/***************************************************************************
* 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. *
**************************************************************************/
/* $Id$ */
//
///////////////////////////////////////////////////////////////////////////////
// //
// Photon Multiplicity Detector Version 1 //
// //
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// //
///////////////////////////////////////////////////////////////////////////////
////
#include "Riostream.h"
#include
#include "AliConst.h"
#include "AliMagF.h"
#include "AliPMDv0.h"
#include "AliRun.h"
#include "AliMC.h"
#include "AliLog.h"
const Int_t AliPMDv0::fgkNcellHole = 24; // Hole dimension
const Float_t AliPMDv0::fgkCellRadius = 0.25; // Radius of a hexagonal cell
const Float_t AliPMDv0::fgkCellWall = 0.02; // Thickness of cell Wall
const Float_t AliPMDv0::fgkCellDepth = 0.50; // Gas thickness
const Float_t AliPMDv0::fgkBoundary = 0.7; // Thickness of Boundary wall
const Float_t AliPMDv0::fgkThBase = 0.3; // Thickness of Base plate
const Float_t AliPMDv0::fgkThAir = 0.1; // Thickness of Air
const Float_t AliPMDv0::fgkThPCB = 0.16; // Thickness of PCB
const Float_t AliPMDv0::fgkThLead = 1.5; // Thickness of Pb
const Float_t AliPMDv0::fgkThSteel = 0.5; // Thickness of Steel
const Float_t AliPMDv0::fgkZdist = 361.5; // z-position of the detector
const Float_t AliPMDv0::fgkSqroot3 = 1.7320508;// Square Root of 3
const Float_t AliPMDv0::fgkSqroot3by2 = 0.8660254;// Square Root of 3 by 2
const Float_t AliPMDv0::fgkPi = 3.14159; // pi
ClassImp(AliPMDv0)
//_____________________________________________________________________________
AliPMDv0::AliPMDv0():
fSMthick(0.),
fSMLength(0.),
fMedSens(0),
fNcellSM(0)
{
//
// Default constructor
//
}
//_____________________________________________________________________________
AliPMDv0::AliPMDv0(const char *name, const char *title):
AliPMD(name,title),
fSMthick(0.),
fSMLength(0.),
fMedSens(0),
fNcellSM(0)
{
//
// Standard constructor
//
}
//_____________________________________________________________________________
void AliPMDv0::CreateGeometry()
{
//
// Create geometry for Photon Multiplicity Detector Version 3 :
// April 2, 2001
//
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GetParameters();
CreateSupermodule();
CreatePMD();
}
//_____________________________________________________________________________
void AliPMDv0::CreateSupermodule()
{
//
// Creates the geometry of the cells, places them in supermodule which
// is a rhombus object.
// *** DEFINITION OF THE GEOMETRY OF THE PMD ***
// *** HEXAGONAL CELLS WITH CELL RADIUS 0.25 cm (see "GetParameters")
// -- Author : S. Chattopadhyay, 02/04/1999.
// Basic unit is ECAR, a hexagonal cell made of Ar+CO2, which is placed inside another
// hexagonal cell made of Cu (ECCU) with larger radius, compared to ECAR. The difference
// in radius gives the dimension of half width of each cell wall.
// These cells are placed as 72 x 72 array in a
// rhombus shaped supermodule (EHC1). The rhombus shaped modules are designed
// to have closed packed structure.
//
// Each supermodule (ESMA, ESMB), made of G10 is filled with following components
// EAIR --> Air gap between gas hexagonal cells and G10 backing.
// EHC1 --> Rhombus shaped parallelopiped containing the hexagonal cells
// EAIR --> Air gap between gas hexagonal cells and G10 backing.
//
// ESMA, ESMB are placed in EMM1 along with EMPB (Pb converter)
// and EMFE (iron support)
// EMM1 made of
// ESMB --> Normal supermodule, mirror image of ESMA
// EMPB --> Pb converter
// EMFE --> Fe backing
// ESMA --> Normal supermodule
//
// ESMX, ESMY are placed in EMM2 along with EMPB (Pb converter)
// and EMFE (iron support)
// EMM2 made of
// ESMY --> Special supermodule, mirror image of ESMX,
// EMPB --> Pb converter
// EMFE --> Fe backing
// ESMX --> First of the two Special supermodules near the hole
// EMM3 made of
// ESMQ --> Special supermodule, mirror image of ESMX,
// EMPB --> Pb converter
// EMFE --> Fe backing
// ESMP --> Second of the two Special supermodules near the hole
// EMM2 and EMM3 are used to create the hexagonal HOLE
//
// EPMD
// |
// |
// ---------------------------------------------------------------------------
// | | | | |
// EHOL EMM1 EMM2 EMM3 EALM
// | | |
// -------------------- -------------------- --------------------
// | | | | | | | | | | | |
// ESMB EMPB EMFE ESMA ESMY EMPB EMFE ESMX ESMQ EMPB EMFE ESMP
// | | |
// ------------ ------------ -------------
// | | | | | | | | |
// EAIR EHC1 EAIR EAIR EHC2 EAIR EAIR EHC3 EAIR
// | | |
// ECCU ECCU ECCU
// | | |
// ECAR ECAR ECAR
Int_t i, j;
Float_t xb, yb, zb;
Int_t number;
Int_t ihrotm,irotdm;
Int_t *idtmed = fIdtmed->GetArray()-599;
AliMatrix(ihrotm, 90., 30., 90., 120., 0., 0.);
AliMatrix(irotdm, 90., 180., 90., 270., 180., 0.);
//Subhasis, dimensional parameters of rhombus (dpara) as given to gsvolu
// rhombus to accomodate 72 x 72 hexagons, and with total 1.2cm extension
//(1mm tolerance on both side and 5mm thick G10 wall)
//
// **** CELL SIZE 20 mm^2 EQUIVALENT
// Inner hexagon filled with gas (Ar+CO2)
Float_t hexd2[10] = {0.,360.,6,2,-0.25,0.,0.23,0.25,0.,0.23};
hexd2[4]= -fgkCellDepth/2.;
hexd2[7]= fgkCellDepth/2.;
hexd2[6]= fgkCellRadius - fgkCellWall;
hexd2[9]= fgkCellRadius - fgkCellWall;
// Gas replaced by vacuum for v0(insensitive) version of PMD.
gMC->Gsvolu("ECAR", "PGON", idtmed[697], hexd2,10);
gMC->Gsatt("ECAR", "SEEN", 0);
// Outer hexagon made of Copper
Float_t hexd1[10] = {0.,360.,6,2,-0.25,0.,0.25,0.25,0.,0.25};
hexd1[4]= -fgkCellDepth/2.;
hexd1[7]= fgkCellDepth/2.;
hexd1[6]= fgkCellRadius;
hexd1[9]= fgkCellRadius;
gMC->Gsvolu("ECCU", "PGON", idtmed[614], hexd1,10);
gMC->Gsatt("ECCU", "SEEN", 1);
// --- place inner hex inside outer hex
gMC->Gspos("ECAR", 1, "ECCU", 0., 0., 0., 0, "ONLY");
// Rhombus shaped supermodules (defined by PARA)
// volume for SUPERMODULE
Float_t dparasm1[6] = {12.5,12.5,0.8,30.,0.,0.};
dparasm1[0] = (fNcellSM+0.25)*hexd1[6] ;
dparasm1[1] = dparasm1[0] *fgkSqroot3by2;
dparasm1[2] = fSMthick/2.;
//
gMC->Gsvolu("ESMA","PARA", idtmed[607], dparasm1, 6);
gMC->Gsatt("ESMA", "SEEN", 0);
//
gMC->Gsvolu("ESMB","PARA", idtmed[607], dparasm1, 6);
gMC->Gsatt("ESMB", "SEEN", 0);
// Air residing between the PCB and the base
Float_t dparaair[6] = {12.5,12.5,8.,30.,0.,0.};
dparaair[0]= dparasm1[0];
dparaair[1]= dparasm1[1];
dparaair[2]= fgkThAir/2.;
gMC->Gsvolu("EAIR","PARA", idtmed[698], dparaair, 6);
gMC->Gsatt("EAIR", "SEEN", 0);
// volume for honeycomb chamber EHC1
Float_t dpara1[6] = {12.5,12.5,0.4,30.,0.,0.};
dpara1[0] = dparasm1[0];
dpara1[1] = dparasm1[1];
dpara1[2] = fgkCellDepth/2.;
gMC->Gsvolu("EHC1","PARA", idtmed[698], dpara1, 6);
gMC->Gsatt("EHC1", "SEEN", 1);
// Place hexagonal cells ECCU cells inside EHC1 (72 X 72)
Int_t xrow = 1;
yb = -dpara1[1] + (1./fgkSqroot3by2)*hexd1[6];
zb = 0.;
for (j = 1; j <= fNcellSM; ++j) {
xb =-(dpara1[0] + dpara1[1]*0.577) + 2*hexd1[6]; //0.577=tan(30deg)
if(xrow >= 2){
xb = xb+(xrow-1)*hexd1[6];
}
for (i = 1; i <= fNcellSM; ++i) {
number = i+(j-1)*fNcellSM;
gMC->Gspos("ECCU", number, "EHC1", xb,yb,zb, ihrotm, "ONLY");
xb += (hexd1[6]*2.);
}
xrow = xrow+1;
yb += (hexd1[6]*fgkSqroot3);
}
// Place EHC1 and EAIR into ESMA and ESMB
Float_t zAir1,zAir2,zGas;
//ESMA is normal supermodule with base at bottom, with EHC1
zAir1= -dparasm1[2] + fgkThBase + dparaair[2];
gMC->Gspos("EAIR", 1, "ESMA", 0., 0., zAir1, 0, "ONLY");
zGas=zAir1+dparaair[2]+ fgkThPCB + dpara1[2];
//Line below Commented for version 0 of PMD routine
// gMC->Gspos("EHC1", 1, "ESMA", 0., 0., zGas, 0, "ONLY");
zAir2=zGas+dpara1[2]+ fgkThPCB + dparaair[2];
gMC->Gspos("EAIR", 2, "ESMA", 0., 0., zAir2, 0, "ONLY");
// ESMB is mirror image of ESMA, with base at top, with EHC1
zAir1= -dparasm1[2] + fgkThPCB + dparaair[2];
gMC->Gspos("EAIR", 3, "ESMB", 0., 0., zAir1, 0, "ONLY");
zGas=zAir1+dparaair[2]+ fgkThPCB + dpara1[2];
//Line below Commented for version 0 of PMD routine
// gMC->Gspos("EHC1", 2, "ESMB", 0., 0., zGas, 0, "ONLY");
zAir2=zGas+dpara1[2]+ fgkThPCB + dparaair[2];
gMC->Gspos("EAIR", 4, "ESMB", 0., 0., zAir2, 0, "ONLY");
// special supermodule EMM2(GEANT only) containing 6 unit modules
// volume for SUPERMODULE
Float_t dparasm2[6] = {12.5,12.5,0.8,30.,0.,0.};
dparasm2[0]=(fNcellSM+0.25)*hexd1[6] ;
dparasm2[1] = (fNcellSM - fgkNcellHole + 0.25) * fgkSqroot3by2 * hexd1[6];
dparasm2[2] = fSMthick/2.;
gMC->Gsvolu("ESMX","PARA", idtmed[607], dparasm2, 6);
gMC->Gsatt("ESMX", "SEEN", 0);
//
gMC->Gsvolu("ESMY","PARA", idtmed[607], dparasm2, 6);
gMC->Gsatt("ESMY", "SEEN", 0);
Float_t dpara2[6] = {12.5,12.5,0.4,30.,0.,0.};
dpara2[0] = dparasm2[0];
dpara2[1] = dparasm2[1];
dpara2[2] = fgkCellDepth/2.;
gMC->Gsvolu("EHC2","PARA", idtmed[698], dpara2, 6);
gMC->Gsatt("EHC2", "SEEN", 1);
// Air residing between the PCB and the base
Float_t dpara2Air[6] = {12.5,12.5,8.,30.,0.,0.};
dpara2Air[0]= dparasm2[0];
dpara2Air[1]= dparasm2[1];
dpara2Air[2]= fgkThAir/2.;
gMC->Gsvolu("EAIX","PARA", idtmed[698], dpara2Air, 6);
gMC->Gsatt("EAIX", "SEEN", 0);
// Place hexagonal single cells ECCU inside EHC2
// skip cells which go into the hole in top left corner.
xrow=1;
yb = -dpara2[1] + (1./fgkSqroot3by2)*hexd1[6];
zb = 0.;
for (j = 1; j <= (fNcellSM - fgkNcellHole); ++j) {
xb =-(dpara2[0] + dpara2[1]*0.577) + 2*hexd1[6];
if(xrow >= 2){
xb = xb+(xrow-1)*hexd1[6];
}
for (i = 1; i <= fNcellSM; ++i) {
number = i+(j-1)*fNcellSM;
gMC->Gspos("ECCU", number, "EHC2", xb,yb,zb, ihrotm, "ONLY");
xb += (hexd1[6]*2.);
}
xrow = xrow+1;
yb += (hexd1[6]*fgkSqroot3);
}
// ESMX is normal supermodule with base at bottom, with EHC2
zAir1= -dparasm2[2] + fgkThBase + dpara2Air[2];
gMC->Gspos("EAIX", 1, "ESMX", 0., 0., zAir1, 0, "ONLY");
zGas=zAir1+dpara2Air[2]+ fgkThPCB + dpara2[2];
//Line below Commented for version 0 of PMD routine
// gMC->Gspos("EHC2", 1, "ESMX", 0., 0., zGas, 0, "ONLY");
zAir2=zGas+dpara2[2]+ fgkThPCB + dpara2Air[2];
gMC->Gspos("EAIX", 2, "ESMX", 0., 0., zAir2, 0, "ONLY");
// ESMY is mirror image of ESMX with base at bottom, with EHC2
zAir1= -dparasm2[2] + fgkThPCB + dpara2Air[2];
gMC->Gspos("EAIX", 3, "ESMY", 0., 0., zAir1, 0, "ONLY");
zGas=zAir1+dpara2Air[2]+ fgkThPCB + dpara2[2];
//Line below Commented for version 0 of PMD routine
// gMC->Gspos("EHC2", 2, "ESMY", 0., 0., zGas, 0, "ONLY");
zAir2=zGas+dpara2[2]+ fgkThPCB + dpara2Air[2];
gMC->Gspos("EAIX", 4, "ESMY", 0., 0., zAir2, 0, "ONLY");
//
// special supermodule EMM3 (GEANT only) containing 2 unit modules
// volume for SUPERMODULE
//
Float_t dparaSM3[6] = {12.5,12.5,0.8,30.,0.,0.};
dparaSM3[0]=(fNcellSM - fgkNcellHole +0.25)*hexd1[6] ;
dparaSM3[1] = (fgkNcellHole + 0.25) * hexd1[6] * fgkSqroot3by2;
dparaSM3[2] = fSMthick/2.;
gMC->Gsvolu("ESMP","PARA", idtmed[607], dparaSM3, 6);
gMC->Gsatt("ESMP", "SEEN", 0);
//
gMC->Gsvolu("ESMQ","PARA", idtmed[607], dparaSM3, 6);
gMC->Gsatt("ESMQ", "SEEN", 0);
Float_t dpara3[6] = {12.5,12.5,0.4,30.,0.,0.};
dpara3[0] = dparaSM3[0];
dpara3[1] = dparaSM3[1];
dpara3[2] = fgkCellDepth/2.;
gMC->Gsvolu("EHC3","PARA", idtmed[698], dpara3, 6);
gMC->Gsatt("EHC3", "SEEN", 1);
// Air residing between the PCB and the base
Float_t dpara3Air[6] = {12.5,12.5,8.,30.,0.,0.};
dpara3Air[0]= dparaSM3[0];
dpara3Air[1]= dparaSM3[1];
dpara3Air[2]= fgkThAir/2.;
gMC->Gsvolu("EAIP","PARA", idtmed[698], dpara3Air, 6);
gMC->Gsatt("EAIP", "SEEN", 0);
// Place hexagonal single cells ECCU inside EHC3
// skip cells which go into the hole in top left corner.
xrow=1;
yb = -dpara3[1] + (1./fgkSqroot3by2)*hexd1[6];
zb = 0.;
for (j = 1; j <= fgkNcellHole; ++j) {
xb =-(dpara3[0] + dpara3[1]*0.577) + 2*hexd1[6];
if(xrow >= 2){
xb = xb+(xrow-1)*hexd1[6];
}
for (i = 1; i <= (fNcellSM - fgkNcellHole); ++i) {
number = i+(j-1)*(fNcellSM - fgkNcellHole);
gMC->Gspos("ECCU", number, "EHC3", xb,yb,zb, ihrotm, "ONLY");
xb += (hexd1[6]*2.);
}
xrow = xrow+1;
yb += (hexd1[6]*fgkSqroot3);
}
// ESMP is normal supermodule with base at bottom, with EHC3
zAir1= -dparaSM3[2] + fgkThBase + dpara3Air[2];
gMC->Gspos("EAIP", 1, "ESMP", 0., 0., zAir1, 0, "ONLY");
zGas=zAir1+dpara3Air[2]+ fgkThPCB + dpara3[2];
//Line below Commented for version 0 of PMD routine
// gMC->Gspos("EHC3", 1, "ESMP", 0., 0., zGas, 0, "ONLY");
zAir2=zGas+dpara3[2]+ fgkThPCB + dpara3Air[2];
gMC->Gspos("EAIP", 2, "ESMP", 0., 0., zAir2, 0, "ONLY");
// ESMQ is mirror image of ESMP with base at bottom, with EHC3
zAir1= -dparaSM3[2] + fgkThPCB + dpara3Air[2];
gMC->Gspos("EAIP", 3, "ESMQ", 0., 0., zAir1, 0, "ONLY");
zGas=zAir1+dpara3Air[2]+ fgkThPCB + dpara3[2];
//Line below Commented for version 0 of PMD routine
// gMC->Gspos("EHC3", 2, "ESMQ", 0., 0., zGas, 0, "ONLY");
zAir2=zGas+dpara3[2]+ fgkThPCB + dpara3Air[2];
gMC->Gspos("EAIP", 4, "ESMQ", 0., 0., zAir2, 0, "ONLY");
}
//_____________________________________________________________________________
void AliPMDv0::CreatePMD()
{
//
// Create final detector from supermodules
//
// -- Author : Y.P. VIYOGI, 07/05/1996.
// -- Modified: P.V.K.S.Baba(JU), 15-12-97.
// -- Modified: For New Geometry YPV, March 2001.
Float_t xp, yp, zp;
Int_t i,j;
Int_t nummod;
Int_t jhrot12,jhrot13, irotdm;
Int_t *idtmed = fIdtmed->GetArray()-599;
// VOLUMES Names : begining with "E" for all PMD volumes,
// The names of SIZE variables begin with S and have more meaningful
// characters as shown below.
// VOLUME SIZE MEDIUM : REMARKS
// ------ ----- ------ : ---------------------------
// EPMD GASPMD AIR : INSIDE PMD and its SIZE
// *** Define the EPMD Volume and fill with air ***
// Gaspmd, the dimension of HEXAGONAL mother volume of PMD,
Float_t gaspmd[10] = {0.,360.,6,2,-4.,12.,150.,4.,12.,150.};
gaspmd[5] = fgkNcellHole * fgkCellRadius * 2. * fgkSqroot3by2;
gaspmd[8] = gaspmd[5];
gMC->Gsvolu("EPMD", "PGON", idtmed[698], gaspmd, 10);
gMC->Gsatt("EPMD", "SEEN", 0);
AliMatrix(irotdm, 90., 0., 90., 90., 180., 0.);
AliMatrix(jhrot12, 90., 120., 90., 210., 0., 0.);
AliMatrix(jhrot13, 90., 240., 90., 330., 0., 0.);
Float_t dmthick = 2. * fSMthick + fgkThLead + fgkThSteel;
// dparaemm1 array contains parameters of the imaginary volume EMM1,
// EMM1 is a master module of type 1, which has 24 copies in the PMD.
// EMM1 : normal volume as in old cases
Float_t dparaemm1[6] = {12.5,12.5,0.8,30.,0.,0.};
dparaemm1[0] = fSMLength/2.;
dparaemm1[1] = dparaemm1[0] *fgkSqroot3by2;
dparaemm1[2] = dmthick/2.;
gMC->Gsvolu("EMM1","PARA", idtmed[698], dparaemm1, 6);
gMC->Gsatt("EMM1", "SEEN", 1);
//
// --- DEFINE Modules, iron, and lead volumes
// Pb Convertor for EMM1
Float_t dparapb1[6] = {12.5,12.5,8.,30.,0.,0.};
dparapb1[0] = fSMLength/2.;
dparapb1[1] = dparapb1[0] * fgkSqroot3by2;
dparapb1[2] = fgkThLead/2.;
gMC->Gsvolu("EPB1","PARA", idtmed[600], dparapb1, 6);
gMC->Gsatt ("EPB1", "SEEN", 0);
// Fe Support for EMM1
Float_t dparafe1[6] = {12.5,12.5,8.,30.,0.,0.};
dparafe1[0] = dparapb1[0];
dparafe1[1] = dparapb1[1];
dparafe1[2] = fgkThSteel/2.;
gMC->Gsvolu("EFE1","PARA", idtmed[618], dparafe1, 6);
gMC->Gsatt ("EFE1", "SEEN", 0);
//
// position supermodule ESMA, ESMB, EPB1, EFE1 inside EMM1
Float_t zps,zpb,zfe,zcv;
zps = -dparaemm1[2] + fSMthick/2.;
gMC->Gspos("ESMB", 1, "EMM1", 0., 0., zps, 0, "ONLY");
zpb = zps+fSMthick/2.+dparapb1[2];
gMC->Gspos("EPB1", 1, "EMM1", 0., 0., zpb, 0, "ONLY");
zfe = zpb+dparapb1[2]+dparafe1[2];
gMC->Gspos("EFE1", 1, "EMM1", 0., 0., zfe, 0, "ONLY");
zcv = zfe+dparafe1[2]+fSMthick/2.;
gMC->Gspos("ESMA", 1, "EMM1", 0., 0., zcv, 0, "ONLY");
// EMM2 : special master module having full row of cells but the number
// of rows limited by hole.
Float_t dparaemm2[6] = {12.5,12.5,0.8,30.,0.,0.};
dparaemm2[0] = fSMLength/2.;
dparaemm2[1] = (fNcellSM - fgkNcellHole + 0.25)*fgkCellRadius*fgkSqroot3by2;
dparaemm2[2] = dmthick/2.;
gMC->Gsvolu("EMM2","PARA", idtmed[698], dparaemm2, 6);
gMC->Gsatt("EMM2", "SEEN", 1);
// Pb Convertor for EMM2
Float_t dparapb2[6] = {12.5,12.5,8.,30.,0.,0.};
dparapb2[0] = dparaemm2[0];
dparapb2[1] = dparaemm2[1];
dparapb2[2] = fgkThLead/2.;
gMC->Gsvolu("EPB2","PARA", idtmed[600], dparapb2, 6);
gMC->Gsatt ("EPB2", "SEEN", 0);
// Fe Support for EMM2
Float_t dparafe2[6] = {12.5,12.5,8.,30.,0.,0.};
dparafe2[0] = dparapb2[0];
dparafe2[1] = dparapb2[1];
dparafe2[2] = fgkThSteel/2.;
gMC->Gsvolu("EFE2","PARA", idtmed[618], dparafe2, 6);
gMC->Gsatt ("EFE2", "SEEN", 0);
// position supermodule ESMX, ESMY inside EMM2
zps = -dparaemm2[2] + fSMthick/2.;
gMC->Gspos("ESMY", 1, "EMM2", 0., 0., zps, 0, "ONLY");
zpb = zps + fSMthick/2.+dparapb2[2];
gMC->Gspos("EPB2", 1, "EMM2", 0., 0., zpb, 0, "ONLY");
zfe = zpb + dparapb2[2]+dparafe2[2];
gMC->Gspos("EFE2", 1, "EMM2", 0., 0., zfe, 0, "ONLY");
zcv = zfe + dparafe2[2]+fSMthick/2.;
gMC->Gspos("ESMX", 1, "EMM2", 0., 0., zcv, 0, "ONLY");
//
// EMM3 : special master module having truncated rows and columns of cells
// limited by hole.
Float_t dparaemm3[6] = {12.5,12.5,0.8,30.,0.,0.};
dparaemm3[0] = dparaemm2[1]/fgkSqroot3by2;
dparaemm3[1] = (fgkNcellHole + 0.25) * fgkCellRadius *fgkSqroot3by2;
dparaemm3[2] = dmthick/2.;
gMC->Gsvolu("EMM3","PARA", idtmed[698], dparaemm3, 6);
gMC->Gsatt("EMM3", "SEEN", 1);
// Pb Convertor for EMM3
Float_t dparapb3[6] = {12.5,12.5,8.,30.,0.,0.};
dparapb3[0] = dparaemm3[0];
dparapb3[1] = dparaemm3[1];
dparapb3[2] = fgkThLead/2.;
gMC->Gsvolu("EPB3","PARA", idtmed[600], dparapb3, 6);
gMC->Gsatt ("EPB3", "SEEN", 0);
// Fe Support for EMM3
Float_t dparafe3[6] = {12.5,12.5,8.,30.,0.,0.};
dparafe3[0] = dparapb3[0];
dparafe3[1] = dparapb3[1];
dparafe3[2] = fgkThSteel/2.;
gMC->Gsvolu("EFE3","PARA", idtmed[618], dparafe3, 6);
gMC->Gsatt ("EFE3", "SEEN", 0);
// position supermodule ESMP, ESMQ inside EMM3
zps = -dparaemm3[2] + fSMthick/2.;
gMC->Gspos("ESMQ", 1, "EMM3", 0., 0., zps, 0, "ONLY");
zpb = zps + fSMthick/2.+dparapb3[2];
gMC->Gspos("EPB3", 1, "EMM3", 0., 0., zpb, 0, "ONLY");
zfe = zpb + dparapb3[2]+dparafe3[2];
gMC->Gspos("EFE3", 1, "EMM3", 0., 0., zfe, 0, "ONLY");
zcv = zfe + dparafe3[2] + fSMthick/2.;
gMC->Gspos("ESMP", 1, "EMM3", 0., 0., zcv, 0, "ONLY");
//
// EHOL is a tube structure made of air
//
//Float_t d_hole[3];
//d_hole[0] = 0.;
//d_hole[1] = fgkNcellHole * fgkCellRadius *2. * fgkSqroot3by2 + boundary;
//d_hole[2] = dmthick/2.;
//
//gMC->Gsvolu("EHOL", "TUBE", idtmed[698], d_hole, 3);
//gMC->Gsatt("EHOL", "SEEN", 1);
//Al-rod as boundary of the supermodules
Float_t alRod[3] ;
alRod[0] = fSMLength * 3/2. - gaspmd[5]/2 - fgkBoundary ;
alRod[1] = fgkBoundary;
alRod[2] = dmthick/2.;
gMC->Gsvolu("EALM","BOX ", idtmed[698], alRod, 3);
gMC->Gsatt ("EALM", "SEEN", 1);
Float_t xalm[3];
xalm[0]=alRod[0] + gaspmd[5] + 3.0*fgkBoundary;
xalm[1]=-xalm[0]/2.;
xalm[2]=xalm[1];
Float_t yalm[3];
yalm[0]=0.;
yalm[1]=xalm[0]*fgkSqroot3by2;
yalm[2]=-yalm[1];
// delx = full side of the supermodule
Float_t delx=fSMLength * 3.;
Float_t x1= delx*fgkSqroot3by2 /2.;
Float_t x4=delx/4.;
// placing master modules and Al-rod in PMD
Float_t dx = fSMLength;
Float_t dy = dx * fgkSqroot3by2;
Float_t xsup[9] = {-dx/2., dx/2., 3.*dx/2.,
-dx, 0., dx,
-3.*dx/2., -dx/2., dx/2.};
Float_t ysup[9] = {dy, dy, dy,
0., 0., 0.,
-dy, -dy, -dy};
// xpos and ypos are the x & y coordinates of the centres of EMM1 volumes
Float_t xoff = fgkBoundary * TMath::Tan(fgkPi/6.);
Float_t xmod[3]={x4 + xoff , x4 + xoff, -2.*x4-fgkBoundary/fgkSqroot3by2};
Float_t ymod[3] = {-x1 - fgkBoundary, x1 + fgkBoundary, 0.};
Float_t xpos[9], ypos[9], x2, y2, x3, y3;
Float_t xemm2 = fSMLength/2. -
(fNcellSM + fgkNcellHole + 0.25) * fgkCellRadius * 0.5
+ xoff;
Float_t yemm2 = -(fNcellSM + fgkNcellHole + 0.25)*fgkCellRadius*fgkSqroot3by2
- fgkBoundary;
Float_t xemm3 = (fNcellSM + 0.5 * fgkNcellHole + 0.25) * fgkCellRadius +
xoff;
Float_t yemm3 = - (fgkNcellHole - 0.25) * fgkCellRadius * fgkSqroot3by2 -
fgkBoundary;
Float_t theta[3] = {0., 2.*fgkPi/3., 4.*fgkPi/3.};
Int_t irotate[3] = {0, jhrot12, jhrot13};
nummod=0;
for (j=0; j<3; ++j) {
gMC->Gspos("EALM", j+1, "EPMD", xalm[j],yalm[j], 0., irotate[j], "ONLY");
x2=xemm2*TMath::Cos(theta[j]) - yemm2*TMath::Sin(theta[j]);
y2=xemm2*TMath::Sin(theta[j]) + yemm2*TMath::Cos(theta[j]);
gMC->Gspos("EMM2", j+1, "EPMD", x2,y2, 0., irotate[j], "ONLY");
x3=xemm3*TMath::Cos(theta[j]) - yemm3*TMath::Sin(theta[j]);
y3=xemm3*TMath::Sin(theta[j]) + yemm3*TMath::Cos(theta[j]);
gMC->Gspos("EMM3", j+4, "EPMD", x3,y3, 0., irotate[j], "ONLY");
for (i=1; i<9; ++i) {
xpos[i]=xmod[j] + xsup[i]*TMath::Cos(theta[j]) -
ysup[i]*TMath::Sin(theta[j]);
ypos[i]=ymod[j] + xsup[i]*TMath::Sin(theta[j]) +
ysup[i]*TMath::Cos(theta[j]);
AliDebugClass(1,Form("xpos: %f, ypos: %f", xpos[i], ypos[i]));
nummod = nummod+1;
AliDebugClass(1,Form("nummod %d",nummod));
gMC->Gspos("EMM1", nummod + 6, "EPMD", xpos[i],ypos[i], 0., irotate[j], "ONLY");
}
}
// place EHOL in the centre of EPMD
// gMC->Gspos("EHOL", 1, "EPMD", 0.,0.,0., 0, "ONLY");
// --- Place the EPMD in ALICE
xp = 0.;
yp = 0.;
zp = fgkZdist;
gMC->Gspos("EPMD", 1, "ALIC", xp,yp,zp, 0, "ONLY");
}
//_____________________________________________________________________________
void AliPMDv0::DrawModule() const
{
//
// Draw a shaded view of the Photon Multiplicity Detector
//
gMC->Gsatt("*", "seen", -1);
gMC->Gsatt("alic", "seen", 0);
//
// Set the visibility of the components
//
gMC->Gsatt("ECAR","seen",0);
gMC->Gsatt("ECCU","seen",1);
gMC->Gsatt("EHC1","seen",1);
gMC->Gsatt("EHC1","seen",1);
gMC->Gsatt("EHC2","seen",1);
gMC->Gsatt("EMM1","seen",1);
gMC->Gsatt("EHOL","seen",1);
gMC->Gsatt("EPMD","seen",0);
//
gMC->Gdopt("hide", "on");
gMC->Gdopt("shad", "on");
gMC->Gsatt("*", "fill", 7);
gMC->SetClipBox(".");
gMC->SetClipBox("*", 0, 3000, -3000, 3000, -6000, 6000);
gMC->DefaultRange();
gMC->Gdraw("alic", 40, 30, 0, 22, 20.5, .02, .02);
gMC->Gdhead(1111, "Photon Multiplicity Detector Version 1");
//gMC->Gdman(17, 5, "MAN");
gMC->Gdopt("hide", "off");
}
//_____________________________________________________________________________
void AliPMDv0::CreateMaterials()
{
//
// Create materials for the PMD
//
// ORIGIN : Y. P. VIYOGI
//
// cout << " Inside create materials " << endl;
Int_t *idtmed = fIdtmed->GetArray()-599;
Int_t isxfld = gAlice->Field()->Integ();
Float_t sxmgmx = gAlice->Field()->Max();
// --- Define the various materials for GEANT ---
AliMaterial(1, "Pb $", 207.19, 82., 11.35, .56, 18.5);
// Argon
Float_t dAr = 0.001782; // --- Ar density in g/cm3 ---
Float_t x0Ar = 19.55 / dAr;
AliMaterial(2, "Argon$", 39.95, 18., dAr, x0Ar, 6.5e4);
// --- CO2 ---
Float_t aCO2[2] = { 12.,16. };
Float_t zCO2[2] = { 6.,8. };
Float_t wCO2[2] = { 1.,2. };
Float_t dCO2 = 0.001977;
AliMixture(3, "CO2 $", aCO2, zCO2, dCO2, -2, wCO2);
AliMaterial(4, "Al $", 26.98, 13., 2.7, 8.9, 18.5);
// ArCO2
Float_t aArCO2[3] = {39.948,12.0107,15.9994};
Float_t zArCO2[3] = {18.,6.,8.};
Float_t wArCO2[3] = {0.7,0.08,0.22};
Float_t dArCO2 = dAr * 0.7 + dCO2 * 0.3;
AliMixture(5, "ArCO2$", aArCO2, zArCO2, dArCO2, 3, wArCO2);
AliMaterial(6, "Fe $", 55.85, 26., 7.87, 1.76, 18.5);
// G10
Float_t aG10[4]={1.,12.011,15.9994,28.086};
Float_t zG10[4]={1.,6.,8.,14.};
//PH Float_t wG10[4]={0.148648649,0.104054054,0.483499056,0.241666667};
Float_t wG10[4]={0.15201,0.10641,0.49444,0.24714};
AliMixture(8,"G10",aG10,zG10,1.7,4,wG10);
AliMaterial(15, "Cu $", 63.54, 29., 8.96, 1.43, 15.);
// Steel
Float_t aSteel[4] = { 55.847,51.9961,58.6934,28.0855 };
Float_t zSteel[4] = { 26.,24.,28.,14. };
Float_t wSteel[4] = { .715,.18,.1,.005 };
Float_t dSteel = 7.88;
AliMixture(19, "STAINLESS STEEL$", aSteel, zSteel, dSteel, 4, wSteel);
//Air
Float_t aAir[4]={12.0107,14.0067,15.9994,39.948};
Float_t zAir[4]={6.,7.,8.,18.};
Float_t wAir[4]={0.000124,0.755267,0.231781,0.012827};
Float_t dAir1 = 1.20479E-10;
Float_t dAir = 1.20479E-3;
AliMixture(98, "Vacum$", aAir, zAir, dAir1, 4, wAir);
AliMixture(99, "Air $", aAir, zAir, dAir , 4, wAir);
// Define tracking media
AliMedium(1, "Pb conv.$", 1, 0, 0, isxfld, sxmgmx, 1., .1, .01, .1);
AliMedium(4, "Al $", 4, 0, 0, isxfld, sxmgmx, .1, .1, .01, .1);
AliMedium(5, "ArCO2 $", 5, 1, 0, isxfld, sxmgmx, .1, .1, .10, .1);
AliMedium(6, "Fe $", 6, 0, 0, isxfld, sxmgmx, .1, .1, .01, .1);
AliMedium(8, "G10plate$", 8, 0, 0, isxfld, sxmgmx, 1., .1, .01, .1);
AliMedium(15, "Cu $", 15, 0, 0, isxfld, sxmgmx, .1, .1, .01, .1);
AliMedium(19, "S steel$", 19, 0, 0, isxfld, sxmgmx, 1., .1, .01, .1);
AliMedium(98, "Vacuum $", 98, 0, 0, isxfld, sxmgmx, 1., .1, .10, 10);
AliMedium(99, "Air gaps$", 99, 0, 0, isxfld, sxmgmx, 1., .1, .10, .1);
// --- Generate explicitly delta rays in the iron, aluminium and lead ---
gMC->Gstpar(idtmed[600], "LOSS", 3.);
gMC->Gstpar(idtmed[600], "DRAY", 1.);
gMC->Gstpar(idtmed[603], "LOSS", 3.);
gMC->Gstpar(idtmed[603], "DRAY", 1.);
gMC->Gstpar(idtmed[604], "LOSS", 3.);
gMC->Gstpar(idtmed[604], "DRAY", 1.);
gMC->Gstpar(idtmed[605], "LOSS", 3.);
gMC->Gstpar(idtmed[605], "DRAY", 1.);
gMC->Gstpar(idtmed[606], "LOSS", 3.);
gMC->Gstpar(idtmed[606], "DRAY", 1.);
gMC->Gstpar(idtmed[607], "LOSS", 3.);
gMC->Gstpar(idtmed[607], "DRAY", 1.);
// --- Energy cut-offs in the Pb and Al to gain time in tracking ---
// --- without affecting the hit patterns ---
gMC->Gstpar(idtmed[600], "CUTGAM", 1e-4);
gMC->Gstpar(idtmed[600], "CUTELE", 1e-4);
gMC->Gstpar(idtmed[600], "CUTNEU", 1e-4);
gMC->Gstpar(idtmed[600], "CUTHAD", 1e-4);
gMC->Gstpar(idtmed[605], "CUTGAM", 1e-4);
gMC->Gstpar(idtmed[605], "CUTELE", 1e-4);
gMC->Gstpar(idtmed[605], "CUTNEU", 1e-4);
gMC->Gstpar(idtmed[605], "CUTHAD", 1e-4);
gMC->Gstpar(idtmed[606], "CUTGAM", 1e-4);
gMC->Gstpar(idtmed[606], "CUTELE", 1e-4);
gMC->Gstpar(idtmed[606], "CUTNEU", 1e-4);
gMC->Gstpar(idtmed[606], "CUTHAD", 1e-4);
gMC->Gstpar(idtmed[603], "CUTGAM", 1e-4);
gMC->Gstpar(idtmed[603], "CUTELE", 1e-4);
gMC->Gstpar(idtmed[603], "CUTNEU", 1e-4);
gMC->Gstpar(idtmed[603], "CUTHAD", 1e-4);
// gMC->Gstpar(idtmed[609], "CUTGAM", 1e-4);
// gMC->Gstpar(idtmed[609], "CUTELE", 1e-4);
// gMC->Gstpar(idtmed[609], "CUTNEU", 1e-4);
// gMC->Gstpar(idtmed[609], "CUTHAD", 1e-4);
// --- Prevent particles stopping in the gas due to energy cut-off ---
gMC->Gstpar(idtmed[604], "CUTGAM", 1e-5);
gMC->Gstpar(idtmed[604], "CUTELE", 1e-5);
gMC->Gstpar(idtmed[604], "CUTNEU", 1e-5);
gMC->Gstpar(idtmed[604], "CUTHAD", 1e-5);
gMC->Gstpar(idtmed[604], "CUTMUO", 1e-5);
}
//_____________________________________________________________________________
void AliPMDv0::Init()
{
//
// Initialises PMD detector after it has been built
//
Int_t i;
// kdet=1;
//
if(AliLog::GetGlobalDebugLevel()>0) {
printf("\n%s: ",ClassName());
for(i=0;i<35;i++) printf("*");
printf(" PMD_INIT ");
for(i=0;i<35;i++) printf("*");
printf("\n%s: ",ClassName());
printf(" PMD simulation package (v0) initialised\n");
printf("%s: parameters of pmd\n", ClassName());
printf("%s: %10.2f %10.2f %10.2f \
%10.2f\n",ClassName(),fgkCellRadius,fgkCellWall,fgkCellDepth,fgkZdist );
printf("%s: ",ClassName());
for(i=0;i<80;i++) printf("*");
printf("\n");
}
Int_t *idtmed = fIdtmed->GetArray()-599;
fMedSens=idtmed[605-1];
}
//_____________________________________________________________________________
void AliPMDv0::StepManager()
{
//
// Called at each step in the PMD
//
Int_t copy;
Float_t hits[4], destep;
Float_t center[3] = {0,0,0};
Int_t vol[5];
//char *namep;
if(gMC->CurrentMedium() == fMedSens && (destep = gMC->Edep())) {
gMC->CurrentVolID(copy);
//namep=gMC->CurrentVolName();
//printf("Current vol is %s \n",namep);
vol[0]=copy;
gMC->CurrentVolOffID(1,copy);
//namep=gMC->CurrentVolOffName(1);
//printf("Current vol 11 is %s \n",namep);
vol[1]=copy;
gMC->CurrentVolOffID(2,copy);
//namep=gMC->CurrentVolOffName(2);
//printf("Current vol 22 is %s \n",namep);
vol[2]=copy;
// if(strncmp(namep,"EHC1",4))vol[2]=1;
gMC->CurrentVolOffID(3,copy);
//namep=gMC->CurrentVolOffName(3);
//printf("Current vol 33 is %s \n",namep);
vol[3]=copy;
gMC->CurrentVolOffID(4,copy);
//namep=gMC->CurrentVolOffName(4);
//printf("Current vol 44 is %s \n",namep);
vol[4]=copy;
//printf("volume number %d,%d,%d,%d,%d,%f \n",vol[0],vol[1],vol[2],vol[3],vol[4],destep*1000000);
gMC->Gdtom(center,hits,1);
hits[3] = destep*1e9; //Number in eV
AddHit(gAlice->GetMCApp()->GetCurrentTrackNumber(), vol, hits);
}
}
//------------------------------------------------------------------------
// Get parameters
void AliPMDv0::GetParameters()
{
// This gives all the parameters of the detector
// such as Length of Supermodules
// thickness of the Supermodule
//
Int_t ncellum, numum;
ncellum = 24;
numum = 3;
fNcellSM = ncellum * numum; //no. of cells in a row in one supermodule
fSMLength = (fNcellSM + 0.25 )*fgkCellRadius*2.;
fSMthick = fgkThBase + fgkThAir + fgkThPCB + fgkCellDepth +
fgkThPCB + fgkThAir + fgkThPCB;
}