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4c039060 | 1 | /************************************************************************** |
2 | * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * | |
3 | * * | |
4 | * Author: The ALICE Off-line Project. * | |
5 | * Contributors are mentioned in the code where appropriate. * | |
6 | * * | |
7 | * Permission to use, copy, modify and distribute this software and its * | |
8 | * documentation strictly for non-commercial purposes is hereby granted * | |
9 | * without fee, provided that the above copyright notice appears in all * | |
10 | * copies and that both the copyright notice and this permission notice * | |
11 | * appear in the supporting documentation. The authors make no claims * | |
12 | * about the suitability of this software for any purpose. It is * | |
13 | * provided "as is" without express or implied warranty. * | |
14 | **************************************************************************/ | |
15 | ||
16 | /* | |
17 | $Log$ | |
d81db581 | 18 | Revision 1.2 2000/06/15 07:58:48 morsch |
19 | Code from MUON-dev joined | |
20 | ||
a9e2aefa | 21 | Revision 1.1.2.1 2000/06/09 21:38:15 morsch |
22 | AliMUONSegmentationV04 code from AliMUONSegResV04.cxx | |
23 | ||
4c039060 | 24 | */ |
25 | ||
a897a37a | 26 | ///////////////////////////////////////////////////// |
27 | // Segmentation and Response classes version 04 // | |
28 | ///////////////////////////////////////////////////// | |
29 | ||
a897a37a | 30 | |
a9e2aefa | 31 | #include "AliMUONSegmentationV04.h" |
32 | #include <TMath.h> | |
a897a37a | 33 | |
34 | //___________________________________________ | |
a9e2aefa | 35 | ClassImp(AliMUONSegmentationV04) |
a897a37a | 36 | |
37 | ||
d81db581 | 38 | void AliMUONSegmentationV04::Init(Int_t chamber) |
a897a37a | 39 | { |
a9e2aefa | 40 | printf("\n Initialise segmentation v04 \n"); |
a897a37a | 41 | // |
42 | // Fill the arrays fCx (x-contour) and fNpxS (ix-contour) for each sector | |
43 | // These arrays help in converting from real to pad co-ordinates and | |
44 | // vice versa | |
a9e2aefa | 45 | // |
46 | // Segmentation is defined by rectangular modules approximating | |
47 | // concentric circles as shown below | |
a897a37a | 48 | // |
49 | // PCB module size in cm | |
a9e2aefa | 50 | const Float_t kDxPCB=40, kDyPCB=40; |
a897a37a | 51 | // PCB distribution (7 rows with 1+3 segmentation regions) |
52 | const Int_t kpcb[7][4] = {{1, 2, 2, 2}, | |
53 | {0, 3, 2, 2}, | |
54 | {0, 2, 2, 2}, | |
55 | {0, 0, 3, 3}, | |
56 | {0, 0, 2, 3}, | |
57 | {0, 0, 0, 4}, | |
58 | {0, 0, 0, 3}}; | |
59 | ||
60 | ||
61 | // | |
62 | // 3 3 3 | 3 3 3 | |
63 | // 3 3 3 3 | 3 3 3 3 | |
64 | // 3 3 3 2 2 | 2 2 3 3 3 | |
65 | // 3 3 3 2 2 2 | 2 2 2 3 3 3 | |
66 | // 3 3 2 2 1 1 | 1 1 2 2 3 3 | |
67 | // 3 3 2 2 1 1 1 | 1 1 1 2 2 3 3 | |
68 | // 3 3 2 2 1 1 0 | 0 1 1 2 2 3 3 | |
69 | // ------------------------------ | |
70 | // 3 3 2 2 1 1 0 | 0 1 1 2 2 3 3 | |
71 | // 3 3 2 2 1 1 1 | 1 1 1 2 2 3 3 | |
72 | // 3 3 2 2 1 1 | 1 1 2 2 3 3 | |
73 | // 3 3 3 2 2 2 | 2 2 2 3 3 3 | |
74 | // 3 3 3 2 2 | 2 2 3 3 3 | |
75 | // 3 3 3 3 | 3 3 3 3 | |
76 | // 3 3 3 | 3 3 3 | |
77 | // | |
78 | // number of pad rows per PCB | |
79 | // | |
a9e2aefa | 80 | Int_t nPyPCB=Int_t(kDyPCB/fDpy); |
a897a37a | 81 | // |
82 | // maximum number of pad rows | |
a9e2aefa | 83 | fNpy=7*nPyPCB; |
a897a37a | 84 | // |
85 | // Calculate padsize along x | |
86 | fDpxD[fNsec-1]=fDpx; | |
87 | if (fNsec > 1) { | |
88 | for (Int_t i=fNsec-2; i>=0; i--){ | |
89 | fDpxD[i]=fDpxD[fNsec-1]/fNDiv[i]; | |
a9e2aefa | 90 | printf("\n test ---dx %d %f \n",i,fDpxD[i]); |
a897a37a | 91 | } |
92 | } | |
93 | // | |
94 | // fill the arrays defining the pad segmentation boundaries | |
95 | // | |
96 | // loop over pcb module rows | |
97 | Int_t iy=0; | |
98 | for (Int_t irow=0; irow<7; irow++) { | |
99 | // | |
100 | // loop over pads along the anode wires | |
a9e2aefa | 101 | for (Int_t i=0; i<=nPyPCB; i++) { |
a897a37a | 102 | // iy counts the padrow |
103 | iy++; | |
104 | // Loop over sectors (isec=0 is the dead space surounding the beam pipe) | |
105 | for (Int_t isec=0; isec<4; isec++) { | |
106 | if (isec==0) { | |
a9e2aefa | 107 | fNpxS[0][iy]=kpcb[irow][0]*Int_t(kDxPCB/fDpxD[0]); |
108 | fCx[0][iy]=kpcb[irow][0]*kDxPCB; | |
a897a37a | 109 | } else { |
110 | fNpxS[isec][iy]=fNpxS[isec-1][iy] | |
a9e2aefa | 111 | +kpcb[irow][isec]*Int_t(kDxPCB/fDpxD[isec]); |
a897a37a | 112 | |
113 | fCx[isec][iy]=fCx[isec-1][iy] | |
a9e2aefa | 114 | +kpcb[irow][isec]*kDxPCB; |
a897a37a | 115 | } |
116 | } // sectors | |
117 | } // pad raws in module | |
118 | } // PCB rows | |
a897a37a | 119 | } |
120 | ||
a9e2aefa | 121 | void AliMUONSegmentationV04::GiveTestPoints(Int_t &n, Float_t *x, Float_t *y) |
a897a37a | 122 | { |
a9e2aefa | 123 | // Returns test point on the pad plane. |
124 | // Used during determination of the segmoid correction of the COG-method | |
a897a37a | 125 | n=3; |
126 | x[0]=(fCx[1][1]+fCx[0][1])/2/TMath::Sqrt(2.); | |
127 | y[0]=x[0]; | |
128 | x[1]=(fCx[2][1]+fCx[1][1])/2/TMath::Sqrt(2.); | |
129 | y[1]=x[1]; | |
130 | x[2]=(fCx[3][1]+fCx[2][1])/2/TMath::Sqrt(2.); | |
131 | y[2]=x[2]; | |
a897a37a | 132 | } |
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