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cafagna |
3.1 |
SUBROUTINE GPRSPE(ANGLEX,ANGLEY,BMAGNET,XMULT,YMULT,DXPOS,DYPOS) |
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************************************************************************** |
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* * |
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* Perform SPE resolution simulation for one hit * |
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* * |
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* * |
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* ANGLEX , angle between the X projected track and the axis * |
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* normal to silicon surface * |
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* * |
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* ANGLEY , angle between the Y projected track and the axis * |
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* normal to silicon surface * * |
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* * |
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* BMAGNET , value of magnetic field to be considered * |
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* * |
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* * |
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* SMULT , on exit is the strip multiplicity * |
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* * |
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* * |
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* DXPOS , on exit is the shift in X determination * |
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* * |
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* * |
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* DYPOS , on exit is the shift in Y determination * |
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* * |
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* * |
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* Called by: gpdspe * |
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* Author: Sergio Bottai, 25/05/05 4.40.38 * |
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* * |
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************************************************************************** |
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#include "gprspe.inc" |
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REAL BMAGNET(3),ANGLEX,ANGLEY,XMULT,YMULT,DXPOS,DYPOS |
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PARAMETER (RADDEG=57.2957795130823209) |
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REAL RVAL1(1),XRAN1 |
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INTEGER IANGLEX,IANGLEY |
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YMULT=1. |
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XMULT=1. |
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DXPOS=0. |
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DYPOS=0. |
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C |
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C FIND THE X ANGULAR BIN |
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C |
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IANGLEX=NBINANG |
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IF(VANG(12).LE.ANGLEX) GO TO 123 |
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DO II=1,NBINANG |
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IF((VANG(II).LE.ANGLEX).AND.(ANGLEX.LE.VANG(II+1))) THEN |
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IANGLEX=II |
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GO TO 123 |
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ENDIF |
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ENDDO |
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123 CONTINUE |
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C |
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C SAMPLE THE X MULTIPLICITY |
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C |
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CALL GRNDM(RVAL1,1) |
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XRAN1=RVAL1(1) |
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IF(XRAN1.LE.XMULT1_2(IANGLEX)) THEN |
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XMULT=2. |
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ELSE IF((XMULT1_2(IANGLEX).LT.XRAN1). |
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+ AND.(XRAN1.LE.XMULT3(IANGLEX)) ) THEN |
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XMULT=3. |
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ELSE |
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XMULT=4. |
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ENDIF |
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IF( (ANGLEX.LE.ANGLECUT.AND.XMULT.LE.2).OR. |
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+ (ANGLEX.GT.ANGLECUT.AND.XMULT.LE.3) ) THEN |
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C |
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C LMS CONDITION IS MET, SAMPLE THE X RESIDUALS |
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C |
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CALL GPRNHRAN(WX(1,IANGLEX),NDHIRES,-150.,0.3,DXPOS) |
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C |
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C TRANSFORM IN CM |
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C |
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DXPOS=DXPOS*1.E-4 |
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ELSE |
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C |
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C HMS CONDITION IS MET, SAMPLE THE X RESIDUALS |
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C |
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DXPOS = GPGAUS(0.)*XRMSHMS(IANGLEX) |
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DXPOS=DXPOS*1.E-4 |
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ENDIF |
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C |
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C FIND THE Y ANGULAR BIN |
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C |
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IANGLEY=NBINANG |
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IF(VANG(12).LE.ANGLEY) GO TO 124 |
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DO II=1,NBINANG |
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IF((VANG(II).LE.ANGLEY).AND.(ANGLEY.LE.VANG(II+1))) THEN |
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IANGLEY=II |
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GO TO 124 |
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ENDIF |
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ENDDO |
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124 CONTINUE |
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C |
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C SAMPLE THE Y RESIDUALS |
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C |
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CALL GPRNHRAN(WY(1,IANGLEY),NDHIRES,-150.,0.3,DYPOS) |
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C |
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C TRANSFORM IN CM |
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C |
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DYPOS=DYPOS*1.E-4 |
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RETURN |
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END |
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