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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
2ca99a7f 107 gMC->Gsvolu("0STA","TUBE",idtmed[1],pstart,3);
108 gMC->Gspos("0STA",1,"ALIC",0.,0.,zdet,0,"ONLY");
109 gMC->Gspos("0STA",2,"ALIC",0.,0.,-zdet,idrotm[901],"ONLY");
bc46b572 110
111//START interior
2ca99a7f 112 gMC->Gsvolu("0INS","TUBE",idtmed[1],pinstart,3);
113 gMC->Gsvolu("0PMT","TUBE",idtmed[3],ppmt,3);
114 gMC->Gsvolu("0DIV","TUBE",idtmed[3],pdivider,3);
bc46b572 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];
2ca99a7f 127 gMC->Gspos("0INS",is,"0STA",x,y,z,idrotm[901+is],"ONLY");
ef51244a 128
9436d88b 129 }
130 x=0;
131 y=0;
132 z=-pinstart[2]+ppmt[2];
9e1a0ddb 133 if(fDebug) printf("%s: is %d, z Divider %f\n",ClassName(),is,z);
9436d88b 134 gMC->Gspos("0PMT",1,"0INS",x,y,z,0,"ONLY");
135 z=pinstart[2]-pdivider[2];
136 gMC->Gspos("0DIV",1,"0INS",x,y,z,0,"ONLY");
137
bc46b572 138 /*
139//second ring: 20 units of Scintillator+PMT+divider
140 Double_t dang2 = 2*TMath::Pi()/26;
141 Double_t dang3 = 2*TMath::Pi()/20;
142 for (is=14; is<=33;is++)
143 {
144 x=9.3*TMath::Sin(dang2+(is-13)*dang3);
145 y=9.3*TMath::Cos(dang2+(is-13)*dang3);
146 z=-pstart[2]+ppmt[2];
2ca99a7f 147 gMC->Gspos("0PMT",is,"0STA",x,y,z,0,"ONLY");
bc46b572 148 z=z+ppmt[2]+pdiv2[2];
2ca99a7f 149 gMC->Gspos("0DIV",is,"0STA",x,y,z,0,"ONLY");
bc46b572 150 }
151 */
152// PMT
153
154 // Entry window (glass)
2ca99a7f 155 gMC->Gsvolu("0TOP","TUBE",idtmed[6],ptop,3);
bc46b572 156 z=-ppmt[2]+ptop[2];
2ca99a7f 157 gMC->Gspos("0TOP",1,"0PMT",0,0,z,0,"ONLY");
bc46b572 158 // printf("Z PTOP %f -ppmt[2] %f ptop[2] %f\n",z,-ppmt[2],ptop[2]);
159 // Bottom glass
2ca99a7f 160 gMC->Gsvolu("0BOT","TUBE",idtmed[6],pbot,3);
bc46b572 161 z=ppmt[2]-pbot[2];
9e1a0ddb 162 if(fDebug) printf("%s: Z bottom %f\n",ClassName(),z);
2ca99a7f 163 gMC->Gspos("0BOT",1,"0PMT",0,0,z,0,"ONLY");
bc46b572 164 // Side cylinder glass
2ca99a7f 165 gMC->Gsvolu("0OUT","TUBE",idtmed[6],pglass,3);
bc46b572 166 z=ppmt[2]-pglass[2];
167 // printf("Z glass %f\n",z);
2ca99a7f 168 gMC->Gspos("0OUT",1,"0PMT",0,0,z,0,"ONLY");
bc46b572 169 //PMT electrodes support structure
2ca99a7f 170 gMC->Gsvolu("0CER","TUBE",idtmed[4],pcer,3);
171 gMC->Gsvolu("0STE","TUBE",idtmed[8],psteel,3);
bc46b572 172 z=-ppmt[2]+2*ptop[2]+0.3;;
173 // printf("Z Cer 1 %f\n",z);
174 for (is=1; is<=15; is++)
175 {
176 z=z+psteel[2]+pcer[2];
2ca99a7f 177 gMC->Gspos("0CER",is,"0PMT",0,0,z,0,"ONLY");
bc46b572 178 z=z+psteel[2]+pcer[2];
2ca99a7f 179 gMC->Gspos("0STE",is,"0PMT",0,0,z,0,"ONLY");
bc46b572 180 }
181
182 // Divider
183 // Knob at the bottom of PMT baloon
184
2ca99a7f 185 gMC->Gsvolu("0NB","TUBE",idtmed[6],pknob,3);
bc46b572 186 z=-pdivider[2]+pknob[2];
187 // printf("zknob %f\n",z);
2ca99a7f 188 gMC->Gspos("0NB",1,"0DIV",0,0,z,0,"ONLY");
189 gMC->Gsvolu("0KB","TUBE",idtmed[6],pknob_bot,3);
bc46b572 190 z=-pdivider[2]+2*pknob[2]+pknob_bot[2];
2ca99a7f 191 // printf(knobbot %f\n",z);
192 gMC->Gspos("0KB",1,"0DIV ",0,0,z,0,"ONLY");
193 gMC->Gsvolu("0VAC","TUBE",idtmed[3],pknob_vac,3);
bc46b572 194 z=-pdivider[2]+pknob_vac[2];
195 // printf("knobvac %f\n",z);
2ca99a7f 196 gMC->Gspos("0VAC",1,"0DIV",0,0,z,0,"ONLY");
bc46b572 197 //Steel pins + pin holes
2ca99a7f 198 gMC->Gsvolu("0PIN","TUBE",idtmed[8],ppins,3);
bc46b572 199 z=-pdivider[2]+ppins[2];
2ca99a7f 200 gMC->Gspos("0PIN",1,"0DIV",0,0,z,0,"ONLY");
201 gMC->Gsvolu("0HOL","TUBE",idtmed[11],phole,3);
bc46b572 202 z=-pdivider[2]+2*ppins[2]+phole[2];
2ca99a7f 203 gMC->Gspos("0HOL",1,"0DIV",0,0,z,0,"ONLY");
bc46b572 204
205 //Socket
2ca99a7f 206 gMC->Gsvolu("0V1","TUBE",idtmed[4],pdiv1,3);
bc46b572 207 z=-pdivider[2]+pdiv1[2];
2ca99a7f 208 gMC->Gspos("0V1",1,"0DIV",0,0,z,0,"ONLY");
bc46b572 209 //Resistors
2ca99a7f 210 gMC->Gsvolu("0V2","TUBE",idtmed[1],pdiv2,3);
bc46b572 211 z=pdivider[2]-pdiv2[2];
2ca99a7f 212 gMC->Gspos("0V2",1,"0DIV",0,0,z,0,"ONLY");
213 gMC->Gsvolu("0RS","TUBE",idtmed[4],presist,3);
bc46b572 214 z=-pdiv2[2]+presist[2];
2ca99a7f 215 gMC->Gspos("0RS",1,"0V2",0,0,z,0,"ONLY");
216 gMC->Gsvolu("0RB","TUBE",idtmed[9],pribber,3);
bc46b572 217 z=pdiv2[2]-pribber[2];
2ca99a7f 218 gMC->Gspos("0RB",1,"0V2",0,0,z,0,"ONLY");
bc46b572 219 // printf("z DRIB %f\n",z);
220
221
222}
223//------------------------------------------------------------------------
224void AliSTARTv1::CreateMaterials()
225{
ef51244a 226 Int_t isxfld = gAlice->Field()->Integ();
227 Float_t sxmgmx = gAlice->Field()->Max();
bc46b572 228 Float_t a,z,d,radl,absl,buf[1];
229 Int_t nbuf;
230
231// Scintillator CH
232 Float_t ascin[2]={1.01,12.01};
233 Float_t zscin[2]={1,6};
234 Float_t wscin[2]={1,1};
235 Float_t denscin=1.03;
236// PMT glass SiO2
237 Float_t aglass[2]={28.0855,15.9994};
238 Float_t zglass[2]={14.,8.};
239 Float_t wglass[2]={1.,2.};
240 Float_t dglass=2.65;
241// Ceramic 97.2% Al2O3 , 2.8% SiO2
242 Float_t acer[2],zcer[2],wcer[2]={0.972,0.028};
243 Float_t aal2o3[2] = { 26.981539,15.9994 };
244 Float_t zal2o3[2] = { 13.,8. };
245 Float_t wal2o3[2] = { 2.,3. };
246 Float_t denscer = 3.6;
247
248// Brass 80% Cu, 20% Zn
249 Float_t abrass[2] = {63.546,65.39};
250 Float_t zbrass[2] = {29,30};
251 Float_t wbrass[2] = {0.8,0.2};
252 Float_t denbrass=8.96;
253
254//Ribber C6H12S
255 Float_t aribber[3] = {12.,1.,32.};
256 Float_t zribber[3] = {6.,1.,16.};
257 Float_t wribber[3] = {6.,12.,1.};
258 Float_t denribber=0.8;
259 /*
260// Definition Cherenkov parameters
261 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 };
262 Float_t rindex_quarz[14] = { 1.528309,1.533333,
263 1.538243,1.544223,1.550568,1.55777,
264 1.565463,1.574765,1.584831,1.597027,
265 1.611858,1.6277,1.6472,1.6724 };
266
267 Float_t absco_quarz[14] = { 20.126,16.27,13.49,11.728,9.224,8.38,7.44,7.17,
268 6.324,4.483,1.6,.323,.073,0. };
269 */
bc46b572 270
271//*** Definition Of avaible START materials ***
272 AliMaterial(0, "START Steel$", 55.850,26.,7.87,1.76,999);
273 AliMaterial(1, "START Vacuum$", 1.e-16,1.e-16,1.e-16,1.e16,999);
274 AliMaterial(2, "START Air$", 14.61, 7.3, .001205, 30423.,999);
275
276 AliMixture( 3, "Al2O3 $", aal2o3, zal2o3, denscer, -2, wal2o3);
277 AliMixture( 4, "PMT glass $",aglass,zglass,dglass,-2,wglass);
278 char namate[21];
279 gMC->Gfmate((*fIdmate)[3], namate, a, z, d, radl, absl, buf, nbuf);
280 acer[0]=a;
281 zcer[0]=z;
282 gMC->Gfmate((*fIdmate)[4], namate, a, z, d, radl, absl, buf, nbuf);
283 acer[1]=a;
284 zcer[1]=z;
285
286 AliMixture( 9, "Ceramic $", acer, zcer, denscer, 2, wcer);
287 AliMixture( 5, "Scintillator$",ascin,zscin,denscin,-2,wscin);
288 AliMixture( 6, "Brass $", abrass, zbrass, denbrass, 2, wbrass);
289
290 AliMixture( 7, "Ribber $",aribber,zribber,denribber,-3,wribber);
291
292
ef51244a 293 AliMedium(1, "START Air$", 2, 0, isxfld, sxmgmx, 10., .1, 1., .003, .003);
294 AliMedium(2, "Scintillator$", 5, 1, isxfld, sxmgmx, 10., .01, 1., .003, .003);
295 AliMedium(3, "Vacuum$", 1, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003);
296 AliMedium(4, "Ceramic$", 9, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003);
297 AliMedium(6, "Glass$", 4, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003);
298 AliMedium(8, "Steel$", 0, 0, isxfld, sxmgmx, 1., .001, 1., .001, .001);
299 AliMedium(9, "Ribber $", 7, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003);
300 AliMedium(11, "Brass $", 6, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003);
9e1a0ddb 301 if(fDebug) cout<<ClassName()<<": ++++++++++++++Medium set++++++++++"<<endl;
bc46b572 302
303// geant3->Gsckov(idtmed[2105], 14, ppckov, absco_quarz, effic_all,rindex_quarz);
304
305}
306//---------------------------------------------------------------------
307void AliSTARTv1::DrawDetector()
308{
309//
310// Draw a shaded view of the Forward multiplicity detector version 0
311//
312
313 //Set ALIC mother transparent
314 gMC->Gsatt("ALIC","SEEN",0);
315 //
316 //Set volumes visible
2ca99a7f 317 // gMC->Gsatt("0ST","SEEN",0);
318 gMC->Gsatt("0INS","SEEN",0);
319 gMC->Gsatt("0PMT","SEEN",1);
320 gMC->Gsatt("0DIV","SEEN",1);
bc46b572 321 //
322 gMC->Gdopt("hide","on");
323 gMC->Gdopt("shad","on");
324 gMC->SetClipBox(".");
325 gMC->SetClipBox("*",0,1000,-1000,1000,-1000,1000);
326 gMC->DefaultRange();
327 gMC->Gdraw("alic",40,30,0,12,9.5,.7,0.7);
328 gMC->Gdhead(1111,"T-Zero detector");
329 gMC->Gdopt("hide","off");
330}
331
332//-------------------------------------------------------------------
333void AliSTARTv1::Init()
334{
335// Initialises version 0 of the Forward Multiplicity Detector
336//
337//Int_t *idtmed = gAlice->Idtmed();
338 AliSTART::Init();
2ca99a7f 339 fIdSens1=gMC->VolId("0TOP");
9e1a0ddb 340 if(fDebug) printf("%s: *** START version 0 initialized ***\n",ClassName());
bc46b572 341
342}
343
344//-------------------------------------------------------------------
345
346void AliSTARTv1::StepManager()
347{
348 //
349 // Called for every step in the START Detector
350 //
351 Int_t id,copy,copy1;
352 static Float_t hits[7];
353 static Float_t edep;
354 static Int_t vol[2];
355 TLorentzVector pos;
356
357 TClonesArray &lhits = *fHits;
358
359 if(!gMC->IsTrackAlive()) return; // particle has disappeared
360 Float_t charge = gMC->TrackCharge();
361 if(TMath::Abs(charge)<=0.) return; //take only charged particles
362 id=gMC->CurrentVolID(copy);
363
364
365 // printf("gMC->ckine->ipart %d",gMC->ckine->ipart);
366 // Check the sensetive volume
367 if(id==fIdSens1 ) {
368 if(gMC->IsTrackEntering()) {
369 gMC->CurrentVolOffID(2,copy);
2ca99a7f 370 vol[1]=copy;
371 gMC->CurrentVolOffID(3,copy1);
372 vol[0]=copy1;
bc46b572 373 gMC->TrackPosition(pos);
374 hits[0] = pos[0];
375 hits[1] = pos[1];
376 hits[2] = pos[2];
377 Float_t etot=gMC->Etot();
378 hits[4]=etot;
ef51244a 379 Int_t iPart= gMC->TrackPid();
380 Int_t partID=gMC->IdFromPDG(iPart);
381 hits[5]=partID;
bc46b572 382 Float_t ttime=gMC->TrackTime();
383 hits[6]=ttime*1e9;
384 edep=0;
385 }
386 if(gMC->IsTrackInside()) {
387 Float_t de=gMC->Edep();
388 edep=edep+de;
f3ed336b 389 }
390 }
391 if(gMC->IsTrackExiting()) {
392 Float_t de=gMC->Edep();
393 edep=edep+de;
394 hits[3]=edep*1e3;
395 new(lhits[fNhits++]) AliSTARThit(fIshunt,gAlice->CurrentTrack(),vol,hits);
bc46b572 396 }
397//---------------------------------------------------------------------
398}
399
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