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[u/mrichter/AliRoot.git] / CRT / AliCRT.cxx
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fb7a1f55 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$Log$
18
19*/
20
21///////////////////////////////////////////////////////////////////////////////
22// //
23// Cosmic Rays ALICE Trigger //
24// This class contains the basic functions for the Cosmic Ray ALICE //
25// detector. Functions specific to one particular geometry are //
26// contained in the derived classes //
27//
28// Begin_Html
29/*
30<img src="picts/AliCRTClass.gif">
31</pre>
32<p>The responsible person for this module is
33<a href="mailto:Enrique.Gamez.Flores@cern.ch">Enrique Gamez Flores</a>.
34</font>
35<pre>
36*/
37//End_Html
38//
39//
40// //
41///////////////////////////////////////////////////////////////////////////////
42
43
44#include <iostream>
45#include <fstream>
46
47#include <TTree.h>
48
49
50#include "AliMC.h"
51#include "AliRun.h"
52#include "AliMagF.h"
53
54#include "AliCRT.h"
55#include "AliCRTConstants.h"
56#include "AliCRTdigit.h"
57#include "AliCRThit.h"
58
59
60ClassImp(AliCRT)
61
62
63static AliCRTdigit *digits;
64
65//_____________________________________________________________________________
66AliCRT::AliCRT()
67{
68 //
69 // Default constructor for L3 magnet
70 //
71
72 fIshunt = 1;
73 fHits = 0;
74 fDigits = 0;
75}
76
77//_____________________________________________________________________________
78AliCRT::AliCRT(const char *name, const char *title)
79 : AliDetector(name,title)
80{
81 //
82 // Standard constructor for the CRT module
83 //
84
85 fIshunt = 1; // All hits are associated with primary particles
86
87 fHits = new TClonesArray("AliCRThit",400) ;
88 fDigits = new TClonesArray("AliCRTdigit",400) ;
89
90 gAlice->AddHitList(fHits);
91
92 SetMarkerColor(7);
93 SetMarkerStyle(2);
94 SetMarkerSize(0.4);
95
96}
97
98//_____________________________________________________________________________
99AliCRT::~AliCRT()
100{
101 //
102 // Standar destructor.
103 //
104 if (fHits) {
105 fHits->Delete();
106 delete fHits;
107 }
108}
109
110//_____________________________________________________________________________
111void AliCRT::AddHit(Int_t track, Int_t *vol, Float_t *hits)
112{
113 //
114 // Add a CRT hit
115 //
116 TClonesArray &lhits = *fHits;
117 new(lhits[fNhits++]) AliCRThit(fIshunt,track,vol,hits);
118}
119
120//_____________________________________________________________________________
121void AliCRT::AddDigit(Int_t *tracks,Int_t *digits)
122{
123
124 // Add a CRT digit to the list. Dummy function.
125
126}
127
128//_____________________________________________________________________________
129void AliCRT::Init() const
130{
131 //
132 // Initialise ...
133 //
134
135 Int_t i;
136 //
137 if(fDebug) {
138 printf("\n%s: ",ClassName());
139 for(i=0;i<35;i++) printf("*");
140 printf(" CRT_INIT ");
141 for(i=0;i<35;i++) printf("*");
142 printf("\n%s: ",ClassName());
143 //
144 // Here the CRT initialisation code (if any!)
145 for(i=0;i<80;i++) printf("*");
146 printf("\n");
147 }
148}
149
150//_____________________________________________________________________________
151void AliCRT::ResetHits ()
152{
153 // Reset number of clusters and the cluster array for this detector
154 AliDetector::ResetHits ();
155}
156
157//_____________________________________________________________________________
158void AliCRT::ResetDigits ()
159{
160 //
161 // Reset number of digits and the digits array for this detector
162 AliDetector::ResetDigits ();
163 //
164}
165
166//____________________________________________________________________________
167void AliCRT::FinishEvent()
168{
169// do nothing
170}
171
172//_____________________________________________________________________________
173void AliCRT::BuildGeometry()
174{
175 //
176 // Build simple ROOT TNode geometry for event display
177 //
178}
179
180//_____________________________________________________________________________
181void AliCRT::CreateGeometry()
182{
183 //
184 // Build simple ROOT TNode geometry for GEANT simulations
185 //
186}
187
188//_____________________________________________________________________________
189void AliCRT::CreateMaterials()
190{
191 // Magnatic field inside the pit
192 Int_t isxfld = gAlice->Field()->Integ();
193 Float_t sxmgmx = gAlice->Field()->Max();
194
195 //Magnetic field above the Magnet.
196 Int_t xfield = 0; // no Magnetic field.
197 Float_t xfieldm = 0;
198 Float_t xepsil = 0.1; // Tracking precission in cm. obove the pit
199
200 // --- Define the various materials for GEANT ---
201 Float_t aconc[10] = { 1.,12.01,15.994,22.99,24.305,26.98,28.086,39.1,40.08,55.85 };
202 Float_t zconc[10] = { 1.,6.,8.,11.,12.,13.,14.,19.,20.,26. };
203 Float_t wconc[10] = { .01,.001,.529107,.016,.002,.033872,.337021,.013,.044,.014 };
204
205 Float_t epsil, stmin, tmaxfd, deemax, stemax;
206 //
207 // Aluminum
208 AliMaterial(9, "ALUMINIUM$", 26.98, 13., 2.7, 8.9, 37.2);
209 AliMaterial(29, "ALUMINIUM$", 26.98, 13., 2.7, 8.9, 37.2);
210 AliMaterial(49, "ALUMINIUM$", 26.98, 13., 2.7, 8.9, 37.2);
211 //
212 // Iron
213 AliMaterial(10, "IRON$ ", 55.85, 26., 7.87, 1.76, 17.1);
214 AliMaterial(30, "IRON$ ", 55.85, 26., 7.87, 1.76, 17.1);
215 AliMaterial(50, "IRON$ ", 55.85, 26., 7.87, 1.76, 17.1);
216 //
217 // Air
218 AliMaterial(15, "AIR$ ", 14.61, 7.3, .001205, 30423.24, 67500.);
219 AliMaterial(35, "AIR$ ", 14.61, 7.3, .001205, 30423.24, 67500.);
220 AliMaterial(55, "AIR$ ", 14.61, 7.3, .001205, 30423.24, 67500.);
221 //
222 // Vacuum
223 AliMaterial(16, "VACUUM$ ", 1e-16, 1e-16, 1e-16, 1e16, 1e16);
224 AliMaterial(36, "VACUUM$ ", 1e-16, 1e-16, 1e-16, 1e16, 1e16);
225 AliMaterial(56, "VACUUM$ ", 1e-16, 1e-16, 1e-16, 1e16, 1e16);
226 //
227 // Concrete
228 AliMixture(17, "CONCRETE$", aconc, zconc, 2.35, 10, wconc);
229 AliMixture(37, "CONCRETE$", aconc, zconc, 2.35, 10, wconc);
230 AliMixture(57, "CONCRETE$", aconc, zconc, 2.35, 10, wconc);
231
232
233 // Scintillator material polystyrene
234 Float_t aP[2] = {12.011, 1.00794};
235 Float_t zP[2] = {6.0, 1.0};
236 Float_t wP[2] = {1.0, 1.0};
237 Float_t dP = 1.032;
238 AliMixture(3, "Polystyrene$", aP, zP, dP, -2, wP);
239 // Standard ROCK, ROCK1 and molasse.
240 Float_t aRock[1] = {22.};
241 Float_t zRock[1] = {11.};
242 Float_t wRock[1] = {1.};
243 Float_t dRock = 2.65;
244 AliMixture(4, "Standard Rock$", aRock, zRock, dRock, 1, wRock);
245 Float_t dRock1 = 2.2;
246 AliMixture(5, "Rock1$", aRock, zRock, dRock1, 1, wRock);
247 Float_t dMolasse = 2.50;
248 AliMixture(6, "Molasse$", aRock, zRock, dMolasse, 1, wRock);
249
250 // ****************
251 // Defines tracking media parameters.
252 // Les valeurs sont commentees pour laisser le defaut
253 // a GEANT (version 3-21, page CONS200), f.m.
254 epsil = .001; // Tracking precision, Inside the pit
255 stemax = -1.; // Maximum displacement for multiple scattering
256 tmaxfd = -20.; // Maximum angle due to field deflection
257 deemax = -.3; // Maximum fractional energy loss, DLS
258 stmin = -.8;
259 // ***************
260
261 //
262 // Aluminum
263 AliMedium(9, "ALU_C0 ", 9, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
264 AliMedium(29, "ALU_C1 ", 29, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
265 AliMedium(49, "ALU_C2 ", 49, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
266 //
267 // Iron
268 AliMedium(10, "FE_C0 ", 10, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
269 AliMedium(30, "FE_C1 ", 30, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
270 AliMedium(50, "FE_C2 ", 50, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
271 //
272 // Air
273 AliMedium(15, "AIR_C0 ", 15, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
274 AliMedium(35, "AIR_C1 ", 35, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
275 AliMedium(55, "AIR_C2 ", 55, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
276 //
277 // Vacuum
278 AliMedium(16, "VA_C0 ", 16, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
279 AliMedium(36, "VA_C1 ", 36, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
280 AliMedium(56, "VA_C2 ", 56, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
281 //
282 // Concrete
283 AliMedium(17, "CC_C0 ", 17, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
284 AliMedium(37, "CC_C1 ", 37, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
285 AliMedium(57, "CC_C2 ", 57, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
286
287
288 // The scintillator of the CPV made of Polystyrene
289 // scintillator -> idtmed[1102]
290 AliMedium(3, "CPV scint. ", 3, 1, isxfld, sxmgmx, 10., stemax, deemax, epsil, stmin);
291
292 // Standard ROCK -> idtmed[1103]
293 AliMedium(4, "Standard Rock ", 4, 0, xfield, xfieldm, tmaxfd, stemax, deemax, xepsil, stmin);
294
295 // ROCK1 -> idtmed[1104]
296 AliMedium(5, "Rock 1 ", 5, 0, xfield, xfieldm, tmaxfd, stemax, deemax, xepsil, stmin);
297
298
299 // Molasse -> idtmed[1105]
300 AliMedium(6, "Molasse ", 6, 0, xfield, xfieldm, tmaxfd, stemax, deemax, xepsil, stmin);
301
302
303}
304
305//_____________________________________________________________________________
306void AliCRT::MakeBranch(Option_t* option, const char *file)
307{
308 //
309 // Specific CRT branches
310 //
311 // Create Tree branches for the CRT.
312 Int_t buffersize = 400;
313 char branchname[10];
314 sprintf(branchname,"%s",GetName());
315
316 AliDetector::MakeBranch(option,file);
317
318 const char *cD = strstr(option,"D");
319
320 if (cD) {
321 digits = new AliCRTdigit();
322 MakeBranchInTree(gAlice->TreeD(), branchname, "AliCRTdigit",
323 digits, buffersize, 1, file);
324 }
325
326}
327//_____________________________________________________________________________