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| 2 | SUBROUTINE GUKINE
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| 3 | *
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| 4 | * Generates Kinematics for primary track
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| 5 | *
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| 6 | * Data card Kine : Itype Ekine x0 y0 z0 ux uy uz rbeam
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| 7 | *
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| 8 | * rbeam : size of the random beam extension in fraction of 0.5*calorYZ
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| 9 | *
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| 10 | #include "geant321/gcbank.inc"
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| 11 | #include "geant321/gcflag.inc"
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| 12 | #include "geant321/gckine.inc"
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| 13 | #include "calor.inc"
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| 14 | #include "histo.inc"
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| 15 | *
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| 16 | DIMENSION VERTEX(3),PLAB(3)
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| 17 | dimension rndm(2)
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| 18 | *
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| 19 | data aMeV /1.e-3/
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| 20 | *
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| 21 | * *** set/reset default kinematic
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| 22 | IF ((IKINE.LT.0).or.(abs(PKINE(2)).GT.0.5*worldX)) THEN
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| 23 | IKINE = ABS(IKINE)
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| 24 | PKINE(2) = -0.5*worldX
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| 25 | PKINE(3) = 0.
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| 26 | PKINE(4) = 0.
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| 27 | PKINE(5) = 1.
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| 28 | PKINE(6) = 0.
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| 29 | PKINE(7) = 0.
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| 30 | ENDIF
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| 31 | *
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| 32 | * random in YZ ?
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| 33 | if ((pkine(8).lt.0.).or.(pkine(8).gt.1.)) pkine(8) = 0.
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| 34 | rbeam = pkine(8)*0.5*calorYZ
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| 35 | call GRNDM (rndm,2)
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| 36 | *
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| 37 | VERTEX(1) = PKINE(2)
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| 38 | VERTEX(2) = PKINE(3) + (2*rndm(1)-1.)*rbeam
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| 39 | VERTEX(3) = PKINE(4) + (2*rndm(2)-1.)*rbeam
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| 40 | *
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| 41 | CALL GSVERT(VERTEX,0,0,0,0,NVERT)
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| 42 | *
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| 43 | *
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| 44 | JPA = LQ(JPART-IKINE)
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| 45 | XMASS = Q(JPA+7)
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| 46 | PMOM = SQRT(PKINE(1)*(PKINE(1)+2*XMASS))
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| 47 | PLAB(1) = PMOM*PKINE(5)
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| 48 | PLAB(2) = PMOM*PKINE(6)
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| 49 | PLAB(3) = PMOM*PKINE(7)
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| 50 | *
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| 51 | CALL GSKINE(PLAB,IKINE,NVERT,0,0,NT)
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| 52 | *
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| 53 | * *** Kinematics debug
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| 54 | IF (IEVENT.EQ.1.OR.IDEBUG.NE.0) CALL GPRINT('KINE',0)
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| 55 | *
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| 56 | END
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