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fe4da5cc | 1 | * |
2 | * $Id$ | |
3 | * | |
4 | * $Log$ | |
5 | * Revision 1.1.1.1 1995/10/24 10:21:33 cernlib | |
6 | * Geant | |
7 | * | |
8 | * | |
9 | #include "geant321/pilot.h" | |
10 | *CMZ : 3.21/02 29/03/94 15.41.23 by S.Giani | |
11 | *-- Author : | |
12 | SUBROUTINE GRANGI | |
13 | C. | |
14 | C. ****************************************************************** | |
15 | C. * * | |
16 | C. * Calculates the stopping range , in cm. * | |
17 | C. * (i.e. the maximum step due to the continuous energy loss) * | |
18 | C. * The stopping range is the integral of the inverse of the * | |
19 | C. * DE/DX table. * | |
20 | C. * There are 4 tables : electron,positron,muon,proton * | |
21 | C. * * | |
22 | C. * ==>Called by : GPHYSI * | |
23 | C. * Author M.Maire ********* * | |
24 | C. * * | |
25 | C. ****************************************************************** | |
26 | C. | |
27 | #include "geant321/gcbank.inc" | |
28 | #include "geant321/gctrak.inc" | |
29 | #include "geant321/gcjloc.inc" | |
30 | #include "geant321/gcmulo.inc" | |
31 | #include "geant321/gconsp.inc" | |
32 | #include "geant321/gcmate.inc" | |
33 | #if !defined(CERNLIB_SINGLE) | |
34 | DOUBLE PRECISION RANGMU, RANGEL, RANGPO, RANGPR | |
35 | DOUBLE PRECISION DDXEL1, DDXMU1, DDXPR1, DDXPO1 | |
36 | DOUBLE PRECISION DDXEL2, DDXMU2, DDXPR2, DDXPO2 | |
37 | DOUBLE PRECISION DDXEL3, DDXMU3, DDXPR3, DDXPO3 | |
38 | DOUBLE PRECISION HFACT, ONE, TEN, HLOG10, HFACT2, HFACT3 | |
39 | #endif | |
40 | PARAMETER (ONE=1,TEN=10) | |
41 | * | |
42 | HLOG10 = LOG(TEN) | |
43 | * | |
44 | JRANEL = LQ(JMA-15) | |
45 | JRANPO = LQ(JMA-15)+NEK1 | |
46 | JRANMU = LQ(JMA-16) | |
47 | JRANPR = LQ(JMA-16)+NEK1 | |
48 | * | |
49 | IF(Z.LT.1) THEN | |
50 | DO 10 IEKBIN=1,NEK1 | |
51 | Q(JRANEL+IEKBIN)=BIG | |
52 | Q(JRANPO+IEKBIN)=BIG | |
53 | Q(JRANMU+IEKBIN)=BIG | |
54 | Q(JRANPR+IEKBIN)=BIG | |
55 | 10 CONTINUE | |
56 | * | |
57 | ELSE | |
58 | SMALL = 1./BIG | |
59 | JLOSEL = LQ(JMA-1) | |
60 | JLOSPO = LQ(JMA-1)+NEK1 | |
61 | JLOSMU = LQ(JMA-2) | |
62 | JLOSPR = LQ(JMA-3) | |
63 | * | |
64 | JWSPEL = -1 | |
65 | JWSPPO = NEKBIN -1 | |
66 | JWSPMU = NEKBIN*2-1 | |
67 | JWSPPR = NEKBIN*3-1 | |
68 | * | |
69 | RANGPO = 0. | |
70 | RANGMU = 0. | |
71 | RANGEL = 0. | |
72 | RANGPR = 0. | |
73 | * | |
74 | Q(JRANEL+1)=0. | |
75 | Q(JRANPO+1)=0. | |
76 | Q(JRANMU+1)=0. | |
77 | Q(JRANPR+1)=0. | |
78 | * | |
79 | HFACT = ONE/(6.*GEKA) | |
80 | * | |
81 | DDXEL3 = ELOW(1)*HLOG10/MAX(Q(JLOSEL+1),SMALL) | |
82 | DDXMU3 = ELOW(1)*HLOG10/MAX(Q(JLOSMU+1),SMALL) | |
83 | DDXPR3 = ELOW(1)*HLOG10/MAX(Q(JLOSPR+1),SMALL) | |
84 | DDXPO3 = ELOW(1)*HLOG10/MAX(Q(JLOSPO+1),SMALL) | |
85 | * | |
86 | HFACT2 = HLOG10*TEN**(EKBIN(1)+0.5/GEKA) | |
87 | * | |
88 | DO 20 IEKBIN=2,NEK1 | |
89 | * | |
90 | HFACT3 = ELOW(IEKBIN)*HLOG10 | |
91 | * | |
92 | * *** Electrons | |
93 | * | |
94 | DDXEL1 = DDXEL3 | |
95 | DDXEL3 = HFACT3/MAX(Q(JLOSEL+IEKBIN),SMALL) | |
96 | DDXEL2 = HFACT2/MAX(WS(JWSPEL+IEKBIN),SMALL) | |
97 | RANGEL = RANGEL+DDXEL1+4.*DDXEL2+DDXEL3 | |
98 | Q(JRANEL+IEKBIN)=RANGEL*HFACT | |
99 | * | |
100 | * *** Positons | |
101 | * | |
102 | DDXPO1 = DDXPO3 | |
103 | DDXPO3 = HFACT3/MAX(Q(JLOSPO+IEKBIN),SMALL) | |
104 | DDXPO2 = HFACT2/MAX(WS(JWSPPO+IEKBIN),SMALL) | |
105 | RANGPO = RANGPO+DDXPO1+4.*DDXPO2+DDXPO3 | |
106 | Q(JRANPO+IEKBIN)=RANGPO*HFACT | |
107 | * | |
108 | * *** Muons | |
109 | * | |
110 | DDXMU1 = DDXMU3 | |
111 | DDXMU3 = HFACT3/MAX(Q(JLOSMU+IEKBIN),SMALL) | |
112 | DDXMU2 = HFACT2/MAX(WS(JWSPMU+IEKBIN),SMALL) | |
113 | RANGMU = RANGMU+DDXMU1+4.*DDXMU2+DDXMU3 | |
114 | Q(JRANMU+IEKBIN)=RANGMU*HFACT | |
115 | * | |
116 | * *** Protons | |
117 | * | |
118 | DDXPR1 = DDXPR3 | |
119 | DDXPR3 = HFACT3/MAX(Q(JLOSPR+IEKBIN),SMALL) | |
120 | DDXPR2 = HFACT2/MAX(WS(JWSPPR+IEKBIN),SMALL) | |
121 | RANGPR = RANGPR+DDXPR1+4.*DDXPR2+DDXPR3 | |
122 | Q(JRANPR+IEKBIN)=RANGPR*HFACT | |
123 | * | |
124 | HFACT2 = HLOG10*TEN**(EKBIN(1)+(IEKBIN-0.5)/GEKA) | |
125 | * | |
126 | 20 CONTINUE | |
127 | ENDIF | |
128 | * | |
129 | END |