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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> | |
116cbefd | 24 | #include <TVector.h> |
e2afb3b6 | 25 | |
84737f5e | 26 | #include "AliFieldMap.h" |
27 | #include "AliMagFMaps.h" | |
28 | ||
29 | ||
30 | ClassImp(AliMagFMaps) | |
31 | ||
e2afb3b6 | 32 | //_______________________________________________________________________ |
33 | AliMagFMaps::AliMagFMaps(): | |
34 | fSolenoid(0), | |
35 | fL3Option(0), | |
36 | fFieldRead(0) | |
37 | { | |
38 | // | |
39 | // Default constructor | |
40 | // | |
41 | fFieldMap[0] = fFieldMap[1] = fFieldMap[2] = 0; | |
42 | } | |
43 | ||
44 | //_______________________________________________________________________ | |
84737f5e | 45 | AliMagFMaps::AliMagFMaps(const char *name, const char *title, const Int_t integ, |
e2afb3b6 | 46 | const Float_t factor, const Float_t fmax, const Int_t map, |
47 | const Int_t l3): | |
48 | AliMagF(name,title,integ,factor,fmax), | |
49 | fSolenoid(0), | |
50 | fL3Option(l3), | |
51 | fFieldRead(0) | |
84737f5e | 52 | { |
53 | // | |
54 | // Standard constructor | |
55 | // | |
56 | fType = kConMesh; | |
57 | fFieldMap[0] = 0; | |
c2b548d6 | 58 | fMap = map; |
59 | fL3Option = l3; | |
60 | ||
61 | ReadField(); | |
62 | fFieldRead = 1; | |
e2afb3b6 | 63 | // |
64 | // Don't replicate field information in gAlice | |
7b6cddfa | 65 | for (Int_t i = 0; i < 3; i++) fFieldMap[i]->SetWriteEnable(0); |
e2afb3b6 | 66 | // |
84737f5e | 67 | } |
68 | ||
e2afb3b6 | 69 | //_______________________________________________________________________ |
70 | AliMagFMaps::AliMagFMaps(const AliMagFMaps &magf): | |
71 | AliMagF(magf), | |
72 | fSolenoid(0), | |
73 | fL3Option(0), | |
74 | fFieldRead(0) | |
84737f5e | 75 | { |
76 | // | |
77 | // Copy constructor | |
78 | // | |
79 | magf.Copy(*this); | |
80 | } | |
81 | ||
e2afb3b6 | 82 | //_______________________________________________________________________ |
84737f5e | 83 | AliMagFMaps::~AliMagFMaps() |
84 | { | |
e2afb3b6 | 85 | // |
86 | // Destructor | |
87 | // | |
88 | delete fFieldMap[0]; | |
89 | delete fFieldMap[1]; | |
90 | delete fFieldMap[2]; | |
84737f5e | 91 | } |
92 | ||
e2afb3b6 | 93 | //_______________________________________________________________________ |
c2b548d6 | 94 | void AliMagFMaps::ReadField() |
95 | { | |
e2afb3b6 | 96 | // Read Field Map from file |
97 | // | |
98 | // don't read twice | |
99 | // | |
100 | if (fFieldRead) return; | |
101 | fFieldRead = 1; | |
102 | // | |
103 | char* fname; | |
104 | TFile* file = 0; | |
105 | if (fMap == k2kG) { | |
c2b548d6 | 106 | if (fL3Option) { |
e2afb3b6 | 107 | fname = gSystem->ExpandPathName("$(ALICE_ROOT)/data/maps/L3B02.root"); |
108 | file = new TFile(fname); | |
109 | fFieldMap[0] = dynamic_cast<AliFieldMap*>(file->Get("L3B02")); | |
110 | file->Close(); | |
111 | delete file; | |
c2b548d6 | 112 | } |
113 | fname = gSystem->ExpandPathName("$(ALICE_ROOT)/data/maps/DipB02.root"); | |
114 | file = new TFile(fname); | |
e2afb3b6 | 115 | fFieldMap[1] = dynamic_cast<AliFieldMap*>(file->Get("DipB02")); |
c2b548d6 | 116 | file->Close(); |
117 | delete file;; | |
118 | ||
119 | fname = gSystem->ExpandPathName("$(ALICE_ROOT)/data/maps/ExtB02.root"); | |
120 | file = new TFile(fname); | |
e2afb3b6 | 121 | fFieldMap[2] = dynamic_cast<AliFieldMap*>(file->Get("ExtB02")); |
c2b548d6 | 122 | file->Close(); |
123 | delete file; | |
124 | fSolenoid = 2.; | |
e2afb3b6 | 125 | } else if (fMap == k4kG) { |
c2b548d6 | 126 | if (fL3Option) { |
e2afb3b6 | 127 | fname = gSystem->ExpandPathName("$(ALICE_ROOT)/data/maps/L3B04.root"); |
128 | file = new TFile(fname); | |
129 | fFieldMap[0] = dynamic_cast<AliFieldMap*>(file->Get("L3B04")); | |
130 | file->Close(); | |
131 | delete file; | |
c2b548d6 | 132 | } |
133 | ||
134 | fname = gSystem->ExpandPathName("$(ALICE_ROOT)/data/maps/DipB04.root"); | |
135 | file = new TFile(fname); | |
e2afb3b6 | 136 | fFieldMap[1] = dynamic_cast<AliFieldMap*>(file->Get("DipB04")); |
c2b548d6 | 137 | file->Close(); |
e2afb3b6 | 138 | delete file; |
c2b548d6 | 139 | |
140 | fname = gSystem->ExpandPathName("$(ALICE_ROOT)/data/maps/ExtB04.root"); | |
141 | file = new TFile(fname); | |
e2afb3b6 | 142 | fFieldMap[2] = dynamic_cast<AliFieldMap*>(file->Get("ExtB04")); |
c2b548d6 | 143 | file->Close(); |
144 | delete file; | |
145 | fSolenoid = 4.; | |
e2afb3b6 | 146 | } else if (fMap == k5kG) { |
c2b548d6 | 147 | if (fL3Option) { |
e2afb3b6 | 148 | fname = gSystem->ExpandPathName("$(ALICE_ROOT)/data/maps/L3B05.root"); |
149 | file = new TFile(fname); | |
150 | fFieldMap[0] = dynamic_cast<AliFieldMap*>(file->Get("L3B05")); | |
151 | file->Close(); | |
152 | delete file; | |
c2b548d6 | 153 | } |
154 | ||
155 | fname = gSystem->ExpandPathName("$(ALICE_ROOT)/data/maps/DipB05.root"); | |
156 | file = new TFile(fname); | |
e2afb3b6 | 157 | fFieldMap[1] = dynamic_cast<AliFieldMap*>(file->Get("DipB05")); |
c2b548d6 | 158 | file->Close(); |
e2afb3b6 | 159 | delete file; |
c2b548d6 | 160 | |
161 | fname = gSystem->ExpandPathName("$(ALICE_ROOT)/data/maps/ExtB05.root"); | |
162 | file = new TFile(fname); | |
e2afb3b6 | 163 | fFieldMap[2] = dynamic_cast<AliFieldMap*>(file->Get("ExtB05")); |
c2b548d6 | 164 | file->Close(); |
165 | delete file; | |
166 | ||
167 | fSolenoid = 5.; | |
e2afb3b6 | 168 | } |
169 | ||
170 | if (!fL3Option) { | |
171 | // | |
172 | // Dummy L3 map | |
c2b548d6 | 173 | fFieldMap[0] = new AliFieldMap(); |
174 | fFieldMap[0] -> SetLimits(-800., 800., -800., 800., -700., 700.); | |
e2afb3b6 | 175 | } |
c2b548d6 | 176 | } |
177 | ||
e2afb3b6 | 178 | //_______________________________________________________________________ |
84737f5e | 179 | Float_t AliMagFMaps::SolenoidField() const |
180 | { | |
e2afb3b6 | 181 | // |
182 | // Returns max. L3 (solenoid) field strength | |
183 | // according to field map setting | |
184 | // | |
185 | return fSolenoid; | |
84737f5e | 186 | } |
187 | ||
e2afb3b6 | 188 | //_______________________________________________________________________ |
84737f5e | 189 | void AliMagFMaps::Field(Float_t *x, Float_t *b) |
190 | { | |
191 | // | |
192 | // Method to calculate the magnetic field | |
193 | // | |
84737f5e | 194 | // --- find the position in the grid --- |
195 | ||
ee4f31cd | 196 | if (!fFieldRead) ReadField(); |
e2afb3b6 | 197 | |
84737f5e | 198 | b[0]=b[1]=b[2]=0; |
199 | AliFieldMap* map = 0; | |
84737f5e | 200 | if (fFieldMap[0]->Inside(x[0], x[1], x[2])) { |
e2afb3b6 | 201 | map = fFieldMap[0]; |
202 | if (!fL3Option) { | |
203 | // | |
204 | // Constant L3 field, if this option was selected | |
205 | // | |
84737f5e | 206 | b[2] = fSolenoid; |
207 | return; | |
e2afb3b6 | 208 | } |
84737f5e | 209 | } else if (fFieldMap[1]->Inside(x[0], x[1], x[2])) { |
e2afb3b6 | 210 | map = fFieldMap[1]; |
84737f5e | 211 | } else if (fFieldMap[2]->Inside(x[0], x[1], x[2])) { |
e2afb3b6 | 212 | map = fFieldMap[2]; |
84737f5e | 213 | } |
214 | ||
215 | if(map){ | |
e2afb3b6 | 216 | map->Field(x,b); |
84737f5e | 217 | } else { |
e2afb3b6 | 218 | //This is the ZDC part |
219 | Float_t rad2=x[0]*x[0]+x[1]*x[1]; | |
220 | if(x[2]>kCORBEG2 && x[2]<kCOREND2){ | |
84737f5e | 221 | if(rad2<kCOR2RA2){ |
e2afb3b6 | 222 | b[0] = kFCORN2; |
84737f5e | 223 | } |
e2afb3b6 | 224 | } |
225 | else if(x[2]>kZ1BEG && x[2]<kZ1END){ | |
84737f5e | 226 | if(rad2<kZ1RA2){ |
e2afb3b6 | 227 | b[0] = -kG1*x[1]; |
228 | b[1] = -kG1*x[0]; | |
84737f5e | 229 | } |
e2afb3b6 | 230 | } |
231 | else if(x[2]>kZ2BEG && x[2]<kZ2END){ | |
84737f5e | 232 | if(rad2<kZ2RA2){ |
e2afb3b6 | 233 | b[0] = kG1*x[1]; |
234 | b[1] = kG1*x[0]; | |
84737f5e | 235 | } |
e2afb3b6 | 236 | } |
237 | else if(x[2]>kZ3BEG && x[2]<kZ3END){ | |
84737f5e | 238 | if(rad2<kZ3RA2){ |
e2afb3b6 | 239 | b[0] = kG1*x[1]; |
240 | b[1] = kG1*x[0]; | |
84737f5e | 241 | } |
e2afb3b6 | 242 | } |
243 | else if(x[2]>kZ4BEG && x[2]<kZ4END){ | |
84737f5e | 244 | if(rad2<kZ4RA2){ |
e2afb3b6 | 245 | b[0] = -kG1*x[1]; |
246 | b[1] = -kG1*x[0]; | |
84737f5e | 247 | } |
e2afb3b6 | 248 | } |
249 | else if(x[2]>kD1BEG && x[2]<kD1END){ | |
84737f5e | 250 | if(rad2<kD1RA2){ |
e2afb3b6 | 251 | b[1] = -kFDIP; |
84737f5e | 252 | } |
e2afb3b6 | 253 | } |
254 | else if(x[2]>kD2BEG && x[2]<kD2END){ | |
84737f5e | 255 | if(((x[0]-kXCEN1D2)*(x[0]-kXCEN1D2)+(x[1]-kYCEN1D2)*(x[1]-kYCEN1D2))<kD2RA2 |
256 | || ((x[0]-kXCEN2D2)*(x[0]-kXCEN2D2)+(x[1]-kYCEN2D2)*(x[1]-kYCEN2D2))<kD2RA2){ | |
e2afb3b6 | 257 | b[1] = kFDIP; |
84737f5e | 258 | } |
e2afb3b6 | 259 | } |
84737f5e | 260 | } |
261 | if(fFactor!=1) { | |
e2afb3b6 | 262 | b[0]*=fFactor; |
263 | b[1]*=fFactor; | |
264 | b[2]*=fFactor; | |
84737f5e | 265 | } |
266 | } | |
267 | ||
e2afb3b6 | 268 | //_______________________________________________________________________ |
84737f5e | 269 | void AliMagFMaps::Copy(AliMagFMaps & /* magf */) const |
270 | { | |
271 | // | |
272 | // Copy *this onto magf -- Not implemented | |
273 | // | |
274 | Fatal("Copy","Not implemented!\n"); | |
275 | } | |
276 | ||
e2afb3b6 | 277 | //_______________________________________________________________________ |
ee4f31cd | 278 | void AliMagFMaps::Streamer(TBuffer &R__b) |
279 | { | |
e2afb3b6 | 280 | // Stream an object of class AliMagFMaps. |
281 | if (R__b.IsReading()) { | |
282 | AliMagFMaps::Class()->ReadBuffer(R__b, this); | |
283 | fFieldRead = 0; | |
284 | } else { | |
285 | AliMagFMaps::Class()->WriteBuffer(R__b, this); | |
286 | } | |
ee4f31cd | 287 | } |