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84737f5e | 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 | ||
fb17acd4 | 16 | /* $Header$ */ |
84737f5e | 17 | |
18 | // | |
19 | // Author: Andreas Morsch <andreas.morsch@cern.ch> | |
20 | // | |
21 | ||
22 | #include <TFile.h> | |
23 | #include <TSystem.h> | |
e2afb3b6 | 24 | |
84737f5e | 25 | #include "AliFieldMap.h" |
26 | #include "AliMagFMaps.h" | |
27 | ||
28 | ||
29 | ClassImp(AliMagFMaps) | |
30 | ||
e2afb3b6 | 31 | //_______________________________________________________________________ |
32 | AliMagFMaps::AliMagFMaps(): | |
33 | fSolenoid(0), | |
34 | fL3Option(0), | |
35 | fFieldRead(0) | |
36 | { | |
37 | // | |
38 | // Default constructor | |
39 | // | |
40 | fFieldMap[0] = fFieldMap[1] = fFieldMap[2] = 0; | |
41 | } | |
42 | ||
43 | //_______________________________________________________________________ | |
84737f5e | 44 | AliMagFMaps::AliMagFMaps(const char *name, const char *title, const Int_t integ, |
e2afb3b6 | 45 | const Float_t factor, const Float_t fmax, const Int_t map, |
46 | const Int_t l3): | |
47 | AliMagF(name,title,integ,factor,fmax), | |
48 | fSolenoid(0), | |
49 | fL3Option(l3), | |
50 | fFieldRead(0) | |
84737f5e | 51 | { |
52 | // | |
53 | // Standard constructor | |
54 | // | |
55 | fType = kConMesh; | |
56 | fFieldMap[0] = 0; | |
c2b548d6 | 57 | fMap = map; |
58 | fL3Option = l3; | |
59 | ||
60 | ReadField(); | |
61 | fFieldRead = 1; | |
e2afb3b6 | 62 | // |
63 | // Don't replicate field information in gAlice | |
7b6cddfa | 64 | for (Int_t i = 0; i < 3; i++) fFieldMap[i]->SetWriteEnable(0); |
e2afb3b6 | 65 | // |
84737f5e | 66 | } |
67 | ||
e2afb3b6 | 68 | //_______________________________________________________________________ |
69 | AliMagFMaps::AliMagFMaps(const AliMagFMaps &magf): | |
70 | AliMagF(magf), | |
71 | fSolenoid(0), | |
72 | fL3Option(0), | |
73 | fFieldRead(0) | |
84737f5e | 74 | { |
75 | // | |
76 | // Copy constructor | |
77 | // | |
78 | magf.Copy(*this); | |
79 | } | |
80 | ||
e2afb3b6 | 81 | //_______________________________________________________________________ |
84737f5e | 82 | AliMagFMaps::~AliMagFMaps() |
83 | { | |
e2afb3b6 | 84 | // |
85 | // Destructor | |
86 | // | |
87 | delete fFieldMap[0]; | |
88 | delete fFieldMap[1]; | |
89 | delete fFieldMap[2]; | |
84737f5e | 90 | } |
91 | ||
e2afb3b6 | 92 | //_______________________________________________________________________ |
c2b548d6 | 93 | void AliMagFMaps::ReadField() |
94 | { | |
e2afb3b6 | 95 | // Read Field Map from file |
96 | // | |
97 | // don't read twice | |
98 | // | |
99 | if (fFieldRead) return; | |
100 | fFieldRead = 1; | |
101 | // | |
102 | char* fname; | |
103 | TFile* file = 0; | |
104 | if (fMap == k2kG) { | |
c2b548d6 | 105 | if (fL3Option) { |
e2afb3b6 | 106 | fname = gSystem->ExpandPathName("$(ALICE_ROOT)/data/maps/L3B02.root"); |
107 | file = new TFile(fname); | |
108 | fFieldMap[0] = dynamic_cast<AliFieldMap*>(file->Get("L3B02")); | |
109 | file->Close(); | |
110 | delete file; | |
c2b548d6 | 111 | } |
112 | fname = gSystem->ExpandPathName("$(ALICE_ROOT)/data/maps/DipB02.root"); | |
113 | file = new TFile(fname); | |
e2afb3b6 | 114 | fFieldMap[1] = dynamic_cast<AliFieldMap*>(file->Get("DipB02")); |
c2b548d6 | 115 | file->Close(); |
116 | delete file;; | |
117 | ||
118 | fname = gSystem->ExpandPathName("$(ALICE_ROOT)/data/maps/ExtB02.root"); | |
119 | file = new TFile(fname); | |
e2afb3b6 | 120 | fFieldMap[2] = dynamic_cast<AliFieldMap*>(file->Get("ExtB02")); |
c2b548d6 | 121 | file->Close(); |
122 | delete file; | |
123 | fSolenoid = 2.; | |
e2afb3b6 | 124 | } else if (fMap == k4kG) { |
c2b548d6 | 125 | if (fL3Option) { |
e2afb3b6 | 126 | fname = gSystem->ExpandPathName("$(ALICE_ROOT)/data/maps/L3B04.root"); |
127 | file = new TFile(fname); | |
128 | fFieldMap[0] = dynamic_cast<AliFieldMap*>(file->Get("L3B04")); | |
129 | file->Close(); | |
130 | delete file; | |
c2b548d6 | 131 | } |
132 | ||
133 | fname = gSystem->ExpandPathName("$(ALICE_ROOT)/data/maps/DipB04.root"); | |
134 | file = new TFile(fname); | |
e2afb3b6 | 135 | fFieldMap[1] = dynamic_cast<AliFieldMap*>(file->Get("DipB04")); |
c2b548d6 | 136 | file->Close(); |
e2afb3b6 | 137 | delete file; |
c2b548d6 | 138 | |
139 | fname = gSystem->ExpandPathName("$(ALICE_ROOT)/data/maps/ExtB04.root"); | |
140 | file = new TFile(fname); | |
e2afb3b6 | 141 | fFieldMap[2] = dynamic_cast<AliFieldMap*>(file->Get("ExtB04")); |
c2b548d6 | 142 | file->Close(); |
143 | delete file; | |
144 | fSolenoid = 4.; | |
e2afb3b6 | 145 | } else if (fMap == k5kG) { |
c2b548d6 | 146 | if (fL3Option) { |
e2afb3b6 | 147 | fname = gSystem->ExpandPathName("$(ALICE_ROOT)/data/maps/L3B05.root"); |
148 | file = new TFile(fname); | |
149 | fFieldMap[0] = dynamic_cast<AliFieldMap*>(file->Get("L3B05")); | |
150 | file->Close(); | |
151 | delete file; | |
c2b548d6 | 152 | } |
153 | ||
154 | fname = gSystem->ExpandPathName("$(ALICE_ROOT)/data/maps/DipB05.root"); | |
155 | file = new TFile(fname); | |
e2afb3b6 | 156 | fFieldMap[1] = dynamic_cast<AliFieldMap*>(file->Get("DipB05")); |
c2b548d6 | 157 | file->Close(); |
e2afb3b6 | 158 | delete file; |
c2b548d6 | 159 | |
160 | fname = gSystem->ExpandPathName("$(ALICE_ROOT)/data/maps/ExtB05.root"); | |
161 | file = new TFile(fname); | |
e2afb3b6 | 162 | fFieldMap[2] = dynamic_cast<AliFieldMap*>(file->Get("ExtB05")); |
c2b548d6 | 163 | file->Close(); |
164 | delete file; | |
165 | ||
166 | fSolenoid = 5.; | |
e2afb3b6 | 167 | } |
168 | ||
169 | if (!fL3Option) { | |
170 | // | |
171 | // Dummy L3 map | |
c2b548d6 | 172 | fFieldMap[0] = new AliFieldMap(); |
173 | fFieldMap[0] -> SetLimits(-800., 800., -800., 800., -700., 700.); | |
e2afb3b6 | 174 | } |
c2b548d6 | 175 | } |
176 | ||
e2afb3b6 | 177 | //_______________________________________________________________________ |
84737f5e | 178 | Float_t AliMagFMaps::SolenoidField() const |
179 | { | |
e2afb3b6 | 180 | // |
181 | // Returns max. L3 (solenoid) field strength | |
182 | // according to field map setting | |
183 | // | |
184 | return fSolenoid; | |
84737f5e | 185 | } |
186 | ||
e2afb3b6 | 187 | //_______________________________________________________________________ |
84737f5e | 188 | void AliMagFMaps::Field(Float_t *x, Float_t *b) |
189 | { | |
190 | // | |
191 | // Method to calculate the magnetic field | |
192 | // | |
84737f5e | 193 | // --- find the position in the grid --- |
194 | ||
ee4f31cd | 195 | if (!fFieldRead) ReadField(); |
e2afb3b6 | 196 | |
84737f5e | 197 | b[0]=b[1]=b[2]=0; |
198 | AliFieldMap* map = 0; | |
84737f5e | 199 | if (fFieldMap[0]->Inside(x[0], x[1], x[2])) { |
e2afb3b6 | 200 | map = fFieldMap[0]; |
201 | if (!fL3Option) { | |
202 | // | |
203 | // Constant L3 field, if this option was selected | |
204 | // | |
84737f5e | 205 | b[2] = fSolenoid; |
206 | return; | |
e2afb3b6 | 207 | } |
84737f5e | 208 | } else if (fFieldMap[1]->Inside(x[0], x[1], x[2])) { |
e2afb3b6 | 209 | map = fFieldMap[1]; |
84737f5e | 210 | } else if (fFieldMap[2]->Inside(x[0], x[1], x[2])) { |
e2afb3b6 | 211 | map = fFieldMap[2]; |
84737f5e | 212 | } |
213 | ||
214 | if(map){ | |
e2afb3b6 | 215 | map->Field(x,b); |
84737f5e | 216 | } else { |
e2afb3b6 | 217 | //This is the ZDC part |
218 | Float_t rad2=x[0]*x[0]+x[1]*x[1]; | |
219 | if(x[2]>kCORBEG2 && x[2]<kCOREND2){ | |
84737f5e | 220 | if(rad2<kCOR2RA2){ |
e2afb3b6 | 221 | b[0] = kFCORN2; |
84737f5e | 222 | } |
e2afb3b6 | 223 | } |
224 | else if(x[2]>kZ1BEG && x[2]<kZ1END){ | |
84737f5e | 225 | if(rad2<kZ1RA2){ |
e2afb3b6 | 226 | b[0] = -kG1*x[1]; |
227 | b[1] = -kG1*x[0]; | |
84737f5e | 228 | } |
e2afb3b6 | 229 | } |
230 | else if(x[2]>kZ2BEG && x[2]<kZ2END){ | |
84737f5e | 231 | if(rad2<kZ2RA2){ |
e2afb3b6 | 232 | b[0] = kG1*x[1]; |
233 | b[1] = kG1*x[0]; | |
84737f5e | 234 | } |
e2afb3b6 | 235 | } |
236 | else if(x[2]>kZ3BEG && x[2]<kZ3END){ | |
84737f5e | 237 | if(rad2<kZ3RA2){ |
e2afb3b6 | 238 | b[0] = kG1*x[1]; |
239 | b[1] = kG1*x[0]; | |
84737f5e | 240 | } |
e2afb3b6 | 241 | } |
242 | else if(x[2]>kZ4BEG && x[2]<kZ4END){ | |
84737f5e | 243 | if(rad2<kZ4RA2){ |
e2afb3b6 | 244 | b[0] = -kG1*x[1]; |
245 | b[1] = -kG1*x[0]; | |
84737f5e | 246 | } |
e2afb3b6 | 247 | } |
248 | else if(x[2]>kD1BEG && x[2]<kD1END){ | |
84737f5e | 249 | if(rad2<kD1RA2){ |
e2afb3b6 | 250 | b[1] = -kFDIP; |
84737f5e | 251 | } |
e2afb3b6 | 252 | } |
253 | else if(x[2]>kD2BEG && x[2]<kD2END){ | |
84737f5e | 254 | if(((x[0]-kXCEN1D2)*(x[0]-kXCEN1D2)+(x[1]-kYCEN1D2)*(x[1]-kYCEN1D2))<kD2RA2 |
255 | || ((x[0]-kXCEN2D2)*(x[0]-kXCEN2D2)+(x[1]-kYCEN2D2)*(x[1]-kYCEN2D2))<kD2RA2){ | |
e2afb3b6 | 256 | b[1] = kFDIP; |
84737f5e | 257 | } |
e2afb3b6 | 258 | } |
84737f5e | 259 | } |
260 | if(fFactor!=1) { | |
e2afb3b6 | 261 | b[0]*=fFactor; |
262 | b[1]*=fFactor; | |
263 | b[2]*=fFactor; | |
84737f5e | 264 | } |
265 | } | |
266 | ||
e2afb3b6 | 267 | //_______________________________________________________________________ |
84737f5e | 268 | void AliMagFMaps::Copy(AliMagFMaps & /* magf */) const |
269 | { | |
270 | // | |
271 | // Copy *this onto magf -- Not implemented | |
272 | // | |
273 | Fatal("Copy","Not implemented!\n"); | |
274 | } | |
275 | ||
e2afb3b6 | 276 | //_______________________________________________________________________ |
ee4f31cd | 277 | void AliMagFMaps::Streamer(TBuffer &R__b) |
278 | { | |
e2afb3b6 | 279 | // Stream an object of class AliMagFMaps. |
280 | if (R__b.IsReading()) { | |
281 | AliMagFMaps::Class()->ReadBuffer(R__b, this); | |
282 | fFieldRead = 0; | |
283 | } else { | |
284 | AliMagFMaps::Class()->WriteBuffer(R__b, this); | |
285 | } | |
ee4f31cd | 286 | } |