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 1.3.2.1 2002/07/12 12:32:50 gamez
19 Division of CRT1 corrected
21 Revision 1.3 2002/07/10 15:57:04 gamez
22 CreateHall() removed, and new Molasse volumes
24 Revision 1.2 2002/07/09 08:45:35 hristov
25 Old style include files needed on HP (aCC)
27 Revision 1.1 2002/06/16 17:08:19 hristov
33 ///////////////////////////////////////////////////////////////////////////////
35 // ALICE Cosmic Ray Trigger //
37 // This class contains the functions for version 0 of the ALICE Cosmic Ray //
42 // Arturo Fernandez <afernand@fcfm.buap.mx>
43 // Enrique Gamez <egamez@fcfm.buap.mx>
45 // Universidad Autonoma de Puebla
50 <img src="picts/AliCRTv0Class.gif">
53 <p>The responsible person for this module is
54 <a href="mailto:egamez@fcfm.buap.mx">Enrique Gamez</a>.
60 ///////////////////////////////////////////////////////////////////////////////
65 #include <TGeometry.h>
68 #include <TLorentzVector.h>
71 #include "AliCRTConstants.h"
81 //_____________________________________________________________________________
82 AliCRTv0::AliCRTv0() : AliCRT()
85 // Default constructor for CRT
90 //_____________________________________________________________________________
91 AliCRTv0::AliCRTv0(const char *name, const char *title)
95 // Standard constructor for CRT
99 <img src="picts/AliCRTv0.gif">
104 //_____________________________________________________________________________
105 void AliCRTv0::BuildGeometry()
110 //_____________________________________________________________________________
111 void AliCRTv0::CreateGeometry()
114 // Create geometry for the CRT array
117 Int_t idrotm[2499]; // The rotation matrix.
119 Int_t * idtmed = fIdtmed->GetArray() - 1099 ;
125 // Exactly above the hall
128 tspar[1] = 1170. + 375.;
129 tspar[2] = (1900.+1150.)/2.+100.;
132 gMC->Gsvolu("CMO1", "TUBS", idtmed[1123], tspar, 5);
133 gMC->Gspos("CMO1", 1, "ALIC", 0., 500., 1900.-tspar[2]+400., 0, "MANY");
137 tbox[1] = (4420. - 1670.)/2.;
138 tbox[2] = (1900.+1150.)/2. + 200.;
139 gMC->Gsvolu("CM12", "BOX", idtmed[1123], tbox, 3);
140 gMC->Gspos("CM12", 1, "ALIC", 0., 4420. -tbox[1], 1900.-tbox[2]+400., 0, "MANY");
142 AliMatrix(idrotm[2003], 0., 0., 90., 0., 90., 90.);
145 tube[0] = 455. + 100.;
146 tube[1] = 555. + 375.;
147 tube[2] = (5150. - 1166.)/2.;
148 gMC->Gsvolu("CMO2", "TUBE", idtmed[1123], tube, 3);
149 gMC->Gspos("CMO2", 1, "ALIC", -2100., 4420.-tube[2], 0., idrotm[2003], "MANY");
155 tube[2] = (5150. - 690.)/2.;
156 gMC->Gsvolu("CMO3", "TUBE", idtmed[1123], tube, 3);
157 gMC->Gspos("CMO3", 1, "ALIC", 375., 4420.-tube[2], 1900.+2987.7, idrotm[2003], "MANY");
158 // Behind the PGC2 up to the end of the M. volume.
160 tbox[1] = 2575. + 95.;
161 tbox[2] = (12073. - 1900.+2987.7+650.)/2.;
162 gMC->Gsvolu("CMO7", "BOX", idtmed[1123], tbox, 3);
163 gMC->Gspos("CMO7", 1, "ALIC", 0., 4420.-tbox[1], 1900.+2987.7+650.+tbox[2], 0, "MANY");
165 // Along the PX24 , upper part.
168 tube[2] = 2575. - 1300. + 95.;
169 gMC->Gsvolu("CMO4", "TUBE", idtmed[1123], tube, 3);
170 gMC->Gspos("CMO4", 1, "ALIC", 0., 404.+1300.+tube[2], -2300., idrotm[2003], "MANY");
172 // Along the PX24 , lower part
176 tspar[3] = kRaddeg*TMath::ASin(1070./1150.);
177 tspar[4] = 360. - tspar[3];
178 gMC->Gsvolu("CMO5", "TUBS", idtmed[1123], tspar, 5);
179 gMC->Gspos("CMO5", 1, "ALIC", 0., 404., -2300., idrotm[2003], "MANY");
182 tbox[1] = 2575. + 95.;
184 gMC->Gsvolu("CMO6", "BOX", idtmed[1123], tbox, 3);
185 gMC->Gspos("CMO6", 1, "ALIC", 0., 4420.-tbox[1], -3550.-tbox[2], 0, "MANY");
188 // On the right side of th hall
189 tbox[0] = (12073. - 1250.)/2.;
190 tbox[1] = 2575. + 95.;
191 tbox[2] = (8437.7+650.)/2.;
192 gMC->Gsvolu("CMO8", "BOX", idtmed[1123], tbox, 3);
193 gMC->Gspos("CMO8", 1, "ALIC", 1250.+tbox[0], 4420.-tbox[1], -3550.+tbox[2], 0, "MANY");
195 // on the left side of the hall, behind
196 tbox[0] = (12073. - 2755.)/2.;
197 tbox[1] = 2575. + 95.;
198 tbox[2] = (8437.7+650.)/2.;
199 gMC->Gsvolu("CMO9", "BOX", idtmed[1123], tbox, 3);
200 gMC->Gspos("CMO9", 1, "ALIC", -2755.-tbox[0], 4420.-tbox[1], -3550.+tbox[2], 0, "MANY");
203 // Molasse betwen the PX24 & PM25 on the left side.
204 tbox[0] = (2755. - 1250.)/2.;
205 tbox[1] = 2575. + 95.;
206 tbox[2] = (3550. - 555.)/2.;
207 gMC->Gsvolu("CM10", "BOX", idtmed[1123], tbox, 3);
208 gMC->Gspos("CM10", 1, "ALIC", -1250.-tbox[0], 4420.-tbox[1], -tbox[2]-555., 0, "MANY");
211 // Molasse betwen the PGC2 & PM25 on the left side.
212 tbox[0] = (2755. - 1250.)/2.;
213 tbox[1] = 2575. + 95.;
214 tbox[2] = (1900.+2987.7 - 555. + 650.)/2.;
215 gMC->Gsvolu("CM11", "BOX", idtmed[1123], tbox, 3);
216 gMC->Gspos("CM11", 1, "ALIC", -1250.-tbox[0], 4420.-tbox[1], 555.+tbox[2], 0, "MANY");
222 box[0] = AliCRTConstants::fgCageLenght/2.; // Half Length of the box along the X axis, cm.
223 box[1] = AliCRTConstants::fgCageHeight/2.; // Half Length of the box along the Y axis, cm.
224 box[2] = AliCRTConstants::fgCageWidth/2.; // Half Length of the box along the Z axis, cm.
227 // Define the Scintillators. as a big box.
229 scint[0] = AliCRTConstants::fgActiveAreaLenght/2.; // Half Length in X
230 scint[1] = AliCRTConstants::fgActiveAreaHeight/2.; // Half Length in Y
231 scint[2] = AliCRTConstants::fgActiveAreaWidth/2.; // Half Length in Z
232 gMC->Gsvolu("CRT1", "BOX ", idtmed[1112], scint, 3); // Scintillators
233 // Divide the modules in 2 planes.
234 gMC->Gsdvn("CRT2", "CRT1", 2, 2);
235 // Now divide each plane in 8 palettes
236 gMC->Gsdvn("CRT3", "CRT2", 8, 3);
240 // Define the coordinates where the draw will begin.
245 // we'll start dawing from the center.
250 Float_t gapY = 30.; // 30 cms. above the barrel.
251 // For the height we staimate the from the center of the ceiling,
252 // if were a cilinder, must be about 280cm.
253 Float_t barrel = 790.; // Barrel radius.
254 Float_t height = barrel + gapY - 30.;
255 Float_t initY = height;
259 // we'll start dawing from the center.
262 // Put 4 modules on the top of the magnet
264 for ( Int_t i = 1 ; i <= 4 ; i++ ) {
265 gMC->Gspos("CRT1", i, "ALIC", initX, initY, (i-step)*box[2], 0, "ONLY");
269 // Modules on the barrel sides.
270 // Because the openenig angle for each face is 22.5, and if we want to
271 // put the modules right in the middle
272 Float_t xtragap = 10.;
273 Float_t initXside = (height+xtragap)*TMath::Sin(2*22.5*kDegrad); //rigth side
274 Float_t initYside = (height+xtragap)*TMath::Cos(2*22.5*kDegrad);
276 // Put 4 modules on the left side of the magnet
277 // The rotation matrix parameters, for the left side.
278 AliMatrix(idrotm[232], 90., 315., 90., 45., 0., 337.5);
280 for ( Int_t i = 1 ; i <= 4 ; i++ ) {
281 gMC->Gspos("CRT1", i+4, "ALIC", initXside, initYside, (i-stepl)*box[2],
282 idrotm[232], "ONLY");
286 // Put 4 modules on the right side of the magnet
287 // The rotation matrix parameters for the right side.
288 AliMatrix(idrotm[231], 90., 45., 90., 315., 180., 202.5);
290 for ( Int_t i = 1 ; i <= 4 ; i++ ) {
291 gMC->Gspos("CRT1", i+8, "ALIC", -initXside, initYside, (i-stepr)*box[2],
292 idrotm[231], "ONLY");
298 //_____________________________________________________________________________
299 void AliCRTv0::CreateMaterials()
305 // Use the standard materials.
306 AliCRT::CreateMaterials();
310 //_____________________________________________________________________________
311 void AliCRTv0::DrawDetector()
316 //_____________________________________________________________________________
317 void AliCRTv0::DrawModule()
320 // Draw a shaded view of the L3 magnet
322 cout << "AliCRTv0::DrawModule() : Drawing the module" << endl;
324 gMC->Gsatt("*", "seen", -1);
325 gMC->Gsatt("alic", "seen", 0);
327 gMC->Gsatt("ALIC","seen",0);
328 gMC->Gsatt("L3MO","seen",1); // L3 Magnet
329 gMC->Gsatt("CRT1","seen",1); // Scintillators
331 // Draw the molasse volumes
332 gMC->Gsatt("CMO1","seen",0); // Exactly above the HALL
333 gMC->Gsatt("CMO2","seen",0); // Molasse, along the PM25
334 gMC->Gsatt("CMO3","seen",0); // molasse along the PGC2
335 gMC->Gsatt("CMO4","seen",0); // Molasse, behind the PX24 upper part
336 gMC->Gsatt("CMO5","seen",0); // molasse behind px24, lower part
337 gMC->Gsatt("CMO6","seen",0); // behind the PX24
338 gMC->Gsatt("CMO7","seen",0); // behind the PGC2
339 gMC->Gsatt("CMO8","seen",0); // on the right side.
340 gMC->Gsatt("CMO9","seen",0); // on the left side.
341 gMC->Gsatt("CM10","seen",0); // betwen PX24 & PM25.
342 gMC->Gsatt("CM11","seen",0); // betwen PGC2 & PM25.
343 gMC->Gsatt("CM12","seen",0); // box above the hall.
345 gMC->Gdopt("hide", "on");
346 gMC->Gdopt("edge","off");
347 gMC->Gdopt("shad", "on");
348 gMC->Gsatt("*", "fill", 7);
349 gMC->SetClipBox("ALIC", 0, 3000, -3000, 3000, -6000, 6000);
351 gMC->Gdraw("alic", 40, 30, 0, 10, 9.5, .009, .009);
352 gMC->Gdhead(1111, "View of CRT(ACORDE)");
353 gMC->Gdman(18, 4, "MAN");
358 //_____________________________________________________________________________
359 void AliCRTv0::Init()
362 // Initialise L3 magnet after it has been built
366 printf("\n%s: ",ClassName());
367 for(i=0;i<35;i++) printf("*");
368 printf(" CRTv0_INIT ");
369 for(i=0;i<35;i++) printf("*");
370 printf("\n%s: ",ClassName());
372 // Here the CRTv0 initialisation code (if any!)
373 for(i=0;i<80;i++) printf("*");
379 //_____________________________________________________________________________
380 void AliCRTv0::StepManager()
383 // Called for every step in the CRT Detector
388 // Check if this is the last step of the track in the current volume
389 Bool_t laststepvol = gMC->IsTrackEntering();
392 gMC->TrackPosition(xyz);
394 gMC->TrackMomentum(pxyz);
396 if ( laststepvol && (strcmp(gMC->CurrentVolName(),"CRT1") == 0) ) {
397 if ( gMC->TrackCharge() != 0 || gMC->TrackPid() == kGamma ) {
402 if ( (gMC->TrackPid() != kMuonPlus) && (gMC->TrackPid() != kMuonMinus)) {
403 hits[1] = -(Float_t)gMC->TrackPid();
405 hits[1] = (Float_t)gMC->TrackPid();
409 gMC->TrackPosition(xyz);
411 gMC->TrackMomentum(pxyz);
413 hits[2] = xyz[0]; // X pit
414 hits[3] = xyz[1]; // Y pit
415 hits[4] = xyz[2]; // Z pit
416 hits[5] = pxyz[0]; // pxug
417 hits[6] = pxyz[1]; // pyug
418 hits[7] = pxyz[2]; // pzug
420 hits[8] = gMC->GetMedium(); // layer
421 hits[9] = vert[0]; // xver
422 hits[10] = vert[1]; // yver
423 hits[11] = vert[2]; // zver
428 AddHit(gAlice->CurrentTrack(),vol, hits);