/**************************************************************************
* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
* *
* Author: The ALICE Off-line Project. *
* Contributors are mentioned in the code where appropriate. *
* *
* Permission to use, copy, modify and distribute this software and its *
* documentation strictly for non-commercial purposes is hereby granted *
* without fee, provided that the above copyright notice appears in all *
* copies and that both the copyright notice and this permission notice *
* appear in the supporting documentation. The authors make no claims *
* about the suitability of this software for any purpose. It is *
* provided "as is" without express or implied warranty. *
**************************************************************************/
/////////////////////////////////////////////////////////////////////
// //
// START ( T-zero) detector version 1 //
//
//Begin Html
/*
*/
//End Html
// //
// //
//////////////////////////////////////////////////////////////////////
#include
#include
#include
#include
#include
#include "AliSTARTv1.h"
#include "AliRun.h"
#include "AliMC.h"
#include "AliMagF.h"
#include "AliSTARThit.h"
#include
#include
//#include "TGeant3.h"
#include
ClassImp(AliSTARTv1)
//--------------------------------------------------------------------
AliSTARTv1::AliSTARTv1(const char *name, const char *title):
AliSTART(name,title)
{
//
// Standart constructor for START Detector version 0
//
fIdSens1=0;
// setBufferSize(128000);
}
//-------------------------------------------------------------------------
void AliSTARTv1::CreateGeometry()
{
//
// Create the geometry of START Detector version 0
//
// begin Html
/*
*/
//
Int_t *idtmed = fIdtmed->GetArray();
Int_t is;
Int_t idrotm[999];
Float_t x,y,z;
Float_t pstart[3]={4.5,10.7,5.3};
Float_t pinstart[3]={0.,1.3,5.25};
Float_t ppmt[3]={0.,1.3,3.5};
Float_t pdivider[3]={0.,1.2,1.75};
Float_t pdiv2[3]={0.,1.2,1.25};
Float_t pdiv1[3]={0.6,1.2,0.5};
Float_t ptop[3]={0.,1.3,1.5};
Float_t pbot[3]={0.6,1.2,0.1};
Float_t pglass[3]={1.2,1.3,2.};
Float_t pcer[3]={0.9,1.1,0.09};
Float_t psteel[3]={0.9,1.1,0.01};
Float_t ppins[3]={0.6,1.2,0.014};
Float_t phole[3]={0.6,1.2,0.015};
Float_t pknob[3]={0.5,0.6,0.4};
Float_t pknob_vac[3]={0.,0.5,0.4};
Float_t pknob_bot[3]={0.,0.6,0.05};
Float_t pribber[3] = {0.,1.2,2.413/2.};
Float_t presist[3] = {0.,1.2,0.087/2.};
Float_t zdetRight=69.7,zdetLeft=350;
//-------------------------------------------------------------------
// START volume
//-------------------------------------------------------------------
// Float_t theta=TMath::ATan(6.5/zdet);
Float_t thetaRight=(180./3.1415)*TMath::ATan(6.5/zdetRight);
Float_t thetaLeft=(180./3.1415)*TMath::ATan(6.5/zdetLeft);
AliMatrix(idrotm[901], 90., 0., 90., 90., 180., 0.);
gMC->Gsvolu("0STR","TUBE",idtmed[1],pstart,3);
gMC->Gsvolu("0STL","TUBE",idtmed[1],pstart,3);
gMC->Gspos("0STR",1,"ALIC",0.,0.,zdetRight+pstart[2],0,"ONLY");
gMC->Gspos("0STL",1,"ALIC",0.,0.,-zdetLeft-pstart[2],idrotm[901],"ONLY");
//START interior
gMC->Gsvolu("0INS","TUBE",idtmed[1],pinstart,3);
gMC->Gsvolu("0PMT","TUBE",idtmed[3],ppmt,3);
gMC->Gsvolu("0DIV","TUBE",idtmed[3],pdivider,3);
// first ring: 12 units of Scintillator+PMT+divider
Double_t dang1 = 2*TMath::Pi()/12;
for (is=1; is<=12; is++)
{
AliMatrix(idrotm[901+is],
90.-thetaRight, 30.*is,
90., 90.+30.*is,
thetaRight, 180.+30.*is);
x=6.5*TMath::Sin(is*dang1);
y=6.5*TMath::Cos(is*dang1);
z=-pstart[2]+pinstart[2];
gMC->Gspos("0INS",is,"0STR",x,y,z,idrotm[901+is],"ONLY");
}
for (is=1; is<=12; is++)
{
AliMatrix(idrotm[901+is],
90.-thetaLeft, 30.*is,
90., 90.+30.*is,
thetaLeft, 180.+30.*is);
x=6.5*TMath::Sin(is*dang1);
y=6.5*TMath::Cos(is*dang1);
z=-pstart[2]+pinstart[2];
gMC->Gspos("0INS",is,"0STL",x,y,z,idrotm[901+is],"ONLY");
}
x=0;
y=0;
z=-pinstart[2]+ppmt[2];
if(fDebug) printf("%s: is %d, z Divider %f\n",ClassName(),is,z);
gMC->Gspos("0PMT",1,"0INS",x,y,z,0,"ONLY");
z=pinstart[2]-pdivider[2];
gMC->Gspos("0DIV",1,"0INS",x,y,z,0,"ONLY");
/*
//second ring: 20 units of Scintillator+PMT+divider
Double_t dang2 = 2*TMath::Pi()/26;
Double_t dang3 = 2*TMath::Pi()/20;
for (is=14; is<=33;is++)
{
x=9.3*TMath::Sin(dang2+(is-13)*dang3);
y=9.3*TMath::Cos(dang2+(is-13)*dang3);
z=-pstart[2]+ppmt[2];
gMC->Gspos("0PMT",is,"0STA",x,y,z,0,"ONLY");
z=z+ppmt[2]+pdiv2[2];
gMC->Gspos("0DIV",is,"0STA",x,y,z,0,"ONLY");
}
*/
// PMT
// Entry window (glass)
gMC->Gsvolu("0TOP","TUBE",idtmed[6],ptop,3); //glass
// gMC->Gsvolu("0TOP","TUBE",idtmed[12],ptop,3); //lucite
z=-ppmt[2]+ptop[2];
gMC->Gspos("0TOP",1,"0PMT",0,0,z,0,"ONLY");
// printf("Z PTOP %f -ppmt[2] %f ptop[2] %f\n",z,-ppmt[2],ptop[2]);
// Bottom glass
gMC->Gsvolu("0BOT","TUBE",idtmed[6],pbot,3);
z=ppmt[2]-pbot[2];
if(fDebug) printf("%s: Z bottom %f\n",ClassName(),z);
gMC->Gspos("0BOT",1,"0PMT",0,0,z,0,"ONLY");
// Side cylinder glass
gMC->Gsvolu("0OUT","TUBE",idtmed[6],pglass,3);
z=ppmt[2]-pglass[2];
// printf("Z glass %f\n",z);
gMC->Gspos("0OUT",1,"0PMT",0,0,z,0,"ONLY");
//PMT electrodes support structure
gMC->Gsvolu("0CER","TUBE",idtmed[4],pcer,3);
gMC->Gsvolu("0STE","TUBE",idtmed[8],psteel,3);
z=-ppmt[2]+2*ptop[2]+0.3;;
// printf("Z Cer 1 %f\n",z);
for (is=1; is<=15; is++)
{
z=z+psteel[2]+pcer[2];
gMC->Gspos("0CER",is,"0PMT",0,0,z,0,"ONLY");
z=z+psteel[2]+pcer[2];
gMC->Gspos("0STE",is,"0PMT",0,0,z,0,"ONLY");
}
// Divider
// Knob at the bottom of PMT baloon
gMC->Gsvolu("0NB","TUBE",idtmed[6],pknob,3);
z=-pdivider[2]+pknob[2];
// printf("zknob %f\n",z);
gMC->Gspos("0NB",1,"0DIV",0,0,z,0,"ONLY");
gMC->Gsvolu("0KB","TUBE",idtmed[6],pknob_bot,3);
z=-pdivider[2]+2*pknob[2]+pknob_bot[2];
// printf(knobbot %f\n",z);
gMC->Gspos("0KB",1,"0DIV ",0,0,z,0,"ONLY");
gMC->Gsvolu("0VAC","TUBE",idtmed[3],pknob_vac,3);
z=-pdivider[2]+pknob_vac[2];
// printf("knobvac %f\n",z);
gMC->Gspos("0VAC",1,"0DIV",0,0,z,0,"ONLY");
//Steel pins + pin holes
gMC->Gsvolu("0PIN","TUBE",idtmed[8],ppins,3);
z=-pdivider[2]+ppins[2];
gMC->Gspos("0PIN",1,"0DIV",0,0,z,0,"ONLY");
gMC->Gsvolu("0HOL","TUBE",idtmed[11],phole,3);
z=-pdivider[2]+2*ppins[2]+phole[2];
gMC->Gspos("0HOL",1,"0DIV",0,0,z,0,"ONLY");
//Socket
gMC->Gsvolu("0V1","TUBE",idtmed[4],pdiv1,3);
z=-pdivider[2]+pdiv1[2];
gMC->Gspos("0V1",1,"0DIV",0,0,z,0,"ONLY");
//Resistors
gMC->Gsvolu("0V2","TUBE",idtmed[1],pdiv2,3);
z=pdivider[2]-pdiv2[2];
gMC->Gspos("0V2",1,"0DIV",0,0,z,0,"ONLY");
gMC->Gsvolu("0RS","TUBE",idtmed[4],presist,3);
z=-pdiv2[2]+presist[2];
gMC->Gspos("0RS",1,"0V2",0,0,z,0,"ONLY");
gMC->Gsvolu("0RB","TUBE",idtmed[9],pribber,3);
z=pdiv2[2]-pribber[2];
gMC->Gspos("0RB",1,"0V2",0,0,z,0,"ONLY");
// printf("z DRIB %f\n",z);
}
//------------------------------------------------------------------------
void AliSTARTv1::CreateMaterials()
{
Int_t isxfld = gAlice->Field()->Integ();
Float_t sxmgmx = gAlice->Field()->Max();
Float_t a,z,d,radl,absl,buf[1];
Int_t nbuf;
// Scintillator CH
Float_t ascin[2]={1.01,12.01};
Float_t zscin[2]={1,6};
Float_t wscin[2]={1,1};
Float_t denscin=1.03;
//Lucite C(CH3)CO2CH3
Float_t alucite[3]={1.01,12.01,15.999};
Float_t zlucite[3]={1,6,8};
Float_t wlucite[3]={8,5,2};
Float_t denlucite=1.16;
// PMT glass SiO2
Float_t aglass[2]={28.0855,15.9994};
Float_t zglass[2]={14.,8.};
Float_t wglass[2]={1.,2.};
Float_t dglass=2.65;
// Ceramic 97.2% Al2O3 , 2.8% SiO2
Float_t acer[2],zcer[2],wcer[2]={0.972,0.028};
Float_t aal2o3[2] = { 26.981539,15.9994 };
Float_t zal2o3[2] = { 13.,8. };
Float_t wal2o3[2] = { 2.,3. };
Float_t denscer = 3.6;
// Brass 80% Cu, 20% Zn
Float_t abrass[2] = {63.546,65.39};
Float_t zbrass[2] = {29,30};
Float_t wbrass[2] = {0.8,0.2};
Float_t denbrass=8.96;
//Ribber C6H12S
Float_t aribber[3] = {12.,1.,32.};
Float_t zribber[3] = {6.,1.,16.};
Float_t wribber[3] = {6.,12.,1.};
Float_t denribber=0.8;
/*
// Definition Cherenkov parameters
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 };
Float_t rindex_quarz[14] = { 1.528309,1.533333,
1.538243,1.544223,1.550568,1.55777,
1.565463,1.574765,1.584831,1.597027,
1.611858,1.6277,1.6472,1.6724 };
Float_t absco_quarz[14] = { 20.126,16.27,13.49,11.728,9.224,8.38,7.44,7.17,
6.324,4.483,1.6,.323,.073,0. };
*/
//*** Definition Of avaible START materials ***
AliMaterial(0, "START Steel$", 55.850,26.,7.87,1.76,999);
AliMaterial(1, "START Vacuum$", 1.e-16,1.e-16,1.e-16,1.e16,999);
AliMaterial(2, "START Air$", 14.61, 7.3, .001205, 30423.,999);
AliMixture( 3, "Al2O3 $", aal2o3, zal2o3, denscer, -2, wal2o3);
AliMixture( 4, "PMT glass $",aglass,zglass,dglass,-2,wglass);
char namate[21];
gMC->Gfmate((*fIdmate)[3], namate, a, z, d, radl, absl, buf, nbuf);
acer[0]=a;
zcer[0]=z;
gMC->Gfmate((*fIdmate)[4], namate, a, z, d, radl, absl, buf, nbuf);
acer[1]=a;
zcer[1]=z;
AliMixture( 9, "Ceramic $", acer, zcer, denscer, 2, wcer);
AliMixture( 5, "Scintillator$",ascin,zscin,denscin,-2,wscin);
AliMixture( 6, "Brass $", abrass, zbrass, denbrass, 2, wbrass);
AliMixture( 7, "Ribber $",aribber,zribber,denribber,-3,wribber);
AliMixture( 8, "Lucite$",alucite,zlucite,denlucite,-3,wlucite);
AliMedium(1, "START Air$", 2, 0, isxfld, sxmgmx, 10., .1, 1., .003, .003);
AliMedium(2, "Scintillator$", 5, 1, isxfld, sxmgmx, 10., .01, 1., .003, .003);
AliMedium(3, "Vacuum$", 1, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003);
AliMedium(4, "Ceramic$", 9, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003);
AliMedium(6, "Glass$", 4, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003);
AliMedium(8, "Steel$", 0, 0, isxfld, sxmgmx, 1., .001, 1., .001, .001);
AliMedium(9, "Ribber $", 7, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003);
AliMedium(11, "Brass $", 6, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003);
AliMedium(12, "Lucite$", 8, 1, isxfld, sxmgmx, 10., .01, 1., .003, .003);
if(fDebug) cout<Gsckov(idtmed[2105], 14, ppckov, absco_quarz, effic_all,rindex_quarz);
}
//---------------------------------------------------------------------
void AliSTARTv1::DrawDetector()
{
//
// Draw a shaded view of the Forward multiplicity detector version 0
//
//Set ALIC mother transparent
gMC->Gsatt("ALIC","SEEN",0);
//
//Set volumes visible
// gMC->Gsatt("0ST","SEEN",0);
gMC->Gsatt("0INS","SEEN",0);
gMC->Gsatt("0PMT","SEEN",1);
gMC->Gsatt("0DIV","SEEN",1);
//
gMC->Gdopt("hide","on");
gMC->Gdopt("shad","on");
gMC->SetClipBox(".");
gMC->SetClipBox("*",0,1000,-1000,1000,-1000,1000);
gMC->DefaultRange();
gMC->Gdraw("alic",40,30,0,12,9.5,.7,0.7);
gMC->Gdhead(1111,"T-Zero detector");
gMC->Gdopt("hide","off");
}
//-------------------------------------------------------------------
void AliSTARTv1::Init()
{
// Initialises version 0 of the Forward Multiplicity Detector
//
//Int_t *idtmed = gAlice->Idtmed();
AliSTART::Init();
fIdSens1=gMC->VolId("0TOP");
if(fDebug) printf("%s: *** START version 0 initialized ***\n",ClassName());
}
//-------------------------------------------------------------------
void AliSTARTv1::StepManager()
{
//
// Called for every step in the START Detector
//
Int_t id,copy,copy1;
static Float_t hits[7];
static Float_t edep;
static Int_t vol[2];
TLorentzVector pos;
TClonesArray &lhits = *fHits;
if(!gMC->IsTrackAlive()) return; // particle has disappeared
Float_t charge = gMC->TrackCharge();
if(TMath::Abs(charge)<=0.) return; //take only charged particles
id=gMC->CurrentVolID(copy);
// Check the sensetive volume
if(id==fIdSens1 ) {
if(gMC->IsTrackEntering()) {
gMC->CurrentVolOffID(2,copy);
vol[1]=copy;
gMC->CurrentVolOffID(3,copy1);
vol[0]=copy1;
gMC->TrackPosition(pos);
hits[0] = pos[0];
hits[1] = pos[1];
hits[2] = pos[2];
if(pos[2]<0) vol[0]=2;
if(pos[2]>=0) vol[0]=1;
Float_t etot=gMC->Etot();
hits[4]=etot;
Int_t iPart= gMC->TrackPid();
Int_t partID=gMC->IdFromPDG(iPart);
hits[5]=partID;
Float_t ttime=gMC->TrackTime();
hits[6]=ttime*1e9;
edep=0;
}
if(gMC->IsTrackInside()) {
Float_t de=gMC->Edep();
edep=edep+de;
}
if(gMC->IsTrackExiting()) {
Float_t de=gMC->Edep();
edep=edep+de;
hits[3]=edep*1e3;
new(lhits[fNhits++]) AliSTARThit(fIshunt,gAlice->CurrentTrack(),vol,hits);
}
}
//---------------------------------------------------------------------
}