/[PAMELA software]/DarthVader/TrackerLevel2/src/F77/mini.f
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revision 1.4 by pam-fi, Tue Nov 7 15:55:11 2006 UTC revision 1.9 by pam-fi, Tue Nov 21 17:12:26 2006 UTC
# Line 36  c--------------------------------------- Line 36  c---------------------------------------
36  c      DATA XGOOD,YGOOD/nplanes*1.,nplanes*1./ !planes to be used in the tracking  c      DATA XGOOD,YGOOD/nplanes*1.,nplanes*1./ !planes to be used in the tracking
37    
38        DATA STEPAL/5*1.d-7/      !alpha vector step        DATA STEPAL/5*1.d-7/      !alpha vector step
39        DATA ISTEPMAX/120/        !maximum number of steps in the chi^2 minimization        DATA ISTEPMAX/100/        !maximum number of steps in the chi^2 minimization
40        DATA TOLL/1.d-8/          !tolerance in reaching the next plane during        DATA TOLL/1.d-8/          !tolerance in reaching the next plane during
41  *                               !the tracking procedure  *                               !the tracking procedure
42        DATA STEPMAX/100./        !maximum number of steps in the trackin gprocess        DATA STEPMAX/100./        !maximum number of steps in the trackin gprocess
43    
44        DATA ALMAX/dinf,dinf,1.,dinf,dinf/ !limits on alpha vector components  c      DATA ALMAX/dinf,dinf,1.,dinf,dinf/ !limits on alpha vector components
45        DATA ALMIN/-dinf,-dinf,-1.,-dinf,-dinf/ !"  c      DATA ALMIN/-dinf,-dinf,-1.,-dinf,-dinf/ !"
46          DATA ALMAX/dinf,dinf,dinf,dinf,dinf/ !limits on alpha vector components
47          DATA ALMIN/-dinf,-dinf,-dinf,-dinf,-dinf/ !"
48    
49        DIMENSION DAL(5)                    !increment of vector alfa        DIMENSION DAL(5)                    !increment of vector alfa
50        DIMENSION CHI2DD_R(4,4),CHI2D_R(4) !hessiano e gradiente di chi2        DIMENSION CHI2DD_R(4,4),CHI2D_R(4) !hessiano e gradiente di chi2
# Line 120  c$$$      DELETA2 = 0.016/0.3/0.4/0.4451 Line 122  c$$$      DELETA2 = 0.016/0.3/0.4/0.4451
122        ISTEP=0                   !num. steps to minimize chi^2        ISTEP=0                   !num. steps to minimize chi^2
123        JFAIL=0                   !error flag        JFAIL=0                   !error flag
124    
125  c     elena--------        if(TRKDEBUG) print*,'guess: ',al
       CHI2   = 0  
 c     elena--------  
126        if(TRKDEBUG) print*,'mini2: step ',istep,chi2,1./AL(5)        if(TRKDEBUG) print*,'mini2: step ',istep,chi2,1./AL(5)
127    
128  *      *    
# Line 247  c     elena-------- Line 247  c     elena--------
247  *     check number of steps:  *     check number of steps:
248  *------------------------------------------------------------*  *------------------------------------------------------------*
249        IF(ISTEP.ge.ISTEPMAX) then        IF(ISTEP.ge.ISTEPMAX) then
250           IFAIL=1  c$$$         IFAIL=1
251           if(TRKVERBOSE)  c$$$         if(TRKVERBOSE)
252       $        PRINT *,'*** WARNING in mini *** ISTEP.GT.ISTEPMAX=',  c$$$     $        PRINT *,'*** WARNING in mini *** ISTEP.GT.ISTEPMAX=',
253       $        ISTEPMAX  c$$$     $        ISTEPMAX
254           goto 11           goto 11
255        endif        endif
256  *------------------------------------------------------------*  *------------------------------------------------------------*
# Line 467  c$$$      ENDDO Line 467  c$$$      ENDDO
467       +        +((XV(I)-XM(I))**2+(YV(I)-YM(I))**2)/RESY(i)**2       +        +((XV(I)-XM(I))**2+(YV(I)-YM(I))**2)/RESY(i)**2
468       +                                       *( (1-XGOOD(I))*YGOOD(I) )       +                                       *( (1-XGOOD(I))*YGOOD(I) )
469        ENDDO        ENDDO
470    c      print*,'CHISQ ',chi2
471  *     ------------------------------------------------  *     ------------------------------------------------
472  *      *    
473  *     calculation of derivatives (dX/dAL_fa and dY/dAL_fa)      *     calculation of derivatives (dX/dAL_fa and dY/dAL_fa)    
# Line 641  c       Line 642  c      
642        VOUT(6)=-1.*DSQRT(1.-AL_P(3)**2)        VOUT(6)=-1.*DSQRT(1.-AL_P(3)**2)
643        IF(AL_P(5).NE.0.) VOUT(7)=DABS(1./AL_P(5))        IF(AL_P(5).NE.0.) VOUT(7)=DABS(1./AL_P(5))
644        IF(AL_P(5).EQ.0.) VOUT(7)=1.E8        IF(AL_P(5).EQ.0.) VOUT(7)=1.E8
645    
646    c$$$      print*,'POSXY ',vout
647    
648        DO I=1,nplanes        DO I=1,nplanes
649           step=vout(3)-zv(i)           step=vout(3)-zv(i)
650   10      DO J=1,7   10      DO J=1,7
# Line 795  c      IMPLICIT DOUBLE PRECISION (A-H,O- Line 799  c      IMPLICIT DOUBLE PRECISION (A-H,O-
799              ZP(NP)=ZM(I)              ZP(NP)=ZM(I)
800           ENDIF           ENDIF
801        ENDDO        ENDDO
802          IFLAG=0                   !no debug mode
803        CALL TRICIRCLE(NP,XP,ZP,AP,RP,CHI,XC,ZC,RADIUS,IFLAG)        CALL TRICIRCLE(NP,XP,ZP,AP,RP,CHI,XC,ZC,RADIUS,IFLAG)
804  c      print*,' circle: ',XC,ZC,RADIUS,' --- ',CHI  c      print*,' circle: ',XC,ZC,RADIUS,' --- ',CHI,IFLAG
805        IF(IFLAG.NE.0)GOTO 10 !straigth fit        IF(IFLAG.NE.0)GOTO 10 !straigth fit
806          if(CHI.gt.100)GOTO 10 !straigth fit
807        ARG = RADIUS**2-(ZINI-ZC)**2        ARG = RADIUS**2-(ZINI-ZC)**2
808        IF(ARG.LT.0)GOTO 10       !straigth fit        IF(ARG.LT.0)GOTO 10       !straigth fit
809        DC = SQRT(ARG)              DC = SQRT(ARG)      
# Line 806  c      print*,' circle: ',XC,ZC,RADIUS,' Line 812  c      print*,' circle: ',XC,ZC,RADIUS,'
812        AX = -(ZINI-ZC)/DC        AX = -(ZINI-ZC)/DC
813        DEF=100./(RADIUS*0.3*0.43)        DEF=100./(RADIUS*0.3*0.43)
814        IF(XC.GT.0)DEF=-DEF        IF(XC.GT.0)DEF=-DEF
815          
816          IF(ABS(X0).GT.30)THEN
817             PRINT*,'STRANGE GUESS: XC,ZC,R ',XC,ZC,RADIUS
818         $     ,' - CHI ',CHI,' - X0,AX,DEF ',X0,AX,DEF
819             GOTO 10       !straigth fit
820          ENDIF
821        GOTO 20                   !guess is ok        GOTO 20                   !guess is ok
822    
823  *     ----------------------------------------  *     ----------------------------------------
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