1 /**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
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 **************************************************************************/
19 // Author: Andreas Morsch <andreas.morsch@cern.ch>
25 #include "AliFieldMap.h"
26 #include "AliMagFMaps.h"
31 //_______________________________________________________________________
32 AliMagFMaps::AliMagFMaps():
38 // Default constructor
40 fFieldMap[0] = fFieldMap[1] = fFieldMap[2] = 0;
43 //_______________________________________________________________________
44 AliMagFMaps::AliMagFMaps(const char *name, const char *title, const Int_t integ,
45 const Float_t factor, const Float_t fmax, const Int_t map,
47 AliMagF(name,title,integ,factor,fmax),
53 // Standard constructor
63 // Don't replicate field information in gAlice
64 for (Int_t i = 0; i < 3; i++) fFieldMap[i]->SetWriteEnable(0);
68 //_______________________________________________________________________
69 AliMagFMaps::AliMagFMaps(const AliMagFMaps &magf):
81 //_______________________________________________________________________
82 AliMagFMaps::~AliMagFMaps()
92 //_______________________________________________________________________
93 void AliMagFMaps::ReadField()
95 // Read Field Map from file
99 if (fFieldRead) return;
106 fname = gSystem->ExpandPathName("$(ALICE_ROOT)/data/maps/L3B02.root");
107 file = new TFile(fname);
108 fFieldMap[0] = dynamic_cast<AliFieldMap*>(file->Get("L3B02"));
112 fname = gSystem->ExpandPathName("$(ALICE_ROOT)/data/maps/DipB02.root");
113 file = new TFile(fname);
114 fFieldMap[1] = dynamic_cast<AliFieldMap*>(file->Get("DipB02"));
118 fname = gSystem->ExpandPathName("$(ALICE_ROOT)/data/maps/ExtB02.root");
119 file = new TFile(fname);
120 fFieldMap[2] = dynamic_cast<AliFieldMap*>(file->Get("ExtB02"));
124 } else if (fMap == k4kG) {
126 fname = gSystem->ExpandPathName("$(ALICE_ROOT)/data/maps/L3B04.root");
127 file = new TFile(fname);
128 fFieldMap[0] = dynamic_cast<AliFieldMap*>(file->Get("L3B04"));
133 fname = gSystem->ExpandPathName("$(ALICE_ROOT)/data/maps/DipB04.root");
134 file = new TFile(fname);
135 fFieldMap[1] = dynamic_cast<AliFieldMap*>(file->Get("DipB04"));
139 fname = gSystem->ExpandPathName("$(ALICE_ROOT)/data/maps/ExtB04.root");
140 file = new TFile(fname);
141 fFieldMap[2] = dynamic_cast<AliFieldMap*>(file->Get("ExtB04"));
145 } else if (fMap == k5kG) {
147 fname = gSystem->ExpandPathName("$(ALICE_ROOT)/data/maps/L3B05.root");
148 file = new TFile(fname);
149 fFieldMap[0] = dynamic_cast<AliFieldMap*>(file->Get("L3B05"));
154 fname = gSystem->ExpandPathName("$(ALICE_ROOT)/data/maps/DipB05.root");
155 file = new TFile(fname);
156 fFieldMap[1] = dynamic_cast<AliFieldMap*>(file->Get("DipB05"));
160 fname = gSystem->ExpandPathName("$(ALICE_ROOT)/data/maps/ExtB05.root");
161 file = new TFile(fname);
162 fFieldMap[2] = dynamic_cast<AliFieldMap*>(file->Get("ExtB05"));
172 fFieldMap[0] = new AliFieldMap();
173 fFieldMap[0] -> SetLimits(-800., 800., -800., 800., -700., 700.);
177 //_______________________________________________________________________
178 Float_t AliMagFMaps::SolenoidField() const
181 // Returns max. L3 (solenoid) field strength
182 // according to field map setting
187 //_______________________________________________________________________
188 void AliMagFMaps::Field(Float_t *x, Float_t *b)
191 // Method to calculate the magnetic field
193 // --- find the position in the grid ---
195 if (!fFieldRead) ReadField();
198 AliFieldMap* map = 0;
199 if (fFieldMap[0]->Inside(x[0], x[1], x[2])) {
203 // Constant L3 field, if this option was selected
208 } else if (fFieldMap[1]->Inside(x[0], x[1], x[2])) {
210 } else if (fFieldMap[2]->Inside(x[0], x[1], x[2])) {
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){
224 else if(x[2]>kZ1BEG && x[2]<kZ1END){
230 else if(x[2]>kZ2BEG && x[2]<kZ2END){
236 else if(x[2]>kZ3BEG && x[2]<kZ3END){
242 else if(x[2]>kZ4BEG && x[2]<kZ4END){
248 else if(x[2]>kD1BEG && x[2]<kD1END){
253 else if(x[2]>kD2BEG && x[2]<kD2END){
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){
267 //_______________________________________________________________________
268 void AliMagFMaps::Copy(AliMagFMaps & /* magf */) const
271 // Copy *this onto magf -- Not implemented
273 Fatal("Copy","Not implemented!\n");
276 //_______________________________________________________________________
277 void AliMagFMaps::Streamer(TBuffer &R__b)
279 // Stream an object of class AliMagFMaps.
280 if (R__b.IsReading()) {
281 AliMagFMaps::Class()->ReadBuffer(R__b, this);
284 AliMagFMaps::Class()->WriteBuffer(R__b, this);