*-- Author : Stephen Burke 30/11/92
LOGICAL FUNCTION FFKILL(J1,J2)
*-----------------------------------------Updates 27/07/93-------
**: FFKILL 30907 SB. Changes to monitoring histograms.
**: FFKILL 30907 RP. Farm changes.
*-----------------------------------------Updates 03/03/93-------
**: FFKILL 30907 SB. Cuts can be turned off with negative values.
*-----------------------------------------Updates 30/11/92-------
**: FFKILL 30907 SB. New deck to remove bad tracks.
*-----------------------------------------Updates----------------
**********************************************************************
* *
* Decide whether to reject a track *
* *
**********************************************************************
DOUBLE PRECISION S1(5),C1(5,5),S2(5),C2(5,5),DTRAN(5,5),QMS(5,5)
&, DZ,RADLEN,CHI12,TEMP
*KEEP,FTHIST.
* indices of filter farm histos
COMMON/FTHIST/IHP(100)
*KEEP,FKNPL.
CHARACTER*5 CKDBG
PARAMETER (CKDBG='FKDBG')
PARAMETER (NPL=72)
LOGICAL LTRUE,LFIRST,LTRPL,LTRPLD
DOUBLE PRECISION TRUE,RTRUE,CHITRU,SPRO,CPRO,SFIL,CFIL
&, SSMT,CSMT,SSMTR,CSMTR,DPRO,CBPRO,QPRO,QGAIN
&, RPRO,CRPRO,RFIL,CRFIL,RSMT,CRSMT,CHIFIL,CHISMT
*
* Per-track values can go in H1WORK; note that LTRUE and LFIRST must
* be set at least per event.
*
* This is about 36k words long; the remaining common blocks are
* about 3.6k in total. Some of this could be in /H1WORK/, but the
* blocks would have to be reorganised.
*
COMMON /H1WORK/
* /FKPROJ/
& SPRO(5,NPL),CPRO(5,5,NPL)
* /FKFILT/
&, SFIL(5,NPL),CFIL(5,5,NPL)
* /FKSMTH/
&, SSMT(5,NPL),CSMT(5,5,NPL)
&, SSMTR(5,NPL),CSMTR(5,5,NPL)
* /FKINT/
&, DPRO(5,5,NPL),CBPRO(5,5,NPL),QPRO(5,5,NPL)
&, QGAIN(5,5,NPL),IAPROX,LFIRST
* /FKRSID/
&, RPRO(2,NPL),CRPRO(2,2,NPL),RFIL(2,NPL)
&, CRFIL(2,2,NPL),RSMT(2,NPL),CRSMT(2,2,NPL)
&, CHIFIL(NPL),CHISMT(NPL)
* /FKTRUE/
&, TRUE(5,NPL),RTRUE(5,NPL),CHITRU(NPL),LTRUE
* /FKDBG/
&, LTRPL(NPL),LTRPLD(NPL)
*KEEP,FFSTEE.
PARAMETER (NFT=72)
LOGICAL LRISV,LWMAP,LGRAPH,LTRUTH
REAL DSX,DSY,DSQOP,DSTTH,DSPHI,PMCUT,PCUT,CHPCUT
&, QOPMAX,THEMAX,RFTMIN,RFTMAX,CEMAX
COMMON /FFSTEE/ DSX,DSY,DSQOP,DSTTH,DSPHI
&, PMCUT,IDIAG,JPLRSV,LRISV,LWMAP(NFT),JPLMAX
&, IRP(NPL),JPLFT(NPL),JFTPL(NFT)
&, LUNGKS,IWKGKS,IDGKS,LUNHB,LUNGKM,IWKGKM,IDGKM
&, LGRAPH,LTRUTH,IHFF,IHFK,ISRJCT,PCUT,CHPCUT
&, QOPMAX,THEMAX,RFTMIN,RFTMAX,CEMAX
*KEEP,FFSCAL.
* Counters
PARAMETER (NSCAL=145)
COMMON /FFSCAL/ NPFAIL,NRFAIL,NXFAIL,NFFAIL,NMFAIL,NBFAIL,NTFAIL
&, NWFAIL,NNSPLT,NNMISS,NNMISP
&, NQFAIL,NAFAIL,NOFAIL,NIFAIL
&, NTRIN,NTROUT,NPRSEG(0:7,0:7),N23SEG(0:7,0:7)
*KEEP,FKCONS.
DOUBLE PRECISION ZPL,DZPL,RADL
COMMON /FKCONS/ ZPL(NPL),DZPL(NPL),RADL(NPL)
*KEEP,FKSMTH.
*KEND.
**********************************************************************
FFKILL = .TRUE.
* Momentum too small?
IF (QOPMAX.GE.0. .AND. ABS(SSMT(3,J1)).GT.QOPMAX) THEN
NQFAIL = NQFAIL + 1
RETURN
ENDIF
* Theta too big?
IF (THEMAX.GE.0.) THEN
TTMX = TAN(THEMAX)
ELSE
TTMX = 1.0E35
ENDIF
IF (SSMT(4,J1).GT.TTMX .OR. SSMT(4,J2).GT.TTMX) THEN
NAFAIL = NAFAIL + 1
RETURN
ENDIF
* Start/end outside tracker?
R1 = SQRT(SSMT(1,J1)**2 + SSMT(2,J1)**2)
R2 = SQRT(SSMT(1,J2)**2 + SSMT(2,J2)**2)
RMIN = MIN(R1,R2)
RMAX = MAX(R1,R2)
IF (RMIN.LT.RFTMIN .OR. RMAX.GT.RFTMAX) THEN
NOFAIL = NOFAIL + 1
RETURN
ENDIF
FFKILL = .FALSE.
IF (CEMAX.LT.0.) RETURN
* Swim from start to end ...
DZ = ZPL(J2) - ZPL(J1)
CALL FKTRAN(DZ,ZPL(J1),SSMT(1,J1),S1,DTRAN)
CALL FKMUL(CSMT(1,1,J1),DTRAN,C1)
* ... allow for multiple scattering - assume av. rad. length is 10 cm (!
RADLEN = 10.0D0
CALL FKSCAT(DZ,SSMT(1,J1),RADLEN,DTRAN,QMS)
CALL FKQADD(C1,QMS)
* ... find difference between end parameters and extrapolation ...
CALL FKDIFF(SSMT(1,J2),S1,S2)
CALL FKADD(CSMT(1,1,J2),C1,C2)
CALL DSINV(5,C2,5,IFAIL)
* ... and calculate chi-squared
IF (IFAIL.NE.0) RETURN
CHI12 = 0.0D0
DO 200 I1=1,5
TEMP = 0.0D0
DO 100 I2=1,5
TEMP = TEMP + C2(I1,I2)*S2(I2)
100 CONTINUE
CHI12 = CHI12 + S2(I1)*TEMP
200 CONTINUE
C CALL SHS(20,0,SNGL(CHI12))
IF (CHI12.LE.CEMAX) RETURN
NIFAIL = NIFAIL + 1
FFKILL = .TRUE.
RETURN
END
*