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b0f5e3fc | 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 | ||
b0f5e3fc | 16 | #include <iostream.h> |
17 | #include <TMath.h> | |
11ad066f | 18 | #include <TString.h> |
b0f5e3fc | 19 | #include "AliITSetfSDD.h" |
20 | ||
21 | //////////////////////////////////////////////////////////////////////// | |
22 | // Version: 0 | |
23 | // Written by Piergiorgio Cerello | |
24 | // November 23 1999 | |
25 | // | |
b0f5e3fc | 26 | //_____________________________________________________________________________ |
b669392e | 27 | |
28 | ||
b0f5e3fc | 29 | ClassImp(AliITSetfSDD) |
30 | ||
31 | Int_t ppower(Int_t b, Int_t e) { | |
e8189707 | 32 | Int_t power = 1; |
33 | for(Int_t i=0; i<e; i++) power *= b; | |
b0f5e3fc | 34 | return power; |
35 | } | |
36 | ||
11ad066f | 37 | AliITSetfSDD::AliITSetfSDD(Double_t timestep, Int_t amplif) |
b0f5e3fc | 38 | { |
39 | // sampling time in ns | |
e8189707 | 40 | |
11ad066f | 41 | fTimeDelay = 53.5; |
42 | if(amplif == 2) fTimeDelay = 35.5; | |
e8189707 | 43 | fSamplingTime = timestep; |
44 | ||
b0f5e3fc | 45 | fT0 = 0.; |
b669392e | 46 | fDf = ppower(10,9)/(kMaxNofSamples*fSamplingTime); |
11ad066f | 47 | fA0 = 16500.; // AL: 16500.; // TB: 24000.; // 26000.; // 24000.; // 18000.; |
b0f5e3fc | 48 | |
11ad066f | 49 | if(amplif == 2) fA0 = 24000.; |
ce3c6683 | 50 | // cout << "fA0: " << fA0 << endl; |
51 | // cout << "fTimeDelay: " << fTimeDelay << endl; | |
e8189707 | 52 | Int_t i,j; |
b669392e | 53 | for(i=0; i<kMaxNofPoles; i++) { |
e8189707 | 54 | fZeroM[i] = 0.; |
55 | fZeroR[i] = 0.; | |
56 | fZeroI[i] = 0.; | |
57 | fPoleM[i] = 0.; | |
58 | fPoleR[i] = 0.; | |
59 | fPoleI[i] = 0.; | |
b0f5e3fc | 60 | } |
11ad066f | 61 | // Alice |
62 | ||
e8189707 | 63 | fPoleM[0] = 1.; |
11ad066f | 64 | fPoleR[0] = -4140000.; // AL: -4140000.; // TB: -3000000.; // -3750000.; // -3500000; // -3000000.; |
65 | fPoleI[0] = 0.; // AL: 0.; // TB: 4000000.; // 3750000.; // 3500000.; // 3000000.; | |
66 | if(amplif == 2) { | |
67 | fPoleR[0] = -3000000.; | |
68 | fPoleI[0] = 4000000.; | |
69 | } | |
e8189707 | 70 | fPoleM[1] = 1.; |
11ad066f | 71 | fPoleR[1] = fPoleR[0]; |
72 | fPoleI[1] = -fPoleI[0]; | |
b0f5e3fc | 73 | |
11ad066f | 74 | // Compute Transfer Function |
b0f5e3fc | 75 | |
76 | Double_t PI = acos(-1.); | |
b669392e | 77 | for(i=0; i<=kMaxNofSamples/2; i++) { |
b0f5e3fc | 78 | Double_t frequency = fDf*i; |
79 | Double_t VM = fA0; | |
80 | Double_t VA = 0.; | |
b669392e | 81 | for(Int_t k=0; k<kMaxNofPoles; k++) { |
e8189707 | 82 | if(fZeroM[k]) { |
83 | Double_t VZR = -fZeroR[k]; | |
84 | Double_t VZI = frequency - fZeroI[k]; | |
b0f5e3fc | 85 | Double_t VZM = TMath::Sqrt(VZR*VZR+VZI*VZI); |
86 | Double_t VZA = TMath::ATan2(VZI,VZR); | |
87 | // cout << "VZM: " << VZM << ", VZA: " << VZA << endl; | |
88 | // cout << "VZR: " << VZR << ", VZI: " << VZI << endl; | |
e8189707 | 89 | for(j=1; j<= (Int_t) fZeroM[k]; j++) { |
b0f5e3fc | 90 | VM *= VZM; |
91 | VA += VZA; | |
92 | if(VA >= PI) VA -= (2.*PI); | |
93 | if(VA <= -PI) VA += (2.*PI); | |
94 | //cout << "VM: " << VM << ", VA: " << VA << endl; | |
95 | } | |
96 | } | |
97 | ||
e8189707 | 98 | if(fPoleM[k]) { |
99 | Double_t VPR = -fPoleR[k]; | |
100 | Double_t VPI = frequency - fPoleI[k]; | |
b0f5e3fc | 101 | Double_t VPM = TMath::Sqrt(VPR*VPR+VPI*VPI); |
102 | Double_t VPA = TMath::ATan2(VPI,VPR); | |
103 | //cout << "VPM: " << VPM << ", VPA: " << VPA << endl; | |
104 | //cout << "VPR: " << VPR << ", VPI: " << VPI << endl; | |
e8189707 | 105 | for(j=1; j<= (Int_t) fPoleM[k]; j++) { |
b0f5e3fc | 106 | VM /= VPM; |
107 | VA -= VPA; | |
108 | if(VA >= PI) VA -= (2.*PI); | |
109 | if(VA <= -PI) VA += (2.*PI); | |
110 | //cout << "VM: " << VM << ", VA: " << VA << endl; | |
111 | } | |
112 | } | |
113 | Double_t VR = VM*cos(VA); | |
114 | Double_t VI = VM*sin(VA); | |
115 | //cout << "VM: " << VM << ", VA: " << VA << endl; | |
116 | //cout << "VR: " << VR << ", VI: " << VI << endl; | |
e8189707 | 117 | fTfR[i] = VR*ppower(10,9); |
118 | fTfI[i] = VI*ppower(10,9); | |
119 | //cout << "fTfR[" << i << "] = " << fTfR[i] << endl; | |
120 | //cout << "fTfI[" << i << "] = " << fTfI[i] << endl; | |
b0f5e3fc | 121 | if(i) { |
b669392e | 122 | fTfR[kMaxNofSamples-i] = fTfR[i]; |
123 | fTfI[kMaxNofSamples-i] = -fTfI[i]; | |
b0f5e3fc | 124 | } |
125 | } | |
126 | } | |
127 | ||
128 | // Compute Fourier Weights | |
129 | ||
b669392e | 130 | for(i=0; i<=kMaxNofSamples/2; i++) { |
131 | fWR[i] = cos(-2.*PI*i/kMaxNofSamples); | |
132 | fWI[i] = sin(-2.*PI*i/kMaxNofSamples); | |
b0f5e3fc | 133 | if(i) { |
b669392e | 134 | fWR[kMaxNofSamples-i] = fWR[i]; |
135 | fWI[kMaxNofSamples-i] = -fWI[i]; | |
b0f5e3fc | 136 | } |
137 | } | |
138 | ||
139 | } | |
140 | ||
e8189707 | 141 | void AliITSetfSDD::PrintElectronics() |
b0f5e3fc | 142 | { |
11ad066f | 143 | cout << "Time Delay " << fTimeDelay << endl; |
b0f5e3fc | 144 | cout << "Sampling Time " << fSamplingTime << endl; |
b669392e | 145 | cout << "Number of Time Samples " << kMaxNofSamples << endl; |
b0f5e3fc | 146 | cout << "fT0 " << fT0 << endl; |
147 | cout << "fDf " << fDf << endl; | |
148 | cout << "fA0 " << fA0 << endl; | |
149 | ||
150 | cout << "Zero's and Pole's" << endl; | |
e8189707 | 151 | cout << "fZeroM " << endl; |
152 | Int_t i; | |
b669392e | 153 | for(i=0; i<kMaxNofPoles; i++) cout << fZeroM[i] << endl; |
b0f5e3fc | 154 | cout << "fZero_R " << endl; |
b669392e | 155 | for(i=0; i<kMaxNofPoles; i++) cout << fZeroR[i] << endl; |
e8189707 | 156 | cout << "fZeroI " << endl; |
b669392e | 157 | for(i=0; i<kMaxNofPoles; i++) cout << fZeroI[i] << endl; |
e8189707 | 158 | cout << "fPoleM " << endl; |
b669392e | 159 | for(i=0; i<kMaxNofPoles; i++) cout << fPoleM[i] << endl; |
e8189707 | 160 | cout << "fPoleR " << endl; |
b669392e | 161 | for(i=0; i<kMaxNofPoles; i++) cout << fPoleR[i] << endl; |
e8189707 | 162 | cout << "fPoleI " << endl; |
b669392e | 163 | for(i=0; i<kMaxNofPoles; i++) cout << fPoleI[i] << endl; |
b0f5e3fc | 164 | |
165 | cout << "Transfer function" << endl; | |
166 | cout << "Real Part" << endl; | |
b669392e | 167 | for(i=0; i<kMaxNofSamples; i++) cout << fTfR[i] << endl; |
b0f5e3fc | 168 | cout << "Imaginary Part " << endl; |
b669392e | 169 | for(i=0; i<kMaxNofSamples; i++) cout << fTfI[i] << endl; |
b0f5e3fc | 170 | |
171 | cout << "Fourier Weights" << endl; | |
172 | cout << "Real Part" << endl; | |
b669392e | 173 | for(i=0; i<kMaxNofSamples; i++) cout << fWR[i] << endl; |
b0f5e3fc | 174 | cout << "Imaginary Part " << endl; |
b669392e | 175 | for(i=0; i<kMaxNofSamples; i++) cout << fWI[i] << endl; |
b0f5e3fc | 176 | } |
177 | ||
178 | ||
179 | ||
180 | ||
181 | ||
182 | ||
183 | ||
184 |