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80165cad | 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 | /* $Id$ */ | |
17 | ||
18 | /////////////////////////////////////////////////////////////////////////////// | |
19 | // // | |
20 | // Beam Condition Monitor BCM // | |
21 | // // | |
22 | // andreas.morsch@cern.ch // | |
23 | /////////////////////////////////////////////////////////////////////////////// | |
24 | ||
80165cad | 25 | #include <TClonesArray.h> |
f7a1cc68 | 26 | #include <TGeoCompositeShape.h> |
27 | #include <TGeoGlobalMagField.h> | |
28 | #include <TGeoManager.h> | |
80165cad | 29 | #include <TGeoMaterial.h> |
80165cad | 30 | #include <TGeoMatrix.h> |
f7a1cc68 | 31 | #include <TGeoMedium.h> |
80165cad | 32 | #include <TGeoPgon.h> |
f7a1cc68 | 33 | #include <TGeoVolume.h> |
80165cad | 34 | #include <TGeoXtru.h> |
f7a1cc68 | 35 | #include <TVirtualMC.h> |
80165cad | 36 | |
37 | #include "AliBCM.h" | |
38 | #include "AliBCMHit.h" | |
45e280ce | 39 | #include "AliBCMLoader.h" |
80165cad | 40 | #include "AliMagF.h" |
41 | #include "AliRun.h" | |
42 | #include "AliMC.h" | |
43 | ||
44 | ClassImp(AliBCM) | |
45 | ||
46 | ||
47 | //_____________________________________________________________________________ | |
48 | AliBCM::AliBCM(): | |
49 | AliDetector(), | |
50 | fVolId(0) | |
51 | { | |
52 | // | |
53 | // Default constructor for BCM | |
54 | // | |
55 | } | |
56 | ||
57 | //_____________________________________________________________________________ | |
58 | AliBCM::AliBCM(const char *name, const char *title): | |
59 | AliDetector(name,title), | |
60 | fVolId(0) | |
61 | { | |
62 | // | |
63 | // Constructor | |
64 | fHits = new TClonesArray("AliBCMHit"); | |
65 | fNhits = 0; | |
66 | gAlice->GetMCApp()->AddHitList(fHits); | |
67 | } | |
68 | AliBCM::~AliBCM() | |
69 | { | |
70 | // Destructor | |
71 | if(fHits) delete fHits; | |
72 | } | |
73 | ||
74 | void AliBCM::StepManager() | |
75 | { | |
76 | // | |
77 | // Step Manager for ALICE Beam Condition Monitor | |
78 | // | |
79 | ||
80 | static Float_t edepT; | |
45e280ce | 81 | static Double_t xh[4] = {0., 0., 0., 0.}; |
80165cad | 82 | Float_t edep = 0.; |
83 | Int_t copy = -1; | |
84 | ||
85 | ||
86 | if (gMC->TrackCharge() && | |
87 | gMC->CurrentVolID(copy) == fVolId) { | |
88 | // Charged particle inside sensitive volume | |
89 | // | |
90 | // Entering | |
91 | if (gMC->IsTrackEntering()) { | |
92 | edepT = 0.; | |
45e280ce | 93 | gMC->TrackPosition(xh[0],xh[1],xh[2]); |
94 | xh[3] = gMC->TrackTime(); | |
80165cad | 95 | } |
96 | ||
97 | // | |
98 | // Any step | |
99 | if ((edep = gMC->Edep()) > 0.) { | |
100 | Double_t x[3]; | |
101 | gMC->TrackPosition(x[0],x[1],x[2]); | |
102 | edepT += edep; | |
103 | } | |
104 | // | |
105 | // Exiting | |
106 | if(gMC->IsTrackExiting()||gMC->IsTrackStop()||gMC->IsTrackDisappeared()) | |
107 | { | |
108 | Int_t track = gAlice->GetMCApp()->GetCurrentTrackNumber(); | |
109 | TClonesArray &lhits = *fHits; | |
110 | Int_t ic = copy + 10; | |
111 | if (xh[2] < 0.) ic+=10; | |
112 | new(lhits[fNhits++]) AliBCMHit(1, track, xh, ic, edepT); | |
113 | } | |
114 | } | |
115 | ||
116 | ||
117 | } | |
118 | ||
119 | //_____________________________________________________________________________ | |
120 | void AliBCM::CreateGeometry() | |
121 | { | |
122 | // | |
123 | // Create geometry for BCM | |
124 | // | |
125 | ||
126 | // | |
127 | // Top volume | |
128 | TGeoVolume* top = gGeoManager->GetVolume("ALIC"); | |
129 | // Media | |
130 | TGeoMedium* medPCD = gGeoManager->GetMedium("BCM_PCD"); | |
131 | // Rotations | |
132 | TGeoRotation* rotxz = new TGeoRotation("rotxz" , 270., 0., 90., 90., 180., 0.); | |
133 | TGeoRotation* rot000 = new TGeoRotation("rot000", 90., 0., 90., 90., 0., 0.); | |
134 | TGeoRotation* rot090 = new TGeoRotation("rot090", 90., 90., 90., 180., 0., 0.); | |
135 | TGeoRotation* rot180 = new TGeoRotation("rot180", 90., 180., 90., 270., 0., 0.); | |
136 | TGeoRotation* rot270 = new TGeoRotation("rot270", 90., 270., 90., 0., 0., 0.); | |
137 | // | |
138 | const Float_t kWidth = 1.00; | |
139 | const Float_t kThickness = 0.05; | |
140 | const Float_t rBCM = 7.; | |
141 | ||
142 | ||
143 | TGeoBBox* shBCMpcd = new TGeoBBox(kWidth/2., kWidth/2., kThickness/2.); | |
144 | TGeoVolume* voBCMpcd = new TGeoVolume("BCMpcd", shBCMpcd, medPCD); | |
145 | TGeoVolumeAssembly* voBCM = new TGeoVolumeAssembly("BCM"); | |
146 | ||
147 | voBCM->AddNode(voBCMpcd, 1, new TGeoCombiTrans(+rBCM, 0. , 0., rot000)); | |
148 | voBCM->AddNode(voBCMpcd, 2, new TGeoCombiTrans(0. , +rBCM , 0., rot090)); | |
149 | voBCM->AddNode(voBCMpcd, 3, new TGeoCombiTrans(-rBCM, 0., 0., rot180)); | |
150 | voBCM->AddNode(voBCMpcd, 4, new TGeoCombiTrans(0. , -rBCM , 0., rot270)); | |
151 | ||
152 | top->AddNode(voBCM, 1, new TGeoTranslation(0., 0., 1561.)); | |
153 | top->AddNode(voBCM, 2, new TGeoCombiTrans(0., 0., -1908., rotxz)); | |
154 | ||
155 | } | |
156 | ||
157 | //_____________________________________________________________________________ | |
158 | void AliBCM::CreateMaterials() | |
159 | { | |
160 | // | |
161 | // Create materials for BCM | |
162 | // | |
163 | // Polycristalline Diamond | |
164 | Float_t rho = 3.53; | |
165 | Float_t absl = 86.3 / rho; | |
166 | Float_t radl = 42.7 / rho; | |
167 | // | |
168 | Float_t epsil = .001; // Tracking precision, | |
169 | Float_t stemax = -1.; // Maximum displacement for multiple scat | |
170 | Float_t tmaxfd = -20. ; // Maximum angle due to field deflection | |
171 | Float_t deemax = -.01; // Maximum fractional energy loss, DLS | |
172 | Float_t stmin = -.8; | |
f7a1cc68 | 173 | Int_t isxfld = ((AliMagF*)TGeoGlobalMagField::Instance()->GetField())->Integ(); |
174 | Float_t sxmgmx = ((AliMagF*)TGeoGlobalMagField::Instance()->GetField())->Max(); | |
80165cad | 175 | |
176 | AliMaterial(1, "PCD", 12.011, 6., rho, radl, absl); | |
177 | // | |
178 | AliMedium(1, "PCD", 1, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin); | |
179 | } | |
180 | ||
181 | //_____________________________________________________________________________ | |
182 | void AliBCM::Init() | |
183 | { | |
184 | // | |
185 | // Initialise BCM magnet after it has been built | |
186 | // | |
187 | Int_t i; | |
188 | // | |
189 | if(AliLog::GetGlobalDebugLevel()>0) { | |
190 | printf("\n%s: ",ClassName()); | |
191 | for(i=0;i<35;i++) printf("*"); | |
192 | printf(" BCM_INIT "); | |
193 | for(i=0;i<35;i++) printf("*"); | |
194 | printf("\n%s: ",ClassName()); | |
195 | for(i=0;i<80;i++) printf("*"); | |
196 | printf("\n"); | |
197 | } | |
198 | ||
199 | // | |
200 | // Here the BCM initialisation code (if any!) | |
201 | fVolId = gMC->VolId("BCMpcd"); | |
202 | } | |
203 | ||
204 | void AliBCM::MakeBranch(Option_t* option) | |
205 | { | |
206 | //Create Tree branches for the BCM | |
207 | ||
208 | const Int_t kBufSize = 4000; | |
209 | const char *cH = strstr(option,"H"); | |
210 | // const char *cD = strstr(option,"D"); | |
211 | // const char *cR = strstr(option,"R"); | |
212 | // const char *cS = strstr(option,"S"); | |
213 | ||
cb5b8b21 | 214 | if(cH && fLoader->TreeH() && (fHits == 0x0)){ |
80165cad | 215 | fHits = new TClonesArray("AliBCMHit"); |
216 | fNhits = 0; | |
cb5b8b21 | 217 | MakeBranchInTree(fLoader->TreeH(), "BCM" ,&fHits ,kBufSize, 0); |
80165cad | 218 | } |
219 | AliDetector::MakeBranch(option); | |
220 | } | |
221 | ||
222 | void AliBCM::SetTreeAddress() | |
223 | { | |
224 | // Set branch address | |
225 | ||
cb5b8b21 | 226 | if (fLoader->TreeH() && fHits==0x0) |
80165cad | 227 | fHits = new TClonesArray("AliBCMHit", 4000); |
228 | AliDetector::SetTreeAddress(); | |
229 | } | |
45e280ce | 230 | |
231 | //_____________________________________________________________________________ | |
232 | AliLoader* AliBCM::MakeLoader(const char* topfoldername) | |
233 | { | |
234 | // | |
235 | // Builds BCM getter (AliLoader type) | |
236 | AliDebug(1,Form("Creating AliBCMLoader, Top folder is %s ",topfoldername)); | |
237 | fLoader = new AliBCMLoader(GetName(),topfoldername); | |
238 | return fLoader; | |
239 | } |