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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 | ||
16 | /* | |
17 | $Log$ | |
e2afb3b6 | 18 | Revision 1.8 2002/10/14 14:57:32 hristov |
19 | Merging the VirtualMC branch to the main development branch (HEAD) | |
20 | ||
b9d0a01d | 21 | Revision 1.5.6.2 2002/08/01 15:35:30 alibrary |
22 | Updating VirtualMC | |
23 | ||
24 | Revision 1.7 2002/08/01 12:34:48 morsch | |
25 | Initialize maps in first call to Field() after streaming in. | |
26 | ||
ee4f31cd | 27 | Revision 1.6 2002/04/11 11:17:48 morsch |
28 | ReadField() used in Constructor. | |
29 | ||
c2b548d6 | 30 | Revision 1.5 2002/02/26 09:48:14 morsch |
31 | Extra argument in constructor for l3 map choice. | |
32 | ||
356f9803 | 33 | Revision 1.4 2002/02/22 14:00:20 morsch |
34 | Protection against replication of fieldmap data in gAlice. | |
35 | ||
7b6cddfa | 36 | Revision 1.3 2002/02/21 09:23:41 morsch |
37 | Create dummy field map for L3 in case no detailed map is needed. | |
38 | ||
7a1ab119 | 39 | Revision 1.2 2002/02/19 16:14:35 morsch |
40 | Reading of 0.2 T solenoid field map enabled. | |
41 | ||
bfd6c805 | 42 | Revision 1.1 2002/02/14 11:41:28 morsch |
43 | Magnetic field map for ALICE for L3+muon spectrometer stored in 3 seperate | |
44 | root files. | |
45 | ||
84737f5e | 46 | */ |
47 | ||
48 | // | |
49 | // Author: Andreas Morsch <andreas.morsch@cern.ch> | |
50 | // | |
51 | ||
52 | #include <TFile.h> | |
53 | #include <TSystem.h> | |
e2afb3b6 | 54 | |
84737f5e | 55 | #include "AliFieldMap.h" |
56 | #include "AliMagFMaps.h" | |
57 | ||
58 | ||
59 | ClassImp(AliMagFMaps) | |
60 | ||
e2afb3b6 | 61 | //_______________________________________________________________________ |
62 | AliMagFMaps::AliMagFMaps(): | |
63 | fSolenoid(0), | |
64 | fL3Option(0), | |
65 | fFieldRead(0) | |
66 | { | |
67 | // | |
68 | // Default constructor | |
69 | // | |
70 | fFieldMap[0] = fFieldMap[1] = fFieldMap[2] = 0; | |
71 | } | |
72 | ||
73 | //_______________________________________________________________________ | |
84737f5e | 74 | AliMagFMaps::AliMagFMaps(const char *name, const char *title, const Int_t integ, |
e2afb3b6 | 75 | const Float_t factor, const Float_t fmax, const Int_t map, |
76 | const Int_t l3): | |
77 | AliMagF(name,title,integ,factor,fmax), | |
78 | fSolenoid(0), | |
79 | fL3Option(l3), | |
80 | fFieldRead(0) | |
84737f5e | 81 | { |
82 | // | |
83 | // Standard constructor | |
84 | // | |
85 | fType = kConMesh; | |
86 | fFieldMap[0] = 0; | |
c2b548d6 | 87 | fMap = map; |
88 | fL3Option = l3; | |
89 | ||
90 | ReadField(); | |
91 | fFieldRead = 1; | |
e2afb3b6 | 92 | // |
93 | // Don't replicate field information in gAlice | |
7b6cddfa | 94 | for (Int_t i = 0; i < 3; i++) fFieldMap[i]->SetWriteEnable(0); |
e2afb3b6 | 95 | // |
84737f5e | 96 | } |
97 | ||
e2afb3b6 | 98 | //_______________________________________________________________________ |
99 | AliMagFMaps::AliMagFMaps(const AliMagFMaps &magf): | |
100 | AliMagF(magf), | |
101 | fSolenoid(0), | |
102 | fL3Option(0), | |
103 | fFieldRead(0) | |
84737f5e | 104 | { |
105 | // | |
106 | // Copy constructor | |
107 | // | |
108 | magf.Copy(*this); | |
109 | } | |
110 | ||
e2afb3b6 | 111 | //_______________________________________________________________________ |
84737f5e | 112 | AliMagFMaps::~AliMagFMaps() |
113 | { | |
e2afb3b6 | 114 | // |
115 | // Destructor | |
116 | // | |
117 | delete fFieldMap[0]; | |
118 | delete fFieldMap[1]; | |
119 | delete fFieldMap[2]; | |
84737f5e | 120 | } |
121 | ||
e2afb3b6 | 122 | //_______________________________________________________________________ |
c2b548d6 | 123 | void AliMagFMaps::ReadField() |
124 | { | |
e2afb3b6 | 125 | // Read Field Map from file |
126 | // | |
127 | // don't read twice | |
128 | // | |
129 | if (fFieldRead) return; | |
130 | fFieldRead = 1; | |
131 | // | |
132 | char* fname; | |
133 | TFile* file = 0; | |
134 | if (fMap == k2kG) { | |
c2b548d6 | 135 | if (fL3Option) { |
e2afb3b6 | 136 | fname = gSystem->ExpandPathName("$(ALICE_ROOT)/data/maps/L3B02.root"); |
137 | file = new TFile(fname); | |
138 | fFieldMap[0] = dynamic_cast<AliFieldMap*>(file->Get("L3B02")); | |
139 | file->Close(); | |
140 | delete file; | |
c2b548d6 | 141 | } |
142 | fname = gSystem->ExpandPathName("$(ALICE_ROOT)/data/maps/DipB02.root"); | |
143 | file = new TFile(fname); | |
e2afb3b6 | 144 | fFieldMap[1] = dynamic_cast<AliFieldMap*>(file->Get("DipB02")); |
c2b548d6 | 145 | file->Close(); |
146 | delete file;; | |
147 | ||
148 | fname = gSystem->ExpandPathName("$(ALICE_ROOT)/data/maps/ExtB02.root"); | |
149 | file = new TFile(fname); | |
e2afb3b6 | 150 | fFieldMap[2] = dynamic_cast<AliFieldMap*>(file->Get("ExtB02")); |
c2b548d6 | 151 | file->Close(); |
152 | delete file; | |
153 | fSolenoid = 2.; | |
e2afb3b6 | 154 | } else if (fMap == k4kG) { |
c2b548d6 | 155 | if (fL3Option) { |
e2afb3b6 | 156 | fname = gSystem->ExpandPathName("$(ALICE_ROOT)/data/maps/L3B04.root"); |
157 | file = new TFile(fname); | |
158 | fFieldMap[0] = dynamic_cast<AliFieldMap*>(file->Get("L3B04")); | |
159 | file->Close(); | |
160 | delete file; | |
c2b548d6 | 161 | } |
162 | ||
163 | fname = gSystem->ExpandPathName("$(ALICE_ROOT)/data/maps/DipB04.root"); | |
164 | file = new TFile(fname); | |
e2afb3b6 | 165 | fFieldMap[1] = dynamic_cast<AliFieldMap*>(file->Get("DipB04")); |
c2b548d6 | 166 | file->Close(); |
e2afb3b6 | 167 | delete file; |
c2b548d6 | 168 | |
169 | fname = gSystem->ExpandPathName("$(ALICE_ROOT)/data/maps/ExtB04.root"); | |
170 | file = new TFile(fname); | |
e2afb3b6 | 171 | fFieldMap[2] = dynamic_cast<AliFieldMap*>(file->Get("ExtB04")); |
c2b548d6 | 172 | file->Close(); |
173 | delete file; | |
174 | fSolenoid = 4.; | |
e2afb3b6 | 175 | } else if (fMap == k5kG) { |
c2b548d6 | 176 | if (fL3Option) { |
e2afb3b6 | 177 | fname = gSystem->ExpandPathName("$(ALICE_ROOT)/data/maps/L3B05.root"); |
178 | file = new TFile(fname); | |
179 | fFieldMap[0] = dynamic_cast<AliFieldMap*>(file->Get("L3B05")); | |
180 | file->Close(); | |
181 | delete file; | |
c2b548d6 | 182 | } |
183 | ||
184 | fname = gSystem->ExpandPathName("$(ALICE_ROOT)/data/maps/DipB05.root"); | |
185 | file = new TFile(fname); | |
e2afb3b6 | 186 | fFieldMap[1] = dynamic_cast<AliFieldMap*>(file->Get("DipB05")); |
c2b548d6 | 187 | file->Close(); |
e2afb3b6 | 188 | delete file; |
c2b548d6 | 189 | |
190 | fname = gSystem->ExpandPathName("$(ALICE_ROOT)/data/maps/ExtB05.root"); | |
191 | file = new TFile(fname); | |
e2afb3b6 | 192 | fFieldMap[2] = dynamic_cast<AliFieldMap*>(file->Get("ExtB05")); |
c2b548d6 | 193 | file->Close(); |
194 | delete file; | |
195 | ||
196 | fSolenoid = 5.; | |
e2afb3b6 | 197 | } |
198 | ||
199 | if (!fL3Option) { | |
200 | // | |
201 | // Dummy L3 map | |
c2b548d6 | 202 | fFieldMap[0] = new AliFieldMap(); |
203 | fFieldMap[0] -> SetLimits(-800., 800., -800., 800., -700., 700.); | |
e2afb3b6 | 204 | } |
c2b548d6 | 205 | } |
206 | ||
e2afb3b6 | 207 | //_______________________________________________________________________ |
84737f5e | 208 | Float_t AliMagFMaps::SolenoidField() const |
209 | { | |
e2afb3b6 | 210 | // |
211 | // Returns max. L3 (solenoid) field strength | |
212 | // according to field map setting | |
213 | // | |
214 | return fSolenoid; | |
84737f5e | 215 | } |
216 | ||
e2afb3b6 | 217 | //_______________________________________________________________________ |
84737f5e | 218 | void AliMagFMaps::Field(Float_t *x, Float_t *b) |
219 | { | |
220 | // | |
221 | // Method to calculate the magnetic field | |
222 | // | |
84737f5e | 223 | // --- find the position in the grid --- |
224 | ||
ee4f31cd | 225 | if (!fFieldRead) ReadField(); |
e2afb3b6 | 226 | |
84737f5e | 227 | b[0]=b[1]=b[2]=0; |
228 | AliFieldMap* map = 0; | |
84737f5e | 229 | if (fFieldMap[0]->Inside(x[0], x[1], x[2])) { |
e2afb3b6 | 230 | map = fFieldMap[0]; |
231 | if (!fL3Option) { | |
232 | // | |
233 | // Constant L3 field, if this option was selected | |
234 | // | |
84737f5e | 235 | b[2] = fSolenoid; |
236 | return; | |
e2afb3b6 | 237 | } |
84737f5e | 238 | } else if (fFieldMap[1]->Inside(x[0], x[1], x[2])) { |
e2afb3b6 | 239 | map = fFieldMap[1]; |
84737f5e | 240 | } else if (fFieldMap[2]->Inside(x[0], x[1], x[2])) { |
e2afb3b6 | 241 | map = fFieldMap[2]; |
84737f5e | 242 | } |
243 | ||
244 | if(map){ | |
e2afb3b6 | 245 | map->Field(x,b); |
84737f5e | 246 | } else { |
e2afb3b6 | 247 | //This is the ZDC part |
248 | Float_t rad2=x[0]*x[0]+x[1]*x[1]; | |
249 | if(x[2]>kCORBEG2 && x[2]<kCOREND2){ | |
84737f5e | 250 | if(rad2<kCOR2RA2){ |
e2afb3b6 | 251 | b[0] = kFCORN2; |
84737f5e | 252 | } |
e2afb3b6 | 253 | } |
254 | else if(x[2]>kZ1BEG && x[2]<kZ1END){ | |
84737f5e | 255 | if(rad2<kZ1RA2){ |
e2afb3b6 | 256 | b[0] = -kG1*x[1]; |
257 | b[1] = -kG1*x[0]; | |
84737f5e | 258 | } |
e2afb3b6 | 259 | } |
260 | else if(x[2]>kZ2BEG && x[2]<kZ2END){ | |
84737f5e | 261 | if(rad2<kZ2RA2){ |
e2afb3b6 | 262 | b[0] = kG1*x[1]; |
263 | b[1] = kG1*x[0]; | |
84737f5e | 264 | } |
e2afb3b6 | 265 | } |
266 | else if(x[2]>kZ3BEG && x[2]<kZ3END){ | |
84737f5e | 267 | if(rad2<kZ3RA2){ |
e2afb3b6 | 268 | b[0] = kG1*x[1]; |
269 | b[1] = kG1*x[0]; | |
84737f5e | 270 | } |
e2afb3b6 | 271 | } |
272 | else if(x[2]>kZ4BEG && x[2]<kZ4END){ | |
84737f5e | 273 | if(rad2<kZ4RA2){ |
e2afb3b6 | 274 | b[0] = -kG1*x[1]; |
275 | b[1] = -kG1*x[0]; | |
84737f5e | 276 | } |
e2afb3b6 | 277 | } |
278 | else if(x[2]>kD1BEG && x[2]<kD1END){ | |
84737f5e | 279 | if(rad2<kD1RA2){ |
e2afb3b6 | 280 | b[1] = -kFDIP; |
84737f5e | 281 | } |
e2afb3b6 | 282 | } |
283 | else if(x[2]>kD2BEG && x[2]<kD2END){ | |
84737f5e | 284 | if(((x[0]-kXCEN1D2)*(x[0]-kXCEN1D2)+(x[1]-kYCEN1D2)*(x[1]-kYCEN1D2))<kD2RA2 |
285 | || ((x[0]-kXCEN2D2)*(x[0]-kXCEN2D2)+(x[1]-kYCEN2D2)*(x[1]-kYCEN2D2))<kD2RA2){ | |
e2afb3b6 | 286 | b[1] = kFDIP; |
84737f5e | 287 | } |
e2afb3b6 | 288 | } |
84737f5e | 289 | } |
290 | if(fFactor!=1) { | |
e2afb3b6 | 291 | b[0]*=fFactor; |
292 | b[1]*=fFactor; | |
293 | b[2]*=fFactor; | |
84737f5e | 294 | } |
295 | } | |
296 | ||
e2afb3b6 | 297 | //_______________________________________________________________________ |
84737f5e | 298 | void AliMagFMaps::Copy(AliMagFMaps & /* magf */) const |
299 | { | |
300 | // | |
301 | // Copy *this onto magf -- Not implemented | |
302 | // | |
303 | Fatal("Copy","Not implemented!\n"); | |
304 | } | |
305 | ||
e2afb3b6 | 306 | //_______________________________________________________________________ |
ee4f31cd | 307 | void AliMagFMaps::Streamer(TBuffer &R__b) |
308 | { | |
e2afb3b6 | 309 | // Stream an object of class AliMagFMaps. |
310 | if (R__b.IsReading()) { | |
311 | AliMagFMaps::Class()->ReadBuffer(R__b, this); | |
312 | fFieldRead = 0; | |
313 | } else { | |
314 | AliMagFMaps::Class()->WriteBuffer(R__b, this); | |
315 | } | |
ee4f31cd | 316 | } |