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 **************************************************************************/
18 Revision 1.4 2002/02/22 14:00:20 morsch
19 Protection against replication of fieldmap data in gAlice.
21 Revision 1.3 2002/02/21 09:23:41 morsch
22 Create dummy field map for L3 in case no detailed map is needed.
24 Revision 1.2 2002/02/19 16:14:35 morsch
25 Reading of 0.2 T solenoid field map enabled.
27 Revision 1.1 2002/02/14 11:41:28 morsch
28 Magnetic field map for ALICE for L3+muon spectrometer stored in 3 seperate
34 // Author: Andreas Morsch <andreas.morsch@cern.ch>
39 #include "AliFieldMap.h"
40 #include "AliMagFMaps.h"
45 //________________________________________
46 AliMagFMaps::AliMagFMaps(const char *name, const char *title, const Int_t integ,
47 const Float_t factor, const Float_t fmax, const Int_t map,
49 : AliMagF(name,title,integ,factor,fmax)
52 // Standard constructor
62 fname = gSystem->ExpandPathName("$(ALICE_ROOT)/data/maps/L3B02.root");
63 file = new TFile(fname);
64 fFieldMap[0] = (AliFieldMap*) file->Get("L3B02");
68 fname = gSystem->ExpandPathName("$(ALICE_ROOT)/data/maps/DipB02.root");
69 file = new TFile(fname);
70 fFieldMap[1] = (AliFieldMap*) file->Get("DipB02");
74 fname = gSystem->ExpandPathName("$(ALICE_ROOT)/data/maps/ExtB02.root");
75 file = new TFile(fname);
76 fFieldMap[2] = (AliFieldMap*) file->Get("ExtB02");
80 } else if (fMap == k4kG) {
82 fname = gSystem->ExpandPathName("$(ALICE_ROOT)/data/maps/L3B04.root");
83 file = new TFile(fname);
84 fFieldMap[0] = (AliFieldMap*) file->Get("L3B04");
89 fname = gSystem->ExpandPathName("$(ALICE_ROOT)/data/maps/DipB04.root");
90 file = new TFile(fname);
91 fFieldMap[1] = (AliFieldMap*) file->Get("DipB04");
95 fname = gSystem->ExpandPathName("$(ALICE_ROOT)/data/maps/ExtB04.root");
96 file = new TFile(fname);
97 fFieldMap[2] = (AliFieldMap*) file->Get("ExtB04");
101 } else if (fMap == k5kG) {
103 fname = gSystem->ExpandPathName("$(ALICE_ROOT)/data/maps/L3B05.root");
104 file = new TFile(fname);
105 fFieldMap[0] = (AliFieldMap*) file->Get("L3B05");
110 fname = gSystem->ExpandPathName("$(ALICE_ROOT)/data/maps/DipB05.root");
111 file = new TFile(fname);
112 fFieldMap[1] = (AliFieldMap*) file->Get("DipB05");
116 fname = gSystem->ExpandPathName("$(ALICE_ROOT)/data/maps/ExtB05.root");
117 file = new TFile(fname);
118 fFieldMap[2] = (AliFieldMap*) file->Get("ExtB05");
128 fFieldMap[0] = new AliFieldMap();
129 fFieldMap[0] -> SetLimits(-800., 800., -800., 800., -700., 700.);
133 // Don't replicate field information in gAlice
134 for (Int_t i = 0; i < 3; i++) fFieldMap[i]->SetWriteEnable(0);
139 //________________________________________
140 AliMagFMaps::AliMagFMaps(const AliMagFMaps &magf)
148 AliMagFMaps::~AliMagFMaps()
159 Float_t AliMagFMaps::SolenoidField() const
162 // Returns max. L3 (solenoid) field strength
163 // according to field map setting
170 //________________________________________
171 void AliMagFMaps::Field(Float_t *x, Float_t *b)
174 // Method to calculate the magnetic field
176 // --- find the position in the grid ---
179 AliFieldMap* map = 0;
180 if (fFieldMap[0]->Inside(x[0], x[1], x[2])) {
184 // Constant L3 field, if this option was selected
189 } else if (fFieldMap[1]->Inside(x[0], x[1], x[2])) {
191 } else if (fFieldMap[2]->Inside(x[0], x[1], x[2])) {
198 //This is the ZDC part
199 Float_t rad2=x[0]*x[0]+x[1]*x[1];
200 if(x[2]>kCORBEG2 && x[2]<kCOREND2){
205 else if(x[2]>kZ1BEG && x[2]<kZ1END){
211 else if(x[2]>kZ2BEG && x[2]<kZ2END){
217 else if(x[2]>kZ3BEG && x[2]<kZ3END){
223 else if(x[2]>kZ4BEG && x[2]<kZ4END){
229 else if(x[2]>kD1BEG && x[2]<kD1END){
234 else if(x[2]>kD2BEG && x[2]<kD2END){
235 if(((x[0]-kXCEN1D2)*(x[0]-kXCEN1D2)+(x[1]-kYCEN1D2)*(x[1]-kYCEN1D2))<kD2RA2
236 || ((x[0]-kXCEN2D2)*(x[0]-kXCEN2D2)+(x[1]-kYCEN2D2)*(x[1]-kYCEN2D2))<kD2RA2){
250 //________________________________________
251 void AliMagFMaps::Copy(AliMagFMaps & /* magf */) const
254 // Copy *this onto magf -- Not implemented
256 Fatal("Copy","Not implemented!\n");
259 //________________________________________
260 AliMagFMaps & AliMagFMaps::operator =(const AliMagFMaps &magf)