Asimmetric START geometry
[u/mrichter/AliRoot.git] / START / AliSTARTv0.cxx
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4c039060 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$Log$
a94466c5 18Revision 1.12 2001/04/25 14:09:34 alla
19Curent bur fixed
20
9436d88b 21Revision 1.11 2001/04/04 12:10:18 alla
22changes according Coding Convension
23
2ca99a7f 24Revision 1.10 2000/12/04 08:48:19 alibrary
25Fixing problems in the HEAD
26
0cc62300 27Revision 1.9 2000/10/02 21:28:13 fca
28Removal of useless dependecies via forward declarations
29
94de3818 30Revision 1.8 2000/07/13 16:41:29 fca
31New START corrected for coding conventions
32
ef51244a 33Revision 1.7 2000/01/21 15:45:23 fca
34New Version from Alla
35
971579f6 36Revision 1.6 1999/11/12 15:04:00 fca
37Modifications from A.Maevskaya
38
82fc3fb3 39Revision 1.5 1999/09/29 09:24:29 fca
40Introduction of the Copyright and cvs Log
41
971579f6 42*/
4c039060 43
6ca40650 44/////////////////////////////////////////////////////////////////////
45// //
46// START ( T-zero) detector version 0 //
47//
48//Begin Html
49/*
50<img src="gif/AliSTARTv0Class.gif">
51*/
52//End Html
53// //
54// //
55//////////////////////////////////////////////////////////////////////
56
57#include <TMath.h>
58#include <TGeometry.h>
59#include <TTUBE.h>
60#include <TNode.h>
0cc62300 61#include <TLorentzVector.h>
6ca40650 62
63#include "AliSTARTv0.h"
64#include "AliRun.h"
65#include "AliMC.h"
94de3818 66#include "AliMagF.h"
971579f6 67#include "AliSTARThit.h"
6ca40650 68
69#include <iostream.h>
70#include <fstream.h>
71
72//#include "TGeant3.h"
73#include <stdlib.h>
74
75ClassImp(AliSTARTv0)
76
77//--------------------------------------------------------------------
78AliSTARTv0::AliSTARTv0(const char *name, const char *title):
79 AliSTART(name,title)
80{
81 //
82 // Standart constructor for START Detector version 0
83 //
84 fIdSens1=0;
85// setBufferSize(128000);
86}
87//-------------------------------------------------------------------------
88void AliSTARTv0::CreateGeometry()
89{
90 //
91 // Create the geometry of START Detector version 0
92 //
93 // begin Html
94 /*
95 <img src="gif/AliSTARTv0.gif">
96 */
97 //
98
99
971579f6 100 Int_t *idtmed = fIdtmed->GetArray();
a94466c5 101
6ca40650 102 Int_t is;
103 Int_t idrotm[999];
104 Float_t x,y,z;
105
106 Float_t pstart[3]={4.5,10.7,5.3};
a94466c5 107 Float_t pinstart[3]={0.,1.3,5.25};
6ca40650 108 Float_t ppmt[3]={0.,1.3,3.5};
109 Float_t pdivider[3]={0.,1.2,1.75};
110 Float_t pdiv2[3]={0.,1.2,1.25};
111 Float_t pdiv1[3]={0.6,1.2,0.5};
112 Float_t ptop[3]={0.,1.3,1.5};
113 Float_t pbot[3]={0.6,1.2,0.1};
114 Float_t pglass[3]={1.2,1.3,2.};
115 Float_t pcer[3]={0.9,1.1,0.09};
116 Float_t psteel[3]={0.9,1.1,0.01};
117 Float_t ppins[3]={0.6,1.2,0.014};
118 Float_t phole[3]={0.6,1.2,0.015};
119 Float_t pknob[3]={0.5,0.6,0.4};
120 Float_t pknob_vac[3]={0.,0.5,0.4};
121 Float_t pknob_bot[3]={0.,0.6,0.05};
122 Float_t pribber[3] = {0.,1.2,2.413/2.};
123 Float_t presist[3] = {0.,1.2,0.087/2.};
124
a94466c5 125 Float_t zdetRight=69.7,zdetLeft=350;
6ca40650 126 //-------------------------------------------------------------------
127 // START volume
128 //-------------------------------------------------------------------
971579f6 129
a94466c5 130 // Float_t theta=TMath::ATan(6.5/zdet);
131 Float_t thetaRight=(180./3.1415)*TMath::ATan(6.5/zdetRight);
132 Float_t thetaLeft=(180./3.1415)*TMath::ATan(6.5/zdetLeft);
6ca40650 133 AliMatrix(idrotm[901], 90., 0., 90., 90., 180., 0.);
a94466c5 134
135 gMC->Gsvolu("0STR","TUBE",idtmed[1],pstart,3);
136 gMC->Gsvolu("0STL","TUBE",idtmed[1],pstart,3);
137 gMC->Gspos("0STR",1,"ALIC",0.,0.,zdetRight+pstart[2],0,"ONLY");
138 gMC->Gspos("0STL",1,"ALIC",0.,0.,-zdetLeft-pstart[2],idrotm[901],"ONLY");
6ca40650 139
140//START interior
a94466c5 141 gMC->Gsvolu("0INS","TUBE",idtmed[1],pinstart,3);
2ca99a7f 142 gMC->Gsvolu("0PMT","TUBE",idtmed[3],ppmt,3);
143 gMC->Gsvolu("0DIV","TUBE",idtmed[3],pdivider,3);
6ca40650 144
ef51244a 145// first ring: 12 units of Scintillator+PMT+divider
971579f6 146 Double_t dang1 = 2*TMath::Pi()/12;
147 for (is=1; is<=12; is++)
148 {
a94466c5 149 AliMatrix(idrotm[901+is],
150 90.-thetaRight, 30.*is,
151 90., 90.+30.*is,
152 thetaRight, 180.+30.*is);
971579f6 153 x=6.5*TMath::Sin(is*dang1);
154 y=6.5*TMath::Cos(is*dang1);
a94466c5 155 z=-pstart[2]+pinstart[2];
156 gMC->Gspos("0INS",is,"0STR",x,y,z,idrotm[901+is],"ONLY");
157
158 }
159 for (is=1; is<=12; is++)
160 {
161 AliMatrix(idrotm[901+is],
162 90.-thetaLeft, 30.*is,
163 90., 90.+30.*is,
164 thetaLeft, 180.+30.*is);
165
166 x=6.5*TMath::Sin(is*dang1);
167 y=6.5*TMath::Cos(is*dang1);
168 z=-pstart[2]+pinstart[2];
169 gMC->Gspos("0INS",is,"0STL",x,y,z,idrotm[901+is],"ONLY");
170
971579f6 171 }
a94466c5 172 x=0;
173 y=0;
174 z=-pinstart[2]+ppmt[2];
175 if(fDebug) printf("%s: is %d, z Divider %f\n",ClassName(),is,z);
176 gMC->Gspos("0PMT",1,"0INS",x,y,z,0,"ONLY");
177 z=pinstart[2]-pdivider[2];
178 gMC->Gspos("0DIV",1,"0INS",x,y,z,0,"ONLY");
179
971579f6 180 /*
6ca40650 181//second ring: 20 units of Scintillator+PMT+divider
971579f6 182 Double_t dang2 = 2*TMath::Pi()/26;
183 Double_t dang3 = 2*TMath::Pi()/20;
184 for (is=14; is<=33;is++)
185 {
186 x=9.3*TMath::Sin(dang2+(is-13)*dang3);
187 y=9.3*TMath::Cos(dang2+(is-13)*dang3);
6ca40650 188 z=-pstart[2]+ppmt[2];
a94466c5 189 gMC->Gspos("0PMT",is,"0STA",x,y,z,0,"ONLY");
971579f6 190 z=z+ppmt[2]+pdiv2[2];
a94466c5 191 gMC->Gspos("0DIV",is,"0STA",x,y,z,0,"ONLY");
971579f6 192 }
193 */
6ca40650 194// PMT
195
971579f6 196 // Entry window (glass)
a94466c5 197 // gMC->Gsvolu("0TOP","TUBE",idtmed[6],ptop,3);
198 gMC->Gsvolu("0TOP","TUBE",idtmed[12],ptop,3); //lucite
199 z=-ppmt[2]+ptop[2];
2ca99a7f 200 gMC->Gspos("0TOP",1,"0PMT",0,0,z,0,"ONLY");
971579f6 201 // printf("Z PTOP %f -ppmt[2] %f ptop[2] %f\n",z,-ppmt[2],ptop[2]);
a94466c5 202
971579f6 203 // Bottom glass
a94466c5 204 gMC->Gsvolu("0BOT","TUBE",idtmed[6],pbot,3);
971579f6 205 z=ppmt[2]-pbot[2];
a94466c5 206 if(fDebug) printf("%s: Z bottom %f\n",ClassName(),z);
207 gMC->Gspos("0BOT",1,"0PMT",0,0,z,0,"ONLY");
971579f6 208 // Side cylinder glass
a94466c5 209 gMC->Gsvolu("0OUT","TUBE",idtmed[6],pglass,3);
971579f6 210 z=ppmt[2]-pglass[2];
211 // printf("Z glass %f\n",z);
a94466c5 212 gMC->Gspos("0OUT",1,"0PMT",0,0,z,0,"ONLY");
971579f6 213 //PMT electrodes support structure
a94466c5 214 gMC->Gsvolu("0CER","TUBE",idtmed[4],pcer,3);
215 gMC->Gsvolu("0STE","TUBE",idtmed[8],psteel,3);
971579f6 216 z=-ppmt[2]+2*ptop[2]+0.3;;
217 // printf("Z Cer 1 %f\n",z);
218 for (is=1; is<=15; is++)
6ca40650 219 {
971579f6 220 z=z+psteel[2]+pcer[2];
a94466c5 221 gMC->Gspos("0CER",is,"0PMT",0,0,z,0,"ONLY");
971579f6 222 z=z+psteel[2]+pcer[2];
a94466c5 223 gMC->Gspos("0STE",is,"0PMT",0,0,z,0,"ONLY");
971579f6 224 }
225
226 // Divider
227 // Knob at the bottom of PMT baloon
228
a94466c5 229 gMC->Gsvolu("0NB","TUBE",idtmed[6],pknob,3);
971579f6 230 z=-pdivider[2]+pknob[2];
231 // printf("zknob %f\n",z);
a94466c5 232 gMC->Gspos("0NB",1,"0DIV",0,0,z,0,"ONLY");
2ca99a7f 233 gMC->Gsvolu("0KB","TUBE",idtmed[6],pknob_bot,3);
971579f6 234 z=-pdivider[2]+2*pknob[2]+pknob_bot[2];
a94466c5 235 // printf(knobbot %f\n",z);
236 gMC->Gspos("0KB",1,"0DIV ",0,0,z,0,"ONLY");
237 gMC->Gsvolu("0VAC","TUBE",idtmed[3],pknob_vac,3);
971579f6 238 z=-pdivider[2]+pknob_vac[2];
239 // printf("knobvac %f\n",z);
a94466c5 240 gMC->Gspos("0VAC",1,"0DIV",0,0,z,0,"ONLY");
971579f6 241 //Steel pins + pin holes
a94466c5 242 gMC->Gsvolu("0PIN","TUBE",idtmed[8],ppins,3);
971579f6 243 z=-pdivider[2]+ppins[2];
a94466c5 244 gMC->Gspos("0PIN",1,"0DIV",0,0,z,0,"ONLY");
245 gMC->Gsvolu("0HOL","TUBE",idtmed[11],phole,3);
971579f6 246 z=-pdivider[2]+2*ppins[2]+phole[2];
a94466c5 247 gMC->Gspos("0HOL",1,"0DIV",0,0,z,0,"ONLY");
971579f6 248
249 //Socket
2ca99a7f 250 gMC->Gsvolu("0V1","TUBE",idtmed[4],pdiv1,3);
971579f6 251 z=-pdivider[2]+pdiv1[2];
2ca99a7f 252 gMC->Gspos("0V1",1,"0DIV",0,0,z,0,"ONLY");
971579f6 253 //Resistors
2ca99a7f 254 gMC->Gsvolu("0V2","TUBE",idtmed[1],pdiv2,3);
971579f6 255 z=pdivider[2]-pdiv2[2];
2ca99a7f 256 gMC->Gspos("0V2",1,"0DIV",0,0,z,0,"ONLY");
a94466c5 257 gMC->Gsvolu("0RS","TUBE",idtmed[4],presist,3);
971579f6 258 z=-pdiv2[2]+presist[2];
a94466c5 259 gMC->Gspos("0RS",1,"0V2",0,0,z,0,"ONLY");
2ca99a7f 260 gMC->Gsvolu("0RB","TUBE",idtmed[9],pribber,3);
971579f6 261 z=pdiv2[2]-pribber[2];
2ca99a7f 262 gMC->Gspos("0RB",1,"0V2",0,0,z,0,"ONLY");
971579f6 263 // printf("z DRIB %f\n",z);
a94466c5 264
971579f6 265
6ca40650 266}
a94466c5 267
268
269
270
6ca40650 271//------------------------------------------------------------------------
272void AliSTARTv0::CreateMaterials()
273{
ef51244a 274 Int_t isxfld = gAlice->Field()->Integ();
275 Float_t sxmgmx = gAlice->Field()->Max();
6ca40650 276 Float_t a,z,d,radl,absl,buf[1];
277 Int_t nbuf;
278
279// Scintillator CH
82fc3fb3 280 Float_t ascin[2]={1.01,12.01};
281 Float_t zscin[2]={1,6};
282 Float_t wscin[2]={1,1};
283 Float_t denscin=1.03;
6ca40650 284// PMT glass SiO2
971579f6 285 Float_t aglass[2]={28.0855,15.9994};
286 Float_t zglass[2]={14.,8.};
287 Float_t wglass[2]={1.,2.};
288 Float_t dglass=2.65;
6ca40650 289// Ceramic 97.2% Al2O3 , 2.8% SiO2
971579f6 290 Float_t acer[2],zcer[2],wcer[2]={0.972,0.028};
291 Float_t aal2o3[2] = { 26.981539,15.9994 };
292 Float_t zal2o3[2] = { 13.,8. };
293 Float_t wal2o3[2] = { 2.,3. };
294 Float_t denscer = 3.6;
6ca40650 295
296// Brass 80% Cu, 20% Zn
297 Float_t abrass[2] = {63.546,65.39};
298 Float_t zbrass[2] = {29,30};
299 Float_t wbrass[2] = {0.8,0.2};
300 Float_t denbrass=8.96;
301
302//Ribber C6H12S
303 Float_t aribber[3] = {12.,1.,32.};
304 Float_t zribber[3] = {6.,1.,16.};
305 Float_t wribber[3] = {6.,12.,1.};
306 Float_t denribber=0.8;
971579f6 307 /*
308// Definition Cherenkov parameters
309 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 };
310 Float_t rindex_quarz[14] = { 1.528309,1.533333,
311 1.538243,1.544223,1.550568,1.55777,
312 1.565463,1.574765,1.584831,1.597027,
313 1.611858,1.6277,1.6472,1.6724 };
6ca40650 314
971579f6 315 Float_t absco_quarz[14] = { 20.126,16.27,13.49,11.728,9.224,8.38,7.44,7.17,
316 6.324,4.483,1.6,.323,.073,0. };
317 */
318 // Int_t *idtmed = fIdtmed->GetArray()-999;
319
320 // TGeant3 *geant3 = (TGeant3*) gMC;
321
6ca40650 322//*** Definition Of avaible START materials ***
971579f6 323 AliMaterial(0, "START Steel$", 55.850,26.,7.87,1.76,999);
324 AliMaterial(1, "START Vacuum$", 1.e-16,1.e-16,1.e-16,1.e16,999);
325 AliMaterial(2, "START Air$", 14.61, 7.3, .001205, 30423.,999);
326
327 AliMixture( 3, "Al2O3 $", aal2o3, zal2o3, denscer, -2, wal2o3);
328 AliMixture( 4, "PMT glass $",aglass,zglass,dglass,-2,wglass);
329 char namate[21];
330 gMC->Gfmate((*fIdmate)[3], namate, a, z, d, radl, absl, buf, nbuf);
331 acer[0]=a;
332 zcer[0]=z;
333 gMC->Gfmate((*fIdmate)[4], namate, a, z, d, radl, absl, buf, nbuf);
334 acer[1]=a;
335 zcer[1]=z;
336
337 AliMixture( 9, "Ceramic $", acer, zcer, denscer, 2, wcer);
338 AliMixture( 5, "Scintillator$",ascin,zscin,denscin,-2,wscin);
339 AliMixture( 6, "Brass $", abrass, zbrass, denbrass, 2, wbrass);
340
341 AliMixture( 7, "Ribber $",aribber,zribber,denribber,-3,wribber);
342
343
ef51244a 344 AliMedium(1, "START Air$", 2, 0, isxfld, sxmgmx, 10., .1, 1., .003, .003);
345 AliMedium(2, "Scintillator$", 5, 1, isxfld, sxmgmx, 10., .01, 1., .003, .003);
346 AliMedium(3, "Vacuum$", 1, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003);
347 AliMedium(4, "Ceramic$", 9, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003);
348 AliMedium(6, "Glass$", 4, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003);
349 AliMedium(8, "Steel$", 0, 0, isxfld, sxmgmx, 1., .001, 1., .001, .001);
350 AliMedium(11, "Brass $", 6, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003);
351 AliMedium(9, "Ribber $", 7, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003);
6ca40650 352
971579f6 353// geant3->Gsckov(idtmed[2105], 14, ppckov, absco_quarz, effic_all,rindex_quarz);
6ca40650 354
355}
356//---------------------------------------------------------------------
77ee006c 357void AliSTARTv0::DrawModule()
6ca40650 358{
359//
360// Draw a shaded view of the Forward multiplicity detector version 0
361//
971579f6 362
363 //Set ALIC mother transparent
364 gMC->Gsatt("ALIC","SEEN",0);
365 //
366 //Set volumes visible
2ca99a7f 367 gMC->Gsatt("0STA","SEEN",0);
368 gMC->Gsatt("0PMT","SEEN",1);
369 gMC->Gsatt("0DIV","SEEN",1);
971579f6 370 //
371 gMC->Gdopt("hide","on");
372 gMC->Gdopt("shad","on");
373 gMC->SetClipBox(".");
374 gMC->SetClipBox("*",0,1000,-1000,1000,-1000,1000);
375 gMC->DefaultRange();
376 gMC->Gdraw("alic",40,30,0,12,9.5,.7,0.7);
377 gMC->Gdhead(1111,"T-Zero detector");
378 gMC->Gdopt("hide","off");
6ca40650 379}
971579f6 380
6ca40650 381//-------------------------------------------------------------------
382void AliSTARTv0::Init()
383{
971579f6 384// Initialises version 0 of the Forward Multiplicity Detector
385//
386//Int_t *idtmed = gAlice->Idtmed();
ca7295b2 387 AliSTART::Init();
2ca99a7f 388 fIdSens1=gMC->VolId("0TOP");
ca7295b2 389 printf("*** START version 0 initialized ***\n");
6ca40650 390
391}
392
393//-------------------------------------------------------------------
394
395void AliSTARTv0::StepManager()
396{
397 //
398 // Called for every step in the START Detector
a94466c5 399 // See AliSTARTv1
400
971579f6 401}
a94466c5 402//---------------------------------------------------------------------
403
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