/**************************************************************************
* 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. *
**************************************************************************/
/*
$Log$
Revision 1.16.2.2 2000/02/28 17:53:24 cblume
Introduce TRD geometry classes
Revision 1.16.2.1 2000/02/28 17:04:19 cblume
Include functions and data members for AliTRDrecPoint
Revision 1.16 2000/01/19 17:17:35 fca
Introducing a list of lists of hits -- more hits allowed for detector now
Revision 1.15 1999/11/02 17:04:25 fca
Small syntax change for HP compiler
Revision 1.14 1999/11/02 16:57:02 fca
Avoid non ansi warnings on HP compilers
Revision 1.13 1999/11/02 16:35:56 fca
New version of TRD introduced
Revision 1.12 1999/11/01 20:41:51 fca
Added protections against using the wrong version of FRAME
Revision 1.11 1999/09/29 09:24:34 fca
Introduction of the Copyright and cvs Log
*/
///////////////////////////////////////////////////////////////////////////////
// //
// Transition Radiation Detector //
// This class contains the basic functions for the Transition Radiation //
// Detector, as well as the geometry. //
// Functions specific to one particular geometry are contained in the //
// derived classes. //
// //
//Begin_Html
/*
*/
//End_Html
// //
// //
///////////////////////////////////////////////////////////////////////////////
#include
#include
#include
#include
#include "AliTRD.h"
#include "AliRun.h"
#include "AliConst.h"
#include "AliTRDdigitizer.h"
#include "AliTRDclusterizer.h"
#include "AliTRDgeometryHole.h"
#include "AliTRDgeometryFull.h"
#include "AliTRDrecPoint.h"
ClassImp(AliTRD)
//_____________________________________________________________________________
AliTRD::AliTRD()
{
//
// Default constructor
//
fIshunt = 0;
fGasMix = 0;
fHits = 0;
fDigits = 0;
fRecPoints = 0;
fNRecPoints = 0;
fGeometry = 0;
}
//_____________________________________________________________________________
AliTRD::AliTRD(const char *name, const char *title)
: AliDetector(name,title)
{
//
// Standard constructor for the TRD
//
// Check that FRAME is there otherwise we have no place where to
// put TRD
AliModule* FRAME=gAlice->GetModule("FRAME");
if (!FRAME) {
Error("Ctor","TRD needs FRAME to be present\n");
exit(1);
}
// Define the TRD geometry according to the FRAME geometry
if (FRAME->IsVersion() == 0) {
// Geometry with hole
fGeometry = new AliTRDgeometryHole();
}
else if (FRAME->IsVersion() == 1) {
// Geometry without hole
fGeometry = new AliTRDgeometryFull();
}
else {
Error("Ctor","Could not find valid FRAME version\n");
exit(1);
}
// Allocate the hit array
fHits = new TClonesArray("AliTRDhit" , 405);
gAlice->AddHitList(fHits);
// Allocate the digits array
fDigits = 0;
// Allocate the rec point array
fRecPoints = new TClonesArray("AliTRDrecPoint", 400);
fNRecPoints = 0;
fIshunt = 0;
fGasMix = 0;
SetMarkerColor(kWhite);
}
//_____________________________________________________________________________
AliTRD::~AliTRD()
{
//
// TRD destructor
//
fIshunt = 0;
delete fGeometry;
delete fHits;
delete fRecPoints;
}
//_____________________________________________________________________________
void AliTRD::AddRecPoint(Float_t *pos, Int_t *digits, Int_t det, Float_t amp)
{
//
// Add a reconstructed point for the TRD
//
TClonesArray &lRecPoints = *fRecPoints;
AliTRDrecPoint *RecPoint = new(lRecPoints[fNRecPoints++]) AliTRDrecPoint();
TVector3 posVec(pos[0],pos[1],pos[2]);
RecPoint->SetLocalPosition(posVec);
RecPoint->SetDetector(det);
RecPoint->SetAmplitude(amp);
for (Int_t iDigit = 0; iDigit < 3; iDigit++) {
RecPoint->AddDigit(digits[iDigit]);
}
}
//_____________________________________________________________________________
void AliTRD::AddDigit(Int_t *digits)
{
//
// Add a digit for the TRD
//
TClonesArray &ldigits = *fDigits;
new(ldigits[fNdigits++]) AliTRDdigit(digits);
}
//_____________________________________________________________________________
void AliTRD::AddHit(Int_t track, Int_t det, Float_t *hits)
{
//
// Add a hit for the TRD
//
TClonesArray &lhits = *fHits;
new(lhits[fNhits++]) AliTRDhit(fIshunt,track,det,hits);
}
//_____________________________________________________________________________
void AliTRD::BuildGeometry()
{
//
// Create the ROOT TNode geometry for the TRD
//
TNode *Node, *Top;
TPGON *pgon;
const Int_t kColorTRD = 46;
// Find the top node alice
Top = gAlice->GetGeometry()->GetNode("alice");
pgon = new TPGON("S_TRD","TRD","void",0,360,kNsect,4);
Float_t ff = TMath::Cos(kDegrad * 180 / kNsect);
Float_t rrmin = kRmin / ff;
Float_t rrmax = kRmax / ff;
pgon->DefineSection(0,-kZmax1,rrmax,rrmax);
pgon->DefineSection(1,-kZmax2,rrmin,rrmax);
pgon->DefineSection(2, kZmax2,rrmin,rrmax);
pgon->DefineSection(3, kZmax1,rrmax,rrmax);
Top->cd();
Node = new TNode("TRD","TRD","S_TRD",0,0,0,"");
Node->SetLineColor(kColorTRD);
fNodes->Add(Node);
}
//_____________________________________________________________________________
void AliTRD::CreateGeometry()
{
//
// Creates the volumes for the TRD chambers
//
// Check that FRAME is there otherwise we have no place where to put the TRD
AliModule* FRAME = gAlice->GetModule("FRAME");
if (!FRAME) {
printf(" The TRD needs the FRAME to be defined first\n");
return;
}
fGeometry->CreateGeometry(fIdtmed->GetArray() - 1299);
}
//_____________________________________________________________________________
void AliTRD::CreateMaterials()
{
//
// Create the materials for the TRD
// Origin Y.Foka
//
Int_t ISXFLD = gAlice->Field()->Integ();
Float_t SXMGMX = gAlice->Field()->Max();
// For polyethilene (CH2)
Float_t ape[2] = { 12., 1. };
Float_t zpe[2] = { 6., 1. };
Float_t wpe[2] = { 1., 2. };
Float_t dpe = 0.95;
// For mylar (C5H4O2)
Float_t amy[3] = { 12., 1., 16. };
Float_t zmy[3] = { 6., 1., 8. };
Float_t wmy[3] = { 5., 4., 2. };
Float_t dmy = 1.39;
// For CO2
Float_t aco[2] = { 12., 16. };
Float_t zco[2] = { 6., 8. };
Float_t wco[2] = { 1., 2. };
Float_t dco = 0.001977;
// For water
Float_t awa[2] = { 1., 16. };
Float_t zwa[2] = { 1., 8. };
Float_t wwa[2] = { 2., 1. };
Float_t dwa = 1.0;
// For isobutane (C4H10)
Float_t ais[2] = { 12., 1. };
Float_t zis[2] = { 6., 1. };
Float_t wis[2] = { 4., 10. };
Float_t dis = 0.00267;
// For Xe/CO2-gas-mixture
// Xe-content of the Xe/CO2-mixture (90% / 10%)
Float_t fxc = .90;
// Xe-content of the Xe/Isobutane-mixture (97% / 3%)
Float_t fxi = .97;
Float_t dxe = .005858;
// General tracking parameter
Float_t tmaxfd = -10.;
Float_t stemax = -1e10;
Float_t deemax = -0.1;
Float_t epsil = 1e-4;
Float_t stmin = -0.001;
Float_t absl, radl, d, buf[1];
Float_t agm[2], dgm, zgm[2], wgm[2];
Int_t nbuf;
//////////////////////////////////////////////////////////////////////////
// Define Materials
//////////////////////////////////////////////////////////////////////////
AliMaterial( 1, "Al $", 26.98, 13.0, 2.7 , 8.9 , 37.2);
AliMaterial( 2, "Air$", 14.61, 7.3, 0.001205, 30420.0 , 67500.0);
AliMaterial( 4, "Xe $", 131.29, 54.0, dxe , 1447.59, 0.0);
AliMaterial( 5, "Cu $", 63.54, 29.0, 8.96 , 1.43, 14.8);
AliMaterial( 6, "C $", 12.01, 6.0, 2.265 , 18.8 , 74.4);
AliMaterial(12, "G10$", 20.00, 10.0, 1.7 , 19.4 , 999.0);
// Mixtures
AliMixture(3, "Polyethilene$", ape, zpe, dpe, -2, wpe);
AliMixture(7, "Mylar$", amy, zmy, dmy, -3, wmy);
AliMixture(8, "CO2$", aco, zco, dco, -2, wco);
AliMixture(9, "Isobutane$", ais, zis, dis, -2, wis);
AliMixture(13,"Water$", awa, zwa, dwa, -2, wwa);
// Gas mixtures
Char_t namate[21];
// Xe/CO2-mixture
// Get properties of Xe
gMC->Gfmate((*fIdmate)[4], namate, agm[0], zgm[0], d, radl, absl, buf, nbuf);
// Get properties of CO2
gMC->Gfmate((*fIdmate)[8], namate, agm[1], zgm[1], d, radl, absl, buf, nbuf);
// Create gas mixture
wgm[0] = fxc;
wgm[1] = 1. - fxc;
dgm = wgm[0] * dxe + wgm[1] * dco;
AliMixture(10, "Gas mixture 1$", agm, zgm, dgm, 2, wgm);
// Xe/Isobutane-mixture
// Get properties of Xe
gMC->Gfmate((*fIdmate)[4], namate, agm[0], zgm[0], d, radl, absl, buf, nbuf);
// Get properties of Isobutane
gMC->Gfmate((*fIdmate)[9], namate, agm[1], zgm[1], d, radl, absl, buf, nbuf);
// Create gas mixture
wgm[0] = fxi;
wgm[1] = 1. - fxi;
dgm = wgm[0] * dxe + wgm[1] * dis;
AliMixture(11, "Gas mixture 2$", agm, zgm, dgm, 2, wgm);
//////////////////////////////////////////////////////////////////////////
// Tracking Media Parameters
//////////////////////////////////////////////////////////////////////////
// Al Frame
AliMedium(1, "Al Frame$", 1, 0, ISXFLD, SXMGMX
, tmaxfd, stemax, deemax, epsil, stmin);
// Air
AliMedium(2, "Air$", 2, 0, ISXFLD, SXMGMX
, tmaxfd, stemax, deemax, epsil, stmin);
// Polyethilene
AliMedium(3, "Radiator$", 3, 0, ISXFLD, SXMGMX
, tmaxfd, stemax, deemax, epsil, stmin);
// Xe
AliMedium(4, "Xe$", 4, 1, ISXFLD, SXMGMX
, tmaxfd, stemax, deemax, epsil, stmin);
// Cu pads
AliMedium(5, "Padplane$", 5, 1, ISXFLD, SXMGMX
, tmaxfd, stemax, deemax, epsil, stmin);
// Fee + cables
AliMedium(6, "Readout$", 1, 0, ISXFLD, SXMGMX
, tmaxfd, stemax, deemax, epsil, stmin);
// C frame
AliMedium(7, "C Frame$", 6, 0, ISXFLD, SXMGMX
, tmaxfd, stemax, deemax, epsil, stmin);
// Mylar foils
AliMedium(8, "Mylar$", 7, 0, ISXFLD, SXMGMX
, tmaxfd, stemax, deemax, epsil, stmin);
if (fGasMix == 1) {
// Gas-mixture (Xe/CO2)
AliMedium(9, "Gas-mix$", 10, 1, ISXFLD, SXMGMX
, tmaxfd, stemax, deemax, epsil, stmin);
}
else {
// Gas-mixture (Xe/Isobutane)
AliMedium(9, "Gas-mix$", 11, 1, ISXFLD, SXMGMX
, tmaxfd, stemax, deemax, epsil, stmin);
}
// Nomex-honeycomb (use carbon for the time being)
AliMedium(10, "Nomex$", 6, 0, ISXFLD, SXMGMX
, tmaxfd, stemax, deemax, epsil, stmin);
// Kapton foils (use Mylar for the time being)
AliMedium(11, "Kapton$", 7, 0, ISXFLD, SXMGMX
, tmaxfd, stemax, deemax, epsil, stmin);
// Gas-filling of the radiator
AliMedium(12, "CO2$", 8, 0, ISXFLD, SXMGMX
, tmaxfd, stemax, deemax, epsil, stmin);
// G10-plates
AliMedium(13, "G10-plates$",12, 0, ISXFLD, SXMGMX
, tmaxfd, stemax, deemax, epsil, stmin);
// Cooling water
AliMedium(14, "Water$", 13, 0, ISXFLD, SXMGMX
, tmaxfd, stemax, deemax, epsil, stmin);
}
//_____________________________________________________________________________
void AliTRD::DrawModule()
{
//
// Draw a shaded view of the Transition Radiation Detector version 0
//
// Set everything unseen
gMC->Gsatt("*" ,"SEEN",-1);
// Set ALIC mother transparent
gMC->Gsatt("ALIC","SEEN", 0);
// Set the volumes visible
if (fGeometry->IsVersion() == 0) {
gMC->Gsatt("B071","SEEN", 0);
gMC->Gsatt("B074","SEEN", 0);
gMC->Gsatt("B075","SEEN", 0);
gMC->Gsatt("B077","SEEN", 0);
gMC->Gsatt("BTR1","SEEN", 0);
gMC->Gsatt("BTR2","SEEN", 0);
gMC->Gsatt("BTR3","SEEN", 0);
gMC->Gsatt("TRD1","SEEN", 0);
gMC->Gsatt("TRD2","SEEN", 0);
gMC->Gsatt("TRD3","SEEN", 0);
}
else {
gMC->Gsatt("B071","SEEN", 0);
gMC->Gsatt("B074","SEEN", 0);
gMC->Gsatt("B075","SEEN", 0);
gMC->Gsatt("B077","SEEN", 0);
gMC->Gsatt("BTR1","SEEN", 0);
gMC->Gsatt("BTR2","SEEN", 0);
gMC->Gsatt("BTR3","SEEN", 0);
gMC->Gsatt("TRD1","SEEN", 0);
}
gMC->Gsatt("UCII","SEEN", 0);
gMC->Gsatt("UCIM","SEEN", 0);
gMC->Gsatt("UCIO","SEEN", 0);
gMC->Gsatt("UL02","SEEN", 1);
gMC->Gsatt("UL05","SEEN", 1);
gMC->Gsatt("UL06","SEEN", 1);
gMC->Gdopt("hide", "on");
gMC->Gdopt("shad", "on");
gMC->Gsatt("*", "fill", 7);
gMC->SetClipBox(".");
gMC->SetClipBox("*", 0, 2000, -2000, 2000, -2000, 2000);
gMC->DefaultRange();
gMC->Gdraw("alic", 40, 30, 0, 12, 9.4, .021, .021);
gMC->Gdhead(1111, "Transition Radiation Detector");
gMC->Gdman(18, 4, "MAN");
}
//_____________________________________________________________________________
Int_t AliTRD::DistancetoPrimitive(Int_t , Int_t )
{
//
// Distance between the mouse and the TRD detector on the screen
// Dummy routine
return 9999;
}
//_____________________________________________________________________________
void AliTRD::Init()
{
//
// Initialize the TRD detector after the geometry has been created
//
Int_t i;
printf("\n");
for (i = 0; i < 35; i++) printf("*");
printf(" TRD_INIT ");
for (i = 0; i < 35; i++) printf("*");
printf("\n");
printf("\n");
if (fGeometry->IsVersion() == 0) {
printf(" Geometry with holes initialized.\n\n");
}
else if (fGeometry->IsVersion() == 1) {
printf(" Geometry without holes initialized.\n\n");
}
if (fGasMix == 1)
printf(" Gas Mixture: 90%% Xe + 10%% CO2\n\n");
else
printf(" Gas Mixture: 97%% Xe + 3%% Isobutane\n\n");
}
//_____________________________________________________________________________
void AliTRD::MakeBranch(Option_t* option)
{
//
// Create Tree branches for the TRD digits and cluster.
//
Int_t buffersize = 4000;
Char_t branchname[15];
AliDetector::MakeBranch(option);
//Char_t *D = strstr(option,"D");
//sprintf(branchname,"%s",GetName());
//if (fDigits && gAlice->TreeD() && D) {
// gAlice->TreeD()->Branch(branchname,&fDigits, buffersize);
// printf("* AliTRD::MakeBranch * Making Branch %s for digits in TreeD\n",branchname);
//}
Char_t *R = strstr(option,"R");
sprintf(branchname,"%srecPoints",GetName());
if (fRecPoints && gAlice->TreeR() && R) {
gAlice->TreeR()->Branch(branchname,&fRecPoints,buffersize);
printf("* AliTRD::MakeBranch * Making Branch %s for points in TreeR\n",branchname);
}
}
//_____________________________________________________________________________
void AliTRD::ResetRecPoints()
{
//
// Reset number of reconstructed points and the point array
//
fNRecPoints = 0;
if (fRecPoints) fRecPoints->Clear();
}
//_____________________________________________________________________________
void AliTRD::SetTreeAddress()
{
//
// Set the branch addresses for the trees.
//
Char_t branchname[15];
AliDetector::SetTreeAddress();
TBranch *branch;
TTree *treeR = gAlice->TreeR();
if (treeR) {
sprintf(branchname,"%srecPoints",GetName());
if (fRecPoints) {
branch = treeR->GetBranch(branchname);
if (branch) {
branch->SetAddress(&fRecPoints);
}
}
}
}
//_____________________________________________________________________________
void AliTRD::SetGasMix(Int_t imix)
{
//
// Defines the gas mixture (imix=0: Xe/Isobutane imix=1: Xe/CO2)
//
if ((imix < 0) || (imix > 1)) {
printf("Wrong input value: %d\n",imix);
printf("Use standard setting\n");
fGasMix = 0;
return;
}
fGasMix = imix;
}
//______________________________________________________________________________
void AliTRD::Streamer(TBuffer &R__b)
{
//
// Stream an object of class AliTRD.
//
if (R__b.IsReading()) {
Version_t R__v = R__b.ReadVersion(); if (R__v) { }
AliDetector::Streamer(R__b);
R__b >> fGasMix;
R__b >> fGeometry;
// Stream the pointers but not the TClonesArray
R__b >> fRecPoints; // diff
}
else {
R__b.WriteVersion(AliTRD::IsA());
AliDetector::Streamer(R__b);
R__b << fGasMix;
R__b << fGeometry;
// Stream the pointers but not the TClonesArrays
R__b << fRecPoints; // diff
}
}
ClassImp(AliTRDhit)
//_____________________________________________________________________________
AliTRDhit::AliTRDhit(Int_t shunt, Int_t track, Int_t det, Float_t *hits)
:AliHit(shunt, track)
{
//
// Create a TRD hit
//
// Store volume hierarchy
fDetector = det;
// Store position and charge
fX = hits[0];
fY = hits[1];
fZ = hits[2];
fQ = hits[3];
}