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[u/mrichter/AliRoot.git] / START / AliSTARTv1.cxx
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bc46b572 1/**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
3 * *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
6 * *
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 **************************************************************************/
15
16
17/////////////////////////////////////////////////////////////////////
18// //
19// START ( T-zero) detector version 1 //
20//
21//Begin Html
22/*
23<img src="gif/AliSTARTv1Class.gif">
24*/
25//End Html
26// //
27// //
28//////////////////////////////////////////////////////////////////////
29
30#include <TMath.h>
31#include <TGeometry.h>
32#include <TTUBE.h>
33#include <TNode.h>
0cc62300 34#include <TLorentzVector.h>
bc46b572 35
36#include "AliSTARTv1.h"
37#include "AliRun.h"
38#include "AliMC.h"
94de3818 39#include "AliMagF.h"
bc46b572 40#include "AliSTARThit.h"
41
42#include <iostream.h>
43#include <fstream.h>
44
45//#include "TGeant3.h"
46#include <stdlib.h>
47
48ClassImp(AliSTARTv1)
49
50//--------------------------------------------------------------------
51AliSTARTv1::AliSTARTv1(const char *name, const char *title):
52 AliSTART(name,title)
53{
54 //
55 // Standart constructor for START Detector version 0
56 //
57 fIdSens1=0;
58// setBufferSize(128000);
59}
60//-------------------------------------------------------------------------
61void AliSTARTv1::CreateGeometry()
62{
63 //
64 // Create the geometry of START Detector version 0
65 //
66 // begin Html
67 /*
68 <img src="gif/AliSTARTv0.gif">
69 */
70 //
71
72
73 Int_t *idtmed = fIdtmed->GetArray();
74
75 Int_t is;
76 Int_t idrotm[999];
77 Float_t x,y,z;
78
79 Float_t pstart[3]={4.5,10.7,5.3};
ef51244a 80 Float_t pinstart[3]={0.,1.3,5.25};
bc46b572 81 Float_t ppmt[3]={0.,1.3,3.5};
82 Float_t pdivider[3]={0.,1.2,1.75};
83 Float_t pdiv2[3]={0.,1.2,1.25};
84 Float_t pdiv1[3]={0.6,1.2,0.5};
85 Float_t ptop[3]={0.,1.3,1.5};
86 Float_t pbot[3]={0.6,1.2,0.1};
87 Float_t pglass[3]={1.2,1.3,2.};
88 Float_t pcer[3]={0.9,1.1,0.09};
89 Float_t psteel[3]={0.9,1.1,0.01};
90 Float_t ppins[3]={0.6,1.2,0.014};
91 Float_t phole[3]={0.6,1.2,0.015};
92 Float_t pknob[3]={0.5,0.6,0.4};
93 Float_t pknob_vac[3]={0.,0.5,0.4};
94 Float_t pknob_bot[3]={0.,0.6,0.05};
95 Float_t pribber[3] = {0.,1.2,2.413/2.};
96 Float_t presist[3] = {0.,1.2,0.087/2.};
97
98 Float_t zdet=75.;
99 //-------------------------------------------------------------------
100 // START volume
101 //-------------------------------------------------------------------
102
103 // Float_t theta=TMath::ATan(6.5/zdet);
104 Float_t theta=(180./3.1415)*TMath::ATan(6.5/zdet);
105 AliMatrix(idrotm[901], 90., 0., 90., 90., 180., 0.);
106
107 gMC->Gsvolu("STRT","TUBE",idtmed[1],pstart,3);
108 gMC->Gspos("STRT",1,"ALIC",0.,0.,zdet,0,"ONLY");
109 gMC->Gspos("STRT",2,"ALIC",0.,0.,-zdet,idrotm[901],"ONLY");
110
111//START interior
ef51244a 112 gMC->Gsvolu("INST","TUBE",idtmed[1],pinstart,3);
bc46b572 113 gMC->Gsvolu("PMT ","TUBE",idtmed[3],ppmt,3);
114 gMC->Gsvolu("DIVI","TUBE",idtmed[3],pdivider,3);
115
116// first ring: 12 units of Scintillator+PMT+divider
117 Double_t dang1 = 2*TMath::Pi()/12;
118 for (is=1; is<=12; is++)
119 {
120 AliMatrix(idrotm[901+is],
121 90.-theta, 30.*is,
122 90., 90.+30.*is,
123 theta, 180.+30.*is);
124 x=6.5*TMath::Sin(is*dang1);
125 y=6.5*TMath::Cos(is*dang1);
ef51244a 126 z=-pstart[2]+pinstart[2];
127 gMC->Gspos("INST",is,"STRT",x,y,z,idrotm[901+is],"ONLY");
bc46b572 128 printf("z PMT %f\n",z);
ef51244a 129
130
131 x=0;
132 y=0;
133 z=-pinstart[2]+ppmt[2];
bc46b572 134 printf(" is %d, z Divider %f\n",is,z);
ef51244a 135 gMC->Gspos("PMT ",is,"INST",x,y,z,0,"ONLY");
136 z=pinstart[2]-pdivider[2];
137 gMC->Gspos("DIVI",is,"INST",x,y,z,0,"ONLY");
bc46b572 138 }
139 /*
140//second ring: 20 units of Scintillator+PMT+divider
141 Double_t dang2 = 2*TMath::Pi()/26;
142 Double_t dang3 = 2*TMath::Pi()/20;
143 for (is=14; is<=33;is++)
144 {
145 x=9.3*TMath::Sin(dang2+(is-13)*dang3);
146 y=9.3*TMath::Cos(dang2+(is-13)*dang3);
147 z=-pstart[2]+ppmt[2];
148 gMC->Gspos("PMT ",is,"STRT",x,y,z,0,"ONLY");
149 z=z+ppmt[2]+pdiv2[2];
150 gMC->Gspos("DIVI",is,"STRT",x,y,z,0,"ONLY");
151 }
152 */
153// PMT
154
155 // Entry window (glass)
156 gMC->Gsvolu("PTOP","TUBE",idtmed[6],ptop,3);
157 z=-ppmt[2]+ptop[2];
158 gMC->Gspos("PTOP",1,"PMT ",0,0,z,0,"ONLY");
159 // printf("Z PTOP %f -ppmt[2] %f ptop[2] %f\n",z,-ppmt[2],ptop[2]);
160 // Bottom glass
161 gMC->Gsvolu("PBOT","TUBE",idtmed[6],pbot,3);
162 z=ppmt[2]-pbot[2];
163 printf("Z bottom %f\n",z);
164 gMC->Gspos("PBOT",1,"PMT ",0,0,z,0,"ONLY");
165 // Side cylinder glass
166 gMC->Gsvolu("POUT","TUBE",idtmed[6],pglass,3);
167 z=ppmt[2]-pglass[2];
168 // printf("Z glass %f\n",z);
169 gMC->Gspos("POUT",1,"PMT ",0,0,z,0,"ONLY");
170 //PMT electrodes support structure
171 gMC->Gsvolu("PCER","TUBE",idtmed[4],pcer,3);
172 gMC->Gsvolu("PSTE","TUBE",idtmed[8],psteel,3);
173 z=-ppmt[2]+2*ptop[2]+0.3;;
174 // printf("Z Cer 1 %f\n",z);
175 for (is=1; is<=15; is++)
176 {
177 z=z+psteel[2]+pcer[2];
178 gMC->Gspos("PCER",is,"PMT",0,0,z,0,"ONLY");
179 z=z+psteel[2]+pcer[2];
180 gMC->Gspos("PSTE",is,"PMT",0,0,z,0,"ONLY");
181 }
182
183 // Divider
184 // Knob at the bottom of PMT baloon
185
186 gMC->Gsvolu("KNOB","TUBE",idtmed[6],pknob,3);
187 z=-pdivider[2]+pknob[2];
188 // printf("zknob %f\n",z);
189 gMC->Gspos("KNOB",1,"DIVI",0,0,z,0,"ONLY");
190 gMC->Gsvolu("KNBO","TUBE",idtmed[6],pknob_bot,3);
191 z=-pdivider[2]+2*pknob[2]+pknob_bot[2];
192 // printf("knobbot %f\n",z);
193 gMC->Gspos("KNBO",1,"DIVI ",0,0,z,0,"ONLY");
194 gMC->Gsvolu("KNVA","TUBE",idtmed[3],pknob_vac,3);
195 z=-pdivider[2]+pknob_vac[2];
196 // printf("knobvac %f\n",z);
197 gMC->Gspos("KNVA",1,"DIVI",0,0,z,0,"ONLY");
198 //Steel pins + pin holes
199 gMC->Gsvolu("PINS","TUBE",idtmed[8],ppins,3);
200 z=-pdivider[2]+ppins[2];
201 gMC->Gspos("PINS",1,"DIVI",0,0,z,0,"ONLY");
202 gMC->Gsvolu("HOLE","TUBE",idtmed[11],phole,3);
203 z=-pdivider[2]+2*ppins[2]+phole[2];
204 gMC->Gspos("HOLE",1,"DIVI",0,0,z,0,"ONLY");
205
206 //Socket
207 gMC->Gsvolu("DIV1","TUBE",idtmed[4],pdiv1,3);
208 z=-pdivider[2]+pdiv1[2];
209 gMC->Gspos("DIV1",1,"DIVI",0,0,z,0,"ONLY");
210 //Resistors
211 gMC->Gsvolu("DIV2","TUBE",idtmed[1],pdiv2,3);
212 z=pdivider[2]-pdiv2[2];
213 gMC->Gspos("DIV2",1,"DIVI",0,0,z,0,"ONLY");
214 gMC->Gsvolu("DRES","TUBE",idtmed[4],presist,3);
215 z=-pdiv2[2]+presist[2];
216 gMC->Gspos("DRES",1,"DIV2",0,0,z,0,"ONLY");
217 gMC->Gsvolu("DRIB","TUBE",idtmed[9],pribber,3);
218 z=pdiv2[2]-pribber[2];
219 gMC->Gspos("DRIB",1,"DIV2",0,0,z,0,"ONLY");
220 // printf("z DRIB %f\n",z);
221
222
223}
224//------------------------------------------------------------------------
225void AliSTARTv1::CreateMaterials()
226{
ef51244a 227 Int_t isxfld = gAlice->Field()->Integ();
228 Float_t sxmgmx = gAlice->Field()->Max();
bc46b572 229 Float_t a,z,d,radl,absl,buf[1];
230 Int_t nbuf;
231
232// Scintillator CH
233 Float_t ascin[2]={1.01,12.01};
234 Float_t zscin[2]={1,6};
235 Float_t wscin[2]={1,1};
236 Float_t denscin=1.03;
237// PMT glass SiO2
238 Float_t aglass[2]={28.0855,15.9994};
239 Float_t zglass[2]={14.,8.};
240 Float_t wglass[2]={1.,2.};
241 Float_t dglass=2.65;
242// Ceramic 97.2% Al2O3 , 2.8% SiO2
243 Float_t acer[2],zcer[2],wcer[2]={0.972,0.028};
244 Float_t aal2o3[2] = { 26.981539,15.9994 };
245 Float_t zal2o3[2] = { 13.,8. };
246 Float_t wal2o3[2] = { 2.,3. };
247 Float_t denscer = 3.6;
248
249// Brass 80% Cu, 20% Zn
250 Float_t abrass[2] = {63.546,65.39};
251 Float_t zbrass[2] = {29,30};
252 Float_t wbrass[2] = {0.8,0.2};
253 Float_t denbrass=8.96;
254
255//Ribber C6H12S
256 Float_t aribber[3] = {12.,1.,32.};
257 Float_t zribber[3] = {6.,1.,16.};
258 Float_t wribber[3] = {6.,12.,1.};
259 Float_t denribber=0.8;
260 /*
261// Definition Cherenkov parameters
262 Float_t ppckov[14] = { 5.63e-9,5.77e-9,5.9e-9,6.05e-9,6.2e-9,6.36e-9,6.52e-9,6.7e-9,6.88e-9,7.08e-9,7.3e-9,7.51e-9,7.74e-9,8e-9 };
263 Float_t rindex_quarz[14] = { 1.528309,1.533333,
264 1.538243,1.544223,1.550568,1.55777,
265 1.565463,1.574765,1.584831,1.597027,
266 1.611858,1.6277,1.6472,1.6724 };
267
268 Float_t absco_quarz[14] = { 20.126,16.27,13.49,11.728,9.224,8.38,7.44,7.17,
269 6.324,4.483,1.6,.323,.073,0. };
270 */
bc46b572 271
272//*** Definition Of avaible START materials ***
273 AliMaterial(0, "START Steel$", 55.850,26.,7.87,1.76,999);
274 AliMaterial(1, "START Vacuum$", 1.e-16,1.e-16,1.e-16,1.e16,999);
275 AliMaterial(2, "START Air$", 14.61, 7.3, .001205, 30423.,999);
276
277 AliMixture( 3, "Al2O3 $", aal2o3, zal2o3, denscer, -2, wal2o3);
278 AliMixture( 4, "PMT glass $",aglass,zglass,dglass,-2,wglass);
279 char namate[21];
280 gMC->Gfmate((*fIdmate)[3], namate, a, z, d, radl, absl, buf, nbuf);
281 acer[0]=a;
282 zcer[0]=z;
283 gMC->Gfmate((*fIdmate)[4], namate, a, z, d, radl, absl, buf, nbuf);
284 acer[1]=a;
285 zcer[1]=z;
286
287 AliMixture( 9, "Ceramic $", acer, zcer, denscer, 2, wcer);
288 AliMixture( 5, "Scintillator$",ascin,zscin,denscin,-2,wscin);
289 AliMixture( 6, "Brass $", abrass, zbrass, denbrass, 2, wbrass);
290
291 AliMixture( 7, "Ribber $",aribber,zribber,denribber,-3,wribber);
292
293
ef51244a 294 AliMedium(1, "START Air$", 2, 0, isxfld, sxmgmx, 10., .1, 1., .003, .003);
295 AliMedium(2, "Scintillator$", 5, 1, isxfld, sxmgmx, 10., .01, 1., .003, .003);
296 AliMedium(3, "Vacuum$", 1, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003);
297 AliMedium(4, "Ceramic$", 9, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003);
298 AliMedium(6, "Glass$", 4, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003);
299 AliMedium(8, "Steel$", 0, 0, isxfld, sxmgmx, 1., .001, 1., .001, .001);
300 AliMedium(9, "Ribber $", 7, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003);
301 AliMedium(11, "Brass $", 6, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003);
bc46b572 302 cout<<"++++++++++++++Medium set++++++++++"<<endl;
303
304// geant3->Gsckov(idtmed[2105], 14, ppckov, absco_quarz, effic_all,rindex_quarz);
305
306}
307//---------------------------------------------------------------------
308void AliSTARTv1::DrawDetector()
309{
310//
311// Draw a shaded view of the Forward multiplicity detector version 0
312//
313
314 //Set ALIC mother transparent
315 gMC->Gsatt("ALIC","SEEN",0);
316 //
317 //Set volumes visible
ef51244a 318 // gMC->Gsatt("STRT","SEEN",0);
319 gMC->Gsatt("INST","SEEN",0);
bc46b572 320 gMC->Gsatt("PMT ","SEEN",1);
321 gMC->Gsatt("DIVI","SEEN",1);
322 //
323 gMC->Gdopt("hide","on");
324 gMC->Gdopt("shad","on");
325 gMC->SetClipBox(".");
326 gMC->SetClipBox("*",0,1000,-1000,1000,-1000,1000);
327 gMC->DefaultRange();
328 gMC->Gdraw("alic",40,30,0,12,9.5,.7,0.7);
329 gMC->Gdhead(1111,"T-Zero detector");
330 gMC->Gdopt("hide","off");
331}
332
333//-------------------------------------------------------------------
334void AliSTARTv1::Init()
335{
336// Initialises version 0 of the Forward Multiplicity Detector
337//
338//Int_t *idtmed = gAlice->Idtmed();
339 AliSTART::Init();
340 fIdSens1=gMC->VolId("PTOP");
341 printf("*** START version 0 initialized ***\n");
342
343}
344
345//-------------------------------------------------------------------
346
347void AliSTARTv1::StepManager()
348{
349 //
350 // Called for every step in the START Detector
351 //
352 Int_t id,copy,copy1;
353 static Float_t hits[7];
354 static Float_t edep;
355 static Int_t vol[2];
356 TLorentzVector pos;
357
358 TClonesArray &lhits = *fHits;
359
360 if(!gMC->IsTrackAlive()) return; // particle has disappeared
361 Float_t charge = gMC->TrackCharge();
362 if(TMath::Abs(charge)<=0.) return; //take only charged particles
363 id=gMC->CurrentVolID(copy);
364
365
366 // printf("gMC->ckine->ipart %d",gMC->ckine->ipart);
367 // Check the sensetive volume
368 if(id==fIdSens1 ) {
369 if(gMC->IsTrackEntering()) {
370 gMC->CurrentVolOffID(2,copy);
371 vol[0]=copy;
372 gMC->CurrentVolOffID(1,copy1);
373 vol[1]=copy1;
374 gMC->TrackPosition(pos);
375 hits[0] = pos[0];
376 hits[1] = pos[1];
377 hits[2] = pos[2];
378 Float_t etot=gMC->Etot();
379 hits[4]=etot;
ef51244a 380 Int_t iPart= gMC->TrackPid();
381 Int_t partID=gMC->IdFromPDG(iPart);
382 hits[5]=partID;
bc46b572 383 Float_t ttime=gMC->TrackTime();
384 hits[6]=ttime*1e9;
385 edep=0;
386 }
387 if(gMC->IsTrackInside()) {
388 Float_t de=gMC->Edep();
389 edep=edep+de;
390 // printf ("E deposition %f\n",edep);
391 // for (i=0; i<=6; i++){
0cc62300 392 // printf(" HITS on START inside %f\n",hits[i]);
393 }
bc46b572 394 }
395 if(gMC->IsTrackExiting()) {
396 Float_t de=gMC->Edep();
397 edep=edep+de;
398 hits[3]=edep*1e3;
399 Int_t i;
400 for (i=0; i<=6; i++){
0cc62300 401 //printf(" HITS on START Exit %f\n",hits[i]); }
ef51244a 402 // for (i=0; i<=1; i++) { printf("START vol %d\n",vol[i]);}
bc46b572 403
404 new(lhits[fNhits++]) AliSTARThit(fIshunt,gAlice->CurrentTrack(),vol,hits);
405 }
406 }
407//---------------------------------------------------------------------
408}
409
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