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 **************************************************************************/
17 ///////////////////////////////////////////////////////////////////////
19 // AliZDCv2 --- new ZDC geometry //
20 // with the EM ZDC at about 10 m from IP //
21 // Just one set of ZDC is inserted //
22 // (on the same side of the dimuon arm realtive to IP) //
23 // Compensator in ZDC geometry (Nov. 2004) //
25 ///////////////////////////////////////////////////////////////////////
27 // --- Standard libraries
35 #include <TVirtualMC.h>
36 #include <TGeoManager.h>
38 // --- AliRoot classes
51 //_____________________________________________________________________________
52 AliZDCv2::AliZDCv2() :
74 // Default constructor for Zero Degree Calorimeter
79 //_____________________________________________________________________________
80 AliZDCv2::AliZDCv2(const char *name, const char *title)
104 // Standard constructor for Zero Degree Calorimeter
107 // Check that DIPO, ABSO, DIPO and SHIL is there (otherwise tracking is wrong!!!)
109 AliModule* pipe=gAlice->GetModule("PIPE");
110 AliModule* abso=gAlice->GetModule("ABSO");
111 AliModule* dipo=gAlice->GetModule("DIPO");
112 AliModule* shil=gAlice->GetModule("SHIL");
113 if((!pipe) || (!abso) || (!dipo) || (!shil)) {
114 Error("Constructor","ZDC needs PIPE, ABSO, DIPO and SHIL!!!\n");
128 // Parameters for light tables
129 fNalfan = 90; // Number of Alfa (neutrons)
130 fNalfap = 90; // Number of Alfa (protons)
131 fNben = 18; // Number of beta (neutrons)
132 fNbep = 28; // Number of beta (protons)
134 for(ip=0; ip<4; ip++){
135 for(kp=0; kp<fNalfap; kp++){
136 for(jp=0; jp<fNbep; jp++){
137 fTablep[ip][kp][jp] = 0;
142 for(in=0; in<4; in++){
143 for(kn=0; kn<fNalfan; kn++){
144 for(jn=0; jn<fNben; jn++){
145 fTablen[in][kn][jn] = 0;
150 // Parameters for hadronic calorimeters geometry
170 // Parameters for EM calorimeter geometry
175 Float_t kDimZEMPb = 0.15*(TMath::Sqrt(2.)); // z-dimension of the Pb slice
176 Float_t kDimZEMAir = 0.001; // scotch
177 Float_t kFibRadZEM = 0.0315; // External fiber radius (including cladding)
178 Int_t kDivZEM[3] = {92, 0, 20}; // Divisions for EM detector
179 Float_t kDimZEM0 = 2*kDivZEM[2]*(kDimZEMPb+kDimZEMAir+kFibRadZEM*(TMath::Sqrt(2.)));
180 fZEMLength = kDimZEM0;
184 //_____________________________________________________________________________
185 void AliZDCv2::CreateGeometry()
188 // Create the geometry for the Zero Degree Calorimeter version 2
189 //* Initialize COMMON block ZDC_CGEOM
196 //_____________________________________________________________________________
197 void AliZDCv2::CreateBeamLine()
200 // Create the beam line elements
203 Float_t zc, zq, zd1, zd2;
204 Float_t conpar[9], tubpar[3], tubspar[5], boxpar[3];
207 Int_t *idtmed = fIdtmed->GetArray();
209 // -- Mother of the ZDCs (Vacuum PCON)
210 // zd1 = 2092.; // (Without compensator in ZDC geometry)
222 gMC->Gsvolu("ZDC ", "PCON", idtmed[11], conpar, 9);
223 gMC->Gspos("ZDC ", 1, "ALIC", 0., 0., 0., 0, "ONLY");
225 // -- FIRST SECTION OF THE BEAM PIPE (from compensator dipole to
226 // the beginning of D1)
229 // From beginning of ZDC volumes to beginning of D1
230 tubpar[2] = (5838.3-zd1)/2.;
231 gMC->Gsvolu("QT01", "TUBE", idtmed[7], tubpar, 3);
232 gMC->Gspos("QT01", 1, "ZDC ", 0., 0., -tubpar[2]-zd1, 0, "ONLY");
234 //printf("\n QT01 TUBE pipe from z = %f to z= %f (D1 beg.)\n",-zd1,-2*tubpar[2]-zd1);
236 //-- SECOND SECTION OF THE BEAM PIPE (from the end of D1 to the
239 //-- FROM MAGNETIC BEGINNING OF D1 TO MAGNETIC END OF D1 + 13.5 cm
240 //-- Cylindrical pipe (r = 3.47) + conical flare
242 // -> Beginning of D1
246 tubpar[1] = 3.47+0.2;
247 tubpar[2] = 958.5/2.;
248 gMC->Gsvolu("QT02", "TUBE", idtmed[7], tubpar, 3);
249 gMC->Gspos("QT02", 1, "ZDC ", 0., 0., -tubpar[2]-zd1, 0, "ONLY");
251 //printf("\n QT02 TUBE pipe from z = %f to z= %f\n",-zd1,-2*tubpar[2]-zd1);
260 gMC->Gsvolu("QC01", "CONE", idtmed[7], conpar, 5);
261 gMC->Gspos("QC01", 1, "ZDC ", 0., 0., -conpar[0]-zd1, 0, "ONLY");
263 //printf("\n QC01 CONE pipe from z = %f to z= %f\n",-zd1,-2*conpar[0]-zd1);
270 gMC->Gsvolu("QT03", "TUBE", idtmed[7], tubpar, 3);
271 gMC->Gspos("QT03", 1, "ZDC ", 0., 0., -tubpar[2]-zd1, 0, "ONLY");
273 //printf("\n QT03 TUBE pipe from z = %f to z= %f\n",-zd1,-2*tubpar[2]-zd1);
280 gMC->Gsvolu("QT04", "TUBE", idtmed[7], tubpar, 3);
281 gMC->Gspos("QT04", 1, "ZDC ", 0., 0., -tubpar[2]-zd1, 0, "ONLY");
283 //printf("\n QT04 TUBE pipe from z = %f to z= %f\n",-zd1,-2*tubpar[2]-zd1);
285 zd1 += tubpar[2] * 2.;
290 gMC->Gsvolu("QT05", "TUBE", idtmed[7], tubpar, 3);
291 gMC->Gspos("QT05", 1, "ZDC ", 0., 0., -tubpar[0]-zd1, 0, "ONLY");
293 //printf("\n QT05 TUBE pipe from z = %f to z= %f\n",-zd1,-2*tubpar[2]-zd1);
295 zd1 += tubpar[2] * 2.;
300 gMC->Gsvolu("QT06", "TUBE", idtmed[7], tubpar, 3);
301 gMC->Gspos("QT06", 1, "ZDC ", 0., 0., -tubpar[2]-zd1, 0, "ONLY");
303 //printf("\n QT06 TUBE pipe from z = %f to z= %f\n",-zd1,-2*tubpar[2]-zd1);
305 zd1 += tubpar[2] * 2.;
312 gMC->Gsvolu("QC02", "CONE", idtmed[7], conpar, 5);
313 gMC->Gspos("QC02", 1, "ZDC ", 0., 0., -conpar[0]-zd1, 0, "ONLY");
315 //printf("\n QC02 CONE pipe from z = %f to z= %f\n",-zd1,-2*conpar[0]-zd1);
317 zd1 += conpar[0] * 2.;
322 gMC->Gsvolu("QT07", "TUBE", idtmed[7], tubpar, 3);
323 gMC->Gspos("QT07", 1, "ZDC ", 0., 0., -tubpar[2]-zd1, 0, "ONLY");
325 //printf("\n QT07 TUBE pipe from z = %f to z= %f\n",-zd1,-2*tubpar[2]-zd1);
327 zd1 += tubpar[2] * 2.;
334 gMC->Gsvolu("QC03", "CONE", idtmed[7], conpar, 5);
335 gMC->Gspos("QC03", 1, "ZDC ", 0., 0., -conpar[0]-zd1, 0, "ONLY");
337 //printf("\n QC03 CONE pipe from z = %f to z= %f\n",-zd1,-2*conpar[0]-zd1);
339 zd1 += conpar[0] * 2.;
343 tubpar[2] = 205.8/2.;
344 gMC->Gsvolu("QT08", "TUBE", idtmed[7], tubpar, 3);
345 gMC->Gspos("QT08", 1, "ZDC ", 0., 0., -tubpar[2]-zd1, 0, "ONLY");
347 //printf("\n QT08 TUBE pipe from z = %f to z= %f\n",-zd1,-2*tubpar[2]-zd1);
349 zd1 += tubpar[2] * 2.;
353 // QT09 is 10 cm longer to accomodate TDI
354 tubpar[2] = 515.4/2.;
355 gMC->Gsvolu("QT09", "TUBE", idtmed[7], tubpar, 3);
356 gMC->Gspos("QT09", 1, "ZDC ", 0., 0., -tubpar[2]-zd1, 0, "ONLY");
358 //printf("\n QT09 TUBE pipe from z = %f to z= %f\n",-zd1,-2*tubpar[2]-zd1);
360 // --- Insert TDI (inside ZDC volume)
364 gMC->Gsvolu("QTD1", "BOX ", idtmed[7], boxpar, 3);
365 gMC->Gspos("QTD1", 1, "ZDC ", -3., 10.6, -tubpar[2]-zd1-56.3, 0, "ONLY");
366 gMC->Gspos("QTD1", 2, "ZDC ", -3., -10.6, -tubpar[2]-zd1-56.3, 0, "ONLY");
371 gMC->Gsvolu("QTD2", "BOX ", idtmed[6], boxpar, 3);
372 gMC->Gspos("QTD2", 1, "ZDC ", -8.6-boxpar[0], 0., -tubpar[2]-zd1-56.3, 0, "ONLY");
374 tubspar[0] = 10.5; // R = 10.5 cm------------------------------------------
376 tubspar[2] = 400./2.;
377 tubspar[3] = 360.-75.5;
379 gMC->Gsvolu("QTD3", "TUBS", idtmed[6], tubspar, 5);
380 gMC->Gspos("QTD3", 1, "ZDC ", 0., 0., -tubpar[2]-zd1-56.3, 0, "ONLY");
382 //printf("\n TDI volume from z = %f to z= %f\n",-tubpar[2]-zd1-56.3,-tubpar[2]-zd1-56.3-400.);
384 zd1 += tubpar[2] * 2.;
388 // QT10 is 10 cm shorter
390 gMC->Gsvolu("QT10", "TUBE", idtmed[7], tubpar, 3);
391 gMC->Gspos("QT10", 1, "ZDC ", 0., 0., -tubpar[2]-zd1, 0, "ONLY");
393 //printf("\n QT10 TUBE pipe from z = %f to z= %f\n",-zd1,-2*tubpar[2]-zd1);
395 zd1 += tubpar[2] * 2.;
399 tubpar[2] = 778.5/2.;
400 gMC->Gsvolu("QT11", "TUBE", idtmed[7], tubpar, 3);
401 gMC->Gspos("QT11", 1, "ZDC ", 0., 0., -tubpar[2]-zd1, 0, "ONLY");
403 //printf("\n QT11 TUBE pipe from z = %f to z= %f\n",-zd1,-2*tubpar[2]-zd1);
405 zd1 += tubpar[2] * 2.;
407 conpar[0] = 14.18/2.;
412 gMC->Gsvolu("QC04", "CONE", idtmed[7], conpar, 5);
413 gMC->Gspos("QC04", 1, "ZDC ", 0., 0., -conpar[0]-zd1, 0, "ONLY");
415 //printf("\n QC04 CONE pipe from z = %f to z= %f\n",-zd1,-2*conpar[0]-zd1);
417 zd1 += conpar[0] * 2.;
422 gMC->Gsvolu("QT12", "TUBE", idtmed[7], tubpar, 3);
423 gMC->Gspos("QT12", 1, "ZDC ", 0., 0., -tubpar[2]-zd1, 0, "ONLY");
425 //printf("\n QT12 TUBE pipe from z = %f to z= %f\n",-zd1,-2*tubpar[2]-zd1);
427 zd1 += tubpar[2] * 2.;
429 conpar[0] = 36.86/2.;
434 gMC->Gsvolu("QC05", "CONE", idtmed[7], conpar, 5);
435 gMC->Gspos("QC05", 1, "ZDC ", 0., 0., -conpar[0]-zd1, 0, "ONLY");
437 //printf("\n QC05 CONE pipe from z = %f to z= %f\n",-zd1,-2*conpar[0]-zd1);
439 zd1 += conpar[0] * 2.;
443 tubpar[2] = 927.3/2.;
444 gMC->Gsvolu("QT13", "TUBE", idtmed[7], tubpar, 3);
445 gMC->Gspos("QT13", 1, "ZDC ", 0., 0., -tubpar[2]-zd1, 0, "ONLY");
447 //printf("\n QT13 TUBE pipe from z = %f to z= %f\n",-zd1,-2*tubpar[2]-zd1);
449 zd1 += tubpar[2] * 2.;
454 gMC->Gsvolu("QT14", "TUBE", idtmed[8], tubpar, 3);
455 gMC->Gspos("QT14", 1, "ZDC ", 0., 0., -tubpar[2]-zd1, 0, "ONLY");
457 //printf("\n QT14 TUBE pipe from z = %f to z= %f\n",-zd1,-2*tubpar[2]-zd1);
459 zd1 += tubpar[2] * 2.;
464 gMC->Gsvolu("QT15", "TUBE", idtmed[11], tubpar, 3);
465 //-- Position QT15 inside QT14
466 gMC->Gspos("QT15", 1, "QT14", -7.7, 0., 0., 0, "ONLY");
468 gMC->Gsvolu("QT16", "TUBE", idtmed[11], tubpar, 3);
469 //-- Position QT16 inside QT14
470 gMC->Gspos("QT16", 1, "QT14", 7.7, 0., 0., 0, "ONLY");
473 //-- BEAM PIPE BETWEEN END OF CONICAL PIPE AND BEGINNING OF D2
477 tubpar[2] = 680.8/2.;
478 gMC->Gsvolu("QT17", "TUBE", idtmed[7], tubpar, 3);
482 tubpar[2] = 680.8/2.;
483 gMC->Gsvolu("QT18", "TUBE", idtmed[7], tubpar, 3);
486 Float_t angle = 0.143*kDegrad; // Rotation angle
488 //AliMatrix(im1, 90.+0.143, 0., 90., 90., 0.143, 0.); // x<0
489 gMC->Matrix(im1, 90.+0.143, 0., 90., 90., 0.143, 0.); // x<0
490 gMC->Gspos("QT17", 1, "ZDC ", TMath::Sin(angle) * 680.8/ 2. - 9.4,
491 0., -tubpar[2]-zd1, im1, "ONLY");
493 //AliMatrix(im2, 90.-0.143, 0., 90., 90., 0.143, 180.); // x>0 (ZP)
494 gMC->Matrix(im2, 90.-0.143, 0., 90., 90., 0.143, 180.); // x>0 (ZP)
495 gMC->Gspos("QT18", 1, "ZDC ", 9.7 - TMath::Sin(angle) * 680.8 / 2.,
496 0., -tubpar[2]-zd1, im2, "ONLY");
498 // -- END OF BEAM PIPE VOLUME DEFINITION.
499 // ----------------------------------------------------------------
501 // ----------------------------------------------------------------
502 // -- MAGNET DEFINITION -> LHC OPTICS 6.5
503 // ----------------------------------------------------------------
504 // -- COMPENSATOR DIPOLE (MBXW)
507 // -- GAP (VACUUM WITH MAGNETIC FIELD)
511 gMC->Gsvolu("MBXW", "TUBE", idtmed[11], tubpar, 3);
517 gMC->Gsvolu("YMBX", "TUBE", idtmed[13], tubpar, 3);
519 gMC->Gspos("MBXW", 1, "ZDC ", 0., 0., -tubpar[2]-zc, 0, "ONLY");
520 gMC->Gspos("YMBX", 1, "ZDC ", 0., 0., -tubpar[2]-zc, 0, "ONLY");
526 // -- DEFINE MQXL AND MQX QUADRUPOLE ELEMENT
528 // -- GAP (VACUUM WITH MAGNETIC FIELD)
532 gMC->Gsvolu("MQXL", "TUBE", idtmed[11], tubpar, 3);
539 gMC->Gsvolu("YMQL", "TUBE", idtmed[7], tubpar, 3);
541 gMC->Gspos("MQXL", 1, "ZDC ", 0., 0., -tubpar[2]-zq, 0, "ONLY");
542 gMC->Gspos("YMQL", 1, "ZDC ", 0., 0., -tubpar[2]-zq, 0, "ONLY");
544 gMC->Gspos("MQXL", 2, "ZDC ", 0., 0., -tubpar[2]-zq-2430., 0, "ONLY");
545 gMC->Gspos("YMQL", 2, "ZDC ", 0., 0., -tubpar[2]-zq-2430., 0, "ONLY");
548 // -- GAP (VACUUM WITH MAGNETIC FIELD)
552 gMC->Gsvolu("MQX ", "TUBE", idtmed[11], tubpar, 3);
558 gMC->Gsvolu("YMQ ", "TUBE", idtmed[7], tubpar, 3);
560 gMC->Gspos("MQX ", 1, "ZDC ", 0., 0., -tubpar[2]-zq-908.5, 0, "ONLY");
561 gMC->Gspos("YMQ ", 1, "ZDC ", 0., 0., -tubpar[2]-zq-908.5, 0, "ONLY");
563 gMC->Gspos("MQX ", 2, "ZDC ", 0., 0., -tubpar[2]-zq-1558.5, 0, "ONLY");
564 gMC->Gspos("YMQ ", 2, "ZDC ", 0., 0., -tubpar[2]-zq-1558.5, 0, "ONLY");
566 // -- SEPARATOR DIPOLE D1
569 // -- GAP (VACUUM WITH MAGNETIC FIELD)
573 gMC->Gsvolu("MD1 ", "TUBE", idtmed[11], tubpar, 3);
575 // -- Insert horizontal Cu plates inside D1
576 // -- (to simulate the vacuum chamber)
577 boxpar[0] = TMath::Sqrt(tubpar[1]*tubpar[1]-(2.98+0.2)*(2.98+0.2)) - 0.05;
580 gMC->Gsvolu("MD1V", "BOX ", idtmed[6], boxpar, 3);
581 gMC->Gspos("MD1V", 1, "MD1 ", 0., 2.98+boxpar[1], 0., 0, "ONLY");
582 gMC->Gspos("MD1V", 2, "MD1 ", 0., -2.98-boxpar[1], 0., 0, "ONLY");
588 gMC->Gsvolu("YD1 ", "TUBE", idtmed[7], tubpar, 3);
590 gMC->Gspos("YD1 ", 1, "ZDC ", 0., 0., -tubpar[2]-zd1, 0, "ONLY");
591 gMC->Gspos("MD1 ", 1, "YD1 ", 0., 0., 0., 0, "ONLY");
594 // --- LHC optics v6.4
597 // -- GAP (VACUUM WITH MAGNETIC FIELD)
601 gMC->Gsvolu("MD2 ", "TUBE", idtmed[11], tubpar, 3);
607 gMC->Gsvolu("YD2 ", "TUBE", idtmed[7], tubpar, 3);
609 gMC->Gspos("YD2 ", 1, "ZDC ", 0., 0., -tubpar[2]-zd2, 0, "ONLY");
611 gMC->Gspos("MD2 ", 1, "YD2 ", -9.4, 0., 0., 0, "ONLY");
612 gMC->Gspos("MD2 ", 2, "YD2 ", 9.4, 0., 0., 0, "ONLY");
614 // -- END OF MAGNET DEFINITION
617 //_____________________________________________________________________________
618 void AliZDCv2::CreateZDC()
621 // Create the various ZDCs (ZN + ZP)
624 Float_t dimPb[6], dimVoid[6];
626 Int_t *idtmed = fIdtmed->GetArray();
628 // Parameters for hadronic calorimeters geometry
629 // NB -> parameters used ONLY in CreateZDC()
630 Float_t fGrvZN[3] = {0.03, 0.03, 50.}; // Grooves for neutron detector
631 Float_t fGrvZP[3] = {0.04, 0.04, 75.}; // Grooves for proton detector
632 Int_t fDivZN[3] = {11, 11, 0}; // Division for neutron detector
633 Int_t fDivZP[3] = {7, 15, 0}; // Division for proton detector
634 Int_t fTowZN[2] = {2, 2}; // Tower for neutron detector
635 Int_t fTowZP[2] = {4, 1}; // Tower for proton detector
637 // Parameters for EM calorimeter geometry
638 // NB -> parameters used ONLY in CreateZDC()
639 Float_t kDimZEMPb = 0.15*(TMath::Sqrt(2.)); // z-dimension of the Pb slice
640 Float_t kFibRadZEM = 0.0315; // External fiber radius (including cladding)
641 Int_t fDivZEM[3] = {92, 0, 20}; // Divisions for EM detector
642 Float_t fDimZEM[6] = {fZEMLength, 3.5, 3.5, 45., 0., 0.}; // Dimensions of EM detector
643 Float_t fFibZEM2 = fDimZEM[2]/TMath::Sin(fDimZEM[3]*kDegrad)-kFibRadZEM;
644 Float_t fFibZEM[3] = {0., 0.0275, fFibZEM2}; // Fibers for EM calorimeter
647 //-- Create calorimeters geometry
649 // -------------------------------------------------------------------------------
650 //--> Neutron calorimeter (ZN)
652 gMC->Gsvolu("ZNEU", "BOX ", idtmed[1], fDimZN, 3); // Passive material
653 gMC->Gsvolu("ZNF1", "TUBE", idtmed[3], fFibZN, 3); // Active material
654 gMC->Gsvolu("ZNF2", "TUBE", idtmed[4], fFibZN, 3);
655 gMC->Gsvolu("ZNF3", "TUBE", idtmed[4], fFibZN, 3);
656 gMC->Gsvolu("ZNF4", "TUBE", idtmed[3], fFibZN, 3);
657 gMC->Gsvolu("ZNG1", "BOX ", idtmed[12], fGrvZN, 3); // Empty grooves
658 gMC->Gsvolu("ZNG2", "BOX ", idtmed[12], fGrvZN, 3);
659 gMC->Gsvolu("ZNG3", "BOX ", idtmed[12], fGrvZN, 3);
660 gMC->Gsvolu("ZNG4", "BOX ", idtmed[12], fGrvZN, 3);
662 // Divide ZNEU in towers (for hits purposes)
664 gMC->Gsdvn("ZNTX", "ZNEU", fTowZN[0], 1); // x-tower
665 gMC->Gsdvn("ZN1 ", "ZNTX", fTowZN[1], 2); // y-tower
667 //-- Divide ZN1 in minitowers
668 // fDivZN[0]= NUMBER OF FIBERS PER TOWER ALONG X-AXIS,
669 // fDivZN[1]= NUMBER OF FIBERS PER TOWER ALONG Y-AXIS
670 // (4 fibres per minitower)
672 gMC->Gsdvn("ZNSL", "ZN1 ", fDivZN[1], 2); // Slices
673 gMC->Gsdvn("ZNST", "ZNSL", fDivZN[0], 1); // Sticks
675 // --- Position the empty grooves in the sticks (4 grooves per stick)
676 Float_t dx = fDimZN[0] / fDivZN[0] / 4.;
677 Float_t dy = fDimZN[1] / fDivZN[1] / 4.;
679 gMC->Gspos("ZNG1", 1, "ZNST", 0.-dx, 0.+dy, 0., 0, "ONLY");
680 gMC->Gspos("ZNG2", 1, "ZNST", 0.+dx, 0.+dy, 0., 0, "ONLY");
681 gMC->Gspos("ZNG3", 1, "ZNST", 0.-dx, 0.-dy, 0., 0, "ONLY");
682 gMC->Gspos("ZNG4", 1, "ZNST", 0.+dx, 0.-dy, 0., 0, "ONLY");
684 // --- Position the fibers in the grooves
685 gMC->Gspos("ZNF1", 1, "ZNG1", 0., 0., 0., 0, "ONLY");
686 gMC->Gspos("ZNF2", 1, "ZNG2", 0., 0., 0., 0, "ONLY");
687 gMC->Gspos("ZNF3", 1, "ZNG3", 0., 0., 0., 0, "ONLY");
688 gMC->Gspos("ZNF4", 1, "ZNG4", 0., 0., 0., 0, "ONLY");
690 // --- Position the neutron calorimeter in ZDC
691 // -- Rotation of ZDCs
693 gMC->Matrix(irotzdc, 90., 180., 90., 90., 180., 0.);
695 gMC->Gspos("ZNEU", 1, "ZDC ", fPosZN[0], fPosZN[1], fPosZN[2]-fDimZN[2], irotzdc, "ONLY");
697 //printf("\n ZN -> %f < z < %f cm\n",fPosZN[2],fPosZN[2]-2*fDimZN[2]);
699 // -------------------------------------------------------------------------------
700 //--> Proton calorimeter (ZP)
702 gMC->Gsvolu("ZPRO", "BOX ", idtmed[2], fDimZP, 3); // Passive material
703 gMC->Gsvolu("ZPF1", "TUBE", idtmed[3], fFibZP, 3); // Active material
704 gMC->Gsvolu("ZPF2", "TUBE", idtmed[4], fFibZP, 3);
705 gMC->Gsvolu("ZPF3", "TUBE", idtmed[4], fFibZP, 3);
706 gMC->Gsvolu("ZPF4", "TUBE", idtmed[3], fFibZP, 3);
707 gMC->Gsvolu("ZPG1", "BOX ", idtmed[12], fGrvZP, 3); // Empty grooves
708 gMC->Gsvolu("ZPG2", "BOX ", idtmed[12], fGrvZP, 3);
709 gMC->Gsvolu("ZPG3", "BOX ", idtmed[12], fGrvZP, 3);
710 gMC->Gsvolu("ZPG4", "BOX ", idtmed[12], fGrvZP, 3);
712 //-- Divide ZPRO in towers(for hits purposes)
714 gMC->Gsdvn("ZPTX", "ZPRO", fTowZP[0], 1); // x-tower
715 gMC->Gsdvn("ZP1 ", "ZPTX", fTowZP[1], 2); // y-tower
718 //-- Divide ZP1 in minitowers
719 // fDivZP[0]= NUMBER OF FIBERS ALONG X-AXIS PER MINITOWER,
720 // fDivZP[1]= NUMBER OF FIBERS ALONG Y-AXIS PER MINITOWER
721 // (4 fiber per minitower)
723 gMC->Gsdvn("ZPSL", "ZP1 ", fDivZP[1], 2); // Slices
724 gMC->Gsdvn("ZPST", "ZPSL", fDivZP[0], 1); // Sticks
726 // --- Position the empty grooves in the sticks (4 grooves per stick)
727 dx = fDimZP[0] / fTowZP[0] / fDivZP[0] / 2.;
728 dy = fDimZP[1] / fTowZP[1] / fDivZP[1] / 2.;
730 gMC->Gspos("ZPG1", 1, "ZPST", 0.-dx, 0.+dy, 0., 0, "ONLY");
731 gMC->Gspos("ZPG2", 1, "ZPST", 0.+dx, 0.+dy, 0., 0, "ONLY");
732 gMC->Gspos("ZPG3", 1, "ZPST", 0.-dx, 0.-dy, 0., 0, "ONLY");
733 gMC->Gspos("ZPG4", 1, "ZPST", 0.+dx, 0.-dy, 0., 0, "ONLY");
735 // --- Position the fibers in the grooves
736 gMC->Gspos("ZPF1", 1, "ZPG1", 0., 0., 0., 0, "ONLY");
737 gMC->Gspos("ZPF2", 1, "ZPG2", 0., 0., 0., 0, "ONLY");
738 gMC->Gspos("ZPF3", 1, "ZPG3", 0., 0., 0., 0, "ONLY");
739 gMC->Gspos("ZPF4", 1, "ZPG4", 0., 0., 0., 0, "ONLY");
742 // --- Position the proton calorimeter in ZDC
743 gMC->Gspos("ZPRO", 1, "ZDC ", fPosZP[0], fPosZP[1], fPosZP[2]-fDimZP[2], irotzdc, "ONLY");
745 //printf("\n ZP -> %f < z < %f cm\n",fPosZP[2],fPosZP[2]-2*fDimZP[2]);
748 // -------------------------------------------------------------------------------
749 // -> EM calorimeter (ZEM)
751 gMC->Gsvolu("ZEM ", "PARA", idtmed[10], fDimZEM, 6);
754 gMC->Matrix(irot1,0.,0.,90.,90.,-90.,0.); // Rotation matrix 1
755 gMC->Matrix(irot2,180.,0.,90.,fDimZEM[3]+90.,90.,fDimZEM[3]);// Rotation matrix 2
756 //printf("irot1 = %d, irot2 = %d \n", irot1, irot2);
758 gMC->Gsvolu("ZEMF", "TUBE", idtmed[3], fFibZEM, 3); // Active material
760 gMC->Gsdvn("ZETR", "ZEM ", fDivZEM[2], 1); // Tranches
762 dimPb[0] = kDimZEMPb; // Lead slices
763 dimPb[1] = fDimZEM[2];
764 dimPb[2] = fDimZEM[1];
765 //dimPb[3] = fDimZEM[3]; //controllare
766 dimPb[3] = 90.-fDimZEM[3]; //originale
769 gMC->Gsvolu("ZEL0", "PARA", idtmed[5], dimPb, 6);
770 gMC->Gsvolu("ZEL1", "PARA", idtmed[5], dimPb, 6);
771 gMC->Gsvolu("ZEL2", "PARA", idtmed[5], dimPb, 6);
773 // --- Position the lead slices in the tranche
774 Float_t zTran = fDimZEM[0]/fDivZEM[2];
775 Float_t zTrPb = -zTran+kDimZEMPb;
776 gMC->Gspos("ZEL0", 1, "ZETR", zTrPb, 0., 0., 0, "ONLY");
777 gMC->Gspos("ZEL1", 1, "ZETR", kDimZEMPb, 0., 0., 0, "ONLY");
779 // --- Vacuum zone (to be filled with fibres)
780 dimVoid[0] = (zTran-2*kDimZEMPb)/2.;
781 dimVoid[1] = fDimZEM[2];
782 dimVoid[2] = fDimZEM[1];
783 dimVoid[3] = 90.-fDimZEM[3];
786 gMC->Gsvolu("ZEV0", "PARA", idtmed[10], dimVoid,6);
787 gMC->Gsvolu("ZEV1", "PARA", idtmed[10], dimVoid,6);
789 // --- Divide the vacuum slice into sticks along x axis
790 gMC->Gsdvn("ZES0", "ZEV0", fDivZEM[0], 3);
791 gMC->Gsdvn("ZES1", "ZEV1", fDivZEM[0], 3);
793 // --- Positioning the fibers into the sticks
794 gMC->Gspos("ZEMF", 1,"ZES0", 0., 0., 0., irot2, "ONLY");
795 gMC->Gspos("ZEMF", 1,"ZES1", 0., 0., 0., irot2, "ONLY");
797 // --- Positioning the vacuum slice into the tranche
798 Float_t displFib = fDimZEM[1]/fDivZEM[0];
799 gMC->Gspos("ZEV0", 1,"ZETR", -dimVoid[0], 0., 0., 0, "ONLY");
800 gMC->Gspos("ZEV1", 1,"ZETR", -dimVoid[0]+zTran, 0., displFib, 0, "ONLY");
802 // --- Positioning the ZEM into the ZDC - rotation for 90 degrees
803 // NB -> In AliZDCv2 ZEM is positioned in ALIC (instead of in ZDC) volume
804 // beacause it's impossible to make a ZDC pcon volume to contain
805 // both hadronics and EM calorimeters.
806 gMC->Gspos("ZEM ", 1,"ALIC", -fPosZEM[0], fPosZEM[1], fPosZEM[2]+fDimZEM[0], irot1, "ONLY");
808 // Second EM ZDC (same side w.r.t. IP, just on the other side w.r.t. beam pipe)
809 gMC->Gspos("ZEM ", 2,"ALIC", fPosZEM[0], fPosZEM[1], fPosZEM[2]+fDimZEM[0], irot1, "ONLY");
811 // --- Adding last slice at the end of the EM calorimeter
812 Float_t zLastSlice = fPosZEM[2]+kDimZEMPb+2*fDimZEM[0];
813 gMC->Gspos("ZEL2", 1,"ALIC", fPosZEM[0], fPosZEM[1], zLastSlice, irot1, "ONLY");
815 //printf("\n ZEM lenght = %f cm\n",2*fZEMLength);
816 //printf("\n ZEM -> %f < z < %f cm\n",fPosZEM[2],fPosZEM[2]+2*fZEMLength+zLastSlice+kDimZEMPb);
820 //_____________________________________________________________________________
821 void AliZDCv2::DrawModule() const
824 // Draw a shaded view of the Zero Degree Calorimeter version 1
827 // Set everything unseen
828 gMC->Gsatt("*", "seen", -1);
830 // Set ALIC mother transparent
831 gMC->Gsatt("ALIC","SEEN",0);
833 // Set the volumes visible
834 gMC->Gsatt("ZDC ","SEEN",0);
835 gMC->Gsatt("QT01","SEEN",1);
836 gMC->Gsatt("QT02","SEEN",1);
837 gMC->Gsatt("QT03","SEEN",1);
838 gMC->Gsatt("QT04","SEEN",1);
839 gMC->Gsatt("QT05","SEEN",1);
840 gMC->Gsatt("QT06","SEEN",1);
841 gMC->Gsatt("QT07","SEEN",1);
842 gMC->Gsatt("QT08","SEEN",1);
843 gMC->Gsatt("QT09","SEEN",1);
844 gMC->Gsatt("QT10","SEEN",1);
845 gMC->Gsatt("QT11","SEEN",1);
846 gMC->Gsatt("QT12","SEEN",1);
847 gMC->Gsatt("QT13","SEEN",1);
848 gMC->Gsatt("QT14","SEEN",1);
849 gMC->Gsatt("QT15","SEEN",1);
850 gMC->Gsatt("QT16","SEEN",1);
851 gMC->Gsatt("QT17","SEEN",1);
852 gMC->Gsatt("QT18","SEEN",1);
853 gMC->Gsatt("QC01","SEEN",1);
854 gMC->Gsatt("QC02","SEEN",1);
855 gMC->Gsatt("QC03","SEEN",1);
856 gMC->Gsatt("QC04","SEEN",1);
857 gMC->Gsatt("QC05","SEEN",1);
858 gMC->Gsatt("QTD1","SEEN",1);
859 gMC->Gsatt("QTD2","SEEN",1);
860 gMC->Gsatt("QTD3","SEEN",1);
861 gMC->Gsatt("MQXL","SEEN",1);
862 gMC->Gsatt("YMQL","SEEN",1);
863 gMC->Gsatt("MQX ","SEEN",1);
864 gMC->Gsatt("YMQ ","SEEN",1);
865 gMC->Gsatt("ZQYX","SEEN",1);
866 gMC->Gsatt("MD1 ","SEEN",1);
867 gMC->Gsatt("MD1V","SEEN",1);
868 gMC->Gsatt("YD1 ","SEEN",1);
869 gMC->Gsatt("MD2 ","SEEN",1);
870 gMC->Gsatt("YD2 ","SEEN",1);
871 gMC->Gsatt("ZNEU","SEEN",0);
872 gMC->Gsatt("ZNF1","SEEN",0);
873 gMC->Gsatt("ZNF2","SEEN",0);
874 gMC->Gsatt("ZNF3","SEEN",0);
875 gMC->Gsatt("ZNF4","SEEN",0);
876 gMC->Gsatt("ZNG1","SEEN",0);
877 gMC->Gsatt("ZNG2","SEEN",0);
878 gMC->Gsatt("ZNG3","SEEN",0);
879 gMC->Gsatt("ZNG4","SEEN",0);
880 gMC->Gsatt("ZNTX","SEEN",0);
881 gMC->Gsatt("ZN1 ","COLO",4);
882 gMC->Gsatt("ZN1 ","SEEN",1);
883 gMC->Gsatt("ZNSL","SEEN",0);
884 gMC->Gsatt("ZNST","SEEN",0);
885 gMC->Gsatt("ZPRO","SEEN",0);
886 gMC->Gsatt("ZPF1","SEEN",0);
887 gMC->Gsatt("ZPF2","SEEN",0);
888 gMC->Gsatt("ZPF3","SEEN",0);
889 gMC->Gsatt("ZPF4","SEEN",0);
890 gMC->Gsatt("ZPG1","SEEN",0);
891 gMC->Gsatt("ZPG2","SEEN",0);
892 gMC->Gsatt("ZPG3","SEEN",0);
893 gMC->Gsatt("ZPG4","SEEN",0);
894 gMC->Gsatt("ZPTX","SEEN",0);
895 gMC->Gsatt("ZP1 ","COLO",6);
896 gMC->Gsatt("ZP1 ","SEEN",1);
897 gMC->Gsatt("ZPSL","SEEN",0);
898 gMC->Gsatt("ZPST","SEEN",0);
899 gMC->Gsatt("ZEM ","COLO",7);
900 gMC->Gsatt("ZEM ","SEEN",1);
901 gMC->Gsatt("ZEMF","SEEN",0);
902 gMC->Gsatt("ZETR","SEEN",0);
903 gMC->Gsatt("ZEL0","SEEN",0);
904 gMC->Gsatt("ZEL1","SEEN",0);
905 gMC->Gsatt("ZEL2","SEEN",0);
906 gMC->Gsatt("ZEV0","SEEN",0);
907 gMC->Gsatt("ZEV1","SEEN",0);
908 gMC->Gsatt("ZES0","SEEN",0);
909 gMC->Gsatt("ZES1","SEEN",0);
912 gMC->Gdopt("hide", "on");
913 gMC->Gdopt("shad", "on");
914 gMC->Gsatt("*", "fill", 7);
915 gMC->SetClipBox(".");
916 gMC->SetClipBox("*", 0, 100, -100, 100, 12000, 16000);
918 gMC->Gdraw("alic", 40, 30, 0, 488, 220, .07, .07);
919 gMC->Gdhead(1111, "Zero Degree Calorimeter Version 1");
920 gMC->Gdman(18, 4, "MAN");
923 //_____________________________________________________________________________
924 void AliZDCv2::CreateMaterials()
927 // Create Materials for the Zero Degree Calorimeter
930 Float_t dens, ubuf[1], wmat[2], a[2], z[2];
932 // --- Store in UBUF r0 for nuclear radius calculation R=r0*A**1/3
934 // --- Tantalum -> ZN passive material
936 AliMaterial(1, "TANT", 180.95, 73., 16.65, .4, 11.9, ubuf, 1);
940 // AliMaterial(1, "TUNG", 183.85, 74., 19.3, .35, 10.3, ubuf, 1);
942 // --- Brass (CuZn) -> ZP passive material
950 AliMixture(2, "BRASS ", a, z, dens, 2, wmat);
960 AliMixture(3, "SIO2 ", a, z, dens, -2, wmat);
964 AliMaterial(5, "LEAD", 207.19, 82., 11.35, .56, 18.5, ubuf, 1);
968 AliMaterial(6, "COPP", 63.54, 29., 8.96, 1.4, 0., ubuf, 1);
970 // --- Iron (energy loss taken into account)
972 AliMaterial(7, "IRON0", 55.85, 26., 7.87, 1.76, 0., ubuf, 1);
974 // --- Iron (no energy loss)
976 AliMaterial(8, "IRON1", 55.85, 26., 7.87, 1.76, 0., ubuf, 1);
977 AliMaterial(13, "IRON2", 55.85, 26., 7.87, 1.76, 0., ubuf, 1);
979 // ---------------------------------------------------------
980 Float_t aResGas[3]={1.008,12.0107,15.9994};
981 Float_t zResGas[3]={1.,6.,8.};
982 Float_t wResGas[3]={0.28,0.28,0.44};
983 Float_t dResGas = 3.2E-14;
985 // --- Vacuum (no magnetic field)
986 AliMixture(10, "VOID", aResGas, zResGas, dResGas, 3, wResGas);
987 //AliMaterial(10, "VOID", 1e-16, 1e-16, 1e-16, 1e16, 1e16, ubuf,0);
989 // --- Vacuum (with magnetic field)
990 AliMixture(11, "VOIM", aResGas, zResGas, dResGas, 3, wResGas);
991 //AliMaterial(11, "VOIM", 1e-16, 1e-16, 1e-16, 1e16, 1e16, ubuf,0);
993 // --- Air (no magnetic field)
994 Float_t aAir[4]={12.0107,14.0067,15.9994,39.948};
995 Float_t zAir[4]={6.,7.,8.,18.};
996 Float_t wAir[4]={0.000124,0.755267,0.231781,0.012827};
997 Float_t dAir = 1.20479E-3;
999 AliMixture(12, "Air $", aAir, zAir, dAir, 4, wAir);
1000 //AliMaterial(12, "Air $", 14.61, 7.3, .001205, 30420., 67500., ubuf, 0);
1002 // --- Definition of tracking media:
1004 // --- Tantalum = 1 ;
1006 // --- Fibers (SiO2) = 3 ;
1007 // --- Fibers (SiO2) = 4 ;
1010 // --- Iron (with energy loss) = 7 ;
1011 // --- Iron (without energy loss) = 8 ;
1012 // --- Vacuum (no field) = 10
1013 // --- Vacuum (with field) = 11
1014 // --- Air (no field) = 12
1016 // ****************************************************
1017 // Tracking media parameters
1019 Float_t epsil = 0.01; // Tracking precision,
1020 Float_t stmin = 0.01; // Min. value 4 max. step (cm)
1021 Float_t stemax = 1.; // Max. step permitted (cm)
1022 Float_t tmaxfd = 0.; // Maximum angle due to field (degrees)
1023 Float_t deemax = -1.; // Maximum fractional energy loss
1024 Float_t nofieldm = 0.; // Max. field value (no field)
1025 Float_t fieldm = 45.; // Max. field value (with field)
1026 Int_t isvol = 0; // ISVOL =0 -> not sensitive volume
1027 Int_t isvolActive = 1; // ISVOL =1 -> sensitive volume
1028 Int_t inofld = 0; // IFIELD=0 -> no magnetic field
1029 Int_t ifield =2; // IFIELD=2 -> magnetic field defined in AliMagFC.h
1030 // *****************************************************
1032 AliMedium(1, "ZTANT", 1, isvolActive, inofld, nofieldm, tmaxfd, stemax, deemax, epsil, stmin);
1033 AliMedium(2, "ZBRASS",2, isvolActive, inofld, nofieldm, tmaxfd, stemax, deemax, epsil, stmin);
1034 AliMedium(3, "ZSIO2", 3, isvolActive, inofld, nofieldm, tmaxfd, stemax, deemax, epsil, stmin);
1035 AliMedium(4, "ZQUAR", 3, isvolActive, inofld, nofieldm, tmaxfd, stemax, deemax, epsil, stmin);
1036 AliMedium(5, "ZLEAD", 5, isvolActive, inofld, nofieldm, tmaxfd, stemax, deemax, epsil, stmin);
1037 AliMedium(6, "ZCOPP", 6, isvol, inofld, nofieldm, tmaxfd, stemax, deemax, epsil, stmin);
1038 AliMedium(7, "ZIRON", 7, isvol, inofld, nofieldm, tmaxfd, stemax, deemax, epsil, stmin);
1039 AliMedium(8, "ZIRONN",8, isvol, inofld, nofieldm, tmaxfd, stemax, deemax, epsil, stmin);
1040 AliMedium(10,"ZVOID",10, isvol, inofld, nofieldm, tmaxfd, stemax, deemax, epsil, stmin);
1041 AliMedium(12,"ZAIR", 12, isvol, inofld, nofieldm, tmaxfd, stemax, deemax, epsil, stmin);
1043 AliMedium(11,"ZVOIM", 11, isvol, ifield, fieldm, tmaxfd, stemax, deemax, epsil, stmin);
1044 AliMedium(13,"ZIRONE",13, isvol, ifield, fieldm, tmaxfd, stemax, deemax, epsil, stmin);
1047 //_____________________________________________________________________________
1048 void AliZDCv2::AddAlignableVolumes() const
1051 // Create entries for alignable volumes associating the symbolic volume
1052 // name with the corresponding volume path. Needs to be syncronized with
1053 // eventual changes in the geometry.
1055 TString volpath1 = "ALIC_1/ZDC_1/ZNEU_1";
1056 TString volpath2 = "ALIC_1/ZDC_1/ZPRO_1";
1058 TString symname1="ZDC/NeutronZDC";
1059 TString symname2="ZDC/ProtonZDC";
1061 if(!gGeoManager->SetAlignableEntry(symname1.Data(),volpath1.Data()))
1062 AliFatal(Form("Alignable entry %s not created. Volume path %s not valid", symname1.Data(),volpath1.Data()));
1064 if(!gGeoManager->SetAlignableEntry(symname2.Data(),volpath2.Data()))
1065 AliFatal(Form("Alignable entry %s not created. Volume path %s not valid", symname2.Data(),volpath2.Data()));
1068 //_____________________________________________________________________________
1069 void AliZDCv2::Init()
1072 Int_t *idtmed = fIdtmed->GetArray();
1074 // Thresholds for showering in the ZDCs
1076 gMC->Gstpar(idtmed[i], "CUTGAM", .001);
1077 gMC->Gstpar(idtmed[i], "CUTELE", .001);
1078 gMC->Gstpar(idtmed[i], "CUTNEU", .01);
1079 gMC->Gstpar(idtmed[i], "CUTHAD", .01);
1081 gMC->Gstpar(idtmed[i], "CUTGAM", .001);
1082 gMC->Gstpar(idtmed[i], "CUTELE", .001);
1083 gMC->Gstpar(idtmed[i], "CUTNEU", .01);
1084 gMC->Gstpar(idtmed[i], "CUTHAD", .01);
1086 gMC->Gstpar(idtmed[i], "CUTGAM", .001);
1087 gMC->Gstpar(idtmed[i], "CUTELE", .001);
1088 gMC->Gstpar(idtmed[i], "CUTNEU", .01);
1089 gMC->Gstpar(idtmed[i], "CUTHAD", .01);
1091 // Avoid too detailed showering in TDI
1093 gMC->Gstpar(idtmed[i], "CUTGAM", .1);
1094 gMC->Gstpar(idtmed[i], "CUTELE", .1);
1095 gMC->Gstpar(idtmed[i], "CUTNEU", 1.);
1096 gMC->Gstpar(idtmed[i], "CUTHAD", 1.);
1098 // Avoid too detailed showering along the beam line
1099 i = 7; //iron with energy loss (ZIRON)
1100 gMC->Gstpar(idtmed[i], "CUTGAM", .1);
1101 gMC->Gstpar(idtmed[i], "CUTELE", .1);
1102 gMC->Gstpar(idtmed[i], "CUTNEU", 1.);
1103 gMC->Gstpar(idtmed[i], "CUTHAD", 1.);
1105 // Avoid too detailed showering along the beam line
1106 i = 8; //iron with energy loss (ZIRONN)
1107 gMC->Gstpar(idtmed[i], "CUTGAM", .1);
1108 gMC->Gstpar(idtmed[i], "CUTELE", .1);
1109 gMC->Gstpar(idtmed[i], "CUTNEU", 1.);
1110 gMC->Gstpar(idtmed[i], "CUTHAD", 1.);
1111 // Avoid too detailed showering along the beam line
1112 i = 13; //iron with energy loss (ZIRONN)
1113 gMC->Gstpar(idtmed[i], "CUTGAM", 1.);
1114 gMC->Gstpar(idtmed[i], "CUTELE", 1.);
1115 gMC->Gstpar(idtmed[i], "CUTNEU", 1.);
1116 gMC->Gstpar(idtmed[i], "CUTHAD", 1.);
1118 // Avoid interaction in fibers (only energy loss allowed)
1119 i = 3; //fibers (ZSI02)
1120 gMC->Gstpar(idtmed[i], "DCAY", 0.);
1121 gMC->Gstpar(idtmed[i], "MULS", 0.);
1122 gMC->Gstpar(idtmed[i], "PFIS", 0.);
1123 gMC->Gstpar(idtmed[i], "MUNU", 0.);
1124 gMC->Gstpar(idtmed[i], "LOSS", 1.);
1125 gMC->Gstpar(idtmed[i], "PHOT", 0.);
1126 gMC->Gstpar(idtmed[i], "COMP", 0.);
1127 gMC->Gstpar(idtmed[i], "PAIR", 0.);
1128 gMC->Gstpar(idtmed[i], "BREM", 0.);
1129 gMC->Gstpar(idtmed[i], "DRAY", 0.);
1130 gMC->Gstpar(idtmed[i], "ANNI", 0.);
1131 gMC->Gstpar(idtmed[i], "HADR", 0.);
1132 i = 4; //fibers (ZQUAR)
1133 gMC->Gstpar(idtmed[i], "DCAY", 0.);
1134 gMC->Gstpar(idtmed[i], "MULS", 0.);
1135 gMC->Gstpar(idtmed[i], "PFIS", 0.);
1136 gMC->Gstpar(idtmed[i], "MUNU", 0.);
1137 gMC->Gstpar(idtmed[i], "LOSS", 1.);
1138 gMC->Gstpar(idtmed[i], "PHOT", 0.);
1139 gMC->Gstpar(idtmed[i], "COMP", 0.);
1140 gMC->Gstpar(idtmed[i], "PAIR", 0.);
1141 gMC->Gstpar(idtmed[i], "BREM", 0.);
1142 gMC->Gstpar(idtmed[i], "DRAY", 0.);
1143 gMC->Gstpar(idtmed[i], "ANNI", 0.);
1144 gMC->Gstpar(idtmed[i], "HADR", 0.);
1146 // Avoid interaction in void
1147 i = 11; //void with field
1148 gMC->Gstpar(idtmed[i], "DCAY", 0.);
1149 gMC->Gstpar(idtmed[i], "MULS", 0.);
1150 gMC->Gstpar(idtmed[i], "PFIS", 0.);
1151 gMC->Gstpar(idtmed[i], "MUNU", 0.);
1152 gMC->Gstpar(idtmed[i], "LOSS", 0.);
1153 gMC->Gstpar(idtmed[i], "PHOT", 0.);
1154 gMC->Gstpar(idtmed[i], "COMP", 0.);
1155 gMC->Gstpar(idtmed[i], "PAIR", 0.);
1156 gMC->Gstpar(idtmed[i], "BREM", 0.);
1157 gMC->Gstpar(idtmed[i], "DRAY", 0.);
1158 gMC->Gstpar(idtmed[i], "ANNI", 0.);
1159 gMC->Gstpar(idtmed[i], "HADR", 0.);
1162 fMedSensZN = idtmed[1]; // Sensitive volume: ZN passive material
1163 fMedSensZP = idtmed[2]; // Sensitive volume: ZP passive material
1164 fMedSensF1 = idtmed[3]; // Sensitive volume: fibres type 1
1165 fMedSensF2 = idtmed[4]; // Sensitive volume: fibres type 2
1166 fMedSensZEM = idtmed[5]; // Sensitive volume: ZEM passive material
1167 fMedSensTDI = idtmed[6]; // Sensitive volume: TDI Cu shield
1168 fMedSensPI = idtmed[7]; // Sensitive volume: beam pipes
1169 fMedSensGR = idtmed[12]; // Sensitive volume: air into the grooves
1172 //_____________________________________________________________________________
1173 void AliZDCv2::InitTables()
1176 // Read light tables for Cerenkov light production parameterization
1181 char *lightfName1,*lightfName2,*lightfName3,*lightfName4,
1182 *lightfName5,*lightfName6,*lightfName7,*lightfName8;
1183 FILE *fp1, *fp2, *fp3, *fp4, *fp5, *fp6, *fp7, *fp8;
1185 // --- Reading light tables for ZN
1186 lightfName1 = gSystem->ExpandPathName("$ALICE_ROOT/ZDC/light22620362207s");
1187 if((fp1 = fopen(lightfName1,"r")) == NULL){
1188 printf("Cannot open file fp1 \n");
1191 lightfName2 = gSystem->ExpandPathName("$ALICE_ROOT/ZDC/light22620362208s");
1192 if((fp2 = fopen(lightfName2,"r")) == NULL){
1193 printf("Cannot open file fp2 \n");
1196 lightfName3 = gSystem->ExpandPathName("$ALICE_ROOT/ZDC/light22620362209s");
1197 if((fp3 = fopen(lightfName3,"r")) == NULL){
1198 printf("Cannot open file fp3 \n");
1201 lightfName4 = gSystem->ExpandPathName("$ALICE_ROOT/ZDC/light22620362210s");
1202 if((fp4 = fopen(lightfName4,"r")) == NULL){
1203 printf("Cannot open file fp4 \n");
1207 for(k=0; k<fNalfan; k++){
1208 for(j=0; j<fNben; j++){
1209 fscanf(fp1,"%f",&fTablen[0][k][j]);
1210 fscanf(fp2,"%f",&fTablen[1][k][j]);
1211 fscanf(fp3,"%f",&fTablen[2][k][j]);
1212 fscanf(fp4,"%f",&fTablen[3][k][j]);
1220 // --- Reading light tables for ZP and ZEM
1221 lightfName5 = gSystem->ExpandPathName("$ALICE_ROOT/ZDC/light22620552207s");
1222 if((fp5 = fopen(lightfName5,"r")) == NULL){
1223 printf("Cannot open file fp5 \n");
1226 lightfName6 = gSystem->ExpandPathName("$ALICE_ROOT/ZDC/light22620552208s");
1227 if((fp6 = fopen(lightfName6,"r")) == NULL){
1228 printf("Cannot open file fp6 \n");
1231 lightfName7 = gSystem->ExpandPathName("$ALICE_ROOT/ZDC/light22620552209s");
1232 if((fp7 = fopen(lightfName7,"r")) == NULL){
1233 printf("Cannot open file fp7 \n");
1236 lightfName8 = gSystem->ExpandPathName("$ALICE_ROOT/ZDC/light22620552210s");
1237 if((fp8 = fopen(lightfName8,"r")) == NULL){
1238 printf("Cannot open file fp8 \n");
1242 for(k=0; k<fNalfap; k++){
1243 for(j=0; j<fNbep; j++){
1244 fscanf(fp5,"%f",&fTablep[0][k][j]);
1245 fscanf(fp6,"%f",&fTablep[1][k][j]);
1246 fscanf(fp7,"%f",&fTablep[2][k][j]);
1247 fscanf(fp8,"%f",&fTablep[3][k][j]);
1255 //_____________________________________________________________________________
1256 void AliZDCv2::StepManager()
1259 // Routine called at every step in the Zero Degree Calorimeters
1262 Int_t j, vol[2], ibeta=0, ialfa, ibe, nphe;
1263 Float_t x[3], xdet[3], destep, hits[10], m, ekin, um[3], ud[3], be, out;
1265 Float_t xalic[3], z, guiEff, guiPar[4]={0.31,-0.0004,0.0197,0.7958};
1266 Double_t s[3], p[4];
1269 for (j=0;j<10;j++) hits[j]=-999.;
1271 // --- This part is for no shower developement in beam pipe and TDI
1272 // If particle interacts with beam pipe or TDI -> return
1273 if((gMC->CurrentMedium() == fMedSensPI) || (gMC->CurrentMedium() == fMedSensTDI)){
1274 // If option NoShower is set -> StopTrack
1276 if(gMC->CurrentMedium() == fMedSensPI) {
1277 knamed = gMC->CurrentVolName();
1278 if(!strncmp(knamed,"YMQ",3)) fpLostIT += 1;
1279 if(!strncmp(knamed,"YD1",3)) fpLostD1 += 1;
1281 else if(gMC->CurrentMedium() == fMedSensTDI){ // NB->Cu = TDI or D1 vacuum chamber
1282 knamed = gMC->CurrentVolName();
1283 if(!strncmp(knamed,"MD1",3)) fpLostD1 += 1;
1284 if(!strncmp(knamed,"QTD",3)) fpLostTDI += 1;
1286 printf("\n # of spectators lost in IT = %d\n",fpLostIT);
1287 printf("\n # of spectators lost in D1 = %d\n",fpLostD1);
1288 printf("\n # of spectators lost in TDI = %d\n\n",fpLostTDI);
1294 if((gMC->CurrentMedium() == fMedSensZN) || (gMC->CurrentMedium() == fMedSensZP) ||
1295 (gMC->CurrentMedium() == fMedSensGR) || (gMC->CurrentMedium() == fMedSensF1) ||
1296 (gMC->CurrentMedium() == fMedSensF2) || (gMC->CurrentMedium() == fMedSensZEM)){
1299 //Particle coordinates
1300 gMC->TrackPosition(s[0],s[1],s[2]);
1301 for(j=0; j<=2; j++) x[j] = s[j];
1306 // Determine in which ZDC the particle is
1307 knamed = gMC->CurrentVolName();
1308 if(!strncmp(knamed,"ZN",2)) vol[0]=1;
1309 else if(!strncmp(knamed,"ZP",2)) vol[0]=2;
1310 else if(!strncmp(knamed,"ZE",2)) vol[0]=3;
1312 // Determine in which quadrant the particle is
1313 if(vol[0]==1){ //Quadrant in ZN
1314 // Calculating particle coordinates inside ZN
1315 xdet[0] = x[0]-fPosZN[0];
1316 xdet[1] = x[1]-fPosZN[1];
1317 // Calculating quadrant in ZN
1319 if(xdet[1]>=0.) vol[1]=1;
1320 else if(xdet[1]<0.) vol[1]=3;
1322 else if(xdet[0]>0.){
1323 if(xdet[1]>=0.) vol[1]=2;
1324 else if(xdet[1]<0.) vol[1]=4;
1326 if((vol[1]!=1) && (vol[1]!=2) && (vol[1]!=3) && (vol[1]!=4))
1327 printf("\n ZDC StepManager->ERROR in ZN!!! vol[1] = %d, xdet[0] = %f,"
1328 "xdet[1] = %f\n",vol[1], xdet[0], xdet[1]);
1331 else if(vol[0]==2){ //Quadrant in ZP
1332 // Calculating particle coordinates inside ZP
1333 xdet[0] = x[0]-fPosZP[0];
1334 xdet[1] = x[1]-fPosZP[1];
1335 if(xdet[0]>=fDimZP[0]) xdet[0]=fDimZP[0]-0.01;
1336 if(xdet[0]<=-fDimZP[0]) xdet[0]=-fDimZP[0]+0.01;
1337 // Calculating tower in ZP
1338 Float_t xqZP = xdet[0]/(fDimZP[0]/2.);
1339 for(int i=1; i<=4; i++){
1340 if(xqZP>=(i-3) && xqZP<(i-2)){
1345 if((vol[1]!=1) && (vol[1]!=2) && (vol[1]!=3) && (vol[1]!=4))
1346 printf(" ZDC StepManager->ERROR in ZP!!! vol[1] = %d, xdet[0] = %f,"
1347 "xdet[1] = %f\n",vol[1], xdet[0], xdet[1]);
1350 // Quadrant in ZEM: vol[1] = 1 -> particle in 1st ZEM (placed at x = 8.5 cm)
1351 // vol[1] = 2 -> particle in 2nd ZEM (placed at x = -8.5 cm)
1352 else if(vol[0] == 3){
1355 // Particle x-coordinate inside ZEM1
1356 xdet[0] = x[0]-fPosZEM[0];
1360 // Particle x-coordinate inside ZEM2
1361 xdet[0] = x[0]+fPosZEM[0];
1363 xdet[1] = x[1]-fPosZEM[1];
1366 // Store impact point and kinetic energy of the ENTERING particle
1368 if(gMC->IsTrackEntering()){
1370 gMC->TrackMomentum(p[0],p[1],p[2],p[3]);
1372 // Impact point on ZDC
1380 AddHit(gAlice->GetMCApp()->GetCurrentTrackNumber(), vol, hits);
1383 if(vol[0]==1) fnDetected += 1;
1384 else if(vol[0]==2) fpDetected += 1;
1385 printf("\n # of nucleons in ZN = %d",fnDetected);
1386 printf("\n # of nucleons in ZP = %d\n\n",fpDetected);
1392 // Charged particles -> Energy loss
1393 if((destep=gMC->Edep())){
1394 if(gMC->IsTrackStop()){
1395 gMC->TrackMomentum(p[0],p[1],p[2],p[3]);
1396 m = gMC->TrackMass();
1401 AddHit(gAlice->GetMCApp()->GetCurrentTrackNumber(), vol, hits);
1407 AddHit(gAlice->GetMCApp()->GetCurrentTrackNumber(), vol, hits);
1413 // *** Light production in fibres
1414 if((gMC->CurrentMedium() == fMedSensF1) || (gMC->CurrentMedium() == fMedSensF2)){
1416 //Select charged particles
1417 if((destep=gMC->Edep())){
1419 // Particle velocity
1421 gMC->TrackMomentum(p[0],p[1],p[2],p[3]);
1422 Float_t ptot=TMath::Sqrt(p[0]*p[0]+p[1]*p[1]+p[2]*p[2]);
1423 if(p[3] > 0.00001) beta = ptot/p[3];
1425 if(beta<0.67)return;
1426 else if((beta>=0.67) && (beta<=0.75)) ibeta = 0;
1427 else if((beta>0.75) && (beta<=0.85)) ibeta = 1;
1428 else if((beta>0.85) && (beta<=0.95)) ibeta = 2;
1429 else if(beta>0.95) ibeta = 3;
1431 // Angle between particle trajectory and fibre axis
1432 // 1 -> Momentum directions
1436 gMC->Gmtod(um,ud,2);
1437 // 2 -> Angle < limit angle
1438 Double_t alfar = TMath::ACos(ud[2]);
1439 Double_t alfa = alfar*kRaddeg;
1440 if(alfa>=110.) return;
1442 ialfa = Int_t(1.+alfa/2.);
1444 // Distance between particle trajectory and fibre axis
1445 gMC->TrackPosition(s[0],s[1],s[2]);
1446 for(j=0; j<=2; j++){
1449 gMC->Gmtod(x,xdet,1);
1450 if(TMath::Abs(ud[0])>0.00001){
1451 Float_t dcoeff = ud[1]/ud[0];
1452 be = TMath::Abs((xdet[1]-dcoeff*xdet[0])/TMath::Sqrt(dcoeff*dcoeff+1.));
1455 be = TMath::Abs(ud[0]);
1458 ibe = Int_t(be*1000.+1);
1459 //if((vol[0]==1)) radius = fFibZN[1];
1460 //else if((vol[0]==2)) radius = fFibZP[1];
1462 //Looking into the light tables
1463 Float_t charge = gMC->TrackCharge();
1465 if((vol[0]==1)) { // (1) ZN fibres
1466 if(ibe>fNben) ibe=fNben;
1467 out = charge*charge*fTablen[ibeta][ialfa][ibe];
1468 nphe = gRandom->Poisson(out);
1470 //if(ibeta==3) printf("\t %f \t %f \t %f\n",alfa, be, out);
1471 //printf("\t ibeta = %d, ialfa = %d, ibe = %d -> nphe = %d\n\n",ibeta,ialfa,ibe,nphe);
1472 if(gMC->CurrentMedium() == fMedSensF1){
1473 hits[7] = nphe; //fLightPMQ
1476 AddHit(gAlice->GetMCApp()->GetCurrentTrackNumber(), vol, hits);
1480 hits[8] = nphe; //fLightPMC
1482 AddHit(gAlice->GetMCApp()->GetCurrentTrackNumber(), vol, hits);
1485 else if((vol[0]==2)) { // (2) ZP fibres
1486 if(ibe>fNbep) ibe=fNbep;
1487 out = charge*charge*fTablep[ibeta][ialfa][ibe];
1488 nphe = gRandom->Poisson(out);
1489 if(gMC->CurrentMedium() == fMedSensF1){
1490 hits[7] = nphe; //fLightPMQ
1493 AddHit(gAlice->GetMCApp()->GetCurrentTrackNumber(), vol, hits);
1497 hits[8] = nphe; //fLightPMC
1499 AddHit(gAlice->GetMCApp()->GetCurrentTrackNumber(), vol, hits);
1502 else if((vol[0]==3)) { // (3) ZEM fibres
1503 if(ibe>fNbep) ibe=fNbep;
1504 out = charge*charge*fTablep[ibeta][ialfa][ibe];
1505 gMC->TrackPosition(s[0],s[1],s[2]);
1506 for(j=0; j<=2; j++){
1509 // z-coordinate from ZEM front face
1510 // NB-> fPosZEM[2]+fZEMLength = -1000.+2*10.3 = 979.69 cm
1511 z = -xalic[2]+fPosZEM[2]+2*fZEMLength-xalic[1];
1512 // z = xalic[2]-fPosZEM[2]-fZEMLength-xalic[1]*(TMath::Tan(45.*kDegrad));
1513 // printf("\n fPosZEM[2]+2*fZEMLength = %f", fPosZEM[2]+2*fZEMLength);
1514 guiEff = guiPar[0]*(guiPar[1]*z*z+guiPar[2]*z+guiPar[3]);
1516 nphe = gRandom->Poisson(out);
1517 // printf(" out*guiEff = %f nphe = %d", out, nphe);
1520 hits[8] = nphe; //fLightPMC (ZEM1)
1522 AddHit(gAlice->GetMCApp()->GetCurrentTrackNumber(), vol, hits);
1525 hits[7] = nphe; //fLightPMQ (ZEM2)
1528 AddHit(gAlice->GetMCApp()->GetCurrentTrackNumber(), vol, hits);