------------------------------------
**: FTJN23 40000 SM. Fix selection of best link.
**----------------------------------------------------------------------
C JOIN MODULES
C AUTHOR I.O.SKILLICORN
C 21/5/91 REDUCE SIZE
C JOIN MODULES 2 AND 3
C
C
C
*KEEP,FRDIMS.
*KEEP,FH1WORK.
* Planar geometry
*
* Radial geometry
*
* Radial data...
*
* Planar Data
*
* Pointers into DIGI bank for IOS labelled hits
*
* Track segment data
*
* Fit data
*
*
*KEEP,FPTVTX.
**the common/VERTEX/ becomes /VERTVV/ (in analogy to /VERTFF/) on the
** 17/6/91, since it is in conflict with the VERTEX module (g.bernardi)
** (note that all these common names should start by F in this deck...)
*KEEP,FJNPAR.
*KEND.
*
*
* LOCAL ARRAYS...
C DIMENSION IP(36),SD(36),IPP(36,MAXTRK),SDD(36,MAXTRK)
C 'Centre' points of radial modules
*
*
C TO JOIN TWO MODULES
C STANDARD DEVIATIONS ** 2
C CUTS CHANGED FOR FAST FILTER - SECOND LINE FOR FAST FILTER
C SELECT TRACKS STR LINE PHI-Z ONLY
C IE THOSE FROM Z-AXIS
C REPLACEMENT VALUES H1SIM ****************************
C
C
*************************NEW CUTS******94 DATA**************
* CHT = 100.0
* RCUT=20.
* PCUT=0.04
* PSCUT=0.002
************************************************************
C
C =0 USE MANY TIMES =1 USE ONCE
C IU SET IN FTJN3
C *******************************
C REFIT PHI-Z WITH R-VALUES OF SEGMENTS
C FILL POINTS/DRIFT SIGN
C RECALCULATE PHI-Z SLOPE AND INTERCEPT
C R : ASSUMES LINEAR TO VERTEX
C PHI CONTINUOUS
CALL FTLFTW(XXX,YYY,WWT,IC,0,2,PS1,PZ1,D1,D2,D3,COV)
CALL FTLFTW(XXX,YYY,WWT,IC,0,2,PS2,PZ2,D1,D2,D3,COV)
C CHECK RECALCULATED PHI CONTINUOUS
*
*
CALL FTCHKH(PCOS, PHZ, PSIN, RI, 0, I, J, CHI)
C GOOD LINK
C******************************************12/10/88********************
C LL(LLL,3)=K
C SELECT BEST
C COMPARE BEST WITH REMAINDER
CCCCC IF(LL(K,3).EQ.LL(KB,3))GOTO130
C REMOVE LINK
C COMPARE FINISHED , MARK BEST SEGMENT USED
C RESET CHI WHEN COMPARE FINISHED
C
C
C
C SET USED FLAGS
CCCCCC IU(LL(I,3),3)=1
CALL SHS(2040,0,6.)
CALL SHS(2040,0,10.)
CALL SHS(2047,0,CH(I))
*------------------------------------------
C PRINT1000,LL(I,1),LL(I,2),LL(I,3)
*------------------------------------------
C
*
*
*
* NEW CODE 11/7/94
*
*
* LINK THREE RADIAL MODULES
*