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 <TGeoMaterial.h>
43 #include <TGeoMedium.h>
44 #include <TGeoVolume.h>
47 #include "TGeoCompositeShape.h"
49 // --- AliRoot header files ---
53 #include "AliVZEROLoader.h"
54 #include "AliVZEROdigit.h"
55 #include "AliVZEROhit.h"
56 #include "AliVZEROv7.h"
61 //_____________________________________________________________________________
62 AliVZEROv7:: AliVZEROv7():AliVZERO(),
72 fV0CLidThickness(0.30),
73 fV0CCellThickness(2.00),
74 fV0CBoxThickness(4.70),
75 fV0COffsetFibers(1.0),
76 fV0CLightYield(93.75),
77 fV0CLightAttenuation(0.05),
110 fV0AnMeters(fV0AR6*0.01),
111 fV0ALightYield(93.75),
112 fV0ALightAttenuation(0.05),
116 // Standard default constructor
119 //_____________________________________________________________________________
120 AliVZEROv7::AliVZEROv7(const char *name, const char *title):AliVZERO(name,title),
130 fV0CLidThickness(0.30),
131 fV0CCellThickness(2.00),
132 fV0CBoxThickness(4.70),
133 fV0COffsetFibers(1.0),
134 fV0CLightYield(93.75),
135 fV0CLightAttenuation(0.05),
168 fV0AnMeters(fV0AR6*0.01),
169 fV0ALightYield(93.75),
170 fV0ALightAttenuation(0.05),
176 // Standard constructor for V-zero Detector version 7
178 AliDebug(2,"Create VZERO object ");
180 // fVersion = 7; // version number
182 // // V0C Parameters related to geometry: All in cm
183 // fV0CHeight1 = 2.5; // height of cell 1
184 // fV0CHeight2 = 4.4; // height of cell 2
185 // fV0CHeight3 = 7.4; // height of cell 3
186 // fV0CHeight4 = 12.5; // height of cell 4
187 // fV0CRMin = 4.6; // inner radius of box
188 // fV0CRBox = 38.0; // outer radius of box
189 // fV0CLidThickness = 0.30; // thickness of Carbon lid
190 // fV0CCellThickness = 2.00; // thickness of elementary cell
191 // fV0CBoxThickness = 4.70; // thickness of V0C Box
192 // fV0COffsetFibers = 1.0; // offset to output fibers
193 // // V0C Parameters related to light output
194 // fV0CLightYield = 93.75; // Light yield in BC408 (93.75 eV per photon)
195 // fV0CLightAttenuation = 0.05; // Light attenuation in fiber (0.05 per meter)
196 // fV0CnMeters = 15.0; // Number of meters of clear fibers to PM
197 // fV0CFibToPhot = 0.3; // Attenuation at fiber-photocathode interface
199 // // V0A Parameters related to geometry: All in cm
200 // fV0AR0 = 4.2; // Radius of hole
201 // fV0AR1 = 7.6; // Maximun radius of 1st cell
202 // fV0AR2 = 13.8; // Maximun radius of 2nd cell
203 // fV0AR3 = 22.7; // Maximun radius of 3rd cell
204 // fV0AR4 = 41.3; // Maximun radius of 4th cell
205 // fV0AR5 = 43.3; // Radius circunscrite to innermost octagon
206 // fV0AR6 = 68.0; // Radius circunscrite to outtermost octagon
207 // fV0ASciWd = 2.5; // Scintillator thickness
208 // fV0APlaWd = 0.5; // Plates thinckness
209 // fV0APlaAl = 0.06; // Plates AlMg3 thinckness
210 // fV0AOctWd = 0.75; // Innermost octagon thickness
211 // fV0AOctH1 = 1.0; // Height of innermost octagon
212 // fV0AOctH2 = 2.0; // Height of outtermost octagon
213 // fV0AFibRd = 0.1; // Radius of Fiber
214 // fV0AFraWd = 0.2; // Support Frame thickness
215 // fV0APMBWd = 24.6; // Width of PM Box
216 // fV0APMBHt = 22.0; // Height of PM Box
217 // fV0APMBTh = 7.1; // Thickness of PM Box
218 // fV0APMBWdW = 0.3; // Thickness of PM Box Side1 Wall
219 // fV0APMBHtW = 1.0; // Thickness of PM Box Side2 Wall
220 // fV0APMBThW = 0.3; // Thickness of PM Box Top Wall
221 // fV0APMBAng = 30.0; // Angle between PM Box and Support
222 // fV0APMTR1 = 2.44; // PMT Glass
223 // fV0APMTR2 = 2.54; // PMT Glass
224 // fV0APMTR3 = 2.54; // PMT Cover
225 // fV0APMTR4 = 2.70; // PMT Cover
226 // fV0APMTH = 10.0; // PMT Height
227 // fV0APMTB = 1.0; // PMT Basis
228 // fV0APlaEx = 4.4; // Plates Extension height
229 // fV0ABasHt = 2.0; // Basis Height
230 // // V0A Parameters related to light output
231 // fV0ALightYield = 93.75; // Light yield in BC404
232 // fV0ALightAttenuation = 0.05; // Light attenuation in WLS fiber, per meter
233 // fV0AnMeters = fV0AR6*0.01; // Tentative value, in meters
234 // fV0AFibToPhot = 0.3; // Attenuation at fiber-photocathode interface
236 //_____________________________________________________________________________
238 void AliVZEROv7::BuildGeometry()
242 //_____________________________________________________________________________
243 void AliVZEROv7::CreateGeometry()
245 // Constructs TGeo geometry
247 AliDebug(2,"VZERO ConstructGeometry");
248 TGeoVolume *top = gGeoManager->GetVolume("ALIC");
250 ///////////////////////////////////////////////////////////////////////////
251 // Construct the geometry of V0C Detector. Brigitte CHEYNIS
253 const int kColorVZERO = kGreen;
254 TGeoMedium *medV0CAlu = gGeoManager->GetMedium("VZERO_V0CAlu");
255 TGeoMedium *medV0CCar = gGeoManager->GetMedium("VZERO_V0CCar");
256 TGeoMedium *medV0CSci = gGeoManager->GetMedium("VZERO_V0CSci");
257 TGeoVolume *v0RI = new TGeoVolumeAssembly("V0RI");
258 Float_t heightRight, r4Right;
259 Float_t zdet = 90.0 - 0.5 - fV0CBoxThickness/2.0;
260 heightRight = fV0CHeight1 + fV0CHeight2 + fV0CHeight3 + fV0CHeight4;
261 r4Right = fV0CRMin + heightRight + 3.0*0.2; // 3 spacings of 2mm between rings
263 // Creation of carbon lids (3.0 mm thick) to keep V0C box shut :
265 partube[0] = fV0CRMin;
266 partube[1] = fV0CRBox;
267 partube[2] = fV0CLidThickness/2.0;
268 TGeoTube *sV0CA = new TGeoTube("V0CA", partube[0], partube[1], partube[2]);
269 TGeoVolume *v0CA = new TGeoVolume("V0CA",sV0CA,medV0CCar);
270 TGeoTranslation *tr2 = new TGeoTranslation(0.,0., fV0CBoxThickness/2.0-partube[2]);
271 TGeoTranslation *tr3 = new TGeoTranslation(0.,0.,-fV0CBoxThickness/2.0+partube[2]);
272 v0RI->AddNode(v0CA,1,tr2);
273 v0RI->AddNode(v0CA,2,tr3);
274 v0CA->SetLineColor(kYellow);
276 // Creation of aluminum rings 3.0 mm thick to maintain the v0RI pieces :
277 partube[0] = fV0CRMin - 0.3;
278 partube[1] = fV0CRMin;
279 partube[2] = fV0CBoxThickness/2.0;
280 TGeoTube *sV0IR = new TGeoTube("V0IR", partube[0], partube[1], partube[2]);
281 TGeoVolume *v0IR = new TGeoVolume("V0IR",sV0IR,medV0CAlu);
282 v0RI->AddNode(v0IR,1,0);
283 v0IR->SetLineColor(kYellow);
284 partube[0] = fV0CRBox;
285 partube[1] = fV0CRBox + 0.3;
286 partube[2] = fV0CBoxThickness/2.0;
287 TGeoTube *sV0ER = new TGeoTube("V0ER", partube[0], partube[1], partube[2]);
288 TGeoVolume *v0ER = new TGeoVolume("V0ER",sV0ER,medV0CAlu);
289 v0RI->AddNode(v0ER,1,0);
290 v0ER->SetLineColor(kYellow);
292 // Creation of assembly V0R0 of scintillator cells within one sector
293 TGeoVolume *v0R0 = new TGeoVolumeAssembly("V0R0");
295 // Elementary cell of ring 1 - right part - :
296 // (cells of ring 1 will be shifted by 2.0 cm backwards to output fibers)
297 Float_t r1Right = fV0CRMin + fV0CHeight1;
298 Float_t offset = fV0CBoxThickness/2.0 - fV0CLidThickness - fV0CCellThickness/2.0;
300 partubs[0] = fV0CRMin;
301 partubs[1] = r1Right;
302 partubs[2] = fV0CCellThickness/2.0;
303 partubs[3] = 90.0-22.5;
304 partubs[4] = 135.0-22.5;
305 TGeoTubeSeg *sV0R1 = new TGeoTubeSeg("V0R1", partubs[0], partubs[1], partubs[2],
306 partubs[3], partubs[4]);
307 TGeoVolume *v0R1 = new TGeoVolume("V0R1",sV0R1,medV0CSci);
308 TGeoTranslation *tr4 = new TGeoTranslation(0.,0.,-offset);
309 v0R0->AddNode(v0R1,1,tr4);
310 v0R1->SetLineColor(kColorVZERO);
312 // Elementary cell of ring 2 - right part - :
313 // (cells of ring 2 will be shifted by 1.0 cm backwards to output fibers)
314 Float_t r2Right = r1Right + fV0CHeight2;
315 partubs[0] = r1Right; // must be equal to 7.1
316 partubs[1] = r2Right; // must be equal to 11.5
317 TGeoTubeSeg *sV0R2 = new TGeoTubeSeg("V0R2", partubs[0], partubs[1], partubs[2],
318 partubs[3], partubs[4]);
319 TGeoVolume *v0R2 = new TGeoVolume("V0R2",sV0R2,medV0CSci);
320 TGeoTranslation *tr5 = new TGeoTranslation(0.0,0.2,-offset + fV0COffsetFibers);
321 v0R0->AddNode(v0R2,1,tr5);
322 v0R2->SetLineColor(kColorVZERO);
324 // Ring 3 - right part - :
325 r2Right = r2Right + 0.2;
326 Float_t r3Right = r2Right + fV0CHeight3;
327 partubs[0] = r2Right; // must be equal to 11.7
328 partubs[1] = r3Right; // must be equal to 19.1
329 partubs[3] = 90.0-22.5;
330 partubs[4] = 112.5-22.5;
331 TGeoTubeSeg *sV0R3 = new TGeoTubeSeg("V0R3", partubs[0], partubs[1], partubs[2],
332 partubs[3], partubs[4]);
333 TGeoVolume *v0R3 = new TGeoVolume("V0R3",sV0R3,medV0CSci);
334 TGeoTranslation *tr6 = new TGeoTranslation(0.,0.2,-offset + 2.0*fV0COffsetFibers);
335 v0R0->AddNode(v0R3,1,tr6);
336 v0R3->SetLineColor(kColorVZERO);
337 partubs[3] = 112.5-22.5;
338 partubs[4] = 135.0-22.5;
339 TGeoTubeSeg *sV0R4 = new TGeoTubeSeg("V0R4", partubs[0], partubs[1], partubs[2],
340 partubs[3], partubs[4]);
341 TGeoVolume *v0R4 = new TGeoVolume("V0R4",sV0R4,medV0CSci);
342 v0R0->AddNode(v0R4,1,tr6);
343 v0R4->SetLineColor(kColorVZERO);
345 // Ring 4 - right part - :
346 Float_t x = TMath::ATan(3.5/257.5) * ((180./TMath::Pi()));
347 r3Right = r3Right + 0.2 + 0.2; // + 0.2 because no shift in translation here !!
348 partubs[0] = r3Right; // must be equal to 19.5
349 partubs[1] = r4Right; // must be equal to 32.0
350 partubs[3] = 90.0-22.5+x;
351 partubs[4] = 112.5-22.5-x;
352 TGeoTubeSeg *sV0R5 = new TGeoTubeSeg("V0R5", partubs[0], partubs[1], partubs[2],
353 partubs[3], partubs[4]);
354 TGeoVolume *v0R5 = new TGeoVolume("V0R5",sV0R5,medV0CSci);
355 TGeoTranslation *tr7 = new TGeoTranslation(0.,0.0,-offset + 2.0*fV0COffsetFibers);
356 v0R0->AddNode(v0R5,1,tr7);
357 v0R5->SetLineColor(kColorVZERO);
358 partubs[3] = 112.5-22.5+x;
359 partubs[4] = 135.0-22.5-x;
360 TGeoTubeSeg *sV0R6 = new TGeoTubeSeg("V0R6", partubs[0], partubs[1], partubs[2],
361 partubs[3], partubs[4]);
362 TGeoVolume *v0R6 = new TGeoVolume("V0R6",sV0R6,medV0CSci);
363 v0R0->AddNode(v0R6,1,tr7);
364 v0R6->SetLineColor(kColorVZERO);
366 Float_t phiDeg= 180./4.;
367 Int_t nsecR = 1; // number of sectors in right part of V0
368 for (phi = 22.5; phi < 360.0; phi = phi + phiDeg) {
369 TGeoRotation *rot1 = new TGeoRotation("rot1", 90.0, +phi, 90., 90.+phi, 0.0, 0.0 );
370 v0RI->AddNode(v0R0,nsecR,rot1);
374 ///////////////////////////////////////////////////////////////////////////
375 // Construct the geometry of V0A Detector. Carlos PEREZ, PUCP
377 const int kV0AColorSci = 5;
378 const int kV0AColorPlaIn = 3;
379 const int kV0AColorPlaOu = 41;
380 const int kV0AColorOct = 7;
381 const int kV0AColorFra = 6;
382 const int kV0AColorFib = 11;
383 const int kV0AColorPMG = 1;
384 const int kV0AColorPMA = 2;
385 const int kV0AColorBas = 20;
386 TGeoMedium *medV0ASci = gGeoManager->GetMedium("VZERO_V0ASci");
387 TGeoMedium *medV0APlaIn = gGeoManager->GetMedium("VZERO_V0APlaIn");
388 TGeoMedium *medV0APlaOu = gGeoManager->GetMedium("VZERO_V0APlaOu");
389 TGeoMedium *medV0ASup = gGeoManager->GetMedium("VZERO_V0ALuc");
390 TGeoMedium *medV0AFra = gGeoManager->GetMedium("VZERO_V0ALuc");
391 TGeoMedium *medV0AFib = gGeoManager->GetMedium("VZERO_V0AFib");
392 TGeoMedium *medV0APMGlass = gGeoManager->GetMedium("VZERO_V0APMG");
393 TGeoMedium *medV0APMAlum = gGeoManager->GetMedium("VZERO_V0APMA");
394 TGeoMedium *medV0ABas = gGeoManager->GetMedium("VZERO_V0ALuc");
395 double pi = TMath::Pi();
396 double sin225 = TMath::Sin(pi/8.);
397 double cos225 = TMath::Cos(pi/8.);
398 double ctg225 = cos225/sin225;
399 double sin45 = TMath::Sin(pi/4.); // lucky: Sin45=Cos45
402 ////////////////////////////
403 /// Definition of one sector
404 TGeoVolume *v0ASec = new TGeoVolumeAssembly("V0ASec");
406 /// For boolean sustraction
407 double preShape = 0.2;
408 for (int i=0;i<2;i++) {
409 v0APts[0+8*i] = fV0AR0-fV0AFraWd/2.-preShape; v0APts[1+8*i] = -preShape;
410 v0APts[2+8*i] = fV0AR0-fV0AFraWd/2.-preShape; v0APts[3+8*i] = fV0AFraWd/2.;
411 v0APts[4+8*i] = fV0AR4+fV0AFraWd/2.+preShape; v0APts[5+8*i] = fV0AFraWd/2.;
412 v0APts[6+8*i] = fV0AR4+fV0AFraWd/2.+preShape; v0APts[7+8*i] = -preShape;
414 new TGeoArb8("sV0ACha1",fV0ASciWd/1.5,v0APts);
415 for (int i=0;i<2;i++) {
416 v0APts[0+8*i] = fV0AR0*sin45-preShape;
417 v0APts[1+8*i] = (fV0AR0-fV0AFraWd)*sin45-preShape;
418 v0APts[2+8*i] = (fV0AR0-fV0AFraWd/2.)*sin45-preShape;
419 v0APts[3+8*i] = (fV0AR0-fV0AFraWd/2.)*sin45;
420 v0APts[4+8*i] = (fV0AR4+fV0AFraWd/2.)*sin45+preShape;
421 v0APts[5+8*i] = (fV0AR4+fV0AFraWd/2.)*sin45+2.*preShape;
422 v0APts[6+8*i] = (fV0AR4+fV0AFraWd)*sin45+preShape;
423 v0APts[7+8*i] = fV0AR4*sin45+preShape;
425 new TGeoArb8("sV0ACha2", fV0ASciWd/2.+2.*preShape, v0APts);
426 new TGeoCompositeShape("sV0ACha","sV0ACha1+sV0ACha2");
429 TGeoVolume *v0AFra = new TGeoVolumeAssembly("V0AFra");
430 for (int i=0;i<2;i++) {
431 v0APts[0+8*i] = fV0AR0-fV0AFraWd/2.; v0APts[1+8*i] = 0.;
432 v0APts[2+8*i] = fV0AR0-fV0AFraWd/2.; v0APts[3+8*i] = fV0AFraWd/2.;
433 v0APts[4+8*i] = fV0AR4+fV0AFraWd/2.; v0APts[5+8*i] = fV0AFraWd/2.;
434 v0APts[6+8*i] = fV0AR4+fV0AFraWd/2.; v0APts[7+8*i] = 0.;
436 TGeoArb8 *sV0AFraB1 = new TGeoArb8("sV0AFraB1",fV0ASciWd/2.,v0APts);
437 TGeoVolume *v0AFraB1 = new TGeoVolume("V0AFraB1",sV0AFraB1,medV0AFra);
438 for (int i=0;i<2;i++) {
439 v0APts[0+8*i] = fV0AR0*sin45;
440 v0APts[1+8*i] = (fV0AR0-fV0AFraWd)*sin45;
441 v0APts[2+8*i] = (fV0AR0-fV0AFraWd/2.)*sin45;
442 v0APts[3+8*i] = (fV0AR0-fV0AFraWd/2.)*sin45;
443 v0APts[4+8*i] = (fV0AR4+fV0AFraWd/2.)*sin45;
444 v0APts[5+8*i] = (fV0AR4+fV0AFraWd/2.)*sin45;
445 v0APts[6+8*i] = (fV0AR4+fV0AFraWd)*sin45;
446 v0APts[7+8*i] = fV0AR4*sin45;
448 TGeoArb8 *sV0AFraB2 = new TGeoArb8("sV0AFraB2", fV0ASciWd/2., v0APts);
449 TGeoVolume *v0AFraB2 = new TGeoVolume("V0AFraB2",sV0AFraB2,medV0AFra);
450 v0AFraB1->SetLineColor(kV0AColorFra); v0AFraB2->SetLineColor(kV0AColorFra);
451 v0AFra->AddNode(v0AFraB1,1);
452 v0AFra->AddNode(v0AFraB2,1); // Prefer 2 GeoObjects insted of 3 GeoMovements
453 new TGeoTubeSeg( "sV0AFraR1b", fV0AR0-fV0AFraWd/2.,
454 fV0AR0+fV0AFraWd/2., fV0ASciWd/2., 0, 45);
455 new TGeoTubeSeg( "sV0AFraR2b", fV0AR1-fV0AFraWd/2.,
456 fV0AR1+fV0AFraWd/2., fV0ASciWd/2., 0, 45);
457 new TGeoTubeSeg( "sV0AFraR3b", fV0AR2-fV0AFraWd/2.,
458 fV0AR2+fV0AFraWd/2., fV0ASciWd/2., 0, 45);
459 new TGeoTubeSeg( "sV0AFraR4b", fV0AR3-fV0AFraWd/2.,
460 fV0AR3+fV0AFraWd/2., fV0ASciWd/2., 0, 45);
461 new TGeoTubeSeg( "sV0AFraR5b", fV0AR4-fV0AFraWd/2.,
462 fV0AR4+fV0AFraWd/2., fV0ASciWd/2., 0, 45);
463 TGeoCompositeShape *sV0AFraR1 = new TGeoCompositeShape("sV0AFraR1","sV0AFraR1b-sV0ACha");
464 TGeoCompositeShape *sV0AFraR2 = new TGeoCompositeShape("sV0AFraR2","sV0AFraR2b-sV0ACha");
465 TGeoCompositeShape *sV0AFraR3 = new TGeoCompositeShape("sV0AFraR3","sV0AFraR3b-sV0ACha");
466 TGeoCompositeShape *sV0AFraR4 = new TGeoCompositeShape("sV0AFraR4","sV0AFraR4b-sV0ACha");
467 TGeoCompositeShape *sV0AFraR5 = new TGeoCompositeShape("sV0AFraR5","sV0AFraR5b-sV0ACha");
468 TGeoVolume *v0AFraR1 = new TGeoVolume("V0AFraR1",sV0AFraR1,medV0AFra);
469 TGeoVolume *v0AFraR2 = new TGeoVolume("V0AFraR2",sV0AFraR2,medV0AFra);
470 TGeoVolume *v0AFraR3 = new TGeoVolume("V0AFraR3",sV0AFraR3,medV0AFra);
471 TGeoVolume *v0AFraR4 = new TGeoVolume("V0AFraR4",sV0AFraR4,medV0AFra);
472 TGeoVolume *v0AFraR5 = new TGeoVolume("V0AFraR5",sV0AFraR5,medV0AFra);
473 v0AFraR1->SetLineColor(kV0AColorFra); v0AFraR2->SetLineColor(kV0AColorFra);
474 v0AFraR3->SetLineColor(kV0AColorFra); v0AFraR4->SetLineColor(kV0AColorFra);
475 v0AFraR5->SetLineColor(kV0AColorFra);
476 v0AFra->AddNode(v0AFraR1,1);
477 v0AFra->AddNode(v0AFraR2,1);
478 v0AFra->AddNode(v0AFraR3,1);
479 v0AFra->AddNode(v0AFraR4,1);
480 v0AFra->AddNode(v0AFraR5,1);
481 v0ASec->AddNode(v0AFra,1);
483 /// Sensitive scintilator
484 TGeoVolume *v0ASci = new TGeoVolumeAssembly("V0ASci");
485 new TGeoTubeSeg( "sV0AR1b", fV0AR0+fV0AFraWd/2.,
486 fV0AR1-fV0AFraWd/2., fV0ASciWd/2., 0, 45);
487 new TGeoTubeSeg( "sV0AR2b", fV0AR1+fV0AFraWd/2.,
488 fV0AR2-fV0AFraWd/2., fV0ASciWd/2., 0, 45);
489 new TGeoTubeSeg( "sV0AR3b", fV0AR2+fV0AFraWd/2.,
490 fV0AR3-fV0AFraWd/2., fV0ASciWd/2., 0, 45);
491 new TGeoTubeSeg( "sV0AR4b", fV0AR3+fV0AFraWd/2.,
492 fV0AR4-fV0AFraWd/2., fV0ASciWd/2., 0, 45);
493 TGeoCompositeShape *sV0AR1 = new TGeoCompositeShape("sV0AR1","sV0AR1b-sV0ACha");
494 TGeoCompositeShape *sV0AR2 = new TGeoCompositeShape("sV0AR2","sV0AR2b-sV0ACha");
495 TGeoCompositeShape *sV0AR3 = new TGeoCompositeShape("sV0AR3","sV0AR3b-sV0ACha");
496 TGeoCompositeShape *sV0AR4 = new TGeoCompositeShape("sV0AR4","sV0AR4b-sV0ACha");
497 TGeoVolume *v0L1 = new TGeoVolume("V0L1",sV0AR1,medV0ASci);
498 TGeoVolume *v0L2 = new TGeoVolume("V0L2",sV0AR2,medV0ASci);
499 TGeoVolume *v0L3 = new TGeoVolume("V0L3",sV0AR3,medV0ASci);
500 TGeoVolume *v0L4 = new TGeoVolume("V0L4",sV0AR4,medV0ASci);
501 v0L1->SetLineColor(kV0AColorSci); v0L2->SetLineColor(kV0AColorSci);
502 v0L3->SetLineColor(kV0AColorSci); v0L4->SetLineColor(kV0AColorSci);
503 v0ASec->AddNode(v0L1,1);
504 v0ASec->AddNode(v0L2,1);
505 v0ASec->AddNode(v0L3,1);
506 v0ASec->AddNode(v0L4,1);
508 /// Non-sensitive scintilator
509 for (int i=0;i<2;i++) {
510 v0APts[0+8*i] = fV0AR4;
511 v0APts[1+8*i] = fV0AFraWd/2.;
512 v0APts[2+8*i] = fV0AR4*sin45;
513 v0APts[3+8*i] = (fV0AR4-fV0AFraWd)*sin45;
514 v0APts[4+8*i] = fV0AR5/cos225*sin45+fV0AFraWd/2.*sin225;
515 v0APts[5+8*i] = fV0AR5/cos225*sin45-fV0AFraWd/2.*cos225;
516 v0APts[6+8*i] = fV0AR5/cos225-fV0AFraWd/2./ctg225;
517 v0APts[7+8*i] = fV0AFraWd/2.;
519 new TGeoArb8("sV0AR5S1", fV0ASciWd/2., v0APts);
520 new TGeoTubeSeg("sV0AR5S2", fV0AR4-(v0APts[6]-v0APts[0]),
521 fV0AR4+fV0AFraWd/2., fV0ASciWd/2.+2*preShape, 0, 45);
522 TGeoCompositeShape *sV0AR5 = new TGeoCompositeShape("V0AR5","(sV0AR5S1 - sV0AR5S2)");
523 TGeoVolume *v0AR5 = new TGeoVolume("V0AR5",sV0AR5,medV0ASci);
524 v0AR5->SetLineColor(kV0AColorSci);
525 v0ASci->AddNode(v0AR5,1);
526 v0ASec->AddNode(v0ASci,1);
528 /// Segment of innermost octagon
529 TGeoVolume *v0ASup = new TGeoVolumeAssembly("V0ASup");
530 for (int i=0;i<2;i++) {
531 v0APts[0+8*i] = (fV0AR5-fV0AOctH1)/cos225; v0APts[1+8*i] = 0.;
532 v0APts[2+8*i] = (fV0AR5-fV0AOctH1)/cos225*sin45; v0APts[3+8*i] = (fV0AR5-fV0AOctH1)/cos225*sin45;
533 v0APts[4+8*i] = fV0AR5/cos225*sin45; v0APts[5+8*i] = fV0AR5/cos225*sin45;
534 v0APts[6+8*i] = fV0AR5/cos225; v0APts[7+8*i] = 0.;
536 TGeoArb8 *sV0AOct1 = new TGeoArb8("sV0AOct1", fV0AOctWd/2., v0APts);
537 TGeoVolume *v0AOct1 = new TGeoVolume("V0AOct1",sV0AOct1,medV0ASup);
538 v0AOct1->SetLineColor(kV0AColorOct);
539 v0ASup->AddNode(v0AOct1,1,new TGeoTranslation(0,0,(fV0ASciWd+fV0AOctWd)/2.));
540 v0ASup->AddNode(v0AOct1,2,new TGeoTranslation(0,0,-(fV0ASciWd+fV0AOctWd)/2.));
542 /// Segment of outtermost octagon
543 for (int i=0;i<2;i++) {
544 v0APts[0+8*i] = (fV0AR6-fV0AOctH2)/cos225; v0APts[1+8*i] = 0.;
545 v0APts[2+8*i] = (fV0AR6-fV0AOctH2)/cos225*sin45; v0APts[3+8*i] = (fV0AR6-fV0AOctH2)/cos225*sin45;
546 v0APts[4+8*i] = fV0AR6/cos225*sin45; v0APts[5+8*i] = fV0AR6/cos225*sin45;
547 v0APts[6+8*i] = fV0AR6/cos225; v0APts[7+8*i] = 0.;
549 TGeoArb8 *sV0AOct2 = new TGeoArb8("sV0AOct2", (fV0ASciWd+2*fV0AOctWd)/2., v0APts);
550 TGeoVolume *v0AOct2 = new TGeoVolume("V0AOct2", sV0AOct2,medV0ASup);
551 v0AOct2->SetLineColor(kV0AColorOct);
552 v0ASup->AddNode(v0AOct2,1);
553 v0ASec->AddNode(v0ASup,1);
556 v0APts[ 0] = v0APts[ 2] = -12.5;
557 v0APts[ 1] = v0APts[ 7] = (fV0ASciWd+fV0AOctWd)/2.-0.01;
558 v0APts[ 3] = v0APts[ 5] = (fV0ASciWd+fV0AOctWd)/2.+0.01;
559 v0APts[ 4] = v0APts[ 6] = +12.5;
560 v0APts[ 8] = v0APts[10] = -0.5;
561 v0APts[ 9] = v0APts[15] = 0.;
562 v0APts[11] = v0APts[13] = 0.25;
563 v0APts[12] = v0APts[14] = +0.5;
564 TGeoArb8 *sV0AFib = new TGeoArb8("sV0AFib", (fV0AR6-fV0AR5-fV0AOctH2-0.006)/2., v0APts);
565 TGeoVolume *v0AFib1 = new TGeoVolume("V0AFib1",sV0AFib,medV0AFib);
566 TGeoVolume *v0AFib = new TGeoVolumeAssembly("V0AFib");
567 TGeoRotation *rot = new TGeoRotation("rot");
569 rot->RotateZ(-90.+22.5);
570 v0AFib->AddNode(v0AFib1,1,rot);
571 rot = new TGeoRotation("rot");
574 rot->RotateZ(-90.+22.5);
575 v0AFib->SetLineColor(kV0AColorFib);
576 v0AFib->AddNode(v0AFib1,2,rot);
577 v0ASec->AddNode(v0AFib,1,new TGeoTranslation((fV0AR6-fV0AOctH2+fV0AR5)*cos225/2.,
578 (fV0AR6-fV0AOctH2+fV0AR5)*sin225/2., 0));
581 for (int i=0;i<2;i++) {
582 v0APts[0+8*i] = fV0AR0; v0APts[1+8*i] = 0.;
583 v0APts[2+8*i] = fV0AR0*sin45; v0APts[3+8*i] = fV0AR0*sin45;
584 v0APts[4+8*i] = fV0AR6/cos225 * sin45; v0APts[5+8*i] = fV0AR6/cos225*sin45;
585 v0APts[6+8*i] = fV0AR6/cos225; v0APts[7+8*i] = 0.;
587 TGeoArb8 *sV0APlaIn = new TGeoArb8("sV0APlaIn", (fV0APlaWd-2*fV0APlaAl)/2., v0APts);
588 TGeoVolume *v0APlaIn = new TGeoVolume("V0APlaIn", sV0APlaIn, medV0APlaIn);
589 TGeoArb8 *sV0APlaOu = new TGeoArb8("sV0APlaOu", fV0APlaAl/2., v0APts);
590 TGeoVolume *v0APlaOu = new TGeoVolume("V0APlaOu", sV0APlaOu, medV0APlaOu);
591 v0APlaIn->SetLineColor(kV0AColorPlaIn); v0APlaOu->SetLineColor(kV0AColorPlaOu);
592 TGeoVolume *v0APla = new TGeoVolumeAssembly("V0APla");
593 v0APla->AddNode(v0APlaIn,1);
594 v0APla->AddNode(v0APlaOu,1,new TGeoTranslation(0,0,(fV0APlaWd-fV0APlaAl)/2.));
595 v0APla->AddNode(v0APlaOu,2,new TGeoTranslation(0,0,-(fV0APlaWd-fV0APlaAl)/2.));
596 v0ASec->AddNode(v0APla,1,new TGeoTranslation(0,0,(fV0ASciWd+2*fV0AOctWd+fV0APlaWd)/2.));
597 v0ASec->AddNode(v0APla,2,new TGeoTranslation(0,0,-(fV0ASciWd+2*fV0AOctWd+fV0APlaWd)/2.));
600 TGeoVolume* v0APM = new TGeoVolumeAssembly("V0APM");
601 new TGeoBBox("sV0APMB1", fV0APMBWd/2., fV0APMBHt/2., fV0APMBTh/2.);
602 new TGeoBBox("sV0APMB2", fV0APMBWd/2.-fV0APMBWdW, fV0APMBHt/2.-fV0APMBHtW, fV0APMBTh/2.-fV0APMBThW);
603 TGeoCompositeShape *sV0APMB = new TGeoCompositeShape("sV0APMB","sV0APMB1-sV0APMB2");
604 TGeoVolume *v0APMB = new TGeoVolume("V0APMB",sV0APMB, medV0APMAlum);
605 v0APMB->SetLineColor(kV0AColorPMA);
606 v0APM->AddNode(v0APMB,1);
609 TGeoTube *sV0APMT1 = new TGeoTube("sV0APMT1", fV0APMTR1, fV0APMTR2, fV0APMTH/2.);
610 TGeoVolume *v0APMT1 = new TGeoVolume("V0APMT1", sV0APMT1, medV0APMGlass);
611 TGeoTube *sV0APMT2 = new TGeoTube("sV0APMT2", fV0APMTR3, fV0APMTR4, fV0APMTH/2.);
612 TGeoVolume *v0APMT2 = new TGeoVolume("V0APMT2", sV0APMT2, medV0APMAlum);
613 TGeoVolume *v0APMT = new TGeoVolumeAssembly("V0APMT");
614 TGeoTube *sV0APMTT = new TGeoTube("sV0APMTT", 0., fV0APMTR4, fV0APMTB/2.);
615 TGeoVolume *v0APMTT = new TGeoVolume("V0APMT1", sV0APMTT, medV0APMAlum);
616 v0APMT1->SetLineColor(kV0AColorPMG);
617 v0APMT2->SetLineColor(kV0AColorPMA);
618 v0APMTT->SetLineColor(kV0AColorPMA);
619 rot = new TGeoRotation("rot", 90, 0, 180, 0, 90, 90);
620 v0APMT->AddNode(v0APMT1,1,rot);
621 v0APMT->AddNode(v0APMT2,1,rot);
622 v0APMT->AddNode(v0APMTT,1,new TGeoCombiTrans(0,-(fV0APMTH+fV0APMTB)/2.,0,rot));
623 double autoShift = (fV0APMBWd-2*fV0APMBWdW)/4.;
624 v0APM->AddNode(v0APMT, 1, new TGeoTranslation(-1.5*autoShift, 0, 0));
625 v0APM->AddNode(v0APMT, 2, new TGeoTranslation(-0.5*autoShift, 0, 0));
626 v0APM->AddNode(v0APMT, 3, new TGeoTranslation(+0.5*autoShift, 0, 0));
627 v0APM->AddNode(v0APMT, 4, new TGeoTranslation(+1.5*autoShift, 0, 0));
630 rot = new TGeoRotation("rot");
631 rot->RotateX(90-fV0APMBAng);
632 rot->RotateZ(-90.+22.5);
633 double cosAngPMB = TMath::Cos(fV0APMBAng*TMath::DegToRad());
634 double sinAngPMB = TMath::Sin(fV0APMBAng*TMath::DegToRad());
635 double shiftZ = fV0APMBHt/2. * cosAngPMB
636 - ( fV0ASciWd + 2 * fV0AOctWd + 2 * fV0APlaWd )/2. - fV0APMBTh/2. * sinAngPMB;
637 double shiftR = fV0AR6 + fV0APMBHt/2. * sinAngPMB + fV0APMBTh/2. * cosAngPMB;
638 v0ASec->AddNode(v0APM,1, new TGeoCombiTrans( shiftR*cos225, shiftR*sin225, shiftZ, rot));
640 /// End of sector definition
641 ////////////////////////////
643 /// Replicate sectors
644 TGeoVolume *v0LE = new TGeoVolumeAssembly("V0LE");
645 for(int i=0; i<8; i++) {
646 TGeoRotation *rot = new TGeoRotation("rot", 90., i*45.+90, 90., 90.+i*45.+90, 0., 0.);
647 v0LE->AddNode(v0ASec,i+1,rot); /// modificacion +1 anhadido
650 /// Basis Construction
651 rot = new TGeoRotation("rot"); rot->RotateX(90-fV0APMBAng); rot->RotateZ(-22.5);
652 TGeoCombiTrans *pos1 = new TGeoCombiTrans("pos1", shiftR*sin225, shiftR*cos225, shiftZ, rot);
653 pos1->RegisterYourself();
654 for (int i=0;i<2;i++) {
655 v0APts[0+8*i] = fV0AR6/cos225*sin45; v0APts[1+8*i] = fV0AR6/cos225*sin45;
656 v0APts[2+8*i] = 0; v0APts[3+8*i] = fV0AR6/cos225;
657 v0APts[4+8*i] = 0; v0APts[5+8*i] = fV0AR6/cos225+fV0APlaEx;
658 v0APts[6+8*i] = fV0AR6/cos225-(fV0AR6/cos225+fV0APlaEx)/ctg225;
659 v0APts[7+8*i] = fV0AR6/cos225+fV0APlaEx;
661 new TGeoArb8("sV0APlaExIn1", (fV0APlaWd-2*fV0APlaAl)/2., v0APts);
662 new TGeoArb8("sV0APlaExOu1", fV0APlaAl/2., v0APts);
663 TGeoCompositeShape *sV0APlaExIn = new TGeoCompositeShape("sV0APlaExIn","sV0APlaExIn1-sV0APMB1:pos1");
664 TGeoVolume *v0APlaExIn = new TGeoVolume("V0APlaExIn", sV0APlaExIn, medV0APlaIn);
665 TGeoCompositeShape *sV0APlaExOu = new TGeoCompositeShape("sV0APlaExOu","sV0APlaExOu1-sV0APMB1:pos1");
666 TGeoVolume *v0APlaExOu = new TGeoVolume("V0APlaExOu", sV0APlaExOu, medV0APlaOu);
667 v0APlaExIn->SetLineColor(kV0AColorPlaIn); v0APlaExOu->SetLineColor(kV0AColorPlaOu);
668 TGeoVolume *v0APlaEx = new TGeoVolumeAssembly("V0APlaEx");
669 v0APlaEx->AddNode(v0APlaExIn,1);
670 v0APlaEx->AddNode(v0APlaExOu,1,new TGeoTranslation(0,0,(fV0APlaWd-fV0APlaAl)/2.));
671 v0APlaEx->AddNode(v0APlaExOu,2,new TGeoTranslation(0,0,-(fV0APlaWd-fV0APlaAl)/2.));
672 for (int i=0;i<2;i++) {
673 v0APts[0+8*i] = fV0AR6/cos225-(fV0AR6/cos225+fV0APlaEx)/ctg225-fV0ABasHt*sin45;
674 v0APts[1+8*i] = fV0AR6/cos225+fV0APlaEx-fV0ABasHt*sin45;
675 v0APts[2+8*i] = 0; v0APts[3+8*i] = fV0AR6/cos225+fV0APlaEx-fV0ABasHt;
676 v0APts[4+8*i] = 0; v0APts[5+8*i] = fV0AR6/cos225+fV0APlaEx;
677 v0APts[6+8*i] = fV0AR6/cos225-(fV0AR6/cos225+fV0APlaEx)/ctg225;
678 v0APts[7+8*i] = fV0AR6/cos225+fV0APlaEx;
680 new TGeoArb8("sV0ABas1", (fV0ASciWd+2*fV0AOctWd)/2., v0APts);
681 TGeoCompositeShape *sV0ABas = new TGeoCompositeShape("sV0ABas","sV0ABas1-sV0APMB1:pos1");
682 TGeoVolume *v0ABas = new TGeoVolume("V0ABas", sV0ABas, medV0ABas);
683 v0ABas->SetLineColor(kV0AColorBas);
684 TGeoVolume *v0ABasis = new TGeoVolumeAssembly("V0ABasis");
685 rot = new TGeoRotation("rot",90.,180.,90.,90.,0.,0.);
686 v0ABasis->AddNode(v0APlaEx,1, new TGeoTranslation(0,0,(fV0ASciWd+2*fV0AOctWd+fV0APlaWd)/2.));
687 v0ABasis->AddNode(v0APlaEx,2, new TGeoTranslation(0,0,-(fV0ASciWd+2*fV0AOctWd+fV0APlaWd)/2.));
688 v0ABasis->AddNode(v0APlaEx,3, new TGeoCombiTrans(0,0,(fV0ASciWd+2*fV0AOctWd+fV0APlaWd)/2.,rot));
689 v0ABasis->AddNode(v0APlaEx,4, new TGeoCombiTrans(0,0,-(fV0ASciWd+2*fV0AOctWd+fV0APlaWd)/2.,rot));
690 v0ABasis->AddNode(v0ABas,1);
691 v0ABasis->AddNode(v0ABas,2,rot);
692 rot = new TGeoRotation("rot");
694 v0LE->AddNode(v0ABasis,1,rot);
696 // Adding detectors to top volume
697 TGeoVolume *vZERO = new TGeoVolumeAssembly("VZERO");
698 vZERO->AddNode(v0RI,1,new TGeoTranslation(0, 0, -zdet));
699 // V0A position according to TB decision 13/12/2005
700 vZERO->AddNode(v0LE,1,new TGeoTranslation(0, 0, +327.5));
701 top->AddNode(vZERO,1);
704 //_____________________________________________________________________________
705 void AliVZEROv7::AddAlignableVolumes() const
708 // Create entries for alignable volumes associating the symbolic volume
709 // name with the corresponding volume path. Needs to be syncronized with
710 // eventual changes in the geometry.
712 TString vpC = "/ALIC_1/VZERO_1/V0RI_1";
713 TString vpA = "/ALIC_1/VZERO_1/V0LE_1";
714 TString snC = "VZERO/V0C";
715 TString snA = "VZERO/V0A";
717 if(!gGeoManager->SetAlignableEntry(snC.Data(),vpC.Data()))
718 AliFatal(Form("Alignable entry %s not created. Volume path %s not valid", snC.Data(),vpC.Data()));
719 if(!gGeoManager->SetAlignableEntry(snA.Data(),vpA.Data()))
720 AliFatal(Form("Alignable entry %s not created. Volume path %s not valid", snA.Data(),vpA.Data()));
724 //_____________________________________________________________________________
725 void AliVZEROv7::CreateMaterials()
728 // Creates materials used for geometry
730 AliDebug(2,"Create materials");
731 // Parameters for simulation scope
732 Int_t fieldType = gAlice->Field()->Integ(); // Field type
733 Double_t maxField = gAlice->Field()->Max(); // Field max.
734 Double_t maxBending = 10; // Max Angle
735 Double_t maxStepSize = 0.01; // Max step size
736 Double_t maxEnergyLoss = 1; // Max Delta E
737 Double_t precision = 0.003; // Precision
738 Double_t minStepSize = 0.003; // Minimum step size
741 Double_t a, z, radLength, absLength;
742 Float_t density, as[4], zs[4], ws[4];
744 // Parameters for V0CPrePlates: Aluminium
751 AliMaterial( id, "V0CAlu", a, z, density, radLength, absLength, 0, 0);
752 AliMedium(id, "V0CAlu", id, 1, fieldType, maxField, maxBending, maxStepSize,
753 maxEnergyLoss, precision, minStepSize);
755 // Parameters for V0CPlates: Carbon
762 AliMaterial(id, "V0CCar", a, z, density, radLength, absLength, 0, 0);
763 AliMedium(id, "V0CCar", id, 1, fieldType, maxField, maxBending, maxStepSize,
764 maxEnergyLoss, precision, minStepSize);
766 // Parameters for V0Cscintillator: BC408
767 as[0] = 1.00794; as[1] = 12.011;
768 zs[0] = 1.; zs[1] = 6.;
769 ws[0] = 1.; ws[1] = 1.;
772 AliMixture(id, "V0CSci", as, zs, density, -2, ws);
773 AliMedium(id,"V0CSci", id, 1, fieldType, maxField, maxBending, maxStepSize,
774 maxEnergyLoss, precision, minStepSize);
776 // Parameters for V0Ascintilator: BC404
777 as[0] = 1.00794; as[1] = 12.011;
778 zs[0] = 1.; zs[1] = 6.;
779 ws[0] = 5.21; ws[1] = 4.74;
782 AliMixture(id, "V0ASci", as, zs, density, -2, ws);
783 AliMedium(id, "V0ASci", id, 1, fieldType, maxField, maxBending, maxStepSize,
784 maxEnergyLoss, precision, minStepSize);
786 // Parameters for V0ALuc: Lucita but for the simulation BC404
787 as[0] = 1.00794; as[1] = 12.011;
788 zs[0] = 1.; zs[1] = 6.;
789 ws[0] = 5.21; ws[1] = 4.74;
792 AliMixture(id, "V0ALuc", as, zs, density, -2, ws);
793 AliMedium(id, "V0ALuc", id, 1, fieldType, maxField, maxBending, maxStepSize,
794 maxEnergyLoss, precision, minStepSize);
796 // Parameters for V0Aplate: EuroComposite - EC-PI 626 PS - AlMg3
797 as[0] = 26.982; as[1] = 24.305;
798 zs[0] = 13.; zs[1] = 12.;
799 ws[0] = 1.; ws[1] = 3.;
802 AliMixture(id, "V0APlaOu", as, zs, density, -2, ws);
803 AliMedium(id, "V0APlaOu", id, 1, fieldType, maxField, maxBending, maxStepSize,
804 maxEnergyLoss, precision, minStepSize);
806 // Parameters for V0Aplate: EuroComposite - EC-PI 626 PS - EC-PI 6.4-42
807 as[0] = 1.00794; as[1] = 12.011;
808 zs[0] = 1.; zs[1] = 6.;
809 ws[0] = 5.21; ws[1] = 4.74;
812 AliMixture(id, "V0APlaIn", as, zs, density, -2, ws);
813 AliMedium(id, "V0APlaIn", id, 1, fieldType, maxField, maxBending, maxStepSize,
814 maxEnergyLoss, precision, minStepSize);
816 // Parameters for V0Afiber: BC9929AMC Plastic Scintillating Fiber from Saint-Gobain
817 as[0] = 1.00794; as[1] = 12.011;
818 zs[0] = 1.; zs[1] = 6.;
819 ws[0] = 4.82; ws[1] = 4.85;
822 AliMixture(id, "V0AFib", as, zs, density, -2, ws);
823 AliMedium(id, "V0AFib", id, 1, fieldType, maxField, maxBending, maxStepSize,
824 maxEnergyLoss, precision, minStepSize);
826 // Parameters for V0APMA: Aluminium
833 AliMaterial(id, "V0APMA", a, z, density, radLength, absLength, 0, 0);
834 AliMedium(id, "V0APMA", id, 1, fieldType, maxField, maxBending, maxStepSize,
835 maxEnergyLoss, precision, minStepSize);
837 // Parameters for V0APMG: Glass for the simulation Aluminium
844 AliMaterial(id, "V0APMG", a, z, density, radLength, absLength, 0, 0);
845 AliMedium(id, "V0APMG", id, 1, fieldType, maxField, maxBending, maxStepSize,
846 maxEnergyLoss, precision, minStepSize);
849 //_____________________________________________________________________________
850 void AliVZEROv7::DrawModule() const
852 // Drawing is done in DrawVZERO.C
854 AliDebug(2,"DrawModule");
858 //_____________________________________________________________________________
859 void AliVZEROv7::DrawGeometry()
861 // Drawing of V0 geometry done in DrawV0.C
863 AliDebug(2,"DrawGeometry");
866 //_____________________________________________________________________________
867 void AliVZEROv7::Init()
869 // Initialises version of the VZERO Detector given in Config
870 // Just prints an information message
872 // AliInfo(Form("VZERO version %d initialized \n",IsVersion()));
874 AliDebug(1,"VZERO version 7 initialized");
878 //_____________________________________________________________________________
879 void AliVZEROv7::StepManager()
881 // Step Manager, called at each step
885 static Float_t hits[21];
886 static Float_t eloss, tlength;
887 static Int_t nPhotonsInStep = 0;
888 static Int_t nPhotons = 0;
889 static Int_t numStep = 0;
891 Float_t destep, step;
894 // We keep only charged tracks :
895 if ( !gMC->TrackCharge() || !gMC->IsTrackAlive() ) return;
897 vol[0] = gMC->CurrentVolOffID(1, vol[1]);
898 vol[2] = gMC->CurrentVolID(copy);
900 static Int_t idV0R1 = gMC->VolId("V0R1");
901 static Int_t idV0L1 = gMC->VolId("V0L1");
902 static Int_t idV0R2 = gMC->VolId("V0R2");
903 static Int_t idV0L2 = gMC->VolId("V0L2");
904 static Int_t idV0R3 = gMC->VolId("V0R3");
905 static Int_t idV0L3 = gMC->VolId("V0L3");
906 static Int_t idV0R4 = gMC->VolId("V0R4");
907 static Int_t idV0L4 = gMC->VolId("V0L4");
908 static Int_t idV0R5 = gMC->VolId("V0R5");
909 static Int_t idV0R6 = gMC->VolId("V0R6");
910 bool hitOnV0C = true;
912 double lightAttenuation;
915 if ( gMC->CurrentVolID(copy) == idV0R1 || gMC->CurrentVolID(copy) == idV0L1 )
917 else if ( gMC->CurrentVolID(copy) == idV0R2 || gMC->CurrentVolID(copy) == idV0L2 )
919 else if ( gMC->CurrentVolID(copy) == idV0R3 || gMC->CurrentVolID(copy) == idV0R4
920 || gMC->CurrentVolID(copy) == idV0L3 ) ringNumber = 3;
921 else if ( gMC->CurrentVolID(copy) == idV0R5 || gMC->CurrentVolID(copy) == idV0R6
922 || gMC->CurrentVolID(copy) == idV0L4 ) ringNumber = 4;
925 if (gMC->CurrentVolID(copy) == idV0L1 || gMC->CurrentVolID(copy) == idV0L2 ||
926 gMC->CurrentVolID(copy) == idV0L3 || gMC->CurrentVolID(copy) == idV0L4)
928 destep = gMC->Edep();
929 step = gMC->TrackStep();
931 lightYield = fV0CLightYield;
932 lightAttenuation = fV0CLightAttenuation;
933 nMeters = fV0CnMeters;
934 fibToPhot = fV0CFibToPhot;
936 lightYield = fV0ALightYield;
937 lightAttenuation = fV0ALightAttenuation;
938 nMeters = fV0AnMeters;
939 fibToPhot = fV0AFibToPhot;
941 nPhotonsInStep = Int_t(destep / (lightYield *1e-9) );
942 nPhotonsInStep = gRandom->Poisson(nPhotonsInStep);
945 if ( gMC->IsTrackEntering() ) {
946 nPhotons = nPhotonsInStep;
947 gMC->TrackPosition(fTrackPosition);
948 gMC->TrackMomentum(fTrackMomentum);
949 Float_t pt = TMath::Sqrt( fTrackMomentum.Px() * fTrackMomentum.Px()
950 + fTrackMomentum.Py() * fTrackMomentum.Py() );
951 TParticle *par = gAlice->GetMCApp()->Particle(gAlice->GetMCApp()->GetCurrentTrackNumber());
952 hits[0] = fTrackPosition.X();
953 hits[1] = fTrackPosition.Y();
954 hits[2] = fTrackPosition.Z();
955 hits[3] = Float_t (gMC->TrackPid());
956 hits[4] = gMC->TrackTime();
957 hits[5] = gMC->TrackCharge();
958 hits[6] = fTrackMomentum.Theta()*TMath::RadToDeg();
959 hits[7] = fTrackMomentum.Phi()*TMath::RadToDeg();
960 hits[8] = ringNumber;
962 hits[10] = fTrackMomentum.P();
963 hits[11] = fTrackMomentum.Px();
964 hits[12] = fTrackMomentum.Py();
965 hits[13] = fTrackMomentum.Pz();
966 hits[14] = par->Vx();
967 hits[15] = par->Vy();
968 hits[16] = par->Vz();
972 //////////////////////////
973 ///// Display V0A geometry
976 // of = fopen("V0A.out", "a");
977 // // x, y, z, ringnumber, cellid
978 // fprintf( of, "%f %f %f %f %d \n", hits[0], hits[1], hits[2], hits[8], GetCellId (vol, hits) );
981 //////////////////////////
983 nPhotons = nPhotons + nPhotonsInStep;
984 if( gMC->IsTrackExiting() || gMC->IsTrackStop() || gMC->IsTrackDisappeared()){
985 nPhotons = nPhotons - Int_t((Float_t(nPhotons) * lightAttenuation * nMeters));
986 nPhotons = nPhotons - Int_t( Float_t(nPhotons) * fibToPhot);
990 hits[20] = GetCellId (vol, hits);
991 AddHit(gAlice->GetMCApp()->GetCurrentTrackNumber(), vol, hits);
1001 //_____________________________________________________________________________
1002 void AliVZEROv7::AddHit(Int_t track, Int_t *vol, Float_t *hits)
1006 TClonesArray &lhits = *fHits;
1007 new(lhits[fNhits++]) AliVZEROhit(fIshunt,track,vol,hits);
1010 //_____________________________________________________________________________
1011 void AliVZEROv7::AddDigits(Int_t *tracks, Int_t* digits)
1013 // Adds a VZERO digit
1015 TClonesArray &ldigits = *fDigits;
1016 new(ldigits[fNdigits++]) AliVZEROdigit(tracks, digits);
1019 //_____________________________________________________________________________
1020 void AliVZEROv7::MakeBranch(Option_t *option)
1022 // Creates new branches in the current Root Tree
1024 char branchname[10];
1025 sprintf(branchname,"%s",GetName());
1026 AliDebug(2,Form("fBufferSize = %d",fBufferSize));
1027 const char *cH = strstr(option,"H");
1028 if (fHits && TreeH() && cH) {
1029 TreeH()->Branch(branchname,&fHits, fBufferSize);
1030 AliDebug(2,Form("Making Branch %s for hits",branchname));
1032 const char *cD = strstr(option,"D");
1033 if (fDigits && fLoader->TreeD() && cD) {
1034 fLoader->TreeD()->Branch(branchname,&fDigits, fBufferSize);
1035 AliDebug(2,Form("Making Branch %s for digits",branchname));
1039 //_____________________________________________________________________________
1040 Int_t AliVZEROv7::GetCellId(Int_t *vol, Float_t *hits)
1042 // Returns Id of scintillator cell
1043 // Right side from 0 to 47
1044 // Left side from 48 to 79
1045 // hits[8] = ring number (1 to 4)
1046 // vol[1] = copy number (1 to 8)
1048 Int_t index = vol[1];
1049 Int_t ringNumber = Int_t(hits[8]);
1052 Float_t phi = Float_t(TMath::ATan2(Double_t(hits[1]),Double_t(hits[0])) );
1053 Float_t kRaddeg = 180.0/TMath::Pi();
1054 phi = kRaddeg * phi;
1056 if (index < 7) index = index + 8;
1058 if (hits[2] < 0.0) {
1059 if(ringNumber < 3) {
1060 index = (index - 7) + ( ( ringNumber - 1 ) * 8);
1061 } else if (ringNumber >= 3) {
1062 if ( gMC->CurrentVolID(vol[1]) == gMC->VolId("V0R3") || gMC->CurrentVolID(vol[1])
1063 == gMC->VolId("V0R5") ) index = (index*2-14)+((ringNumber-2)*16);
1064 if ( gMC->CurrentVolID(vol[1]) == gMC->VolId("V0R4") || gMC->CurrentVolID(vol[1])
1065 == gMC->VolId("V0R6") ) index = (index*2-13)+((ringNumber-2)*16);
1068 } else if (hits[2] > 0.0) {
1069 index = (index - 7 + 48) + ( ( ringNumber - 1 ) * 8);