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
37 #include <TVirtualMC.h>
38 #include <TGeoManager.h>
40 // --- AliRoot classes
53 //_____________________________________________________________________________
54 AliZDCv2::AliZDCv2() :
76 // Default constructor for Zero Degree Calorimeter
81 //_____________________________________________________________________________
82 AliZDCv2::AliZDCv2(const char *name, const char *title)
106 // Standard constructor for Zero Degree Calorimeter
109 // Check that DIPO, ABSO, DIPO and SHIL is there (otherwise tracking is wrong!!!)
111 AliModule* pipe=gAlice->GetModule("PIPE");
112 AliModule* abso=gAlice->GetModule("ABSO");
113 AliModule* dipo=gAlice->GetModule("DIPO");
114 AliModule* shil=gAlice->GetModule("SHIL");
115 if((!pipe) || (!abso) || (!dipo) || (!shil)) {
116 Error("Constructor","ZDC needs PIPE, ABSO, DIPO and SHIL!!!\n");
130 // Parameters for light tables
131 fNalfan = 90; // Number of Alfa (neutrons)
132 fNalfap = 90; // Number of Alfa (protons)
133 fNben = 18; // Number of beta (neutrons)
134 fNbep = 28; // Number of beta (protons)
136 for(ip=0; ip<4; ip++){
137 for(kp=0; kp<fNalfap; kp++){
138 for(jp=0; jp<fNbep; jp++){
139 fTablep[ip][kp][jp] = 0;
144 for(in=0; in<4; in++){
145 for(kn=0; kn<fNalfan; kn++){
146 for(jn=0; jn<fNben; jn++){
147 fTablen[in][kn][jn] = 0;
152 // Parameters for hadronic calorimeters geometry
172 // Parameters for EM calorimeter geometry
177 Float_t kDimZEMPb = 0.15*(TMath::Sqrt(2.)); // z-dimension of the Pb slice
178 Float_t kDimZEMAir = 0.001; // scotch
179 Float_t kFibRadZEM = 0.0315; // External fiber radius (including cladding)
180 Int_t kDivZEM[3] = {92, 0, 20}; // Divisions for EM detector
181 Float_t kDimZEM0 = 2*kDivZEM[2]*(kDimZEMPb+kDimZEMAir+kFibRadZEM*(TMath::Sqrt(2.)));
182 fZEMLength = kDimZEM0;
186 //_____________________________________________________________________________
187 void AliZDCv2::CreateGeometry()
190 // Create the geometry for the Zero Degree Calorimeter version 2
191 //* Initialize COMMON block ZDC_CGEOM
198 //_____________________________________________________________________________
199 void AliZDCv2::CreateBeamLine()
202 // Create the beam line elements
205 Float_t zc, zq, zd1, zd2;
206 Float_t conpar[9], tubpar[3], tubspar[5], boxpar[3];
209 Int_t *idtmed = fIdtmed->GetArray();
211 // -- Mother of the ZDCs (Vacuum PCON)
212 // zd1 = 2092.; // (Without compensator in ZDC geometry)
224 gMC->Gsvolu("ZDC ", "PCON", idtmed[11], conpar, 9);
225 gMC->Gspos("ZDC ", 1, "ALIC", 0., 0., 0., 0, "ONLY");
227 // -- FIRST SECTION OF THE BEAM PIPE (from compensator dipole to
228 // the beginning of D1)
231 // From beginning of ZDC volumes to beginning of D1
232 tubpar[2] = (5838.3-zd1)/2.;
233 gMC->Gsvolu("QT01", "TUBE", idtmed[7], tubpar, 3);
234 gMC->Gspos("QT01", 1, "ZDC ", 0., 0., -tubpar[2]-zd1, 0, "ONLY");
236 //printf("\n QT01 TUBE pipe from z = %f to z= %f (D1 beg.)\n",-zd1,-2*tubpar[2]-zd1);
238 //-- SECOND SECTION OF THE BEAM PIPE (from the end of D1 to the
241 //-- FROM MAGNETIC BEGINNING OF D1 TO MAGNETIC END OF D1 + 13.5 cm
242 //-- Cylindrical pipe (r = 3.47) + conical flare
244 // -> Beginning of D1
248 tubpar[1] = 3.47+0.2;
249 tubpar[2] = 958.5/2.;
250 gMC->Gsvolu("QT02", "TUBE", idtmed[7], tubpar, 3);
251 gMC->Gspos("QT02", 1, "ZDC ", 0., 0., -tubpar[2]-zd1, 0, "ONLY");
253 //printf("\n QT02 TUBE pipe from z = %f to z= %f\n",-zd1,-2*tubpar[2]-zd1);
262 gMC->Gsvolu("QC01", "CONE", idtmed[7], conpar, 5);
263 gMC->Gspos("QC01", 1, "ZDC ", 0., 0., -conpar[0]-zd1, 0, "ONLY");
265 //printf("\n QC01 CONE pipe from z = %f to z= %f\n",-zd1,-2*conpar[0]-zd1);
272 gMC->Gsvolu("QT03", "TUBE", idtmed[7], tubpar, 3);
273 gMC->Gspos("QT03", 1, "ZDC ", 0., 0., -tubpar[2]-zd1, 0, "ONLY");
275 //printf("\n QT03 TUBE pipe from z = %f to z= %f\n",-zd1,-2*tubpar[2]-zd1);
282 gMC->Gsvolu("QT04", "TUBE", idtmed[7], tubpar, 3);
283 gMC->Gspos("QT04", 1, "ZDC ", 0., 0., -tubpar[2]-zd1, 0, "ONLY");
285 //printf("\n QT04 TUBE pipe from z = %f to z= %f\n",-zd1,-2*tubpar[2]-zd1);
287 zd1 += tubpar[2] * 2.;
292 gMC->Gsvolu("QT05", "TUBE", idtmed[7], tubpar, 3);
293 gMC->Gspos("QT05", 1, "ZDC ", 0., 0., -tubpar[0]-zd1, 0, "ONLY");
295 //printf("\n QT05 TUBE pipe from z = %f to z= %f\n",-zd1,-2*tubpar[2]-zd1);
297 zd1 += tubpar[2] * 2.;
302 gMC->Gsvolu("QT06", "TUBE", idtmed[7], tubpar, 3);
303 gMC->Gspos("QT06", 1, "ZDC ", 0., 0., -tubpar[2]-zd1, 0, "ONLY");
305 //printf("\n QT06 TUBE pipe from z = %f to z= %f\n",-zd1,-2*tubpar[2]-zd1);
307 zd1 += tubpar[2] * 2.;
314 gMC->Gsvolu("QC02", "CONE", idtmed[7], conpar, 5);
315 gMC->Gspos("QC02", 1, "ZDC ", 0., 0., -conpar[0]-zd1, 0, "ONLY");
317 //printf("\n QC02 CONE pipe from z = %f to z= %f\n",-zd1,-2*conpar[0]-zd1);
319 zd1 += conpar[0] * 2.;
324 gMC->Gsvolu("QT07", "TUBE", idtmed[7], tubpar, 3);
325 gMC->Gspos("QT07", 1, "ZDC ", 0., 0., -tubpar[2]-zd1, 0, "ONLY");
327 //printf("\n QT07 TUBE pipe from z = %f to z= %f\n",-zd1,-2*tubpar[2]-zd1);
329 zd1 += tubpar[2] * 2.;
336 gMC->Gsvolu("QC03", "CONE", idtmed[7], conpar, 5);
337 gMC->Gspos("QC03", 1, "ZDC ", 0., 0., -conpar[0]-zd1, 0, "ONLY");
339 //printf("\n QC03 CONE pipe from z = %f to z= %f\n",-zd1,-2*conpar[0]-zd1);
341 zd1 += conpar[0] * 2.;
345 tubpar[2] = 205.8/2.;
346 gMC->Gsvolu("QT08", "TUBE", idtmed[7], tubpar, 3);
347 gMC->Gspos("QT08", 1, "ZDC ", 0., 0., -tubpar[2]-zd1, 0, "ONLY");
349 //printf("\n QT08 TUBE pipe from z = %f to z= %f\n",-zd1,-2*tubpar[2]-zd1);
351 zd1 += tubpar[2] * 2.;
355 // QT09 is 10 cm longer to accomodate TDI
356 tubpar[2] = 515.4/2.;
357 gMC->Gsvolu("QT09", "TUBE", idtmed[7], tubpar, 3);
358 gMC->Gspos("QT09", 1, "ZDC ", 0., 0., -tubpar[2]-zd1, 0, "ONLY");
360 //printf("\n QT09 TUBE pipe from z = %f to z= %f\n",-zd1,-2*tubpar[2]-zd1);
362 // --- Insert TDI (inside ZDC volume)
366 gMC->Gsvolu("QTD1", "BOX ", idtmed[7], boxpar, 3);
367 gMC->Gspos("QTD1", 1, "ZDC ", -3., 10.6, -tubpar[2]-zd1-56.3, 0, "ONLY");
368 gMC->Gspos("QTD1", 2, "ZDC ", -3., -10.6, -tubpar[2]-zd1-56.3, 0, "ONLY");
373 gMC->Gsvolu("QTD2", "BOX ", idtmed[6], boxpar, 3);
374 gMC->Gspos("QTD2", 1, "ZDC ", -8.6-boxpar[0], 0., -tubpar[2]-zd1-56.3, 0, "ONLY");
376 tubspar[0] = 10.5; // R = 10.5 cm------------------------------------------
378 tubspar[2] = 400./2.;
379 tubspar[3] = 360.-75.5;
381 gMC->Gsvolu("QTD3", "TUBS", idtmed[6], tubspar, 5);
382 gMC->Gspos("QTD3", 1, "ZDC ", 0., 0., -tubpar[2]-zd1-56.3, 0, "ONLY");
384 //printf("\n TDI volume from z = %f to z= %f\n",-tubpar[2]-zd1-56.3,-tubpar[2]-zd1-56.3-400.);
386 zd1 += tubpar[2] * 2.;
390 // QT10 is 10 cm shorter
392 gMC->Gsvolu("QT10", "TUBE", idtmed[7], tubpar, 3);
393 gMC->Gspos("QT10", 1, "ZDC ", 0., 0., -tubpar[2]-zd1, 0, "ONLY");
395 //printf("\n QT10 TUBE pipe from z = %f to z= %f\n",-zd1,-2*tubpar[2]-zd1);
397 zd1 += tubpar[2] * 2.;
401 tubpar[2] = 778.5/2.;
402 gMC->Gsvolu("QT11", "TUBE", idtmed[7], tubpar, 3);
403 gMC->Gspos("QT11", 1, "ZDC ", 0., 0., -tubpar[2]-zd1, 0, "ONLY");
405 //printf("\n QT11 TUBE pipe from z = %f to z= %f\n",-zd1,-2*tubpar[2]-zd1);
407 zd1 += tubpar[2] * 2.;
409 conpar[0] = 14.18/2.;
414 gMC->Gsvolu("QC04", "CONE", idtmed[7], conpar, 5);
415 gMC->Gspos("QC04", 1, "ZDC ", 0., 0., -conpar[0]-zd1, 0, "ONLY");
417 //printf("\n QC04 CONE pipe from z = %f to z= %f\n",-zd1,-2*conpar[0]-zd1);
419 zd1 += conpar[0] * 2.;
424 gMC->Gsvolu("QT12", "TUBE", idtmed[7], tubpar, 3);
425 gMC->Gspos("QT12", 1, "ZDC ", 0., 0., -tubpar[2]-zd1, 0, "ONLY");
427 //printf("\n QT12 TUBE pipe from z = %f to z= %f\n",-zd1,-2*tubpar[2]-zd1);
429 zd1 += tubpar[2] * 2.;
431 conpar[0] = 36.86/2.;
436 gMC->Gsvolu("QC05", "CONE", idtmed[7], conpar, 5);
437 gMC->Gspos("QC05", 1, "ZDC ", 0., 0., -conpar[0]-zd1, 0, "ONLY");
439 //printf("\n QC05 CONE pipe from z = %f to z= %f\n",-zd1,-2*conpar[0]-zd1);
441 zd1 += conpar[0] * 2.;
445 tubpar[2] = 927.3/2.;
446 gMC->Gsvolu("QT13", "TUBE", idtmed[7], tubpar, 3);
447 gMC->Gspos("QT13", 1, "ZDC ", 0., 0., -tubpar[2]-zd1, 0, "ONLY");
449 //printf("\n QT13 TUBE pipe from z = %f to z= %f\n",-zd1,-2*tubpar[2]-zd1);
451 zd1 += tubpar[2] * 2.;
456 gMC->Gsvolu("QT14", "TUBE", idtmed[8], tubpar, 3);
457 gMC->Gspos("QT14", 1, "ZDC ", 0., 0., -tubpar[2]-zd1, 0, "ONLY");
459 //printf("\n QT14 TUBE pipe from z = %f to z= %f\n",-zd1,-2*tubpar[2]-zd1);
461 zd1 += tubpar[2] * 2.;
466 gMC->Gsvolu("QT15", "TUBE", idtmed[11], tubpar, 3);
467 //-- Position QT15 inside QT14
468 gMC->Gspos("QT15", 1, "QT14", -7.7, 0., 0., 0, "ONLY");
470 gMC->Gsvolu("QT16", "TUBE", idtmed[11], tubpar, 3);
471 //-- Position QT16 inside QT14
472 gMC->Gspos("QT16", 1, "QT14", 7.7, 0., 0., 0, "ONLY");
475 //-- BEAM PIPE BETWEEN END OF CONICAL PIPE AND BEGINNING OF D2
479 tubpar[2] = 680.8/2.;
480 gMC->Gsvolu("QT17", "TUBE", idtmed[7], tubpar, 3);
484 tubpar[2] = 680.8/2.;
485 gMC->Gsvolu("QT18", "TUBE", idtmed[7], tubpar, 3);
488 Float_t angle = 0.143*kDegrad; // Rotation angle
490 //AliMatrix(im1, 90.+0.143, 0., 90., 90., 0.143, 0.); // x<0
491 gMC->Matrix(im1, 90.+0.143, 0., 90., 90., 0.143, 0.); // x<0
492 gMC->Gspos("QT17", 1, "ZDC ", TMath::Sin(angle) * 680.8/ 2. - 9.4,
493 0., -tubpar[2]-zd1, im1, "ONLY");
495 //AliMatrix(im2, 90.-0.143, 0., 90., 90., 0.143, 180.); // x>0 (ZP)
496 gMC->Matrix(im2, 90.-0.143, 0., 90., 90., 0.143, 180.); // x>0 (ZP)
497 gMC->Gspos("QT18", 1, "ZDC ", 9.7 - TMath::Sin(angle) * 680.8 / 2.,
498 0., -tubpar[2]-zd1, im2, "ONLY");
500 // -- END OF BEAM PIPE VOLUME DEFINITION.
501 // ----------------------------------------------------------------
503 // ----------------------------------------------------------------
504 // -- MAGNET DEFINITION -> LHC OPTICS 6.5
505 // ----------------------------------------------------------------
506 // -- COMPENSATOR DIPOLE (MBXW)
509 // -- GAP (VACUUM WITH MAGNETIC FIELD)
513 gMC->Gsvolu("MBXW", "TUBE", idtmed[11], tubpar, 3);
519 gMC->Gsvolu("YMBX", "TUBE", idtmed[13], tubpar, 3);
521 gMC->Gspos("MBXW", 1, "ZDC ", 0., 0., -tubpar[2]-zc, 0, "ONLY");
522 gMC->Gspos("YMBX", 1, "ZDC ", 0., 0., -tubpar[2]-zc, 0, "ONLY");
528 // -- DEFINE MQXL AND MQX QUADRUPOLE ELEMENT
530 // -- GAP (VACUUM WITH MAGNETIC FIELD)
534 gMC->Gsvolu("MQXL", "TUBE", idtmed[11], tubpar, 3);
541 gMC->Gsvolu("YMQL", "TUBE", idtmed[7], tubpar, 3);
543 gMC->Gspos("MQXL", 1, "ZDC ", 0., 0., -tubpar[2]-zq, 0, "ONLY");
544 gMC->Gspos("YMQL", 1, "ZDC ", 0., 0., -tubpar[2]-zq, 0, "ONLY");
546 gMC->Gspos("MQXL", 2, "ZDC ", 0., 0., -tubpar[2]-zq-2430., 0, "ONLY");
547 gMC->Gspos("YMQL", 2, "ZDC ", 0., 0., -tubpar[2]-zq-2430., 0, "ONLY");
550 // -- GAP (VACUUM WITH MAGNETIC FIELD)
554 gMC->Gsvolu("MQX ", "TUBE", idtmed[11], tubpar, 3);
560 gMC->Gsvolu("YMQ ", "TUBE", idtmed[7], tubpar, 3);
562 gMC->Gspos("MQX ", 1, "ZDC ", 0., 0., -tubpar[2]-zq-908.5, 0, "ONLY");
563 gMC->Gspos("YMQ ", 1, "ZDC ", 0., 0., -tubpar[2]-zq-908.5, 0, "ONLY");
565 gMC->Gspos("MQX ", 2, "ZDC ", 0., 0., -tubpar[2]-zq-1558.5, 0, "ONLY");
566 gMC->Gspos("YMQ ", 2, "ZDC ", 0., 0., -tubpar[2]-zq-1558.5, 0, "ONLY");
568 // -- SEPARATOR DIPOLE D1
571 // -- GAP (VACUUM WITH MAGNETIC FIELD)
575 gMC->Gsvolu("MD1 ", "TUBE", idtmed[11], tubpar, 3);
577 // -- Insert horizontal Cu plates inside D1
578 // -- (to simulate the vacuum chamber)
579 boxpar[0] = TMath::Sqrt(tubpar[1]*tubpar[1]-(2.98+0.2)*(2.98+0.2)) - 0.05;
582 gMC->Gsvolu("MD1V", "BOX ", idtmed[6], boxpar, 3);
583 gMC->Gspos("MD1V", 1, "MD1 ", 0., 2.98+boxpar[1], 0., 0, "ONLY");
584 gMC->Gspos("MD1V", 2, "MD1 ", 0., -2.98-boxpar[1], 0., 0, "ONLY");
590 gMC->Gsvolu("YD1 ", "TUBE", idtmed[7], tubpar, 3);
592 gMC->Gspos("YD1 ", 1, "ZDC ", 0., 0., -tubpar[2]-zd1, 0, "ONLY");
593 gMC->Gspos("MD1 ", 1, "YD1 ", 0., 0., 0., 0, "ONLY");
596 // --- LHC optics v6.4
599 // -- GAP (VACUUM WITH MAGNETIC FIELD)
603 gMC->Gsvolu("MD2 ", "TUBE", idtmed[11], tubpar, 3);
609 gMC->Gsvolu("YD2 ", "TUBE", idtmed[7], tubpar, 3);
611 gMC->Gspos("YD2 ", 1, "ZDC ", 0., 0., -tubpar[2]-zd2, 0, "ONLY");
613 gMC->Gspos("MD2 ", 1, "YD2 ", -9.4, 0., 0., 0, "ONLY");
614 gMC->Gspos("MD2 ", 2, "YD2 ", 9.4, 0., 0., 0, "ONLY");
616 // -- END OF MAGNET DEFINITION
619 //_____________________________________________________________________________
620 void AliZDCv2::CreateZDC()
623 // Create the various ZDCs (ZN + ZP)
626 Float_t dimPb[6], dimVoid[6];
628 Int_t *idtmed = fIdtmed->GetArray();
630 // Parameters for hadronic calorimeters geometry
631 // NB -> parameters used ONLY in CreateZDC()
632 Float_t fGrvZN[3] = {0.03, 0.03, 50.}; // Grooves for neutron detector
633 Float_t fGrvZP[3] = {0.04, 0.04, 75.}; // Grooves for proton detector
634 Int_t fDivZN[3] = {11, 11, 0}; // Division for neutron detector
635 Int_t fDivZP[3] = {7, 15, 0}; // Division for proton detector
636 Int_t fTowZN[2] = {2, 2}; // Tower for neutron detector
637 Int_t fTowZP[2] = {4, 1}; // Tower for proton detector
639 // Parameters for EM calorimeter geometry
640 // NB -> parameters used ONLY in CreateZDC()
641 Float_t kDimZEMPb = 0.15*(TMath::Sqrt(2.)); // z-dimension of the Pb slice
642 Float_t kFibRadZEM = 0.0315; // External fiber radius (including cladding)
643 Int_t fDivZEM[3] = {92, 0, 20}; // Divisions for EM detector
644 Float_t fDimZEM[6] = {fZEMLength, 3.5, 3.5, 45., 0., 0.}; // Dimensions of EM detector
645 Float_t fFibZEM2 = fDimZEM[2]/TMath::Sin(fDimZEM[3]*kDegrad)-kFibRadZEM;
646 Float_t fFibZEM[3] = {0., 0.0275, fFibZEM2}; // Fibers for EM calorimeter
649 //-- Create calorimeters geometry
651 // -------------------------------------------------------------------------------
652 //--> Neutron calorimeter (ZN)
654 gMC->Gsvolu("ZNEU", "BOX ", idtmed[1], fDimZN, 3); // Passive material
655 gMC->Gsvolu("ZNF1", "TUBE", idtmed[3], fFibZN, 3); // Active material
656 gMC->Gsvolu("ZNF2", "TUBE", idtmed[4], fFibZN, 3);
657 gMC->Gsvolu("ZNF3", "TUBE", idtmed[4], fFibZN, 3);
658 gMC->Gsvolu("ZNF4", "TUBE", idtmed[3], fFibZN, 3);
659 gMC->Gsvolu("ZNG1", "BOX ", idtmed[12], fGrvZN, 3); // Empty grooves
660 gMC->Gsvolu("ZNG2", "BOX ", idtmed[12], fGrvZN, 3);
661 gMC->Gsvolu("ZNG3", "BOX ", idtmed[12], fGrvZN, 3);
662 gMC->Gsvolu("ZNG4", "BOX ", idtmed[12], fGrvZN, 3);
664 // Divide ZNEU in towers (for hits purposes)
666 gMC->Gsdvn("ZNTX", "ZNEU", fTowZN[0], 1); // x-tower
667 gMC->Gsdvn("ZN1 ", "ZNTX", fTowZN[1], 2); // y-tower
669 //-- Divide ZN1 in minitowers
670 // fDivZN[0]= NUMBER OF FIBERS PER TOWER ALONG X-AXIS,
671 // fDivZN[1]= NUMBER OF FIBERS PER TOWER ALONG Y-AXIS
672 // (4 fibres per minitower)
674 gMC->Gsdvn("ZNSL", "ZN1 ", fDivZN[1], 2); // Slices
675 gMC->Gsdvn("ZNST", "ZNSL", fDivZN[0], 1); // Sticks
677 // --- Position the empty grooves in the sticks (4 grooves per stick)
678 Float_t dx = fDimZN[0] / fDivZN[0] / 4.;
679 Float_t dy = fDimZN[1] / fDivZN[1] / 4.;
681 gMC->Gspos("ZNG1", 1, "ZNST", 0.-dx, 0.+dy, 0., 0, "ONLY");
682 gMC->Gspos("ZNG2", 1, "ZNST", 0.+dx, 0.+dy, 0., 0, "ONLY");
683 gMC->Gspos("ZNG3", 1, "ZNST", 0.-dx, 0.-dy, 0., 0, "ONLY");
684 gMC->Gspos("ZNG4", 1, "ZNST", 0.+dx, 0.-dy, 0., 0, "ONLY");
686 // --- Position the fibers in the grooves
687 gMC->Gspos("ZNF1", 1, "ZNG1", 0., 0., 0., 0, "ONLY");
688 gMC->Gspos("ZNF2", 1, "ZNG2", 0., 0., 0., 0, "ONLY");
689 gMC->Gspos("ZNF3", 1, "ZNG3", 0., 0., 0., 0, "ONLY");
690 gMC->Gspos("ZNF4", 1, "ZNG4", 0., 0., 0., 0, "ONLY");
692 // --- Position the neutron calorimeter in ZDC
693 // -- Rotation of ZDCs
695 gMC->Matrix(irotzdc, 90., 180., 90., 90., 180., 0.);
697 gMC->Gspos("ZNEU", 1, "ZDC ", fPosZN[0], fPosZN[1], fPosZN[2]-fDimZN[2], irotzdc, "ONLY");
699 //printf("\n ZN -> %f < z < %f cm\n",fPosZN[2],fPosZN[2]-2*fDimZN[2]);
701 // -------------------------------------------------------------------------------
702 //--> Proton calorimeter (ZP)
704 gMC->Gsvolu("ZPRO", "BOX ", idtmed[2], fDimZP, 3); // Passive material
705 gMC->Gsvolu("ZPF1", "TUBE", idtmed[3], fFibZP, 3); // Active material
706 gMC->Gsvolu("ZPF2", "TUBE", idtmed[4], fFibZP, 3);
707 gMC->Gsvolu("ZPF3", "TUBE", idtmed[4], fFibZP, 3);
708 gMC->Gsvolu("ZPF4", "TUBE", idtmed[3], fFibZP, 3);
709 gMC->Gsvolu("ZPG1", "BOX ", idtmed[12], fGrvZP, 3); // Empty grooves
710 gMC->Gsvolu("ZPG2", "BOX ", idtmed[12], fGrvZP, 3);
711 gMC->Gsvolu("ZPG3", "BOX ", idtmed[12], fGrvZP, 3);
712 gMC->Gsvolu("ZPG4", "BOX ", idtmed[12], fGrvZP, 3);
714 //-- Divide ZPRO in towers(for hits purposes)
716 gMC->Gsdvn("ZPTX", "ZPRO", fTowZP[0], 1); // x-tower
717 gMC->Gsdvn("ZP1 ", "ZPTX", fTowZP[1], 2); // y-tower
720 //-- Divide ZP1 in minitowers
721 // fDivZP[0]= NUMBER OF FIBERS ALONG X-AXIS PER MINITOWER,
722 // fDivZP[1]= NUMBER OF FIBERS ALONG Y-AXIS PER MINITOWER
723 // (4 fiber per minitower)
725 gMC->Gsdvn("ZPSL", "ZP1 ", fDivZP[1], 2); // Slices
726 gMC->Gsdvn("ZPST", "ZPSL", fDivZP[0], 1); // Sticks
728 // --- Position the empty grooves in the sticks (4 grooves per stick)
729 dx = fDimZP[0] / fTowZP[0] / fDivZP[0] / 2.;
730 dy = fDimZP[1] / fTowZP[1] / fDivZP[1] / 2.;
732 gMC->Gspos("ZPG1", 1, "ZPST", 0.-dx, 0.+dy, 0., 0, "ONLY");
733 gMC->Gspos("ZPG2", 1, "ZPST", 0.+dx, 0.+dy, 0., 0, "ONLY");
734 gMC->Gspos("ZPG3", 1, "ZPST", 0.-dx, 0.-dy, 0., 0, "ONLY");
735 gMC->Gspos("ZPG4", 1, "ZPST", 0.+dx, 0.-dy, 0., 0, "ONLY");
737 // --- Position the fibers in the grooves
738 gMC->Gspos("ZPF1", 1, "ZPG1", 0., 0., 0., 0, "ONLY");
739 gMC->Gspos("ZPF2", 1, "ZPG2", 0., 0., 0., 0, "ONLY");
740 gMC->Gspos("ZPF3", 1, "ZPG3", 0., 0., 0., 0, "ONLY");
741 gMC->Gspos("ZPF4", 1, "ZPG4", 0., 0., 0., 0, "ONLY");
744 // --- Position the proton calorimeter in ZDC
745 gMC->Gspos("ZPRO", 1, "ZDC ", fPosZP[0], fPosZP[1], fPosZP[2]-fDimZP[2], irotzdc, "ONLY");
747 //printf("\n ZP -> %f < z < %f cm\n",fPosZP[2],fPosZP[2]-2*fDimZP[2]);
750 // -------------------------------------------------------------------------------
751 // -> EM calorimeter (ZEM)
753 gMC->Gsvolu("ZEM ", "PARA", idtmed[10], fDimZEM, 6);
756 gMC->Matrix(irot1,0.,0.,90.,90.,-90.,0.); // Rotation matrix 1
757 gMC->Matrix(irot2,180.,0.,90.,fDimZEM[3]+90.,90.,fDimZEM[3]);// Rotation matrix 2
758 //printf("irot1 = %d, irot2 = %d \n", irot1, irot2);
760 gMC->Gsvolu("ZEMF", "TUBE", idtmed[3], fFibZEM, 3); // Active material
762 gMC->Gsdvn("ZETR", "ZEM ", fDivZEM[2], 1); // Tranches
764 dimPb[0] = kDimZEMPb; // Lead slices
765 dimPb[1] = fDimZEM[2];
766 dimPb[2] = fDimZEM[1];
767 //dimPb[3] = fDimZEM[3]; //controllare
768 dimPb[3] = 90.-fDimZEM[3]; //originale
771 gMC->Gsvolu("ZEL0", "PARA", idtmed[5], dimPb, 6);
772 gMC->Gsvolu("ZEL1", "PARA", idtmed[5], dimPb, 6);
773 gMC->Gsvolu("ZEL2", "PARA", idtmed[5], dimPb, 6);
775 // --- Position the lead slices in the tranche
776 Float_t zTran = fDimZEM[0]/fDivZEM[2];
777 Float_t zTrPb = -zTran+kDimZEMPb;
778 gMC->Gspos("ZEL0", 1, "ZETR", zTrPb, 0., 0., 0, "ONLY");
779 gMC->Gspos("ZEL1", 1, "ZETR", kDimZEMPb, 0., 0., 0, "ONLY");
781 // --- Vacuum zone (to be filled with fibres)
782 dimVoid[0] = (zTran-2*kDimZEMPb)/2.;
783 dimVoid[1] = fDimZEM[2];
784 dimVoid[2] = fDimZEM[1];
785 dimVoid[3] = 90.-fDimZEM[3];
788 gMC->Gsvolu("ZEV0", "PARA", idtmed[10], dimVoid,6);
789 gMC->Gsvolu("ZEV1", "PARA", idtmed[10], dimVoid,6);
791 // --- Divide the vacuum slice into sticks along x axis
792 gMC->Gsdvn("ZES0", "ZEV0", fDivZEM[0], 3);
793 gMC->Gsdvn("ZES1", "ZEV1", fDivZEM[0], 3);
795 // --- Positioning the fibers into the sticks
796 gMC->Gspos("ZEMF", 1,"ZES0", 0., 0., 0., irot2, "ONLY");
797 gMC->Gspos("ZEMF", 1,"ZES1", 0., 0., 0., irot2, "ONLY");
799 // --- Positioning the vacuum slice into the tranche
800 Float_t displFib = fDimZEM[1]/fDivZEM[0];
801 gMC->Gspos("ZEV0", 1,"ZETR", -dimVoid[0], 0., 0., 0, "ONLY");
802 gMC->Gspos("ZEV1", 1,"ZETR", -dimVoid[0]+zTran, 0., displFib, 0, "ONLY");
804 // --- Positioning the ZEM into the ZDC - rotation for 90 degrees
805 // NB -> In AliZDCv2 ZEM is positioned in ALIC (instead of in ZDC) volume
806 // beacause it's impossible to make a ZDC pcon volume to contain
807 // both hadronics and EM calorimeters.
808 gMC->Gspos("ZEM ", 1,"ALIC", -fPosZEM[0], fPosZEM[1], fPosZEM[2]+fDimZEM[0], irot1, "ONLY");
810 // Second EM ZDC (same side w.r.t. IP, just on the other side w.r.t. beam pipe)
811 gMC->Gspos("ZEM ", 2,"ALIC", fPosZEM[0], fPosZEM[1], fPosZEM[2]+fDimZEM[0], irot1, "ONLY");
813 // --- Adding last slice at the end of the EM calorimeter
814 Float_t zLastSlice = fPosZEM[2]+kDimZEMPb+2*fDimZEM[0];
815 gMC->Gspos("ZEL2", 1,"ALIC", fPosZEM[0], fPosZEM[1], zLastSlice, irot1, "ONLY");
817 //printf("\n ZEM lenght = %f cm\n",2*fZEMLength);
818 //printf("\n ZEM -> %f < z < %f cm\n",fPosZEM[2],fPosZEM[2]+2*fZEMLength+zLastSlice+kDimZEMPb);
822 //_____________________________________________________________________________
823 void AliZDCv2::DrawModule() const
826 // Draw a shaded view of the Zero Degree Calorimeter version 1
829 // Set everything unseen
830 gMC->Gsatt("*", "seen", -1);
832 // Set ALIC mother transparent
833 gMC->Gsatt("ALIC","SEEN",0);
835 // Set the volumes visible
836 gMC->Gsatt("ZDC ","SEEN",0);
837 gMC->Gsatt("QT01","SEEN",1);
838 gMC->Gsatt("QT02","SEEN",1);
839 gMC->Gsatt("QT03","SEEN",1);
840 gMC->Gsatt("QT04","SEEN",1);
841 gMC->Gsatt("QT05","SEEN",1);
842 gMC->Gsatt("QT06","SEEN",1);
843 gMC->Gsatt("QT07","SEEN",1);
844 gMC->Gsatt("QT08","SEEN",1);
845 gMC->Gsatt("QT09","SEEN",1);
846 gMC->Gsatt("QT10","SEEN",1);
847 gMC->Gsatt("QT11","SEEN",1);
848 gMC->Gsatt("QT12","SEEN",1);
849 gMC->Gsatt("QT13","SEEN",1);
850 gMC->Gsatt("QT14","SEEN",1);
851 gMC->Gsatt("QT15","SEEN",1);
852 gMC->Gsatt("QT16","SEEN",1);
853 gMC->Gsatt("QT17","SEEN",1);
854 gMC->Gsatt("QT18","SEEN",1);
855 gMC->Gsatt("QC01","SEEN",1);
856 gMC->Gsatt("QC02","SEEN",1);
857 gMC->Gsatt("QC03","SEEN",1);
858 gMC->Gsatt("QC04","SEEN",1);
859 gMC->Gsatt("QC05","SEEN",1);
860 gMC->Gsatt("QTD1","SEEN",1);
861 gMC->Gsatt("QTD2","SEEN",1);
862 gMC->Gsatt("QTD3","SEEN",1);
863 gMC->Gsatt("MQXL","SEEN",1);
864 gMC->Gsatt("YMQL","SEEN",1);
865 gMC->Gsatt("MQX ","SEEN",1);
866 gMC->Gsatt("YMQ ","SEEN",1);
867 gMC->Gsatt("ZQYX","SEEN",1);
868 gMC->Gsatt("MD1 ","SEEN",1);
869 gMC->Gsatt("MD1V","SEEN",1);
870 gMC->Gsatt("YD1 ","SEEN",1);
871 gMC->Gsatt("MD2 ","SEEN",1);
872 gMC->Gsatt("YD2 ","SEEN",1);
873 gMC->Gsatt("ZNEU","SEEN",0);
874 gMC->Gsatt("ZNF1","SEEN",0);
875 gMC->Gsatt("ZNF2","SEEN",0);
876 gMC->Gsatt("ZNF3","SEEN",0);
877 gMC->Gsatt("ZNF4","SEEN",0);
878 gMC->Gsatt("ZNG1","SEEN",0);
879 gMC->Gsatt("ZNG2","SEEN",0);
880 gMC->Gsatt("ZNG3","SEEN",0);
881 gMC->Gsatt("ZNG4","SEEN",0);
882 gMC->Gsatt("ZNTX","SEEN",0);
883 gMC->Gsatt("ZN1 ","COLO",4);
884 gMC->Gsatt("ZN1 ","SEEN",1);
885 gMC->Gsatt("ZNSL","SEEN",0);
886 gMC->Gsatt("ZNST","SEEN",0);
887 gMC->Gsatt("ZPRO","SEEN",0);
888 gMC->Gsatt("ZPF1","SEEN",0);
889 gMC->Gsatt("ZPF2","SEEN",0);
890 gMC->Gsatt("ZPF3","SEEN",0);
891 gMC->Gsatt("ZPF4","SEEN",0);
892 gMC->Gsatt("ZPG1","SEEN",0);
893 gMC->Gsatt("ZPG2","SEEN",0);
894 gMC->Gsatt("ZPG3","SEEN",0);
895 gMC->Gsatt("ZPG4","SEEN",0);
896 gMC->Gsatt("ZPTX","SEEN",0);
897 gMC->Gsatt("ZP1 ","COLO",6);
898 gMC->Gsatt("ZP1 ","SEEN",1);
899 gMC->Gsatt("ZPSL","SEEN",0);
900 gMC->Gsatt("ZPST","SEEN",0);
901 gMC->Gsatt("ZEM ","COLO",7);
902 gMC->Gsatt("ZEM ","SEEN",1);
903 gMC->Gsatt("ZEMF","SEEN",0);
904 gMC->Gsatt("ZETR","SEEN",0);
905 gMC->Gsatt("ZEL0","SEEN",0);
906 gMC->Gsatt("ZEL1","SEEN",0);
907 gMC->Gsatt("ZEL2","SEEN",0);
908 gMC->Gsatt("ZEV0","SEEN",0);
909 gMC->Gsatt("ZEV1","SEEN",0);
910 gMC->Gsatt("ZES0","SEEN",0);
911 gMC->Gsatt("ZES1","SEEN",0);
914 gMC->Gdopt("hide", "on");
915 gMC->Gdopt("shad", "on");
916 gMC->Gsatt("*", "fill", 7);
917 gMC->SetClipBox(".");
918 gMC->SetClipBox("*", 0, 100, -100, 100, 12000, 16000);
920 gMC->Gdraw("alic", 40, 30, 0, 488, 220, .07, .07);
921 gMC->Gdhead(1111, "Zero Degree Calorimeter Version 1");
922 gMC->Gdman(18, 4, "MAN");
925 //_____________________________________________________________________________
926 void AliZDCv2::CreateMaterials()
929 // Create Materials for the Zero Degree Calorimeter
932 Float_t dens, ubuf[1], wmat[2], a[2], z[2];
934 // --- Store in UBUF r0 for nuclear radius calculation R=r0*A**1/3
936 // --- Tantalum -> ZN passive material
938 AliMaterial(1, "TANT", 180.95, 73., 16.65, .4, 11.9, ubuf, 1);
942 // AliMaterial(1, "TUNG", 183.85, 74., 19.3, .35, 10.3, ubuf, 1);
944 // --- Brass (CuZn) -> ZP passive material
952 AliMixture(2, "BRASS ", a, z, dens, 2, wmat);
962 AliMixture(3, "SIO2 ", a, z, dens, -2, wmat);
966 AliMaterial(5, "LEAD", 207.19, 82., 11.35, .56, 18.5, ubuf, 1);
970 AliMaterial(6, "COPP", 63.54, 29., 8.96, 1.4, 0., ubuf, 1);
972 // --- Iron (energy loss taken into account)
974 AliMaterial(7, "IRON0", 55.85, 26., 7.87, 1.76, 0., ubuf, 1);
976 // --- Iron (no energy loss)
978 AliMaterial(8, "IRON1", 55.85, 26., 7.87, 1.76, 0., ubuf, 1);
979 AliMaterial(13, "IRON2", 55.85, 26., 7.87, 1.76, 0., ubuf, 1);
981 // ---------------------------------------------------------
982 Float_t aResGas[3]={1.008,12.0107,15.9994};
983 Float_t zResGas[3]={1.,6.,8.};
984 Float_t wResGas[3]={0.28,0.28,0.44};
985 Float_t dResGas = 3.2E-14;
987 // --- Vacuum (no magnetic field)
988 AliMixture(10, "VOID", aResGas, zResGas, dResGas, 3, wResGas);
989 //AliMaterial(10, "VOID", 1e-16, 1e-16, 1e-16, 1e16, 1e16, ubuf,0);
991 // --- Vacuum (with magnetic field)
992 AliMixture(11, "VOIM", aResGas, zResGas, dResGas, 3, wResGas);
993 //AliMaterial(11, "VOIM", 1e-16, 1e-16, 1e-16, 1e16, 1e16, ubuf,0);
995 // --- Air (no magnetic field)
996 Float_t aAir[4]={12.0107,14.0067,15.9994,39.948};
997 Float_t zAir[4]={6.,7.,8.,18.};
998 Float_t wAir[4]={0.000124,0.755267,0.231781,0.012827};
999 Float_t dAir = 1.20479E-3;
1001 AliMixture(12, "Air $", aAir, zAir, dAir, 4, wAir);
1002 //AliMaterial(12, "Air $", 14.61, 7.3, .001205, 30420., 67500., ubuf, 0);
1004 // --- Definition of tracking media:
1006 // --- Tantalum = 1 ;
1008 // --- Fibers (SiO2) = 3 ;
1009 // --- Fibers (SiO2) = 4 ;
1012 // --- Iron (with energy loss) = 7 ;
1013 // --- Iron (without energy loss) = 8 ;
1014 // --- Vacuum (no field) = 10
1015 // --- Vacuum (with field) = 11
1016 // --- Air (no field) = 12
1018 // ****************************************************
1019 // Tracking media parameters
1021 Float_t epsil = 0.01; // Tracking precision,
1022 Float_t stmin = 0.01; // Min. value 4 max. step (cm)
1023 Float_t stemax = 1.; // Max. step permitted (cm)
1024 Float_t tmaxfd = 0.; // Maximum angle due to field (degrees)
1025 Float_t deemax = -1.; // Maximum fractional energy loss
1026 Float_t nofieldm = 0.; // Max. field value (no field)
1027 Float_t fieldm = 45.; // Max. field value (with field)
1028 Int_t isvol = 0; // ISVOL =0 -> not sensitive volume
1029 Int_t isvolActive = 1; // ISVOL =1 -> sensitive volume
1030 Int_t inofld = 0; // IFIELD=0 -> no magnetic field
1031 Int_t ifield =2; // IFIELD=2 -> magnetic field defined in AliMagFC.h
1032 // *****************************************************
1034 AliMedium(1, "ZTANT", 1, isvolActive, inofld, nofieldm, tmaxfd, stemax, deemax, epsil, stmin);
1035 AliMedium(2, "ZBRASS",2, isvolActive, inofld, nofieldm, tmaxfd, stemax, deemax, epsil, stmin);
1036 AliMedium(3, "ZSIO2", 3, isvolActive, inofld, nofieldm, tmaxfd, stemax, deemax, epsil, stmin);
1037 AliMedium(4, "ZQUAR", 3, isvolActive, inofld, nofieldm, tmaxfd, stemax, deemax, epsil, stmin);
1038 AliMedium(5, "ZLEAD", 5, isvolActive, inofld, nofieldm, tmaxfd, stemax, deemax, epsil, stmin);
1039 AliMedium(6, "ZCOPP", 6, isvol, inofld, nofieldm, tmaxfd, stemax, deemax, epsil, stmin);
1040 AliMedium(7, "ZIRON", 7, isvol, inofld, nofieldm, tmaxfd, stemax, deemax, epsil, stmin);
1041 AliMedium(8, "ZIRONN",8, isvol, inofld, nofieldm, tmaxfd, stemax, deemax, epsil, stmin);
1042 AliMedium(10,"ZVOID",10, isvol, inofld, nofieldm, tmaxfd, stemax, deemax, epsil, stmin);
1043 AliMedium(12,"ZAIR", 12, isvol, inofld, nofieldm, tmaxfd, stemax, deemax, epsil, stmin);
1045 AliMedium(11,"ZVOIM", 11, isvol, ifield, fieldm, tmaxfd, stemax, deemax, epsil, stmin);
1046 AliMedium(13,"ZIRONE",13, isvol, ifield, fieldm, tmaxfd, stemax, deemax, epsil, stmin);
1049 //_____________________________________________________________________________
1050 void AliZDCv2::AddAlignableVolumes() const
1053 // Create entries for alignable volumes associating the symbolic volume
1054 // name with the corresponding volume path. Needs to be syncronized with
1055 // eventual changes in the geometry.
1057 TString volpath1 = "ALIC_1/ZDC_1/ZNEU_1";
1058 TString volpath2 = "ALIC_1/ZDC_1/ZPRO_1";
1060 TString symname1="ZDC/NeutronZDC";
1061 TString symname2="ZDC/ProtonZDC";
1063 if(!gGeoManager->SetAlignableEntry(symname1.Data(),volpath1.Data()))
1064 AliFatal(Form("Alignable entry %s not created. Volume path %s not valid", symname1.Data(),volpath1.Data()));
1066 if(!gGeoManager->SetAlignableEntry(symname2.Data(),volpath2.Data()))
1067 AliFatal(Form("Alignable entry %s not created. Volume path %s not valid", symname2.Data(),volpath2.Data()));
1070 //_____________________________________________________________________________
1071 void AliZDCv2::Init()
1074 Int_t *idtmed = fIdtmed->GetArray();
1076 // Thresholds for showering in the ZDCs
1078 gMC->Gstpar(idtmed[i], "CUTGAM", .001);
1079 gMC->Gstpar(idtmed[i], "CUTELE", .001);
1080 gMC->Gstpar(idtmed[i], "CUTNEU", .01);
1081 gMC->Gstpar(idtmed[i], "CUTHAD", .01);
1083 gMC->Gstpar(idtmed[i], "CUTGAM", .001);
1084 gMC->Gstpar(idtmed[i], "CUTELE", .001);
1085 gMC->Gstpar(idtmed[i], "CUTNEU", .01);
1086 gMC->Gstpar(idtmed[i], "CUTHAD", .01);
1088 gMC->Gstpar(idtmed[i], "CUTGAM", .001);
1089 gMC->Gstpar(idtmed[i], "CUTELE", .001);
1090 gMC->Gstpar(idtmed[i], "CUTNEU", .01);
1091 gMC->Gstpar(idtmed[i], "CUTHAD", .01);
1093 // Avoid too detailed showering in TDI
1095 gMC->Gstpar(idtmed[i], "CUTGAM", .1);
1096 gMC->Gstpar(idtmed[i], "CUTELE", .1);
1097 gMC->Gstpar(idtmed[i], "CUTNEU", 1.);
1098 gMC->Gstpar(idtmed[i], "CUTHAD", 1.);
1100 // Avoid too detailed showering along the beam line
1101 i = 7; //iron with energy loss (ZIRON)
1102 gMC->Gstpar(idtmed[i], "CUTGAM", .1);
1103 gMC->Gstpar(idtmed[i], "CUTELE", .1);
1104 gMC->Gstpar(idtmed[i], "CUTNEU", 1.);
1105 gMC->Gstpar(idtmed[i], "CUTHAD", 1.);
1107 // Avoid too detailed showering along the beam line
1108 i = 8; //iron with energy loss (ZIRONN)
1109 gMC->Gstpar(idtmed[i], "CUTGAM", .1);
1110 gMC->Gstpar(idtmed[i], "CUTELE", .1);
1111 gMC->Gstpar(idtmed[i], "CUTNEU", 1.);
1112 gMC->Gstpar(idtmed[i], "CUTHAD", 1.);
1113 // Avoid too detailed showering along the beam line
1114 i = 13; //iron with energy loss (ZIRONN)
1115 gMC->Gstpar(idtmed[i], "CUTGAM", 1.);
1116 gMC->Gstpar(idtmed[i], "CUTELE", 1.);
1117 gMC->Gstpar(idtmed[i], "CUTNEU", 1.);
1118 gMC->Gstpar(idtmed[i], "CUTHAD", 1.);
1120 // Avoid interaction in fibers (only energy loss allowed)
1121 i = 3; //fibers (ZSI02)
1122 gMC->Gstpar(idtmed[i], "DCAY", 0.);
1123 gMC->Gstpar(idtmed[i], "MULS", 0.);
1124 gMC->Gstpar(idtmed[i], "PFIS", 0.);
1125 gMC->Gstpar(idtmed[i], "MUNU", 0.);
1126 gMC->Gstpar(idtmed[i], "LOSS", 1.);
1127 gMC->Gstpar(idtmed[i], "PHOT", 0.);
1128 gMC->Gstpar(idtmed[i], "COMP", 0.);
1129 gMC->Gstpar(idtmed[i], "PAIR", 0.);
1130 gMC->Gstpar(idtmed[i], "BREM", 0.);
1131 gMC->Gstpar(idtmed[i], "DRAY", 0.);
1132 gMC->Gstpar(idtmed[i], "ANNI", 0.);
1133 gMC->Gstpar(idtmed[i], "HADR", 0.);
1134 i = 4; //fibers (ZQUAR)
1135 gMC->Gstpar(idtmed[i], "DCAY", 0.);
1136 gMC->Gstpar(idtmed[i], "MULS", 0.);
1137 gMC->Gstpar(idtmed[i], "PFIS", 0.);
1138 gMC->Gstpar(idtmed[i], "MUNU", 0.);
1139 gMC->Gstpar(idtmed[i], "LOSS", 1.);
1140 gMC->Gstpar(idtmed[i], "PHOT", 0.);
1141 gMC->Gstpar(idtmed[i], "COMP", 0.);
1142 gMC->Gstpar(idtmed[i], "PAIR", 0.);
1143 gMC->Gstpar(idtmed[i], "BREM", 0.);
1144 gMC->Gstpar(idtmed[i], "DRAY", 0.);
1145 gMC->Gstpar(idtmed[i], "ANNI", 0.);
1146 gMC->Gstpar(idtmed[i], "HADR", 0.);
1148 // Avoid interaction in void
1149 i = 11; //void with field
1150 gMC->Gstpar(idtmed[i], "DCAY", 0.);
1151 gMC->Gstpar(idtmed[i], "MULS", 0.);
1152 gMC->Gstpar(idtmed[i], "PFIS", 0.);
1153 gMC->Gstpar(idtmed[i], "MUNU", 0.);
1154 gMC->Gstpar(idtmed[i], "LOSS", 0.);
1155 gMC->Gstpar(idtmed[i], "PHOT", 0.);
1156 gMC->Gstpar(idtmed[i], "COMP", 0.);
1157 gMC->Gstpar(idtmed[i], "PAIR", 0.);
1158 gMC->Gstpar(idtmed[i], "BREM", 0.);
1159 gMC->Gstpar(idtmed[i], "DRAY", 0.);
1160 gMC->Gstpar(idtmed[i], "ANNI", 0.);
1161 gMC->Gstpar(idtmed[i], "HADR", 0.);
1164 fMedSensZN = idtmed[1]; // Sensitive volume: ZN passive material
1165 fMedSensZP = idtmed[2]; // Sensitive volume: ZP passive material
1166 fMedSensF1 = idtmed[3]; // Sensitive volume: fibres type 1
1167 fMedSensF2 = idtmed[4]; // Sensitive volume: fibres type 2
1168 fMedSensZEM = idtmed[5]; // Sensitive volume: ZEM passive material
1169 fMedSensTDI = idtmed[6]; // Sensitive volume: TDI Cu shield
1170 fMedSensPI = idtmed[7]; // Sensitive volume: beam pipes
1171 fMedSensGR = idtmed[12]; // Sensitive volume: air into the grooves
1174 //_____________________________________________________________________________
1175 void AliZDCv2::InitTables()
1178 // Read light tables for Cerenkov light production parameterization
1183 char *lightfName1,*lightfName2,*lightfName3,*lightfName4,
1184 *lightfName5,*lightfName6,*lightfName7,*lightfName8;
1185 FILE *fp1, *fp2, *fp3, *fp4, *fp5, *fp6, *fp7, *fp8;
1187 // --- Reading light tables for ZN
1188 lightfName1 = gSystem->ExpandPathName("$ALICE_ROOT/ZDC/light22620362207s");
1189 if((fp1 = fopen(lightfName1,"r")) == NULL){
1190 printf("Cannot open file fp1 \n");
1193 lightfName2 = gSystem->ExpandPathName("$ALICE_ROOT/ZDC/light22620362208s");
1194 if((fp2 = fopen(lightfName2,"r")) == NULL){
1195 printf("Cannot open file fp2 \n");
1198 lightfName3 = gSystem->ExpandPathName("$ALICE_ROOT/ZDC/light22620362209s");
1199 if((fp3 = fopen(lightfName3,"r")) == NULL){
1200 printf("Cannot open file fp3 \n");
1203 lightfName4 = gSystem->ExpandPathName("$ALICE_ROOT/ZDC/light22620362210s");
1204 if((fp4 = fopen(lightfName4,"r")) == NULL){
1205 printf("Cannot open file fp4 \n");
1209 for(k=0; k<fNalfan; k++){
1210 for(j=0; j<fNben; j++){
1211 fscanf(fp1,"%f",&fTablen[0][k][j]);
1212 fscanf(fp2,"%f",&fTablen[1][k][j]);
1213 fscanf(fp3,"%f",&fTablen[2][k][j]);
1214 fscanf(fp4,"%f",&fTablen[3][k][j]);
1222 // --- Reading light tables for ZP and ZEM
1223 lightfName5 = gSystem->ExpandPathName("$ALICE_ROOT/ZDC/light22620552207s");
1224 if((fp5 = fopen(lightfName5,"r")) == NULL){
1225 printf("Cannot open file fp5 \n");
1228 lightfName6 = gSystem->ExpandPathName("$ALICE_ROOT/ZDC/light22620552208s");
1229 if((fp6 = fopen(lightfName6,"r")) == NULL){
1230 printf("Cannot open file fp6 \n");
1233 lightfName7 = gSystem->ExpandPathName("$ALICE_ROOT/ZDC/light22620552209s");
1234 if((fp7 = fopen(lightfName7,"r")) == NULL){
1235 printf("Cannot open file fp7 \n");
1238 lightfName8 = gSystem->ExpandPathName("$ALICE_ROOT/ZDC/light22620552210s");
1239 if((fp8 = fopen(lightfName8,"r")) == NULL){
1240 printf("Cannot open file fp8 \n");
1244 for(k=0; k<fNalfap; k++){
1245 for(j=0; j<fNbep; j++){
1246 fscanf(fp5,"%f",&fTablep[0][k][j]);
1247 fscanf(fp6,"%f",&fTablep[1][k][j]);
1248 fscanf(fp7,"%f",&fTablep[2][k][j]);
1249 fscanf(fp8,"%f",&fTablep[3][k][j]);
1257 //_____________________________________________________________________________
1258 void AliZDCv2::StepManager()
1261 // Routine called at every step in the Zero Degree Calorimeters
1264 Int_t j, vol[2], ibeta=0, ialfa, ibe, nphe;
1265 Float_t x[3], xdet[3], destep, hits[10], m, ekin, um[3], ud[3], be, out;
1267 Float_t xalic[3], z, guiEff, guiPar[4]={0.31,-0.0004,0.0197,0.7958};
1268 Double_t s[3], p[4];
1271 for (j=0;j<10;j++) hits[j]=-999.;
1273 // --- This part is for no shower developement in beam pipe and TDI
1274 // If particle interacts with beam pipe or TDI -> return
1275 if((gMC->CurrentMedium() == fMedSensPI) || (gMC->CurrentMedium() == fMedSensTDI)){
1276 // If option NoShower is set -> StopTrack
1278 if(gMC->CurrentMedium() == fMedSensPI) {
1279 knamed = gMC->CurrentVolName();
1280 if(!strncmp(knamed,"YMQ",3)) fpLostIT += 1;
1281 if(!strncmp(knamed,"YD1",3)) fpLostD1 += 1;
1283 else if(gMC->CurrentMedium() == fMedSensTDI){ // NB->Cu = TDI or D1 vacuum chamber
1284 knamed = gMC->CurrentVolName();
1285 if(!strncmp(knamed,"MD1",3)) fpLostD1 += 1;
1286 if(!strncmp(knamed,"QTD",3)) fpLostTDI += 1;
1288 printf("\n # of spectators lost in IT = %d\n",fpLostIT);
1289 printf("\n # of spectators lost in D1 = %d\n",fpLostD1);
1290 printf("\n # of spectators lost in TDI = %d\n\n",fpLostTDI);
1296 if((gMC->CurrentMedium() == fMedSensZN) || (gMC->CurrentMedium() == fMedSensZP) ||
1297 (gMC->CurrentMedium() == fMedSensGR) || (gMC->CurrentMedium() == fMedSensF1) ||
1298 (gMC->CurrentMedium() == fMedSensF2) || (gMC->CurrentMedium() == fMedSensZEM)){
1301 //Particle coordinates
1302 gMC->TrackPosition(s[0],s[1],s[2]);
1303 for(j=0; j<=2; j++) x[j] = s[j];
1308 // Determine in which ZDC the particle is
1309 knamed = gMC->CurrentVolName();
1310 if(!strncmp(knamed,"ZN",2)) vol[0]=1;
1311 else if(!strncmp(knamed,"ZP",2)) vol[0]=2;
1312 else if(!strncmp(knamed,"ZE",2)) vol[0]=3;
1314 // Determine in which quadrant the particle is
1315 if(vol[0]==1){ //Quadrant in ZN
1316 // Calculating particle coordinates inside ZN
1317 xdet[0] = x[0]-fPosZN[0];
1318 xdet[1] = x[1]-fPosZN[1];
1319 // Calculating quadrant in ZN
1321 if(xdet[1]>=0.) vol[1]=1;
1322 else if(xdet[1]<0.) vol[1]=3;
1324 else if(xdet[0]>0.){
1325 if(xdet[1]>=0.) vol[1]=2;
1326 else if(xdet[1]<0.) vol[1]=4;
1328 if((vol[1]!=1) && (vol[1]!=2) && (vol[1]!=3) && (vol[1]!=4))
1329 printf("\n ZDC StepManager->ERROR in ZN!!! vol[1] = %d, xdet[0] = %f,"
1330 "xdet[1] = %f\n",vol[1], xdet[0], xdet[1]);
1333 else if(vol[0]==2){ //Quadrant in ZP
1334 // Calculating particle coordinates inside ZP
1335 xdet[0] = x[0]-fPosZP[0];
1336 xdet[1] = x[1]-fPosZP[1];
1337 if(xdet[0]>=fDimZP[0]) xdet[0]=fDimZP[0]-0.01;
1338 if(xdet[0]<=-fDimZP[0]) xdet[0]=-fDimZP[0]+0.01;
1339 // Calculating tower in ZP
1340 Float_t xqZP = xdet[0]/(fDimZP[0]/2.);
1341 for(int i=1; i<=4; i++){
1342 if(xqZP>=(i-3) && xqZP<(i-2)){
1347 if((vol[1]!=1) && (vol[1]!=2) && (vol[1]!=3) && (vol[1]!=4))
1348 printf(" ZDC StepManager->ERROR in ZP!!! vol[1] = %d, xdet[0] = %f,"
1349 "xdet[1] = %f\n",vol[1], xdet[0], xdet[1]);
1352 // Quadrant in ZEM: vol[1] = 1 -> particle in 1st ZEM (placed at x = 8.5 cm)
1353 // vol[1] = 2 -> particle in 2nd ZEM (placed at x = -8.5 cm)
1354 else if(vol[0] == 3){
1357 // Particle x-coordinate inside ZEM1
1358 xdet[0] = x[0]-fPosZEM[0];
1362 // Particle x-coordinate inside ZEM2
1363 xdet[0] = x[0]+fPosZEM[0];
1365 xdet[1] = x[1]-fPosZEM[1];
1368 // Store impact point and kinetic energy of the ENTERING particle
1370 if(gMC->IsTrackEntering()){
1372 gMC->TrackMomentum(p[0],p[1],p[2],p[3]);
1374 // Impact point on ZDC
1382 AddHit(gAlice->GetMCApp()->GetCurrentTrackNumber(), vol, hits);
1385 if(vol[0]==1) fnDetected += 1;
1386 else if(vol[0]==2) fpDetected += 1;
1387 printf("\n # of nucleons in ZN = %d",fnDetected);
1388 printf("\n # of nucleons in ZP = %d\n\n",fpDetected);
1394 // Charged particles -> Energy loss
1395 if((destep=gMC->Edep())){
1396 if(gMC->IsTrackStop()){
1397 gMC->TrackMomentum(p[0],p[1],p[2],p[3]);
1398 m = gMC->TrackMass();
1403 AddHit(gAlice->GetMCApp()->GetCurrentTrackNumber(), vol, hits);
1409 AddHit(gAlice->GetMCApp()->GetCurrentTrackNumber(), vol, hits);
1415 // *** Light production in fibres
1416 if((gMC->CurrentMedium() == fMedSensF1) || (gMC->CurrentMedium() == fMedSensF2)){
1418 //Select charged particles
1419 if((destep=gMC->Edep())){
1421 // Particle velocity
1423 gMC->TrackMomentum(p[0],p[1],p[2],p[3]);
1424 Float_t ptot=TMath::Sqrt(p[0]*p[0]+p[1]*p[1]+p[2]*p[2]);
1425 if(p[3] > 0.00001) beta = ptot/p[3];
1427 if(beta<0.67)return;
1428 else if((beta>=0.67) && (beta<=0.75)) ibeta = 0;
1429 else if((beta>0.75) && (beta<=0.85)) ibeta = 1;
1430 else if((beta>0.85) && (beta<=0.95)) ibeta = 2;
1431 else if(beta>0.95) ibeta = 3;
1433 // Angle between particle trajectory and fibre axis
1434 // 1 -> Momentum directions
1438 gMC->Gmtod(um,ud,2);
1439 // 2 -> Angle < limit angle
1440 Double_t alfar = TMath::ACos(ud[2]);
1441 Double_t alfa = alfar*kRaddeg;
1442 if(alfa>=110.) return;
1444 ialfa = Int_t(1.+alfa/2.);
1446 // Distance between particle trajectory and fibre axis
1447 gMC->TrackPosition(s[0],s[1],s[2]);
1448 for(j=0; j<=2; j++){
1451 gMC->Gmtod(x,xdet,1);
1452 if(TMath::Abs(ud[0])>0.00001){
1453 Float_t dcoeff = ud[1]/ud[0];
1454 be = TMath::Abs((xdet[1]-dcoeff*xdet[0])/TMath::Sqrt(dcoeff*dcoeff+1.));
1457 be = TMath::Abs(ud[0]);
1460 ibe = Int_t(be*1000.+1);
1461 //if((vol[0]==1)) radius = fFibZN[1];
1462 //else if((vol[0]==2)) radius = fFibZP[1];
1464 //Looking into the light tables
1465 Float_t charge = gMC->TrackCharge();
1467 if((vol[0]==1)) { // (1) ZN fibres
1468 if(ibe>fNben) ibe=fNben;
1469 out = charge*charge*fTablen[ibeta][ialfa][ibe];
1470 nphe = gRandom->Poisson(out);
1472 //if(ibeta==3) printf("\t %f \t %f \t %f\n",alfa, be, out);
1473 //printf("\t ibeta = %d, ialfa = %d, ibe = %d -> nphe = %d\n\n",ibeta,ialfa,ibe,nphe);
1474 if(gMC->CurrentMedium() == fMedSensF1){
1475 hits[7] = nphe; //fLightPMQ
1478 AddHit(gAlice->GetMCApp()->GetCurrentTrackNumber(), vol, hits);
1482 hits[8] = nphe; //fLightPMC
1484 AddHit(gAlice->GetMCApp()->GetCurrentTrackNumber(), vol, hits);
1487 else if((vol[0]==2)) { // (2) ZP fibres
1488 if(ibe>fNbep) ibe=fNbep;
1489 out = charge*charge*fTablep[ibeta][ialfa][ibe];
1490 nphe = gRandom->Poisson(out);
1491 if(gMC->CurrentMedium() == fMedSensF1){
1492 hits[7] = nphe; //fLightPMQ
1495 AddHit(gAlice->GetMCApp()->GetCurrentTrackNumber(), vol, hits);
1499 hits[8] = nphe; //fLightPMC
1501 AddHit(gAlice->GetMCApp()->GetCurrentTrackNumber(), vol, hits);
1504 else if((vol[0]==3)) { // (3) ZEM fibres
1505 if(ibe>fNbep) ibe=fNbep;
1506 out = charge*charge*fTablep[ibeta][ialfa][ibe];
1507 gMC->TrackPosition(s[0],s[1],s[2]);
1508 for(j=0; j<=2; j++){
1511 // z-coordinate from ZEM front face
1512 // NB-> fPosZEM[2]+fZEMLength = -1000.+2*10.3 = 979.69 cm
1513 z = -xalic[2]+fPosZEM[2]+2*fZEMLength-xalic[1];
1514 // z = xalic[2]-fPosZEM[2]-fZEMLength-xalic[1]*(TMath::Tan(45.*kDegrad));
1515 // printf("\n fPosZEM[2]+2*fZEMLength = %f", fPosZEM[2]+2*fZEMLength);
1516 guiEff = guiPar[0]*(guiPar[1]*z*z+guiPar[2]*z+guiPar[3]);
1518 nphe = gRandom->Poisson(out);
1519 // printf(" out*guiEff = %f nphe = %d", out, nphe);
1522 hits[8] = nphe; //fLightPMC (ZEM1)
1524 AddHit(gAlice->GetMCApp()->GetCurrentTrackNumber(), vol, hits);
1527 hits[7] = nphe; //fLightPMQ (ZEM2)
1530 AddHit(gAlice->GetMCApp()->GetCurrentTrackNumber(), vol, hits);