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 ///////////////////////////////////////////////////////////////////////
20 // (V-zero) detector version 7 as designed by the Lyon and //
21 // Mexico groups and Carlos Perez Lara from Pontificia Universidad //
22 // Catolica del Peru //
23 // All comments should be sent to Brigitte CHEYNIS: //
24 // b.cheynis@ipnl.in2p3.fr //
25 // Geometry of April 2006 done with ROOT geometrical modeler //
26 // V0R (now V0C) sits between Z values -89.5 and -84.8 cm //
27 // V0L (now V0A) sits between Z values +338.5 and +342.5 cm //
28 // New coordinate system has been implemented in october 2003 //
30 ///////////////////////////////////////////////////////////////////////
32 // --- Standard libraries ---
33 #include <Riostream.h>
35 // --- ROOT libraries ---
36 #include <TClonesArray.h>
38 #include <TVirtualMC.h>
39 #include <TParticle.h>
41 #include <TGeoManager.h>
42 #include <TGeoMatrix.h>
43 #include <TGeoMaterial.h>
44 #include <TGeoMedium.h>
45 #include <TGeoVolume.h>
48 #include "TGeoCompositeShape.h"
50 // --- AliRoot header files ---
54 #include "AliVZEROLoader.h"
55 #include "AliVZEROdigit.h"
56 #include "AliVZEROhit.h"
57 #include "AliVZEROv7.h"
62 //_____________________________________________________________________________
63 AliVZEROv7:: AliVZEROv7():AliVZERO(),
73 fV0CLidThickness(0.30),
74 fV0CCellThickness(2.00),
75 fV0CBoxThickness(4.70),
76 fV0COffsetFibers(1.0),
77 fV0CLightYield(93.75),
78 fV0CLightAttenuation(0.05),
111 fV0AnMeters(fV0AR6*0.01),
112 fV0ALightYield(93.75),
113 fV0ALightAttenuation(0.05),
117 // Standard default constructor
120 //_____________________________________________________________________________
121 AliVZEROv7::AliVZEROv7(const char *name, const char *title):AliVZERO(name,title),
131 fV0CLidThickness(0.30),
132 fV0CCellThickness(2.00),
133 fV0CBoxThickness(4.70),
134 fV0COffsetFibers(1.0),
135 fV0CLightYield(93.75),
136 fV0CLightAttenuation(0.05),
169 fV0AnMeters(fV0AR6*0.01),
170 fV0ALightYield(93.75),
171 fV0ALightAttenuation(0.05),
177 // Standard constructor for V-zero Detector version 7
179 AliDebug(2,"Create VZERO object ");
181 // fVersion = 7; // version number
183 // // V0C Parameters related to geometry: All in cm
184 // fV0CHeight1 = 2.5; // height of cell 1
185 // fV0CHeight2 = 4.4; // height of cell 2
186 // fV0CHeight3 = 7.4; // height of cell 3
187 // fV0CHeight4 = 12.5; // height of cell 4
188 // fV0CRMin = 4.6; // inner radius of box
189 // fV0CRBox = 38.0; // outer radius of box
190 // fV0CLidThickness = 0.30; // thickness of Carbon lid
191 // fV0CCellThickness = 2.00; // thickness of elementary cell
192 // fV0CBoxThickness = 4.70; // thickness of V0C Box
193 // fV0COffsetFibers = 1.0; // offset to output fibers
194 // // V0C Parameters related to light output
195 // fV0CLightYield = 93.75; // Light yield in BC408 (93.75 eV per photon)
196 // fV0CLightAttenuation = 0.05; // Light attenuation in fiber (0.05 per meter)
197 // fV0CnMeters = 15.0; // Number of meters of clear fibers to PM
198 // fV0CFibToPhot = 0.3; // Attenuation at fiber-photocathode interface
200 // // V0A Parameters related to geometry: All in cm
201 // fV0AR0 = 4.2; // Radius of hole
202 // fV0AR1 = 7.6; // Maximun radius of 1st cell
203 // fV0AR2 = 13.8; // Maximun radius of 2nd cell
204 // fV0AR3 = 22.7; // Maximun radius of 3rd cell
205 // fV0AR4 = 41.3; // Maximun radius of 4th cell
206 // fV0AR5 = 43.3; // Radius circunscrite to innermost octagon
207 // fV0AR6 = 68.0; // Radius circunscrite to outtermost octagon
208 // fV0ASciWd = 2.5; // Scintillator thickness
209 // fV0APlaWd = 0.5; // Plates thinckness
210 // fV0APlaAl = 0.06; // Plates AlMg3 thinckness
211 // fV0AOctWd = 0.75; // Innermost octagon thickness
212 // fV0AOctH1 = 1.0; // Height of innermost octagon
213 // fV0AOctH2 = 2.0; // Height of outtermost octagon
214 // fV0AFibRd = 0.1; // Radius of Fiber
215 // fV0AFraWd = 0.2; // Support Frame thickness
216 // fV0APMBWd = 24.6; // Width of PM Box
217 // fV0APMBHt = 22.0; // Height of PM Box
218 // fV0APMBTh = 7.1; // Thickness of PM Box
219 // fV0APMBWdW = 0.3; // Thickness of PM Box Side1 Wall
220 // fV0APMBHtW = 1.0; // Thickness of PM Box Side2 Wall
221 // fV0APMBThW = 0.3; // Thickness of PM Box Top Wall
222 // fV0APMBAng = 30.0; // Angle between PM Box and Support
223 // fV0APMTR1 = 2.44; // PMT Glass
224 // fV0APMTR2 = 2.54; // PMT Glass
225 // fV0APMTR3 = 2.54; // PMT Cover
226 // fV0APMTR4 = 2.70; // PMT Cover
227 // fV0APMTH = 10.0; // PMT Height
228 // fV0APMTB = 1.0; // PMT Basis
229 // fV0APlaEx = 4.4; // Plates Extension height
230 // fV0ABasHt = 2.0; // Basis Height
231 // // V0A Parameters related to light output
232 // fV0ALightYield = 93.75; // Light yield in BC404
233 // fV0ALightAttenuation = 0.05; // Light attenuation in WLS fiber, per meter
234 // fV0AnMeters = fV0AR6*0.01; // Tentative value, in meters
235 // fV0AFibToPhot = 0.3; // Attenuation at fiber-photocathode interface
237 //_____________________________________________________________________________
239 void AliVZEROv7::BuildGeometry()
243 //_____________________________________________________________________________
244 void AliVZEROv7::CreateGeometry()
246 // Constructs TGeo geometry
248 AliDebug(2,"VZERO ConstructGeometry");
249 TGeoVolume *top = gGeoManager->GetVolume("ALIC");
251 ///////////////////////////////////////////////////////////////////////////
252 // Construct the geometry of V0C Detector. Brigitte CHEYNIS
254 const int kColorVZERO = kGreen;
255 TGeoMedium *medV0CAlu = gGeoManager->GetMedium("VZERO_V0CAlu");
256 TGeoMedium *medV0CCar = gGeoManager->GetMedium("VZERO_V0CCar");
257 TGeoMedium *medV0CSci = gGeoManager->GetMedium("VZERO_V0CSci");
258 TGeoVolume *v0RI = new TGeoVolumeAssembly("V0RI");
259 Float_t heightRight, r4Right;
260 Float_t zdet = 90.0 - 0.5 - fV0CBoxThickness/2.0;
261 heightRight = fV0CHeight1 + fV0CHeight2 + fV0CHeight3 + fV0CHeight4;
262 r4Right = fV0CRMin + heightRight + 3.0*0.2; // 3 spacings of 2mm between rings
264 // Creation of carbon lids (3.0 mm thick) to keep V0C box shut :
266 partube[0] = fV0CRMin;
267 partube[1] = fV0CRBox;
268 partube[2] = fV0CLidThickness/2.0;
269 TGeoTube *sV0CA = new TGeoTube("V0CA", partube[0], partube[1], partube[2]);
270 TGeoVolume *v0CA = new TGeoVolume("V0CA",sV0CA,medV0CCar);
271 TGeoTranslation *tr2 = new TGeoTranslation(0.,0., fV0CBoxThickness/2.0-partube[2]);
272 TGeoTranslation *tr3 = new TGeoTranslation(0.,0.,-fV0CBoxThickness/2.0+partube[2]);
273 v0RI->AddNode(v0CA,1,tr2);
274 v0RI->AddNode(v0CA,2,tr3);
275 v0CA->SetLineColor(kYellow);
277 // Creation of aluminum rings 3.0 mm thick to maintain the v0RI pieces :
278 partube[0] = fV0CRMin - 0.3;
279 partube[1] = fV0CRMin;
280 partube[2] = fV0CBoxThickness/2.0;
281 TGeoTube *sV0IR = new TGeoTube("V0IR", partube[0], partube[1], partube[2]);
282 TGeoVolume *v0IR = new TGeoVolume("V0IR",sV0IR,medV0CAlu);
283 v0RI->AddNode(v0IR,1,0);
284 v0IR->SetLineColor(kYellow);
285 partube[0] = fV0CRBox;
286 partube[1] = fV0CRBox + 0.3;
287 partube[2] = fV0CBoxThickness/2.0;
288 TGeoTube *sV0ER = new TGeoTube("V0ER", partube[0], partube[1], partube[2]);
289 TGeoVolume *v0ER = new TGeoVolume("V0ER",sV0ER,medV0CAlu);
290 v0RI->AddNode(v0ER,1,0);
291 v0ER->SetLineColor(kYellow);
293 // Creation of assembly V0R0 of scintillator cells within one sector
294 TGeoVolume *v0R0 = new TGeoVolumeAssembly("V0R0");
296 // Elementary cell of ring 1 - right part - :
297 // (cells of ring 1 will be shifted by 2.0 cm backwards to output fibers)
298 Float_t r1Right = fV0CRMin + fV0CHeight1;
299 Float_t offset = fV0CBoxThickness/2.0 - fV0CLidThickness - fV0CCellThickness/2.0;
301 partubs[0] = fV0CRMin;
302 partubs[1] = r1Right;
303 partubs[2] = fV0CCellThickness/2.0;
304 partubs[3] = 90.0-22.5;
305 partubs[4] = 135.0-22.5;
306 TGeoTubeSeg *sV0R1 = new TGeoTubeSeg("V0R1", partubs[0], partubs[1], partubs[2],
307 partubs[3], partubs[4]);
308 TGeoVolume *v0R1 = new TGeoVolume("V0R1",sV0R1,medV0CSci);
309 TGeoTranslation *tr4 = new TGeoTranslation(0.,0.,-offset);
310 v0R0->AddNode(v0R1,1,tr4);
311 v0R1->SetLineColor(kColorVZERO);
313 // Elementary cell of ring 2 - right part - :
314 // (cells of ring 2 will be shifted by 1.0 cm backwards to output fibers)
315 Float_t r2Right = r1Right + fV0CHeight2;
316 partubs[0] = r1Right; // must be equal to 7.1
317 partubs[1] = r2Right; // must be equal to 11.5
318 TGeoTubeSeg *sV0R2 = new TGeoTubeSeg("V0R2", partubs[0], partubs[1], partubs[2],
319 partubs[3], partubs[4]);
320 TGeoVolume *v0R2 = new TGeoVolume("V0R2",sV0R2,medV0CSci);
321 TGeoTranslation *tr5 = new TGeoTranslation(0.0,0.2,-offset + fV0COffsetFibers);
322 v0R0->AddNode(v0R2,1,tr5);
323 v0R2->SetLineColor(kColorVZERO);
325 // Ring 3 - right part - :
326 r2Right = r2Right + 0.2;
327 Float_t r3Right = r2Right + fV0CHeight3;
328 partubs[0] = r2Right; // must be equal to 11.7
329 partubs[1] = r3Right; // must be equal to 19.1
330 partubs[3] = 90.0-22.5;
331 partubs[4] = 112.5-22.5;
332 TGeoTubeSeg *sV0R3 = new TGeoTubeSeg("V0R3", partubs[0], partubs[1], partubs[2],
333 partubs[3], partubs[4]);
334 TGeoVolume *v0R3 = new TGeoVolume("V0R3",sV0R3,medV0CSci);
335 TGeoTranslation *tr6 = new TGeoTranslation(0.,0.2,-offset + 2.0*fV0COffsetFibers);
336 v0R0->AddNode(v0R3,1,tr6);
337 v0R3->SetLineColor(kColorVZERO);
338 partubs[3] = 112.5-22.5;
339 partubs[4] = 135.0-22.5;
340 TGeoTubeSeg *sV0R4 = new TGeoTubeSeg("V0R4", partubs[0], partubs[1], partubs[2],
341 partubs[3], partubs[4]);
342 TGeoVolume *v0R4 = new TGeoVolume("V0R4",sV0R4,medV0CSci);
343 v0R0->AddNode(v0R4,1,tr6);
344 v0R4->SetLineColor(kColorVZERO);
346 // Ring 4 - right part - :
347 Float_t x = TMath::ATan(3.5/257.5) * ((180./TMath::Pi()));
348 r3Right = r3Right + 0.2 + 0.2; // + 0.2 because no shift in translation here !!
349 partubs[0] = r3Right; // must be equal to 19.5
350 partubs[1] = r4Right; // must be equal to 32.0
351 partubs[3] = 90.0-22.5+x;
352 partubs[4] = 112.5-22.5-x;
353 TGeoTubeSeg *sV0R5 = new TGeoTubeSeg("V0R5", partubs[0], partubs[1], partubs[2],
354 partubs[3], partubs[4]);
355 TGeoVolume *v0R5 = new TGeoVolume("V0R5",sV0R5,medV0CSci);
356 TGeoTranslation *tr7 = new TGeoTranslation(0.,0.0,-offset + 2.0*fV0COffsetFibers);
357 v0R0->AddNode(v0R5,1,tr7);
358 v0R5->SetLineColor(kColorVZERO);
359 partubs[3] = 112.5-22.5+x;
360 partubs[4] = 135.0-22.5-x;
361 TGeoTubeSeg *sV0R6 = new TGeoTubeSeg("V0R6", partubs[0], partubs[1], partubs[2],
362 partubs[3], partubs[4]);
363 TGeoVolume *v0R6 = new TGeoVolume("V0R6",sV0R6,medV0CSci);
364 v0R0->AddNode(v0R6,1,tr7);
365 v0R6->SetLineColor(kColorVZERO);
367 Float_t phiDeg= 180./4.;
368 Int_t nsecR = 1; // number of sectors in right part of V0
369 for (phi = 22.5; phi < 360.0; phi = phi + phiDeg) {
370 TGeoRotation *rot1 = new TGeoRotation("rot1", 90.0, +phi, 90., 90.+phi, 0.0, 0.0 );
371 v0RI->AddNode(v0R0,nsecR,rot1);
375 ///////////////////////////////////////////////////////////////////////////
376 // Construct the geometry of V0A Detector. Carlos PEREZ, PUCP
378 const int kV0AColorSci = 5;
379 const int kV0AColorPlaIn = 3;
380 const int kV0AColorPlaOu = 41;
381 const int kV0AColorOct = 7;
382 const int kV0AColorFra = 6;
383 const int kV0AColorFib = 11;
384 const int kV0AColorPMG = 1;
385 const int kV0AColorPMA = 2;
386 const int kV0AColorBas = 20;
387 TGeoMedium *medV0ASci = gGeoManager->GetMedium("VZERO_V0ASci");
388 TGeoMedium *medV0APlaIn = gGeoManager->GetMedium("VZERO_V0APlaIn");
389 TGeoMedium *medV0APlaOu = gGeoManager->GetMedium("VZERO_V0APlaOu");
390 TGeoMedium *medV0ASup = gGeoManager->GetMedium("VZERO_V0ALuc");
391 TGeoMedium *medV0AFra = gGeoManager->GetMedium("VZERO_V0ALuc");
392 TGeoMedium *medV0AFib = gGeoManager->GetMedium("VZERO_V0AFib");
393 TGeoMedium *medV0APMGlass = gGeoManager->GetMedium("VZERO_V0APMG");
394 TGeoMedium *medV0APMAlum = gGeoManager->GetMedium("VZERO_V0APMA");
395 TGeoMedium *medV0ABas = gGeoManager->GetMedium("VZERO_V0ALuc");
396 double pi = TMath::Pi();
397 double sin225 = TMath::Sin(pi/8.);
398 double cos225 = TMath::Cos(pi/8.);
399 double ctg225 = cos225/sin225;
400 double sin45 = TMath::Sin(pi/4.); // lucky: Sin45=Cos45
403 ////////////////////////////
404 /// Definition of one sector
405 TGeoVolume *v0ASec = new TGeoVolumeAssembly("V0ASec");
407 /// For boolean sustraction
408 double preShape = 0.2;
409 for (int i=0;i<2;i++) {
410 v0APts[0+8*i] = fV0AR0-fV0AFraWd/2.-preShape; v0APts[1+8*i] = -preShape;
411 v0APts[2+8*i] = fV0AR0-fV0AFraWd/2.-preShape; v0APts[3+8*i] = fV0AFraWd/2.;
412 v0APts[4+8*i] = fV0AR4+fV0AFraWd/2.+preShape; v0APts[5+8*i] = fV0AFraWd/2.;
413 v0APts[6+8*i] = fV0AR4+fV0AFraWd/2.+preShape; v0APts[7+8*i] = -preShape;
415 new TGeoArb8("sV0ACha1",fV0ASciWd/1.5,v0APts);
416 for (int i=0;i<2;i++) {
417 v0APts[0+8*i] = fV0AR0*sin45-preShape;
418 v0APts[1+8*i] = (fV0AR0-fV0AFraWd)*sin45-preShape;
419 v0APts[2+8*i] = (fV0AR0-fV0AFraWd/2.)*sin45-preShape;
420 v0APts[3+8*i] = (fV0AR0-fV0AFraWd/2.)*sin45;
421 v0APts[4+8*i] = (fV0AR4+fV0AFraWd/2.)*sin45+preShape;
422 v0APts[5+8*i] = (fV0AR4+fV0AFraWd/2.)*sin45+2.*preShape;
423 v0APts[6+8*i] = (fV0AR4+fV0AFraWd)*sin45+preShape;
424 v0APts[7+8*i] = fV0AR4*sin45+preShape;
426 new TGeoArb8("sV0ACha2", fV0ASciWd/2.+2.*preShape, v0APts);
427 new TGeoCompositeShape("sV0ACha","sV0ACha1+sV0ACha2");
430 TGeoVolume *v0AFra = new TGeoVolumeAssembly("V0AFra");
431 for (int i=0;i<2;i++) {
432 v0APts[0+8*i] = fV0AR0-fV0AFraWd/2.; v0APts[1+8*i] = 0.;
433 v0APts[2+8*i] = fV0AR0-fV0AFraWd/2.; v0APts[3+8*i] = fV0AFraWd/2.;
434 v0APts[4+8*i] = fV0AR4+fV0AFraWd/2.; v0APts[5+8*i] = fV0AFraWd/2.;
435 v0APts[6+8*i] = fV0AR4+fV0AFraWd/2.; v0APts[7+8*i] = 0.;
437 TGeoArb8 *sV0AFraB1 = new TGeoArb8("sV0AFraB1",fV0ASciWd/2.,v0APts);
438 TGeoVolume *v0AFraB1 = new TGeoVolume("V0AFraB1",sV0AFraB1,medV0AFra);
439 for (int i=0;i<2;i++) {
440 v0APts[0+8*i] = fV0AR0*sin45;
441 v0APts[1+8*i] = (fV0AR0-fV0AFraWd)*sin45;
442 v0APts[2+8*i] = (fV0AR0-fV0AFraWd/2.)*sin45;
443 v0APts[3+8*i] = (fV0AR0-fV0AFraWd/2.)*sin45;
444 v0APts[4+8*i] = (fV0AR4+fV0AFraWd/2.)*sin45;
445 v0APts[5+8*i] = (fV0AR4+fV0AFraWd/2.)*sin45;
446 v0APts[6+8*i] = (fV0AR4+fV0AFraWd)*sin45;
447 v0APts[7+8*i] = fV0AR4*sin45;
449 TGeoArb8 *sV0AFraB2 = new TGeoArb8("sV0AFraB2", fV0ASciWd/2., v0APts);
450 TGeoVolume *v0AFraB2 = new TGeoVolume("V0AFraB2",sV0AFraB2,medV0AFra);
451 v0AFraB1->SetLineColor(kV0AColorFra); v0AFraB2->SetLineColor(kV0AColorFra);
452 v0AFra->AddNode(v0AFraB1,1);
453 v0AFra->AddNode(v0AFraB2,1); // Prefer 2 GeoObjects insted of 3 GeoMovements
454 new TGeoTubeSeg( "sV0AFraR1b", fV0AR0-fV0AFraWd/2.,
455 fV0AR0+fV0AFraWd/2., fV0ASciWd/2., 0, 45);
456 new TGeoTubeSeg( "sV0AFraR2b", fV0AR1-fV0AFraWd/2.,
457 fV0AR1+fV0AFraWd/2., fV0ASciWd/2., 0, 45);
458 new TGeoTubeSeg( "sV0AFraR3b", fV0AR2-fV0AFraWd/2.,
459 fV0AR2+fV0AFraWd/2., fV0ASciWd/2., 0, 45);
460 new TGeoTubeSeg( "sV0AFraR4b", fV0AR3-fV0AFraWd/2.,
461 fV0AR3+fV0AFraWd/2., fV0ASciWd/2., 0, 45);
462 new TGeoTubeSeg( "sV0AFraR5b", fV0AR4-fV0AFraWd/2.,
463 fV0AR4+fV0AFraWd/2., fV0ASciWd/2., 0, 45);
464 TGeoCompositeShape *sV0AFraR1 = new TGeoCompositeShape("sV0AFraR1","sV0AFraR1b-sV0ACha");
465 TGeoCompositeShape *sV0AFraR2 = new TGeoCompositeShape("sV0AFraR2","sV0AFraR2b-sV0ACha");
466 TGeoCompositeShape *sV0AFraR3 = new TGeoCompositeShape("sV0AFraR3","sV0AFraR3b-sV0ACha");
467 TGeoCompositeShape *sV0AFraR4 = new TGeoCompositeShape("sV0AFraR4","sV0AFraR4b-sV0ACha");
468 TGeoCompositeShape *sV0AFraR5 = new TGeoCompositeShape("sV0AFraR5","sV0AFraR5b-sV0ACha");
469 TGeoVolume *v0AFraR1 = new TGeoVolume("V0AFraR1",sV0AFraR1,medV0AFra);
470 TGeoVolume *v0AFraR2 = new TGeoVolume("V0AFraR2",sV0AFraR2,medV0AFra);
471 TGeoVolume *v0AFraR3 = new TGeoVolume("V0AFraR3",sV0AFraR3,medV0AFra);
472 TGeoVolume *v0AFraR4 = new TGeoVolume("V0AFraR4",sV0AFraR4,medV0AFra);
473 TGeoVolume *v0AFraR5 = new TGeoVolume("V0AFraR5",sV0AFraR5,medV0AFra);
474 v0AFraR1->SetLineColor(kV0AColorFra); v0AFraR2->SetLineColor(kV0AColorFra);
475 v0AFraR3->SetLineColor(kV0AColorFra); v0AFraR4->SetLineColor(kV0AColorFra);
476 v0AFraR5->SetLineColor(kV0AColorFra);
477 v0AFra->AddNode(v0AFraR1,1);
478 v0AFra->AddNode(v0AFraR2,1);
479 v0AFra->AddNode(v0AFraR3,1);
480 v0AFra->AddNode(v0AFraR4,1);
481 v0AFra->AddNode(v0AFraR5,1);
482 v0ASec->AddNode(v0AFra,1);
484 /// Sensitive scintilator
485 TGeoVolume *v0ASci = new TGeoVolumeAssembly("V0ASci");
486 new TGeoTubeSeg( "sV0AR1b", fV0AR0+fV0AFraWd/2.,
487 fV0AR1-fV0AFraWd/2., fV0ASciWd/2., 0, 45);
488 new TGeoTubeSeg( "sV0AR2b", fV0AR1+fV0AFraWd/2.,
489 fV0AR2-fV0AFraWd/2., fV0ASciWd/2., 0, 45);
490 new TGeoTubeSeg( "sV0AR3b", fV0AR2+fV0AFraWd/2.,
491 fV0AR3-fV0AFraWd/2., fV0ASciWd/2., 0, 45);
492 new TGeoTubeSeg( "sV0AR4b", fV0AR3+fV0AFraWd/2.,
493 fV0AR4-fV0AFraWd/2., fV0ASciWd/2., 0, 45);
494 TGeoCompositeShape *sV0AR1 = new TGeoCompositeShape("sV0AR1","sV0AR1b-sV0ACha");
495 TGeoCompositeShape *sV0AR2 = new TGeoCompositeShape("sV0AR2","sV0AR2b-sV0ACha");
496 TGeoCompositeShape *sV0AR3 = new TGeoCompositeShape("sV0AR3","sV0AR3b-sV0ACha");
497 TGeoCompositeShape *sV0AR4 = new TGeoCompositeShape("sV0AR4","sV0AR4b-sV0ACha");
498 TGeoVolume *v0L1 = new TGeoVolume("V0L1",sV0AR1,medV0ASci);
499 TGeoVolume *v0L2 = new TGeoVolume("V0L2",sV0AR2,medV0ASci);
500 TGeoVolume *v0L3 = new TGeoVolume("V0L3",sV0AR3,medV0ASci);
501 TGeoVolume *v0L4 = new TGeoVolume("V0L4",sV0AR4,medV0ASci);
502 v0L1->SetLineColor(kV0AColorSci); v0L2->SetLineColor(kV0AColorSci);
503 v0L3->SetLineColor(kV0AColorSci); v0L4->SetLineColor(kV0AColorSci);
504 v0ASec->AddNode(v0L1,1);
505 v0ASec->AddNode(v0L2,1);
506 v0ASec->AddNode(v0L3,1);
507 v0ASec->AddNode(v0L4,1);
509 /// Non-sensitive scintilator
510 for (int i=0;i<2;i++) {
511 v0APts[0+8*i] = fV0AR4;
512 v0APts[1+8*i] = fV0AFraWd/2.;
513 v0APts[2+8*i] = fV0AR4*sin45;
514 v0APts[3+8*i] = (fV0AR4-fV0AFraWd)*sin45;
515 v0APts[4+8*i] = fV0AR5/cos225*sin45+fV0AFraWd/2.*sin225;
516 v0APts[5+8*i] = fV0AR5/cos225*sin45-fV0AFraWd/2.*cos225;
517 v0APts[6+8*i] = fV0AR5/cos225-fV0AFraWd/2./ctg225;
518 v0APts[7+8*i] = fV0AFraWd/2.;
520 new TGeoArb8("sV0AR5S1", fV0ASciWd/2., v0APts);
521 new TGeoTubeSeg("sV0AR5S2", fV0AR4-(v0APts[6]-v0APts[0]),
522 fV0AR4+fV0AFraWd/2., fV0ASciWd/2.+2*preShape, 0, 45);
523 TGeoCompositeShape *sV0AR5 = new TGeoCompositeShape("V0AR5","(sV0AR5S1 - sV0AR5S2)");
524 TGeoVolume *v0AR5 = new TGeoVolume("V0AR5",sV0AR5,medV0ASci);
525 v0AR5->SetLineColor(kV0AColorSci);
526 v0ASci->AddNode(v0AR5,1);
527 v0ASec->AddNode(v0ASci,1);
529 /// Segment of innermost octagon
530 TGeoVolume *v0ASup = new TGeoVolumeAssembly("V0ASup");
531 for (int i=0;i<2;i++) {
532 v0APts[0+8*i] = (fV0AR5-fV0AOctH1)/cos225; v0APts[1+8*i] = 0.;
533 v0APts[2+8*i] = (fV0AR5-fV0AOctH1)/cos225*sin45; v0APts[3+8*i] = (fV0AR5-fV0AOctH1)/cos225*sin45;
534 v0APts[4+8*i] = fV0AR5/cos225*sin45; v0APts[5+8*i] = fV0AR5/cos225*sin45;
535 v0APts[6+8*i] = fV0AR5/cos225; v0APts[7+8*i] = 0.;
537 TGeoArb8 *sV0AOct1 = new TGeoArb8("sV0AOct1", fV0AOctWd/2., v0APts);
538 TGeoVolume *v0AOct1 = new TGeoVolume("V0AOct1",sV0AOct1,medV0ASup);
539 v0AOct1->SetLineColor(kV0AColorOct);
540 v0ASup->AddNode(v0AOct1,1,new TGeoTranslation(0,0,(fV0ASciWd+fV0AOctWd)/2.));
541 v0ASup->AddNode(v0AOct1,2,new TGeoTranslation(0,0,-(fV0ASciWd+fV0AOctWd)/2.));
543 /// Segment of outtermost octagon
544 for (int i=0;i<2;i++) {
545 v0APts[0+8*i] = (fV0AR6-fV0AOctH2)/cos225; v0APts[1+8*i] = 0.;
546 v0APts[2+8*i] = (fV0AR6-fV0AOctH2)/cos225*sin45; v0APts[3+8*i] = (fV0AR6-fV0AOctH2)/cos225*sin45;
547 v0APts[4+8*i] = fV0AR6/cos225*sin45; v0APts[5+8*i] = fV0AR6/cos225*sin45;
548 v0APts[6+8*i] = fV0AR6/cos225; v0APts[7+8*i] = 0.;
550 TGeoArb8 *sV0AOct2 = new TGeoArb8("sV0AOct2", (fV0ASciWd+2*fV0AOctWd)/2., v0APts);
551 TGeoVolume *v0AOct2 = new TGeoVolume("V0AOct2", sV0AOct2,medV0ASup);
552 v0AOct2->SetLineColor(kV0AColorOct);
553 v0ASup->AddNode(v0AOct2,1);
554 v0ASec->AddNode(v0ASup,1);
557 v0APts[ 0] = v0APts[ 2] = -12.5;
558 v0APts[ 1] = v0APts[ 7] = (fV0ASciWd+fV0AOctWd)/2.-0.01;
559 v0APts[ 3] = v0APts[ 5] = (fV0ASciWd+fV0AOctWd)/2.+0.01;
560 v0APts[ 4] = v0APts[ 6] = +12.5;
561 v0APts[ 8] = v0APts[10] = -0.5;
562 v0APts[ 9] = v0APts[15] = 0.;
563 v0APts[11] = v0APts[13] = 0.25;
564 v0APts[12] = v0APts[14] = +0.5;
565 TGeoArb8 *sV0AFib = new TGeoArb8("sV0AFib", (fV0AR6-fV0AR5-fV0AOctH2-0.006)/2., v0APts);
566 TGeoVolume *v0AFib1 = new TGeoVolume("V0AFib1",sV0AFib,medV0AFib);
567 TGeoVolume *v0AFib = new TGeoVolumeAssembly("V0AFib");
568 TGeoRotation *rot = new TGeoRotation("rot");
570 rot->RotateZ(-90.+22.5);
571 v0AFib->AddNode(v0AFib1,1,rot);
572 rot = new TGeoRotation("rot");
575 rot->RotateZ(-90.+22.5);
576 v0AFib->SetLineColor(kV0AColorFib);
577 v0AFib->AddNode(v0AFib1,2,rot);
578 v0ASec->AddNode(v0AFib,1,new TGeoTranslation((fV0AR6-fV0AOctH2+fV0AR5)*cos225/2.,
579 (fV0AR6-fV0AOctH2+fV0AR5)*sin225/2., 0));
582 for (int i=0;i<2;i++) {
583 v0APts[0+8*i] = fV0AR0; v0APts[1+8*i] = 0.;
584 v0APts[2+8*i] = fV0AR0*sin45; v0APts[3+8*i] = fV0AR0*sin45;
585 v0APts[4+8*i] = fV0AR6/cos225 * sin45; v0APts[5+8*i] = fV0AR6/cos225*sin45;
586 v0APts[6+8*i] = fV0AR6/cos225; v0APts[7+8*i] = 0.;
588 TGeoArb8 *sV0APlaIn = new TGeoArb8("sV0APlaIn", (fV0APlaWd-2*fV0APlaAl)/2., v0APts);
589 TGeoVolume *v0APlaIn = new TGeoVolume("V0APlaIn", sV0APlaIn, medV0APlaIn);
590 TGeoArb8 *sV0APlaOu = new TGeoArb8("sV0APlaOu", fV0APlaAl/2., v0APts);
591 TGeoVolume *v0APlaOu = new TGeoVolume("V0APlaOu", sV0APlaOu, medV0APlaOu);
592 v0APlaIn->SetLineColor(kV0AColorPlaIn); v0APlaOu->SetLineColor(kV0AColorPlaOu);
593 TGeoVolume *v0APla = new TGeoVolumeAssembly("V0APla");
594 v0APla->AddNode(v0APlaIn,1);
595 v0APla->AddNode(v0APlaOu,1,new TGeoTranslation(0,0,(fV0APlaWd-fV0APlaAl)/2.));
596 v0APla->AddNode(v0APlaOu,2,new TGeoTranslation(0,0,-(fV0APlaWd-fV0APlaAl)/2.));
597 v0ASec->AddNode(v0APla,1,new TGeoTranslation(0,0,(fV0ASciWd+2*fV0AOctWd+fV0APlaWd)/2.));
598 v0ASec->AddNode(v0APla,2,new TGeoTranslation(0,0,-(fV0ASciWd+2*fV0AOctWd+fV0APlaWd)/2.));
601 TGeoVolume* v0APM = new TGeoVolumeAssembly("V0APM");
602 new TGeoBBox("sV0APMB1", fV0APMBWd/2., fV0APMBHt/2., fV0APMBTh/2.);
603 new TGeoBBox("sV0APMB2", fV0APMBWd/2.-fV0APMBWdW, fV0APMBHt/2.-fV0APMBHtW, fV0APMBTh/2.-fV0APMBThW);
604 TGeoCompositeShape *sV0APMB = new TGeoCompositeShape("sV0APMB","sV0APMB1-sV0APMB2");
605 TGeoVolume *v0APMB = new TGeoVolume("V0APMB",sV0APMB, medV0APMAlum);
606 v0APMB->SetLineColor(kV0AColorPMA);
607 v0APM->AddNode(v0APMB,1);
610 TGeoTube *sV0APMT1 = new TGeoTube("sV0APMT1", fV0APMTR1, fV0APMTR2, fV0APMTH/2.);
611 TGeoVolume *v0APMT1 = new TGeoVolume("V0APMT1", sV0APMT1, medV0APMGlass);
612 TGeoTube *sV0APMT2 = new TGeoTube("sV0APMT2", fV0APMTR3, fV0APMTR4, fV0APMTH/2.);
613 TGeoVolume *v0APMT2 = new TGeoVolume("V0APMT2", sV0APMT2, medV0APMAlum);
614 TGeoVolume *v0APMT = new TGeoVolumeAssembly("V0APMT");
615 TGeoTube *sV0APMTT = new TGeoTube("sV0APMTT", 0., fV0APMTR4, fV0APMTB/2.);
616 TGeoVolume *v0APMTT = new TGeoVolume("V0APMTT", sV0APMTT, medV0APMAlum);
617 v0APMT1->SetLineColor(kV0AColorPMG);
618 v0APMT2->SetLineColor(kV0AColorPMA);
619 v0APMTT->SetLineColor(kV0AColorPMA);
620 rot = new TGeoRotation("rot", 90, 0, 180, 0, 90, 90);
621 v0APMT->AddNode(v0APMT1,1,rot);
622 v0APMT->AddNode(v0APMT2,1,rot);
623 v0APMT->AddNode(v0APMTT,1,new TGeoCombiTrans(0,-(fV0APMTH+fV0APMTB)/2.,0,rot));
624 double autoShift = (fV0APMBWd-2*fV0APMBWdW)/4.;
625 v0APM->AddNode(v0APMT, 1, new TGeoTranslation(-1.5*autoShift, 0, 0));
626 v0APM->AddNode(v0APMT, 2, new TGeoTranslation(-0.5*autoShift, 0, 0));
627 v0APM->AddNode(v0APMT, 3, new TGeoTranslation(+0.5*autoShift, 0, 0));
628 v0APM->AddNode(v0APMT, 4, new TGeoTranslation(+1.5*autoShift, 0, 0));
631 rot = new TGeoRotation("rot");
632 rot->RotateX(90-fV0APMBAng);
633 rot->RotateZ(-90.+22.5);
634 double cosAngPMB = TMath::Cos(fV0APMBAng*TMath::DegToRad());
635 double sinAngPMB = TMath::Sin(fV0APMBAng*TMath::DegToRad());
636 double shiftZ = fV0APMBHt/2. * cosAngPMB
637 - ( fV0ASciWd + 2 * fV0AOctWd + 2 * fV0APlaWd )/2. - fV0APMBTh/2. * sinAngPMB;
638 double shiftR = fV0AR6 + fV0APMBHt/2. * sinAngPMB + fV0APMBTh/2. * cosAngPMB;
639 v0ASec->AddNode(v0APM,1, new TGeoCombiTrans( shiftR*cos225, shiftR*sin225, shiftZ, rot));
641 /// End of sector definition
642 ////////////////////////////
644 /// Replicate sectors
645 TGeoVolume *v0LE = new TGeoVolumeAssembly("V0LE");
646 for(int i=0; i<8; i++) {
647 TGeoRotation *rot = new TGeoRotation("rot", 90., i*45.+90, 90., 90.+i*45.+90, 0., 0.);
648 v0LE->AddNode(v0ASec,i+1,rot); /// modificacion +1 anhadido
651 /// Basis Construction
652 rot = new TGeoRotation("rot"); rot->RotateX(90-fV0APMBAng); rot->RotateZ(-22.5);
653 TGeoCombiTrans *pos1 = new TGeoCombiTrans("pos1", shiftR*sin225, shiftR*cos225, shiftZ, rot);
654 pos1->RegisterYourself();
655 for (int i=0;i<2;i++) {
656 v0APts[0+8*i] = fV0AR6/cos225*sin45; v0APts[1+8*i] = fV0AR6/cos225*sin45;
657 v0APts[2+8*i] = 0; v0APts[3+8*i] = fV0AR6/cos225;
658 v0APts[4+8*i] = 0; v0APts[5+8*i] = fV0AR6/cos225+fV0APlaEx;
659 v0APts[6+8*i] = fV0AR6/cos225-(fV0AR6/cos225+fV0APlaEx)/ctg225;
660 v0APts[7+8*i] = fV0AR6/cos225+fV0APlaEx;
662 new TGeoArb8("sV0APlaExIn1", (fV0APlaWd-2*fV0APlaAl)/2., v0APts);
663 new TGeoArb8("sV0APlaExOu1", fV0APlaAl/2., v0APts);
664 TGeoCompositeShape *sV0APlaExIn = new TGeoCompositeShape("sV0APlaExIn","sV0APlaExIn1-sV0APMB1:pos1");
665 TGeoVolume *v0APlaExIn = new TGeoVolume("V0APlaExIn", sV0APlaExIn, medV0APlaIn);
666 TGeoCompositeShape *sV0APlaExOu = new TGeoCompositeShape("sV0APlaExOu","sV0APlaExOu1-sV0APMB1:pos1");
667 TGeoVolume *v0APlaExOu = new TGeoVolume("V0APlaExOu", sV0APlaExOu, medV0APlaOu);
668 v0APlaExIn->SetLineColor(kV0AColorPlaIn); v0APlaExOu->SetLineColor(kV0AColorPlaOu);
669 TGeoVolume *v0APlaEx = new TGeoVolumeAssembly("V0APlaEx");
670 v0APlaEx->AddNode(v0APlaExIn,1);
671 v0APlaEx->AddNode(v0APlaExOu,1,new TGeoTranslation(0,0,(fV0APlaWd-fV0APlaAl)/2.));
672 v0APlaEx->AddNode(v0APlaExOu,2,new TGeoTranslation(0,0,-(fV0APlaWd-fV0APlaAl)/2.));
673 for (int i=0;i<2;i++) {
674 v0APts[0+8*i] = fV0AR6/cos225-(fV0AR6/cos225+fV0APlaEx)/ctg225-fV0ABasHt*sin45;
675 v0APts[1+8*i] = fV0AR6/cos225+fV0APlaEx-fV0ABasHt*sin45;
676 v0APts[2+8*i] = 0; v0APts[3+8*i] = fV0AR6/cos225+fV0APlaEx-fV0ABasHt;
677 v0APts[4+8*i] = 0; v0APts[5+8*i] = fV0AR6/cos225+fV0APlaEx;
678 v0APts[6+8*i] = fV0AR6/cos225-(fV0AR6/cos225+fV0APlaEx)/ctg225;
679 v0APts[7+8*i] = fV0AR6/cos225+fV0APlaEx;
681 new TGeoArb8("sV0ABas1", (fV0ASciWd+2*fV0AOctWd)/2., v0APts);
682 TGeoCompositeShape *sV0ABas = new TGeoCompositeShape("sV0ABas","sV0ABas1-sV0APMB1:pos1");
683 TGeoVolume *v0ABas = new TGeoVolume("V0ABas", sV0ABas, medV0ABas);
684 v0ABas->SetLineColor(kV0AColorBas);
685 TGeoVolume *v0ABasis = new TGeoVolumeAssembly("V0ABasis");
686 rot = new TGeoRotation("rot",90.,180.,90.,90.,0.,0.);
687 v0ABasis->AddNode(v0APlaEx,1, new TGeoTranslation(0,0,(fV0ASciWd+2*fV0AOctWd+fV0APlaWd)/2.));
688 v0ABasis->AddNode(v0APlaEx,2, new TGeoTranslation(0,0,-(fV0ASciWd+2*fV0AOctWd+fV0APlaWd)/2.));
689 v0ABasis->AddNode(v0APlaEx,3, new TGeoCombiTrans(0,0,(fV0ASciWd+2*fV0AOctWd+fV0APlaWd)/2.,rot));
690 v0ABasis->AddNode(v0APlaEx,4, new TGeoCombiTrans(0,0,-(fV0ASciWd+2*fV0AOctWd+fV0APlaWd)/2.,rot));
691 v0ABasis->AddNode(v0ABas,1);
692 v0ABasis->AddNode(v0ABas,2,rot);
693 rot = new TGeoRotation("rot");
695 v0LE->AddNode(v0ABasis,1,rot);
697 // Adding detectors to top volume
698 TGeoVolume *vZERO = new TGeoVolumeAssembly("VZERO");
699 vZERO->AddNode(v0RI,1,new TGeoTranslation(0, 0, -zdet));
700 // V0A position according to TB decision 13/12/2005
701 vZERO->AddNode(v0LE,1,new TGeoTranslation(0, 0, +327.5));
702 top->AddNode(vZERO,1);
705 //_____________________________________________________________________________
706 void AliVZEROv7::AddAlignableVolumes() const
709 // Create entries for alignable volumes associating the symbolic volume
710 // name with the corresponding volume path. Needs to be syncronized with
711 // eventual changes in the geometry.
713 TString vpC = "/ALIC_1/VZERO_1/V0RI_1";
714 TString vpA = "/ALIC_1/VZERO_1/V0LE_1";
715 TString snC = "VZERO/V0C";
716 TString snA = "VZERO/V0A";
718 if(!gGeoManager->SetAlignableEntry(snC.Data(),vpC.Data()))
719 AliFatal(Form("Alignable entry %s not created. Volume path %s not valid", snC.Data(),vpC.Data()));
720 if(!gGeoManager->SetAlignableEntry(snA.Data(),vpA.Data()))
721 AliFatal(Form("Alignable entry %s not created. Volume path %s not valid", snA.Data(),vpA.Data()));
725 //_____________________________________________________________________________
726 void AliVZEROv7::CreateMaterials()
729 // Creates materials used for geometry
731 AliDebug(2,"Create materials");
732 // Parameters for simulation scope
733 Int_t fieldType = gAlice->Field()->Integ(); // Field type
734 Double_t maxField = gAlice->Field()->Max(); // Field max.
735 Double_t maxBending = 10; // Max Angle
736 Double_t maxStepSize = 0.01; // Max step size
737 Double_t maxEnergyLoss = 1; // Max Delta E
738 Double_t precision = 0.003; // Precision
739 Double_t minStepSize = 0.003; // Minimum step size
742 Double_t a, z, radLength, absLength;
743 Float_t density, as[4], zs[4], ws[4];
745 // Parameters for V0CPrePlates: Aluminium
752 AliMaterial( id, "V0CAlu", a, z, density, radLength, absLength, 0, 0);
753 AliMedium(id, "V0CAlu", id, 1, fieldType, maxField, maxBending, maxStepSize,
754 maxEnergyLoss, precision, minStepSize);
756 // Parameters for V0CPlates: Carbon
763 AliMaterial(id, "V0CCar", a, z, density, radLength, absLength, 0, 0);
764 AliMedium(id, "V0CCar", id, 1, fieldType, maxField, maxBending, maxStepSize,
765 maxEnergyLoss, precision, minStepSize);
767 // Parameters for V0Cscintillator: BC408
768 as[0] = 1.00794; as[1] = 12.011;
769 zs[0] = 1.; zs[1] = 6.;
770 ws[0] = 1.; ws[1] = 1.;
773 AliMixture(id, "V0CSci", as, zs, density, -2, ws);
774 AliMedium(id,"V0CSci", id, 1, fieldType, maxField, maxBending, maxStepSize,
775 maxEnergyLoss, precision, minStepSize);
777 // Parameters for V0Ascintilator: BC404
778 as[0] = 1.00794; as[1] = 12.011;
779 zs[0] = 1.; zs[1] = 6.;
780 ws[0] = 5.21; ws[1] = 4.74;
783 AliMixture(id, "V0ASci", as, zs, density, -2, ws);
784 AliMedium(id, "V0ASci", id, 1, fieldType, maxField, maxBending, maxStepSize,
785 maxEnergyLoss, precision, minStepSize);
787 // Parameters for V0ALuc: Lucita but for the simulation BC404
788 as[0] = 1.00794; as[1] = 12.011;
789 zs[0] = 1.; zs[1] = 6.;
790 ws[0] = 5.21; ws[1] = 4.74;
793 AliMixture(id, "V0ALuc", as, zs, density, -2, ws);
794 AliMedium(id, "V0ALuc", id, 1, fieldType, maxField, maxBending, maxStepSize,
795 maxEnergyLoss, precision, minStepSize);
797 // Parameters for V0Aplate: EuroComposite - EC-PI 626 PS - AlMg3
798 as[0] = 26.982; as[1] = 24.305;
799 zs[0] = 13.; zs[1] = 12.;
800 ws[0] = 1.; ws[1] = 3.;
803 AliMixture(id, "V0APlaOu", as, zs, density, -2, ws);
804 AliMedium(id, "V0APlaOu", id, 1, fieldType, maxField, maxBending, maxStepSize,
805 maxEnergyLoss, precision, minStepSize);
807 // Parameters for V0Aplate: EuroComposite - EC-PI 626 PS - EC-PI 6.4-42
808 as[0] = 1.00794; as[1] = 12.011;
809 zs[0] = 1.; zs[1] = 6.;
810 ws[0] = 5.21; ws[1] = 4.74;
813 AliMixture(id, "V0APlaIn", as, zs, density, -2, ws);
814 AliMedium(id, "V0APlaIn", id, 1, fieldType, maxField, maxBending, maxStepSize,
815 maxEnergyLoss, precision, minStepSize);
817 // Parameters for V0Afiber: BC9929AMC Plastic Scintillating Fiber from Saint-Gobain
818 as[0] = 1.00794; as[1] = 12.011;
819 zs[0] = 1.; zs[1] = 6.;
820 ws[0] = 4.82; ws[1] = 4.85;
823 AliMixture(id, "V0AFib", as, zs, density, -2, ws);
824 AliMedium(id, "V0AFib", id, 1, fieldType, maxField, maxBending, maxStepSize,
825 maxEnergyLoss, precision, minStepSize);
827 // Parameters for V0APMA: Aluminium
834 AliMaterial(id, "V0APMA", a, z, density, radLength, absLength, 0, 0);
835 AliMedium(id, "V0APMA", id, 1, fieldType, maxField, maxBending, maxStepSize,
836 maxEnergyLoss, precision, minStepSize);
838 // Parameters for V0APMG: Glass for the simulation Aluminium
845 AliMaterial(id, "V0APMG", a, z, density, radLength, absLength, 0, 0);
846 AliMedium(id, "V0APMG", id, 1, fieldType, maxField, maxBending, maxStepSize,
847 maxEnergyLoss, precision, minStepSize);
850 //_____________________________________________________________________________
851 void AliVZEROv7::DrawModule() const
853 // Drawing is done in DrawVZERO.C
855 AliDebug(2,"DrawModule");
859 //_____________________________________________________________________________
860 void AliVZEROv7::DrawGeometry()
862 // Drawing of V0 geometry done in DrawV0.C
864 AliDebug(2,"DrawGeometry");
867 //_____________________________________________________________________________
868 void AliVZEROv7::Init()
870 // Initialises version of the VZERO Detector given in Config
871 // Just prints an information message
873 // AliInfo(Form("VZERO version %d initialized \n",IsVersion()));
875 AliDebug(1,"VZERO version 7 initialized");
879 //_____________________________________________________________________________
880 void AliVZEROv7::StepManager()
882 // Step Manager, called at each step
886 static Float_t hits[21];
887 static Float_t eloss, tlength;
888 static Int_t nPhotonsInStep = 0;
889 static Int_t nPhotons = 0;
890 static Int_t numStep = 0;
892 Float_t destep, step;
895 // We keep only charged tracks :
896 if ( !gMC->TrackCharge() || !gMC->IsTrackAlive() ) return;
898 vol[0] = gMC->CurrentVolOffID(1, vol[1]);
899 vol[2] = gMC->CurrentVolID(copy);
901 static Int_t idV0R1 = gMC->VolId("V0R1");
902 static Int_t idV0L1 = gMC->VolId("V0L1");
903 static Int_t idV0R2 = gMC->VolId("V0R2");
904 static Int_t idV0L2 = gMC->VolId("V0L2");
905 static Int_t idV0R3 = gMC->VolId("V0R3");
906 static Int_t idV0L3 = gMC->VolId("V0L3");
907 static Int_t idV0R4 = gMC->VolId("V0R4");
908 static Int_t idV0L4 = gMC->VolId("V0L4");
909 static Int_t idV0R5 = gMC->VolId("V0R5");
910 static Int_t idV0R6 = gMC->VolId("V0R6");
911 bool hitOnV0C = true;
913 double lightAttenuation;
916 if ( gMC->CurrentVolID(copy) == idV0R1 || gMC->CurrentVolID(copy) == idV0L1 )
918 else if ( gMC->CurrentVolID(copy) == idV0R2 || gMC->CurrentVolID(copy) == idV0L2 )
920 else if ( gMC->CurrentVolID(copy) == idV0R3 || gMC->CurrentVolID(copy) == idV0R4
921 || gMC->CurrentVolID(copy) == idV0L3 ) ringNumber = 3;
922 else if ( gMC->CurrentVolID(copy) == idV0R5 || gMC->CurrentVolID(copy) == idV0R6
923 || gMC->CurrentVolID(copy) == idV0L4 ) ringNumber = 4;
926 if (gMC->CurrentVolID(copy) == idV0L1 || gMC->CurrentVolID(copy) == idV0L2 ||
927 gMC->CurrentVolID(copy) == idV0L3 || gMC->CurrentVolID(copy) == idV0L4)
929 destep = gMC->Edep();
930 step = gMC->TrackStep();
932 lightYield = fV0CLightYield;
933 lightAttenuation = fV0CLightAttenuation;
934 nMeters = fV0CnMeters;
935 fibToPhot = fV0CFibToPhot;
937 lightYield = fV0ALightYield;
938 lightAttenuation = fV0ALightAttenuation;
939 nMeters = fV0AnMeters;
940 fibToPhot = fV0AFibToPhot;
942 nPhotonsInStep = Int_t(destep / (lightYield *1e-9) );
943 nPhotonsInStep = gRandom->Poisson(nPhotonsInStep);
946 if ( gMC->IsTrackEntering() ) {
947 nPhotons = nPhotonsInStep;
948 gMC->TrackPosition(fTrackPosition);
949 gMC->TrackMomentum(fTrackMomentum);
950 Float_t pt = TMath::Sqrt( fTrackMomentum.Px() * fTrackMomentum.Px()
951 + fTrackMomentum.Py() * fTrackMomentum.Py() );
952 TParticle *par = gAlice->GetMCApp()->Particle(gAlice->GetMCApp()->GetCurrentTrackNumber());
953 hits[0] = fTrackPosition.X();
954 hits[1] = fTrackPosition.Y();
955 hits[2] = fTrackPosition.Z();
956 hits[3] = Float_t (gMC->TrackPid());
957 hits[4] = gMC->TrackTime();
958 hits[5] = gMC->TrackCharge();
959 hits[6] = fTrackMomentum.Theta()*TMath::RadToDeg();
960 hits[7] = fTrackMomentum.Phi()*TMath::RadToDeg();
961 hits[8] = ringNumber;
963 hits[10] = fTrackMomentum.P();
964 hits[11] = fTrackMomentum.Px();
965 hits[12] = fTrackMomentum.Py();
966 hits[13] = fTrackMomentum.Pz();
967 hits[14] = par->Vx();
968 hits[15] = par->Vy();
969 hits[16] = par->Vz();
973 //////////////////////////
974 ///// Display V0A geometry
977 // of = fopen("V0A.out", "a");
978 // // x, y, z, ringnumber, cellid
979 // fprintf( of, "%f %f %f %f %d \n", hits[0], hits[1], hits[2], hits[8], GetCellId (vol, hits) );
982 //////////////////////////
984 nPhotons = nPhotons + nPhotonsInStep;
985 if( gMC->IsTrackExiting() || gMC->IsTrackStop() || gMC->IsTrackDisappeared()){
986 nPhotons = nPhotons - Int_t((Float_t(nPhotons) * lightAttenuation * nMeters));
987 nPhotons = nPhotons - Int_t( Float_t(nPhotons) * fibToPhot);
991 hits[20] = GetCellId (vol, hits);
992 AddHit(gAlice->GetMCApp()->GetCurrentTrackNumber(), vol, hits);
1002 //_____________________________________________________________________________
1003 void AliVZEROv7::AddHit(Int_t track, Int_t *vol, Float_t *hits)
1007 TClonesArray &lhits = *fHits;
1008 new(lhits[fNhits++]) AliVZEROhit(fIshunt,track,vol,hits);
1011 //_____________________________________________________________________________
1012 void AliVZEROv7::AddDigits(Int_t *tracks, Int_t* digits)
1014 // Adds a VZERO digit
1016 TClonesArray &ldigits = *fDigits;
1017 new(ldigits[fNdigits++]) AliVZEROdigit(tracks, digits);
1020 //_____________________________________________________________________________
1021 void AliVZEROv7::MakeBranch(Option_t *option)
1023 // Creates new branches in the current Root Tree
1025 char branchname[10];
1026 sprintf(branchname,"%s",GetName());
1027 AliDebug(2,Form("fBufferSize = %d",fBufferSize));
1028 const char *cH = strstr(option,"H");
1029 if (fHits && TreeH() && cH) {
1030 TreeH()->Branch(branchname,&fHits, fBufferSize);
1031 AliDebug(2,Form("Making Branch %s for hits",branchname));
1033 const char *cD = strstr(option,"D");
1034 if (fDigits && fLoader->TreeD() && cD) {
1035 fLoader->TreeD()->Branch(branchname,&fDigits, fBufferSize);
1036 AliDebug(2,Form("Making Branch %s for digits",branchname));
1040 //_____________________________________________________________________________
1041 Int_t AliVZEROv7::GetCellId(Int_t *vol, Float_t *hits)
1043 // Returns Id of scintillator cell
1044 // Right side from 0 to 47
1045 // Left side from 48 to 79
1046 // hits[8] = ring number (1 to 4)
1047 // vol[1] = copy number (1 to 8)
1049 Int_t index = vol[1];
1050 Int_t ringNumber = Int_t(hits[8]);
1053 Float_t phi = Float_t(TMath::ATan2(Double_t(hits[1]),Double_t(hits[0])) );
1054 Float_t kRaddeg = 180.0/TMath::Pi();
1055 phi = kRaddeg * phi;
1057 if (index < 7) index = index + 8;
1059 if (hits[2] < 0.0) {
1060 if(ringNumber < 3) {
1061 index = (index - 7) + ( ( ringNumber - 1 ) * 8);
1062 } else if (ringNumber >= 3) {
1063 if ( gMC->CurrentVolID(vol[1]) == gMC->VolId("V0R3") || gMC->CurrentVolID(vol[1])
1064 == gMC->VolId("V0R5") ) index = (index*2-14)+((ringNumber-2)*16);
1065 if ( gMC->CurrentVolID(vol[1]) == gMC->VolId("V0R4") || gMC->CurrentVolID(vol[1])
1066 == gMC->VolId("V0R6") ) index = (index*2-13)+((ringNumber-2)*16);
1069 } else if (hits[2] > 0.0) {
1070 index = (index - 7 + 48) + ( ( ringNumber - 1 ) * 8);