/**************************************************************************
* 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. *
**************************************************************************/
/* $Id$ */
//
///////////////////////////////////////////////////////////////////////////////
// //
// Time Projection Chamber version 2 -- detailed TPC and slow simulation //
// //
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// //
// //
///////////////////////////////////////////////////////////////////////////////
//#include
#include
#include
#include
#include "AliLog.h"
#include "AliMathBase.h"
#include "AliTrackReference.h"
#include "AliTPCParam.h"
#include "AliTPCTrackHitsV2.h"
#include "AliTPCv2.h"
#include "AliGeomManager.h"
#include "TGeoVolume.h"
#include "TGeoPcon.h"
#include "TGeoTube.h"
#include "TGeoCone.h"
#include "TGeoPgon.h"
#include "TGeoTrd1.h"
#include "TGeoCompositeShape.h"
#include "TGeoPara.h"
#include "TGeoPhysicalNode.h"
#include "TGeoHalfSpace.h"
#include "TTreeStream.h"
ClassImp(AliTPCv2)
//_____________________________________________________________________________
AliTPCv2::AliTPCv2(const char *name, const char *title) :
AliTPC(name, title),
fIdSens(0),
fIDrift(0),
fSecOld(0)
{
//
// Standard constructor for Time Projection Chamber version 2
//
SetBufferSize(128000);
// if (fTPCParam)
// fTPCParam->Write(fTPCParam->GetTitle());
}
//_____________________________________________________________________________
void AliTPCv2::CreateGeometry()
{
//
// Create the geometry of Time Projection Chamber version 2
//
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//----------------------------------------------------------
// This geometry is written using TGeo class
// Firstly the shapes are defined, and only then the volumes
// What is recognized by the MC are volumes
//----------------------------------------------------------
//
// tpc - this will be the mother volume
//
//
// here I define a volume TPC
// retrive the medium name with "TPC_" as a leading string
//
TGeoPcon *tpc = new TGeoPcon(0.,360.,30); //30 sections
//
tpc->DefineSection(0,-289.6,77.,278.);
tpc->DefineSection(1,-262.1,77.,278.);
//
tpc->DefineSection(2,-262.1,83.1,278.);
tpc->DefineSection(3,-260.,83.1,278.);
//
tpc->DefineSection(4,-260.,70.,278.);
tpc->DefineSection(5,-259.6,70.,278.);
//
tpc->DefineSection(6,-259.6,68.1,278.);
tpc->DefineSection(7,-253.6,68.1,278.);
//
tpc->DefineSection(8,-253.6,67.88,278.);//hs
tpc->DefineSection(9,-74.0,60.68,278.);// hs
//
tpc->DefineSection(10,-74.0,60.1,278.);
tpc->DefineSection(11,-73.3,60.1,278.);
//
tpc->DefineSection(12,-73.3,56.9,278.);
tpc->DefineSection(13,-68.5,56.9,278.);
//
tpc->DefineSection(14,-68.5,60.,278.);
tpc->DefineSection(15,-64.7,60.,278.);
//
tpc->DefineSection(16,-64.7,56.9,278.);
tpc->DefineSection(17,73.3,56.9,278.);
//
tpc->DefineSection(18,73.3,60.1,278.);
tpc->DefineSection(19,74.0,60.1,278.);
//
tpc->DefineSection(20,74.0,60.68,278.);// hs
tpc->DefineSection(21,253.6,65.38,278.);// hs
//
tpc->DefineSection(22,253.6,65.6,278.);
tpc->DefineSection(23,259.6,65.6,278.);
//
tpc->DefineSection(24,259.6,70.0,278.);
tpc->DefineSection(25,260.,70.0,278.);
//
tpc->DefineSection(26,260.,83.1,278.);
tpc->DefineSection(27,262.1,83.1,278.);
//
tpc->DefineSection(28,262.1,77.,278);
tpc->DefineSection(29,289.6,77.,278.);
//
TGeoMedium *m1 = gGeoManager->GetMedium("TPC_Air");
TGeoVolume *v1 = new TGeoVolume("TPC_M",tpc,m1);
//
// drift volume - sensitive volume, extended beyond the
// endcaps, because of the alignment
//
TGeoPcon *dvol = new TGeoPcon(0.,360.,6);
dvol->DefineSection(0,-260.,74.5,264.4);
dvol->DefineSection(1,-253.6,74.5,264.4);
//
dvol->DefineSection(2,-253.6,76.6774,258.);
dvol->DefineSection(3,253.6,76.6774,258.);
//
dvol->DefineSection(4,253.6,74.5,264.4);
dvol->DefineSection(5,260.,74.5,264.4);
//
TGeoMedium *m5 = gGeoManager->GetMedium("TPC_Ne-CO2-2");
TGeoVolume *v9 = new TGeoVolume("TPC_Drift",dvol,m5);
//
v1->AddNode(v9,1);
//
// outer insulator
//
TGeoPcon *tpco = new TGeoPcon(0.,360.,6); //insulator
//
tpco->DefineSection(0,-256.6,264.8,278.);
tpco->DefineSection(1,-253.6,264.8,278.);
//
tpco->DefineSection(2,-253.6,258.,278.);
tpco->DefineSection(3,250.6,258.,278.);
//
tpco->DefineSection(4,250.6,258.,275.5);
tpco->DefineSection(5,253.6,258.,275.5);
//
TGeoMedium *m2 = gGeoManager->GetMedium("TPC_CO2");
TGeoVolume *v2 = new TGeoVolume("TPC_OI",tpco,m2);
//
TGeoRotation *segrot;//segment rotations
//
// outer containment vessel
//
TGeoPcon *tocv = new TGeoPcon(0.,360.,6); // containment vessel
//
tocv->DefineSection(0,-256.6,264.8,278.);
tocv->DefineSection(1,-253.6,264.8,278.);
//
tocv->DefineSection(2,-253.6,274.8124,278.);
tocv->DefineSection(3,247.6,274.8124,278.);
//
tocv->DefineSection(4,247.6,270.4,278.);
tocv->DefineSection(5,250.6,270.4,278.);
//
TGeoMedium *m3 = gGeoManager->GetMedium("TPC_Al");
TGeoVolume *v3 = new TGeoVolume("TPC_OCV",tocv,m3);
//
TGeoTubeSeg *to1 = new TGeoTubeSeg(274.8174,277.995,252.1,0.,59.9); //epoxy
TGeoTubeSeg *to2 = new TGeoTubeSeg(274.8274,277.985,252.1,0.,59.9); //tedlar
TGeoTubeSeg *to3 = new TGeoTubeSeg(274.8312,277.9812,252.1,0.,59.9);//prepreg2
TGeoTubeSeg *to4 = new TGeoTubeSeg(274.9062,277.9062,252.1,0.,59.9);//nomex
TGeoTubeSeg *tog5 = new TGeoTubeSeg(274.8174,277.995,252.1,59.9,60.);//epoxy
//
TGeoMedium *sm1 = gGeoManager->GetMedium("TPC_Epoxy");
TGeoMedium *sm2 = gGeoManager->GetMedium("TPC_Tedlar");
TGeoMedium *sm3 = gGeoManager->GetMedium("TPC_Prepreg2");
TGeoMedium *sm4 = gGeoManager->GetMedium("TPC_Nomex");
//
TGeoVolume *tov1 = new TGeoVolume("TPC_OCV1",to1,sm1);
TGeoVolume *tov2 = new TGeoVolume("TPC_OCV2",to2,sm2);
TGeoVolume *tov3 = new TGeoVolume("TPC_OCV3",to3,sm3);
TGeoVolume *tov4 = new TGeoVolume("TPC_OCV4",to4,sm4);
TGeoVolume *togv5 = new TGeoVolume("TPC_OCVG5",tog5,sm1);
//
TGeoMedium *mhs = gGeoManager->GetMedium("TPC_Steel");
TGeoMedium *m12 = gGeoManager->GetMedium("TPC_Water");
//-------------------------------------------------------
// Tpc Outer Field Cage
// daughters - composite (sandwich)
//-------------------------------------------------------
TGeoPcon *tofc = new TGeoPcon(0.,360.,6);
//
tofc->DefineSection(0,-253.6,258.,269.6);
tofc->DefineSection(1,-250.6,258.,269.6);
//
tofc->DefineSection(2,-250.6,258.,260.0676);
tofc->DefineSection(3,250.6,258.,260.0676);
//
tofc->DefineSection(4,250.6,258.,275.5);
tofc->DefineSection(5,253.6,258.,275.5);
//
TGeoVolume *v4 = new TGeoVolume("TPC_TOFC",tofc,m3);
//sandwich
TGeoTubeSeg *tf1 = new TGeoTubeSeg(258.0,260.0676,252.1,0.,59.9); //tedlar
TGeoTubeSeg *tf2 = new TGeoTubeSeg(258.0038,260.0638,252.1,0.,59.9); //prepreg3
TGeoTubeSeg *tf3 = new TGeoTubeSeg(258.0338,260.0338,252.1,0.,59.9);//nomex
TGeoTubeSeg *tfg4 = new TGeoTubeSeg(258.0,260.0676,252.1,59.9,60.); //epoxy glue
//
TGeoMedium *sm5 = gGeoManager->GetMedium("TPC_Prepreg3");
//
TGeoVolume *tf1v = new TGeoVolume("TPC_OFC1",tf1,sm2);
TGeoVolume *tf2v = new TGeoVolume("TPC_OFC2",tf2,sm5);
TGeoVolume *tf3v = new TGeoVolume("TPC_OFC3",tf3,sm4);
TGeoVolume *tfg4v = new TGeoVolume("TPC_OFCG4",tfg4,sm1);
//
// outer part - positioning
//
tov1->AddNode(tov2,1); tov2->AddNode(tov3,1); tov3->AddNode(tov4,1);//ocv
//
tf1v->AddNode(tf2v,1); tf2v->AddNode(tf3v,1);//ofc
//
TGeoVolumeAssembly *t200 = new TGeoVolumeAssembly("TPC_OCVSEG");
TGeoVolumeAssembly *t300 = new TGeoVolumeAssembly("TPC_OFCSEG");
//
// assembly OCV and OFC
//
// 1st - no rotation
t200->AddNode(tov1,1); t200->AddNode(togv5,1);
t300->AddNode(tf1v,1); t300->AddNode(tfg4v,1);
// 2nd - rotation 60 deg
segrot = new TGeoRotation();
segrot->RotateZ(60.);
t200->AddNode(tov1,2,segrot); t200->AddNode(togv5,2,segrot);
t300->AddNode(tf1v,2,segrot); t300->AddNode(tfg4v,2,segrot);
// 3rd rotation 120 deg
segrot = new TGeoRotation();
segrot->RotateZ(120.);
t200->AddNode(tov1,3,segrot); t200->AddNode(togv5,3,segrot);
t300->AddNode(tf1v,3,segrot); t300->AddNode(tfg4v,3,segrot);
//4th rotation 180 deg
segrot = new TGeoRotation();
segrot->RotateZ(180.);
t200->AddNode(tov1,4,segrot); t200->AddNode(togv5,4,segrot);
t300->AddNode(tf1v,4,segrot); t300->AddNode(tfg4v,4,segrot);
//5th rotation 240 deg
segrot = new TGeoRotation();
segrot->RotateZ(240.);
t200->AddNode(tov1,5,segrot); t200->AddNode(togv5,5,segrot);
t300->AddNode(tf1v,5,segrot); t300->AddNode(tfg4v,5,segrot);
//6th rotation 300 deg
segrot = new TGeoRotation();
segrot->RotateZ(300.);
t200->AddNode(tov1,6,segrot); t200->AddNode(togv5,6,segrot);
t300->AddNode(tf1v,6,segrot); t300->AddNode(tfg4v,6,segrot);
//
v3->AddNode(t200,1,new TGeoTranslation(0.,0.,-1.5)); v4->AddNode(t300,1);
//
v2->AddNode(v3,1); v2->AddNode(v4,1);
//
v1->AddNode(v2,1);
//--------------------------------------------------------------------
// Tpc Inner INsulator (CO2)
// the cones, the central drum and the inner f.c. sandwich with a piece
// of the flane will be placed in the TPC
//--------------------------------------------------------------------
TGeoPcon *tpci = new TGeoPcon(0.,360.,4);
//
tpci->DefineSection(0,-253.6,68.4,76.6774);
tpci->DefineSection(1,-74.0,61.2,76.6774);
//
tpci->DefineSection(2,74.0,61.2,76.6774);
//
tpci->DefineSection(3,253.6,65.9,76.6774);
//
TGeoVolume *v5 = new TGeoVolume("TPC_INI",tpci,m2);
//
// now the inner field cage - only part of flanges (2 copies)
//
TGeoTube *tif1 = new TGeoTube(69.9,76.6774,1.5);
TGeoVolume *v6 = new TGeoVolume("TPC_IFC1",tif1,m3);
//
//---------------------------------------------------------
// Tpc Inner Containment vessel - Muon side
//---------------------------------------------------------
TGeoPcon *tcms = new TGeoPcon(0.,360.,10);
//
tcms->DefineSection(0,-259.1,68.1,74.2);
tcms->DefineSection(1,-253.6,68.1,74.2);
//
tcms->DefineSection(2,-253.6,68.1,68.4);
tcms->DefineSection(3,-74.0,60.9,61.2);
//
tcms->DefineSection(4,-74.0,60.1,61.2);
tcms->DefineSection(5,-73.3,60.1,61.2);
//
tcms->DefineSection(6,-73.3,56.9,61.2);
tcms->DefineSection(7,-73.0,56.9,61.2);
//
tcms->DefineSection(8,-73.0,56.9,58.8);
tcms->DefineSection(9,-71.3,56.9,58.8);
//
TGeoVolume *v7 = new TGeoVolume("TPC_ICVM",tcms,m3);
//------------------------------------------------
// Heat screen muon side
//------------------------------------------------
TGeoCone *thsm = new TGeoCone(89.8,67.88,68.1,60.68,60.9);
TGeoCone *thsmw = new TGeoCone(89.8,67.94,68.04,60.74,60.84);
TGeoVolume *hvsm = new TGeoVolume("TPC_HSM",thsm,mhs); //steel
TGeoVolume *hvsmw = new TGeoVolume("TPC_HSMW",thsmw,m12); //water
// assembly heat screen muon
hvsm->AddNode(hvsmw,1);
//-----------------------------------------------
// inner containment vessel - shaft side
//-----------------------------------------------
TGeoPcon *tcss = new TGeoPcon(0.,360.,10);
//
tcss->DefineSection(0,71.3,56.9,58.8);
tcss->DefineSection(1,73.0,56.9,58.8);
//
tcss->DefineSection(2,73.0,56.9,61.2);
tcss->DefineSection(3,73.3,56.9,61.2);
//
tcss->DefineSection(4,73.3,60.1,61.2);
tcss->DefineSection(5,74.0,60.1,61.2);
//
tcss->DefineSection(6,74.0,60.9,61.2);
tcss->DefineSection(7,253.6,65.6,65.9);
//
tcss->DefineSection(8,253.6,65.6,74.2);
tcss->DefineSection(9,258.1,65.6,74.2);
//
TGeoVolume *v8 = new TGeoVolume("TPC_ICVS",tcss,m3);
//-------------------------------------------------
// Heat screen shaft side
//--------------------------------------------------
TGeoCone *thss = new TGeoCone(89.8,60.68,60.9,65.38,65.6);
TGeoCone *thssw = new TGeoCone(89.8,60.74,60.84,65.44,65.54);
TGeoVolume *hvss = new TGeoVolume("TPC_HSS",thss,mhs); //steel
TGeoVolume *hvssw = new TGeoVolume("TPC_HSSW",thssw,m12); //water
//assembly heat screen shaft
hvss->AddNode(hvssw,1);
//-----------------------------------------------
// Inner field cage
// define 4 parts and make an assembly
//-----------------------------------------------
// part1 - Al - 2 copies
TGeoTube *t1 = new TGeoTube(76.6774,78.845,0.75);
TGeoVolume *tv1 = new TGeoVolume("TPC_IFC2",t1,m3);
// sandwich - outermost parts - 2 copies
//
// segment outermost
//
TGeoTubeSeg *t2 = new TGeoTubeSeg(76.6774,78.845,74.175,350.,109.4); // tedlar 38 microns
TGeoTubeSeg *t3 = new TGeoTubeSeg(76.6812,78.8412,74.175,350.,109.4); // prepreg2 500 microns
TGeoTubeSeg *t4 = new TGeoTubeSeg(76.7312,78.7912,74.175,350.,109.4); // prepreg3 300 microns
TGeoTubeSeg *t5 = new TGeoTubeSeg(76.7612,78.7612,74.175,350.,109.4); // nomex 2 cm
TGeoTubeSeg *tepox1 = new TGeoTubeSeg(76.6774,78.845,74.175,109.4,110.);//epoxy
TGeoTubeSeg *tpr1 = new TGeoTubeSeg(78.845,78.885,74.175,109.,111.);
// volumes for the outer part
TGeoVolume *tv2 = new TGeoVolume("TPC_IFC3",t2,sm2);
TGeoVolume *tv3 = new TGeoVolume("TPC_IFC4",t3,sm3);
TGeoVolume *tv4 = new TGeoVolume("TPC_IFC5",t4,sm5);
TGeoVolume *tv5 = new TGeoVolume("TPC_IFC6",t5,sm4);
TGeoVolume *tvep1 = new TGeoVolume("TPC_IFEPOX1",tepox1,sm1);
TGeoVolume *tvpr1 = new TGeoVolume("TPC_PRSTR1",tpr1,sm2);
//
// middle parts - 2 copies
//
// segment middle
//
TGeoTubeSeg *t6 = new TGeoTubeSeg(76.6774,78.795,5.,350.,109.4); // tedlar 38 microns
TGeoTubeSeg *t7 = new TGeoTubeSeg(76.6812,78.7912,5.,350.,109.4); // prepreg2 250 microns
TGeoTubeSeg *t8 = new TGeoTubeSeg(76.7062,78.7662,5.,350.,109.4); // prepreg3 300 microns
TGeoTubeSeg *t9 = new TGeoTubeSeg(76.7362,78.7362,5.,350.,109.4); // nomex 2 cm
TGeoTubeSeg *tepox2 = new TGeoTubeSeg(76.6774,78.795,5.,109.4,110.);//epoxy
TGeoTubeSeg *tpr2 = new TGeoTubeSeg(78.795,78.835,5.,109.,111.);
// volumes for the middle part
TGeoVolume *tv6 = new TGeoVolume("TPC_IFC7",t6,sm2);
TGeoVolume *tv7 = new TGeoVolume("TPC_IFC8",t7,sm3);
TGeoVolume *tv8 = new TGeoVolume("TPC_IFC9",t8,sm5);
TGeoVolume *tv9 = new TGeoVolume("TPC_IFC10",t9,sm4);
TGeoVolume *tvep2 = new TGeoVolume("TPC_IFEPOX2",tepox2,sm1);
TGeoVolume *tvpr2 = new TGeoVolume("TPC_PRSTR2",tpr2,sm2);
// central part - 1 copy
//
// segment central part
//
TGeoTubeSeg *t10 = new TGeoTubeSeg(76.6774,78.785,93.75,350.,109.4); // tedlar 38 microns
TGeoTubeSeg *t11 = new TGeoTubeSeg(76.6812,78.7812,93.75,350.,109.4); // prepreg3 500 microns
TGeoTubeSeg *t12 = new TGeoTubeSeg(76.7312,78.7312,93.75,350.,109.4); // nomex 2 cm
TGeoTubeSeg *tepox3 = new TGeoTubeSeg(76.6774,78.785,93.75,109.4,110.);//epoxy
TGeoTubeSeg *tpr3 = new TGeoTubeSeg(78.785,78.825,93.75,109.,111.);
// volumes for the central part
TGeoVolume *tv10 = new TGeoVolume("TPC_IFC11",t10,sm2);
TGeoVolume *tv11 = new TGeoVolume("TPC_IFC12",t11,sm5);
TGeoVolume *tv12 = new TGeoVolume("TPC_IFC13",t12,sm4);
TGeoVolume *tvep3 = new TGeoVolume("TPC_IFEPOX3",tepox3,sm1);
TGeoVolume *tvpr3 = new TGeoVolume("TPC_PRSTR3",tpr3,sm2);
//
// creating a sandwich for the outer par,t tv2 is the mother
//
tv2->AddNode(tv3,1); tv3->AddNode(tv4,1); tv4->AddNode(tv5,1);
//
// creating a sandwich for the middle part, tv6 is the mother
//
tv6->AddNode(tv7,1); tv7->AddNode(tv8,1); tv8->AddNode(tv9,1);
//
// creating a sandwich for the central part, tv10 is the mother
//
tv10->AddNode(tv11,1); tv11->AddNode(tv12,1);
//
TGeoVolumeAssembly *tv100 = new TGeoVolumeAssembly("TPC_IFC"); // ifc itself - 3 segments
//
// first segment - no rotation
//
// central
tv100->AddNode(tv10,1); //sandwich
tv100->AddNode(tvep3,1);//epoxy
tv100->AddNode(tvpr3,1);//prepreg strip
// middle
tv100->AddNode(tv6,1,new TGeoTranslation(0.,0.,-98.75)); //sandwich1
tv100->AddNode(tv6,2,new TGeoTranslation(0.,0.,98.75)); // sandwich2
tv100->AddNode(tvep2,1,new TGeoTranslation(0.,0.,-98.75)); //epoxy
tv100->AddNode(tvep2,2,new TGeoTranslation(0.,0.,98.75)); //epoxy
tv100->AddNode(tvpr2,1,new TGeoTranslation(0.,0.,-98.75));//prepreg strip
tv100->AddNode(tvpr2,2,new TGeoTranslation(0.,0.,98.75));
// outer
tv100->AddNode(tv2,1,new TGeoTranslation(0.,0.,-177.925)); //sandwich
tv100->AddNode(tv2,2,new TGeoTranslation(0.,0.,177.925));
tv100->AddNode(tvep1,1,new TGeoTranslation(0.,0.,-177.925)); //epoxy
tv100->AddNode(tvep1,2,new TGeoTranslation(0.,0.,177.925));
tv100->AddNode(tvpr1,1,new TGeoTranslation(0.,0.,-177.925));//prepreg strip
tv100->AddNode(tvpr1,2,new TGeoTranslation(0.,0.,-177.925));
//
// second segment - rotation 120 deg.
//
segrot = new TGeoRotation();
segrot->RotateZ(120.);
//
// central
tv100->AddNode(tv10,2,segrot); //sandwich
tv100->AddNode(tvep3,2,segrot);//epoxy
tv100->AddNode(tvpr3,2,segrot);//prepreg strip
// middle
tv100->AddNode(tv6,3,new TGeoCombiTrans(0.,0.,-98.75,segrot)); //sandwich1
tv100->AddNode(tv6,4,new TGeoCombiTrans(0.,0.,98.75,segrot)); // sandwich2
tv100->AddNode(tvep2,3,new TGeoCombiTrans(0.,0.,-98.75,segrot)); //epoxy
tv100->AddNode(tvep2,4,new TGeoCombiTrans(0.,0.,98.75,segrot)); //epoxy
tv100->AddNode(tvpr2,3,new TGeoCombiTrans(0.,0.,-98.75,segrot));//prepreg strip
tv100->AddNode(tvpr2,4,new TGeoCombiTrans(0.,0.,98.75,segrot));
//outer
tv100->AddNode(tv2,3,new TGeoCombiTrans(0.,0.,-177.925,segrot));//sandwich
tv100->AddNode(tv2,4,new TGeoCombiTrans(0.,0.,177.925,segrot));
tv100->AddNode(tvep1,3,new TGeoCombiTrans(0.,0.,-177.925,segrot));//epoxy
tv100->AddNode(tvep1,4,new TGeoCombiTrans(0.,0.,177.925,segrot));
tv100->AddNode(tvpr1,3,new TGeoCombiTrans(0.,0.,-177.925,segrot));//prepreg strip
tv100->AddNode(tvpr1,4,new TGeoCombiTrans(0.,0.,177.925,segrot));
//
// third segment - rotation 240 deg.
//
segrot = new TGeoRotation();
segrot->RotateZ(240.);
//
// central
tv100->AddNode(tv10,3,segrot); //sandwich
tv100->AddNode(tvep3,3,segrot);//epoxy
tv100->AddNode(tvpr3,3,segrot);//prepreg strip
// middle
tv100->AddNode(tv6,5,new TGeoCombiTrans(0.,0.,-98.75,segrot)); //sandwich1
tv100->AddNode(tv6,6,new TGeoCombiTrans(0.,0.,98.75,segrot)); // sandwich2
tv100->AddNode(tvep2,5,new TGeoCombiTrans(0.,0.,-98.75,segrot)); //epoxy
tv100->AddNode(tvep2,6,new TGeoCombiTrans(0.,0.,98.75,segrot)); //epoxy
tv100->AddNode(tvpr2,5,new TGeoCombiTrans(0.,0.,-98.75,segrot));//prepreg strip
tv100->AddNode(tvpr2,6,new TGeoCombiTrans(0.,0.,98.75,segrot));
//outer
tv100->AddNode(tv2,5,new TGeoCombiTrans(0.,0.,-177.925,segrot));//sandwich
tv100->AddNode(tv2,6,new TGeoCombiTrans(0.,0.,177.925,segrot));
tv100->AddNode(tvep1,5,new TGeoCombiTrans(0.,0.,-177.925,segrot));//epoxy
tv100->AddNode(tvep1,6,new TGeoCombiTrans(0.,0.,177.925,segrot));
tv100->AddNode(tvpr1,5,new TGeoCombiTrans(0.,0.,-177.925,segrot));//prepreg strip
tv100->AddNode(tvpr1,6,new TGeoCombiTrans(0.,0.,177.925,segrot));
// Al parts - rings
tv100->AddNode(tv1,1,new TGeoTranslation(0.,0.,-252.85));
tv100->AddNode(tv1,2,new TGeoTranslation(0.,0.,252.85));
//
v5->AddNode(v6,1, new TGeoTranslation(0.,0.,-252.1));
v5->AddNode(v6,2, new TGeoTranslation(0.,0.,252.1));
v1->AddNode(v5,1); v1->AddNode(v7,1); v1->AddNode(v8,1);
v1->AddNode(hvsm,1,new TGeoTranslation(0.,0.,-163.8));
v1->AddNode(hvss,1,new TGeoTranslation(0.,0.,163.8));
v9->AddNode(tv100,1);
//
// central drum
//
// flange + sandwich
//
TGeoPcon *cfl = new TGeoPcon(0.,360.,6);
cfl->DefineSection(0,-71.1,59.7,61.2);
cfl->DefineSection(1,-68.6,59.7,61.2);
//
cfl->DefineSection(2,-68.6,60.6124,61.2);
cfl->DefineSection(3,68.6,60.6124,61.2);
//
cfl->DefineSection(4,68.6,59.7,61.2);
cfl->DefineSection(5,71.1,59.7,61.2);
//
TGeoVolume *cflv = new TGeoVolume("TPC_CDR",cfl,m3);
// sandwich
TGeoTubeSeg *cd1 = new TGeoTubeSeg(60.6224,61.19,71.1,0.1,119.9);
TGeoTubeSeg *cd2 = new TGeoTubeSeg(60.6262,61.1862,71.1,0.1,119.9);
TGeoTubeSeg *cd3 = new TGeoTubeSeg(60.6462,61.1662,71.1,0.1,119.9);
TGeoTubeSeg *cd4 = new TGeoTubeSeg(60.6562,61.1562,71.1,0.1,119.9);
TGeoTubeSeg *tepox4 = new TGeoTubeSeg(60.6224,61.19,71.1,359.9,0.1);
// TGeoTube *cd1 = new TGeoTube(60.6224,61.19,71.1);
// TGeoTube *cd2 = new TGeoTube(60.6262,61.1862,71.1);
// TGeoTube *cd3 = new TGeoTube(60.6462,61.1662,71.1);
// TGeoTube *cd4 = new TGeoTube(60.6562,61.1562,71.1);
//
TGeoMedium *sm6 = gGeoManager->GetMedium("TPC_Prepreg1");
TGeoMedium *sm8 = gGeoManager->GetMedium("TPC_Epoxyfm");
TGeoVolume *cd1v = new TGeoVolume("TPC_CDR1",cd1,sm2); //tedlar
TGeoVolume *cd2v = new TGeoVolume("TPC_CDR2",cd2,sm6);// prepreg1
TGeoVolume *cd3v = new TGeoVolume("TPC_CDR3",cd3,sm8); //epoxy film
TGeoVolume *cd4v = new TGeoVolume("TPC_CDR4",cd4,sm4); //nomex
TGeoVolume *tvep4 = new TGeoVolume("TPC_IFEPOX4",tepox4,sm1);
//
// seals for central drum 2 copies
//
TGeoTube *cs = new TGeoTube(56.9,61.2,0.1);
TGeoMedium *sm7 = gGeoManager->GetMedium("TPC_Mylar");
TGeoVolume *csv = new TGeoVolume("TPC_CDRS",cs,sm7);
v1->AddNode(csv,1,new TGeoTranslation(0.,0.,-71.2));
v1->AddNode(csv,2,new TGeoTranslation(0.,0.,71.2));
//
// seal collars
TGeoPcon *se = new TGeoPcon(0.,360.,6);
se->DefineSection(0,-72.8,59.7,61.2);
se->DefineSection(1,-72.3,59.7,61.2);
//
se->DefineSection(2,-72.3,58.85,61.2);
se->DefineSection(3,-71.6,58.85,61.2);
//
se->DefineSection(4,-71.6,59.7,61.2);
se->DefineSection(5,-71.3,59.7,61.2);
//
TGeoVolume *sev = new TGeoVolume("TPC_CDCE",se,m3);
//
TGeoTube *si = new TGeoTube(56.9,58.8,1.);
TGeoVolume *siv = new TGeoVolume("TPC_CDCI",si,m3);
//
// define reflection matrix
//
TGeoRotation *ref = new TGeoRotation("ref",90.,0.,90.,90.,180.,0.);
//
cd1v->AddNode(cd2v,1); cd2v->AddNode(cd3v,1); cd3v->AddNode(cd4v,1); //sandwich
// first segment
cflv->AddNode(cd1v,1); cflv->AddNode(tvep4,1);
// second segment
segrot = new TGeoRotation();
segrot->RotateZ(120.);
cflv->AddNode(cd1v,2,segrot); cflv->AddNode(tvep4,2,segrot);
// third segment
segrot = new TGeoRotation();
segrot->RotateZ(240.);
cflv->AddNode(cd1v,3,segrot); cflv->AddNode(tvep4,3,segrot);
//
v1->AddNode(siv,1,new TGeoTranslation(0.,0.,-69.9));
v1->AddNode(siv,2,new TGeoTranslation(0.,0.,69.9));
v1->AddNode(sev,1); v1->AddNode(sev,2,ref); v1->AddNode(cflv,1);
//
// central membrane - 2 rings and a mylar membrane - assembly
//
TGeoTube *ih = new TGeoTube(81.05,84.05,0.3);
TGeoTube *oh = new TGeoTube(250.,256.,0.5);
TGeoTube *mem = new TGeoTube(84.05,250.,0.00115);
//
TGeoMedium *m4 = gGeoManager->GetMedium("TPC_G10");
//
TGeoVolume *ihv = new TGeoVolume("TPC_IHVH",ih,m3);
TGeoVolume *ohv = new TGeoVolume("TPC_OHVH",oh,m3);
TGeoVolume *memv = new TGeoVolume("TPC_HV",mem,sm7);
//
TGeoVolumeAssembly *cm = new TGeoVolumeAssembly("TPC_HVMEM");
cm->AddNode(ihv,1);
cm->AddNode(ohv,1);
cm->AddNode(memv,1);
v9->AddNode(cm,1);
//
// end caps - they are make as an assembly of single segments
// containing both readout chambers
//
Double_t openingAngle = 10.*TMath::DegToRad();
Double_t thick=1.5; // rib
Double_t shift = thick/TMath::Sin(openingAngle);
//
Double_t lowEdge = 86.3; // hole in the wheel
Double_t upEdge = 240.4; // hole in the wheel
//
new TGeoTubeSeg("sec",74.5,264.4,3.,0.,20.);
//
TGeoPgon *hole = new TGeoPgon("hole",0.,20.,1,4);
//
hole->DefineSection(0,-3.5,lowEdge-shift,upEdge-shift);
hole->DefineSection(1,-1.5,lowEdge-shift,upEdge-shift);
//
hole->DefineSection(2,-1.5,lowEdge-shift,upEdge+3.-shift);
hole->DefineSection(3,3.5,lowEdge-shift,upEdge+3.-shift);
//
Double_t ys = shift*TMath::Sin(openingAngle);
Double_t xs = shift*TMath::Cos(openingAngle);
TGeoTranslation *tr = new TGeoTranslation("tr",xs,ys,0.);
tr->RegisterYourself();
TGeoCompositeShape *chamber = new TGeoCompositeShape("sec-hole:tr");
TGeoVolume *sv = new TGeoVolume("TPC_WSEG",chamber,m3);
TGeoPgon *bar = new TGeoPgon("bar",0.,20.,1,2);
bar->DefineSection(0,-3.,131.5-shift,136.5-shift);
bar->DefineSection(1,1.5,131.5-shift,136.5-shift);
TGeoVolume *barv = new TGeoVolume("TPC_WBAR",bar,m3);
TGeoVolumeAssembly *ch = new TGeoVolumeAssembly("TPC_WCH");//empty segment
//
ch->AddNode(sv,1); ch->AddNode(barv,1,tr);
//
// readout chambers
//
// IROC first
//
TGeoTrd1 *ibody = new TGeoTrd1(13.8742,21.3328,4.29,21.15);
TGeoVolume *ibdv = new TGeoVolume("TPC_IROCB",ibody,m3);
// empty space
TGeoTrd1 *emp = new TGeoTrd1(12.3742,19.8328,3.99,19.65);
TGeoVolume *empv = new TGeoVolume("TPC_IROCE",emp,m1);
ibdv->AddNode(empv,1,new TGeoTranslation(0.,-0.3,0.));
//bars
Double_t tga = (19.8328-12.3742)/39.3;
Double_t xmin,xmax;
xmin = 9.55*tga+12.3742;
xmax = 9.95*tga+12.3742;
TGeoTrd1 *ib1 = new TGeoTrd1(xmin,xmax,3.29,0.2);
TGeoVolume *ib1v = new TGeoVolume("TPC_IRB1",ib1,m3);
empv->AddNode(ib1v,1,new TGeoTranslation("tt1",0.,0.7,-9.9));
xmin=19.4*tga+12.3742;
xmax=19.9*tga+12.3742;
TGeoTrd1 *ib2 = new TGeoTrd1(xmin,xmax,3.29,0.25);
TGeoVolume *ib2v = new TGeoVolume("TPC_TRB2",ib2,m3);
empv->AddNode(ib2v,1,new TGeoTranslation(0.,0.7,0.));
xmin=29.35*tga+12.3742;
xmax=29.75*tga+12.3742;
TGeoTrd1 *ib3 = new TGeoTrd1(xmin,xmax,3.29,0.2);
TGeoVolume *ib3v = new TGeoVolume("TPC_IRB3",ib3,m3);
empv->AddNode(ib3v,1,new TGeoTranslation(0.,0.7,9.9));
//
// holes for connectors
//
TGeoBBox *conn = new TGeoBBox(0.4,0.3,4.675); // identical for iroc and oroc
TGeoVolume *connv = new TGeoVolume("TPC_RCCON",conn,m1);
TString fileName(gSystem->Getenv("ALICE_ROOT"));
fileName += "/TPC/conn_iroc.dat";
ifstream in;
in.open(fileName.Data(), ios_base::in); // asci file
TGeoRotation *rrr[86];
for(Int_t i =0;i<86;i++){
Double_t y = 3.99;
Double_t x,z,ang;
in>>x>>z>>ang;
z-=26.5;
rrr[i]= new TGeoRotation();
rrr[i]->RotateY(ang);
ibdv->AddNode(connv,i+1,new TGeoCombiTrans(x,y,z,rrr[i]));
}
in.close();
// "cap"
new TGeoTrd1("icap",14.5974,23.3521,1.19,24.825);
// "hole"
new TGeoTrd1("ihole",13.8742,21.3328,1.2,21.15);
TGeoTranslation *tr1 = new TGeoTranslation("tr1",0.,0.,1.725);
tr1->RegisterYourself();
TGeoCompositeShape *ic = new TGeoCompositeShape("icap-ihole:tr1");
TGeoVolume *icv = new TGeoVolume("TPC_IRCAP",ic,m3);
//
// pad plane and wire fixations
//
TGeoTrd1 *pp = new TGeoTrd1(14.5974,23.3521,0.3,24.825); //pad+iso
TGeoVolume *ppv = new TGeoVolume("TPC_IRPP",pp,m4);
TGeoPara *f1 = new TGeoPara(.6,.5,24.825,0.,-10.,0.);
TGeoVolume *f1v = new TGeoVolume("TPC_IRF1",f1,m4);
TGeoPara *f2 = new TGeoPara(.6,.5,24.825,0.,10.,0.);
TGeoVolume *f2v = new TGeoVolume("TPC_IRF2",f2,m4);
//
TGeoVolumeAssembly *iroc = new TGeoVolumeAssembly("TPC_IROC");
//
iroc->AddNode(ibdv,1);
iroc->AddNode(icv,1,new TGeoTranslation(0.,3.1,-1.725));
iroc->AddNode(ppv,1,new TGeoTranslation(0.,4.59,-1.725));
tga =(23.3521-14.5974)/49.65;
Double_t xx = 24.825*tga+14.5974-0.6;
iroc->AddNode(f1v,1,new TGeoTranslation(-xx,5.39,-1.725));
iroc->AddNode(f2v,1,new TGeoTranslation(xx,5.39,-1.725));
//
// OROC
//
TGeoTrd1 *obody = new TGeoTrd1(22.2938,40.5084,4.19,51.65);
TGeoVolume *obdv = new TGeoVolume("TPC_OROCB",obody,m3);
TGeoTrd1 *oemp = new TGeoTrd1(20.2938,38.5084,3.89,49.65);
TGeoVolume *oempv = new TGeoVolume("TPC_OROCE",oemp,m1);
obdv->AddNode(oempv,1,new TGeoTranslation(0.,-0.3,0.));
//horizontal bars
tga=(38.5084-20.2938)/99.3;
xmin=tga*10.2+20.2938;
xmax=tga*10.6+20.2938;
TGeoTrd1 *ob1 = new TGeoTrd1(xmin,xmax,2.915,0.2);
TGeoVolume *ob1v = new TGeoVolume("TPC_ORB1",ob1,m3);
//
xmin=22.55*tga+20.2938;
xmax=24.15*tga+20.2938;
TGeoTrd1 *ob2 = new TGeoTrd1(xmin,xmax,2.915,0.8);
TGeoVolume *ob2v = new TGeoVolume("TPC_ORB2",ob2,m3);
//
xmin=36.1*tga+20.2938;
xmax=36.5*tga+20.2938;
TGeoTrd1 *ob3 = new TGeoTrd1(xmin,xmax,2.915,0.2);
TGeoVolume *ob3v = new TGeoVolume("TPC_ORB3",ob3,m3);
//
xmin=49.0*tga+20.2938;
xmax=50.6*tga+20.2938;
TGeoTrd1 *ob4 = new TGeoTrd1(xmin,xmax,2.915,0.8);
TGeoVolume *ob4v = new TGeoVolume("TPC_ORB4",ob4,m3);
//
xmin=63.6*tga+20.2938;
xmax=64.0*tga+20.2938;
TGeoTrd1 *ob5 = new TGeoTrd1(xmin,xmax,2.915,0.2);
TGeoVolume *ob5v = new TGeoVolume("TPC_ORB5",ob5,m3);
//
xmin=75.5*tga+20.2938;
xmax=77.15*tga+20.2938;
TGeoTrd1 *ob6 = new TGeoTrd1(xmin,xmax,2.915,0.8);
TGeoVolume *ob6v = new TGeoVolume("TPC_ORB6",ob6,m3);
//
xmin=88.7*tga+20.2938;
xmax=89.1*tga+20.2938;
TGeoTrd1 *ob7 = new TGeoTrd1(xmin,xmax,2.915,0.2);
TGeoVolume *ob7v = new TGeoVolume("TPC_ORB7",ob7,m3);
//
oempv->AddNode(ob1v,1,new TGeoTranslation(0.,0.975,-39.25));
oempv->AddNode(ob2v,1,new TGeoTranslation(0.,0.975,-26.3));
oempv->AddNode(ob3v,1,new TGeoTranslation(0.,0.975,-13.35));
oempv->AddNode(ob4v,1,new TGeoTranslation(0.,0.975,0.15));
oempv->AddNode(ob5v,1,new TGeoTranslation(0.,0.975,14.15));
oempv->AddNode(ob6v,1,new TGeoTranslation(0.,0.975,26.7));
oempv->AddNode(ob7v,1,new TGeoTranslation(0.,0.975,39.25));
// vertical bars
TGeoBBox *ob8 = new TGeoBBox(0.8,2.915,5.1);
TGeoBBox *ob9 = new TGeoBBox(0.8,2.915,5.975);
TGeoBBox *ob10 = new TGeoBBox(0.8,2.915,5.775);
TGeoBBox *ob11 = new TGeoBBox(0.8,2.915,6.25);
TGeoBBox *ob12 = new TGeoBBox(0.8,2.915,6.5);
//
TGeoVolume *ob8v = new TGeoVolume("TPC_ORB8",ob8,m3);
TGeoVolume *ob9v = new TGeoVolume("TPC_ORB9",ob9,m3);
TGeoVolume *ob10v = new TGeoVolume("TPC_ORB10",ob10,m3);
TGeoVolume *ob11v = new TGeoVolume("TPC_ORB11",ob11,m3);
TGeoVolume *ob12v = new TGeoVolume("TPC_ORB12",ob12,m3);
//
oempv->AddNode(ob8v,1,new TGeoTranslation(0.,0.975,-44.55));
oempv->AddNode(ob8v,2,new TGeoTranslation(0.,0.975,44.55));
oempv->AddNode(ob9v,1,new TGeoTranslation(0.,0.975,-33.075));
oempv->AddNode(ob9v,2,new TGeoTranslation(0.,0.975,-19.525));
oempv->AddNode(ob10v,1,new TGeoTranslation(0.,0.975,20.125));
oempv->AddNode(ob10v,2,new TGeoTranslation(0.,0.975,33.275));
oempv->AddNode(ob11v,1,new TGeoTranslation(0.,0.975,-6.9));
oempv->AddNode(ob12v,1,new TGeoTranslation(0.,0.975,7.45));
//
// holes for connectors
//
fileName = gSystem->Getenv("ALICE_ROOT");
fileName += "/TPC/conn_oroc.dat";
in.open(fileName.Data(), ios_base::in); // asci file
TGeoRotation *rr[78];
for(Int_t i =0;i<78;i++){
Double_t y =3.89;
Double_t x,z,ang;
Double_t x1,z1,x2,z2;
in>>x>>z>>ang;
Double_t xr = 4.7*TMath::Sin(ang*TMath::DegToRad());
Double_t zr = 4.7*TMath::Cos(ang*TMath::DegToRad());
//
x1=xr+x; x2=-xr+x; z1=zr+z; z2 = -zr+z;
//
rr[i]= new TGeoRotation();
rr[i]->RotateY(ang);
z1-=54.95;
z2-=54.95;
//
obdv->AddNode(connv,i+1,new TGeoCombiTrans(x1,y,z1,rr[i]));
obdv->AddNode(connv,i+79,new TGeoCombiTrans(x2,y,z2,rr[i]));
}
in.close();
// cap
new TGeoTrd1("ocap",23.3874,43.5239,1.09,57.1);
new TGeoTrd1("ohole",22.2938,40.5084,1.09,51.65);
TGeoTranslation *tr5 = new TGeoTranslation("tr5",0.,0.,-2.15);
tr5->RegisterYourself();
TGeoCompositeShape *oc = new TGeoCompositeShape("ocap-ohole:tr5");
TGeoVolume *ocv = new TGeoVolume("TPC_ORCAP",oc,m3);
//
// pad plane and wire fixations
//
TGeoTrd1 *opp = new TGeoTrd1(23.3874,43.5239,0.3,57.1);
TGeoVolume *oppv = new TGeoVolume("TPC_ORPP",opp,m4);
//
tga=(43.5239-23.3874)/114.2;
TGeoPara *f3 = new TGeoPara(.7,.6,57.1,0.,-10.,0.);
TGeoPara *f4 = new TGeoPara(.7,.6,57.1,0.,10.,0.);
xx = 57.1*tga+23.3874-0.7;
TGeoVolume *f3v = new TGeoVolume("TPC_ORF1",f3,m4);
TGeoVolume *f4v = new TGeoVolume("TPC_ORF2",f4,m4);
//
TGeoVolumeAssembly *oroc = new TGeoVolumeAssembly("TPC_OROC");
//
oroc->AddNode(obdv,1);
oroc->AddNode(ocv,1,new TGeoTranslation(0.,3.1,2.15));
oroc->AddNode(oppv,1,new TGeoTranslation(0.,4.49,2.15));
oroc->AddNode(f3v,1,new TGeoTranslation(-xx,5.39,2.15));
oroc->AddNode(f4v,1,new TGeoTranslation(xx,5.39,2.15));
//
// now iroc and oroc are placed into a sector...
//
TGeoVolumeAssembly *secta = new TGeoVolumeAssembly("TPC_SECT"); // a-side
TGeoVolumeAssembly *sectc = new TGeoVolumeAssembly("TPC_SECT"); // c-side
TGeoRotation rot1("rot1",90.,90.,0.);
TGeoRotation rot2("rot2");
rot2.RotateY(10.);
TGeoRotation *rot = new TGeoRotation("rot");
*rot=rot1*rot2;
//
Double_t x0,y0;
x0=110.2*TMath::Cos(openingAngle);
y0=110.2*TMath::Sin(openingAngle);
TGeoCombiTrans *combi1a = new TGeoCombiTrans("combi1",x0,y0,1.09+0.195,rot); //a-side
TGeoCombiTrans *combi1c = new TGeoCombiTrans("combi1",x0,y0,1.09+0.222,rot); //c-side
x0=188.45*TMath::Cos(openingAngle);
y0=188.45*TMath::Sin(openingAngle);
TGeoCombiTrans *combi2a = new TGeoCombiTrans("combi2",x0,y0,0.99+0.195,rot); //a-side
TGeoCombiTrans *combi2c = new TGeoCombiTrans("combi2",x0,y0,0.99+0.222,rot); //c-side
//
//
// A-side
//
secta->AddNode(ch,1);
secta->AddNode(iroc,1,combi1a);
secta->AddNode(oroc,1,combi2a);
//
// C-side
//
sectc->AddNode(ch,1);
sectc->AddNode(iroc,1,combi1c);
sectc->AddNode(oroc,1,combi2c);
//
// now I try to make wheels...
//
TGeoVolumeAssembly *wheela = new TGeoVolumeAssembly("TPC_ENDCAP");
TGeoVolumeAssembly *wheelc = new TGeoVolumeAssembly("TPC_ENDCAP");
//
TGeoRotation *rwh[18];
for(Int_t i =0;i<18;i++){
Double_t phi = (20.*i);
rwh[i]=new TGeoRotation();
rwh[i]->RotateZ(phi);
wheela->AddNode(secta,i+1,rwh[i]);
wheelc->AddNode(sectc,i+1,rwh[i]);
}
// wheels in the drift volume!
TGeoCombiTrans *combi3 = new TGeoCombiTrans("combi3",0.,0.,256.6,ref);
v9->AddNode(wheela,1,combi3);
v9->AddNode(wheelc,2,new TGeoTranslation(0.,0.,-256.6));
//_____________________________________________________________
// service support wheel
//_____________________________________________________________
TGeoPgon *sw = new TGeoPgon(0.,20.,1,2);
sw->DefineSection(0,-4.,80.5,251.75);
sw->DefineSection(1,4.,80.5,251.75);
TGeoVolume *swv = new TGeoVolume("TPC_SWSEG",sw,m3); //Al
//
thick=1.;
shift = thick/TMath::Sin(openingAngle);
TGeoPgon *sh = new TGeoPgon(0.,20.,1,2);
sh->DefineSection(0,-4.,81.5-shift,250.75-shift);
sh->DefineSection(1,4.,81.5-shift,250.75-shift);
TGeoVolume *shv = new TGeoVolume("TPC_SWS1",sh,m1); //Air
//
TGeoMedium *m9 = gGeoManager->GetMedium("TPC_Si");
TGeoPgon *el = new TGeoPgon(0.,20.,1,2);
el->DefineSection(0,-1.872,81.5-shift,250.75-shift);
el->DefineSection(1,1.872,81.5-shift,250.75-shift);
TGeoVolume *elv = new TGeoVolume("TPC_ELEC",el,m9); //Si
//
shv->AddNode(elv,1);
//
//
ys = shift*TMath::Sin(openingAngle);
xs = shift*TMath::Cos(openingAngle);
swv->AddNode(shv,1,new TGeoTranslation(xs,ys,0.));
// cover
TGeoPgon *co = new TGeoPgon(0.,20.,1,2);
co->DefineSection(0,-0.5,77.,255.25);
co->DefineSection(1,0.5,77.,255.25);
TGeoVolume *cov = new TGeoVolume("TPC_SWC1",co,m3);//Al
// hole in a cover
TGeoPgon *coh = new TGeoPgon(0.,20.,1,2);
shift=4./TMath::Sin(openingAngle);
coh->DefineSection(0,-0.5,85.-shift,247.25-shift);
coh->DefineSection(1,0.5,85.-shift,247.25-shift);
//
TGeoVolume *cohv = new TGeoVolume("TPC_SWC2",coh,m1);
//
ys = shift*TMath::Sin(openingAngle);
xs = shift*TMath::Cos(openingAngle);
cov->AddNode(cohv,1,new TGeoTranslation(xs,ys,0.));
//
// Sector as an Assembly
//
TGeoVolumeAssembly *swhs = new TGeoVolumeAssembly("TPC_SSWSEC");
swhs->AddNode(swv,1);
swhs->AddNode(cov,1,new TGeoTranslation(0.,0.,-4.5));
swhs->AddNode(cov,2,new TGeoTranslation(0.,0.,4.5));
//
// SSW as an Assembly of sectors
//
TGeoRotation *rsw[18];
TGeoVolumeAssembly *swheel = new TGeoVolumeAssembly("TPC_SSWHEEL");
for(Int_t i =0;i<18;i++){
Double_t phi = (20.*i);
rsw[i] = new TGeoRotation();
rsw[i]->RotateZ(phi);
swheel->AddNode(swhs,i+1,rsw[i]);
}
v1->AddNode(swheel,1,new TGeoTranslation(0.,0.,-284.6));
v1->AddNode(swheel,2,new TGeoTranslation(0.,0.,284.6));
// sensitive strips - strip "0" is always set
// conditional
Int_t totrows;
totrows = fTPCParam->GetNRowLow() + fTPCParam->GetNRowUp();
Double_t *upar;
upar=NULL;
gGeoManager->Volume("TPC_Strip","PGON",m5->GetId(),upar);
upar=new Double_t [10];
upar[0]=0.;
upar[1]=360.;
upar[2]=18.;
upar[3]=2.;
//
upar[4]=-124.8;
upar[7]=124.8;
Double_t rlow=fTPCParam->GetPadRowRadiiLow(0);
upar[5]=rlow;
upar[6]=rlow+.01;
upar[8]=upar[5];
upar[9]=upar[6];
//
gGeoManager->Node("TPC_Strip",1,"TPC_Drift",0.,0.,124.82,0,kTRUE,upar,10);
gGeoManager->Node("TPC_Strip",totrows+1,
"TPC_Drift",0.,0.,-124.82,0,kTRUE,upar,10);
//
// now, strips optionally
//
if(fSens){
//lower sectors
for(Int_t i=2;iGetNRowLow()+1;i++){
rlow=fTPCParam->GetPadRowRadiiLow(i-1);
upar[5]=rlow;
upar[6]=rlow+.01;
upar[8]=upar[5];
upar[9]=upar[6];
gGeoManager->Node("TPC_Strip",i,
"TPC_Drift",0.,0.,124.82,0,kTRUE,upar,10);
gGeoManager->Node("TPC_Strip",totrows+i,
"TPC_Drift",0.,0.,-124.82,0,kTRUE,upar,10);
}
//upper sectors
for(Int_t i=1;iGetNRowUp()+1;i++){
rlow=fTPCParam->GetPadRowRadiiUp(i-1);
upar[5]=rlow;
upar[6]=rlow+.01;
upar[8]=upar[5];
upar[9]=upar[6];
gGeoManager->Node("TPC_Strip",i+fTPCParam->GetNRowLow(),
"TPC_Drift",0.,0.,124.82,0,kTRUE,upar,10);
gGeoManager->Node("TPC_Strip",totrows+i+fTPCParam->GetNRowLow(),
"TPC_Drift",0.,0.,-124.82,0,kTRUE,upar,10);
}
}//strips
//----------------------------------------------------------
// TPC Support Rods - MAKROLON
//----------------------------------------------------------
TGeoMedium *m6=gGeoManager->GetMedium("TPC_Makrolon");
TGeoMedium *m7=gGeoManager->GetMedium("TPC_Cu");
TGeoMedium *m10 = gGeoManager->GetMedium("TPC_Alumina");
TGeoMedium *m11 = gGeoManager->GetMedium("TPC_Peek");;
TGeoMedium *m13 = gGeoManager->GetMedium("TPC_Brass");
//
// tpc rod is an assembly of 10 long parts and 2 short parts
// connected with alu rings and plagged on both sides.
//
//
// tpc rod long
//
TGeoPcon *rod = new TGeoPcon("rod",0.,360.,6);
rod->DefineSection(0,-10.43,1.92,2.08);
rod->DefineSection(1,-9.75,1.92,2.08);
rod->DefineSection(2,-9.75,1.8,2.2);
rod->DefineSection(3,9.75,1.8,2.2);
rod->DefineSection(4,9.75,1.92,2.08);
rod->DefineSection(5,10.43,1.92,2.08);
//
TGeoVolume *mrodl = new TGeoVolume("TPC_mrodl",rod,m6);
//
// tpc rod short
//
TGeoPcon *rod1 = new TGeoPcon("rod1",0.,360.,6);
rod1->DefineSection(0,-8.93,1.92,2.08);
rod1->DefineSection(1,-8.25,1.92,2.08);
rod1->DefineSection(2,-8.25,1.8,2.2);
rod1->DefineSection(3,8.25,1.8,2.2);
rod1->DefineSection(4,8.25,1.92,2.08);
rod1->DefineSection(5,8.93,1.92,2.08);
//
TGeoVolume *mrods = new TGeoVolume("TPC_mrods",rod1,m6);
//
// below is for the resistor rod
//
// hole for the brass connectors
//
new TGeoTube("hhole",0.,0.3,0.3);
//
//transformations for holes - initialy they
// are placed at x=0 and negative y
//
TGeoRotation *rhole = new TGeoRotation();
rhole->RotateX(90.);
TGeoCombiTrans *transf[13];
Char_t name[30];
for(Int_t i=0;i<13;i++){
//sprintf(name,"transf%d",i);
snprintf(name,30,"transf%d",i);
transf[i]= new TGeoCombiTrans(name,0.,-2.,-9.+i*1.5,rhole);
transf[i]->RegisterYourself();
}
// union expression for holes
TString operl("hhole:transf0");
for (Int_t i=1;i<13;i++){
//sprintf(name,"+hhole:transf%d",i);
snprintf(name,30,"+hhole:transf%d",i);
operl.Append(name);
}
//
TString opers("hhole:transf1");
for (Int_t i=2;i<12;i++){
//sprintf(name,"+hhole:transf%d",i);
snprintf(name,30,"+hhole:transf%d",i);
opers.Append(name);
}
//union of holes
new TGeoCompositeShape("hlv",operl.Data());
new TGeoCompositeShape("hsv",opers.Data());
//
TGeoCompositeShape *rodl = new TGeoCompositeShape("rodl","rod-hlv");
TGeoCompositeShape *rods = new TGeoCompositeShape("rods","rod1-hsv");
//rods - volumes - makrolon rods with holes
TGeoVolume *rodlv = new TGeoVolume("TPC_rodl",rodl,m6);
TGeoVolume *rodsv = new TGeoVolume("TPC_rods",rods,m6);
//brass connectors
//connectors
TGeoTube *bcon = new TGeoTube(0.,0.3,0.3);//connectors
TGeoVolume *bconv = new TGeoVolume("TPC_bcon",bcon,m13);
//
// hooks holding strips
//
new TGeoBBox("hk1",0.625,0.015,0.75);
new TGeoBBox("hk2",0.625,0.015,0.15);
TGeoTranslation *tr21 = new TGeoTranslation("tr21",0.,-0.03,-0.6);
TGeoTranslation *tr12 = new TGeoTranslation("tr12",0.,-0.03,0.6);
tr21->RegisterYourself();
tr12->RegisterYourself();
TGeoCompositeShape *hook = new TGeoCompositeShape("hook","hk1+hk2:tr21+hk2:tr12");
TGeoVolume *hookv = new TGeoVolume("TPC_hook",hook,m13);
//
// assembly of the short rod with connectors and hooks
//
//
// short rod
//
TGeoVolumeAssembly *spart = new TGeoVolumeAssembly("TPC_spart");
//
spart->AddNode( rodsv,1);
for(Int_t i=1;i<12;i++){
spart->AddNode(bconv,i,transf[i]);
}
for(Int_t i =0;i<11;i++){
spart->AddNode(hookv,i+1,new TGeoTranslation(0.,-2.315,-7.5+i*1.5));
}
//
// long rod
//
TGeoVolumeAssembly *lpart = new TGeoVolumeAssembly("TPC_lpart");
//
lpart->AddNode( rodlv,1);
for(Int_t i=0;i<13;i++){
lpart->AddNode(bconv,i+12,transf[i]);
}
for(Int_t i =0;i<13;i++){
lpart->AddNode(hookv,i+12,new TGeoTranslation(0.,-2.315,-9.+i*1.5));
}
//
// alu ring
//
new TGeoTube("ring1",2.1075,2.235,0.53);
new TGeoTube("ring2",1.7925,1.89,0.43);
new TGeoTube("ring3",1.89,2.1075,0.05);
TGeoCompositeShape *ring = new TGeoCompositeShape("ring","ring1+ring2+ring3");
TGeoVolume *ringv = new TGeoVolume("TPC_ring",ring,m3);
//
// rod assembly
//
TGeoVolumeAssembly *tpcrrod = new TGeoVolumeAssembly("TPC_rrod");//rrod
TGeoVolumeAssembly *tpcmrod = new TGeoVolumeAssembly("TPC_mrod");//makrolon rod
//long pieces
for(Int_t i=0;i<11;i++){
tpcrrod->AddNode(ringv,i+1,new TGeoTranslation(0.,0.,-105.+i*21));
tpcmrod->AddNode(ringv,i+12,new TGeoTranslation(0.,0.,-105.+i*21));
}
for(Int_t i=0;i<10;i++){
tpcrrod->AddNode(lpart,i+1,new TGeoTranslation(0.,0.,-94.5+i*21));
tpcmrod->AddNode(mrodl,i+1,new TGeoTranslation(0.,0.,-94.5+i*21));
}
//
// short pieces
//
tpcrrod->AddNode(spart,1,new TGeoTranslation(0.,0.,-114.));
tpcrrod->AddNode(spart,2,new TGeoTranslation(0.,0.,114.));
tpcrrod->AddNode(ringv,23,new TGeoTranslation(0.,0.,-123.));
tpcrrod->AddNode(ringv,24,new TGeoTranslation(0.,0.,123.));
//
tpcmrod->AddNode(mrods,1,new TGeoTranslation(0.,0.,-114.));
tpcmrod->AddNode(mrods,2,new TGeoTranslation(0.,0.,114.));
tpcmrod->AddNode(ringv,25,new TGeoTranslation(0.,0.,-123.));
tpcmrod->AddNode(ringv,26,new TGeoTranslation(0.,0.,123.));
//
// left plaque
//
TGeoPcon *lp = new TGeoPcon(0.,360.,4);
//
lp->DefineSection(0,-125.8,1.92,2.235);
lp->DefineSection(1,-124.8,1.92,2.235);
//
lp->DefineSection(2,-124.8,1.92,2.08);
lp->DefineSection(3,-123.1,1.92,2.08);
//
TGeoVolume *lpv1 = new TGeoVolume("TPC_lpv1",lp,m6);
TGeoVolume *lpv2 = new TGeoVolume("TPC_lpv2",lp,m6);
// left ring
TGeoTube *lr = new TGeoTube(2.1075,2.235,0.5);
TGeoVolume *lrv = new TGeoVolume("TPC_lrv",lr,m3);
//
lpv2->AddNode(lrv,1,new TGeoTranslation(0.,0.,-125.3));
//
tpcrrod->AddNode(lpv2,1);
tpcmrod->AddNode(lpv1,1);
//
// right plaque
//
TGeoTube *rp = new TGeoTube(1.92,2.08,2.025);
TGeoVolume *rpv = new TGeoVolume("TPC_rpv",rp,m6);
tpcrrod->AddNode(rpv,1, new TGeoTranslation(0.,0.,125.125));
tpcmrod->AddNode(rpv,2,new TGeoTranslation(0.,0.,125.125));
//
//
//HV rods - makrolon + 0.58cm (diameter) Cu
TGeoTube *hvr = new TGeoTube(0.,1.465,126.5);
TGeoTube *hvc = new TGeoTube(0.,0.29,126.5);
//
TGeoVolume *hvrv = new TGeoVolume("TPC_HV_Rod",hvr,m6);
TGeoVolume *hvcv = new TGeoVolume("TPC_HV_Cable",hvc,m7);
hvrv->AddNode(hvcv,1);
//
//resistor rod
//
TGeoTube *cr = new TGeoTube(0.,0.45,126.2);
TGeoTube *cw = new TGeoTube(0.,0.15,126.2);
TGeoVolume *crv = new TGeoVolume("TPC_CR",cr,m10);
TGeoVolume *cwv = new TGeoVolume("TPC_W",cw,m12);
//
// ceramic rod with water
//
crv->AddNode(cwv,1);
//
//peek rod
//
TGeoTube *pr =new TGeoTube(0.2,0.35,126.2);
TGeoVolume *prv = new TGeoVolume("TPC_PR",pr,m11);
//
// copper plates with connectors
//
new TGeoTube("tub",0.,1.7,0.025);
//
// half space - points on the plane and a normal vector
//
Double_t n[3],p[3];
Double_t slope = TMath::Tan(22.*TMath::DegToRad());
Double_t intp = 1.245;
//
Double_t b = slope*slope+1.;
p[0]=intp*slope/b;
p[1]=-intp/b;
p[2]=0.;
//
n[0]=-p[0];
n[1]=-p[1];
n[2]=0.;
Double_t norm;
norm=TMath::Sqrt(n[0]*n[0]+n[1]*n[1]);
n[0] /= norm;
n[1] /=norm;
//
new TGeoHalfSpace("sp1",p,n);
//
slope = -slope;
//
p[0]=intp*slope/b;
p[1]=-intp/b;
//
n[0]=-p[0];
n[1]=-p[1];
norm=TMath::Sqrt(n[0]*n[0]+n[1]*n[1]);
n[0] /= norm;
n[1] /=norm;
//
new TGeoHalfSpace("sp2",p,n);
// holes for rods
//holes
new TGeoTube("h1",0.,0.5,0.025);
new TGeoTube("h2",0.,0.35,0.025);
//translations:
TGeoTranslation *ttr11 = new TGeoTranslation("ttr11",-0.866,0.5,0.);
TGeoTranslation *ttr22 = new TGeoTranslation("ttr22",0.866,0.5,0.);
ttr11->RegisterYourself();
ttr22->RegisterYourself();
// elastic connector
new TGeoBBox("elcon",0.72,0.005,0.3);
TGeoRotation *crr1 = new TGeoRotation();
crr1->RotateZ(-22.);
TGeoCombiTrans *ctr1 = new TGeoCombiTrans("ctr1",-0.36011, -1.09951,-0.325,crr1);
ctr1->RegisterYourself();
TGeoCompositeShape *cs1 = new TGeoCompositeShape("cs1",
"(((((tub-h1:ttr11)-h1:ttr22)-sp1)-sp2)-h2)+elcon:ctr1");
//
TGeoVolume *csvv = new TGeoVolume("TPC_RR_CU",cs1,m7);
//
// resistor rod assembly 2 ceramic rods, peak rod, Cu plates
// and resistors
//
TGeoVolumeAssembly *rrod = new TGeoVolumeAssembly("TPC_RRIN");
// rods
rrod->AddNode(crv,1,ttr11);
rrod->AddNode(crv,2,ttr22);
rrod->AddNode(prv,1);
//Cu plates
for(Int_t i=0;i<165;i++){
rrod->AddNode(csvv,i+1,new TGeoTranslation(0.,0.,-122.675+i*1.5));
}
//resistors
TGeoTube *res = new TGeoTube(0.,0.15,0.5);
TGeoVolume *resv = new TGeoVolume("TPC_RES",res,m10);
TGeoVolumeAssembly *ress = new TGeoVolumeAssembly("TPC_RES_CH");
ress->AddNode(resv,1,new TGeoTranslation(0.2,0.,0.));
ress->AddNode(resv,2,new TGeoTranslation(-0.2,0.,0.));
//
TGeoRotation *crr2 = new TGeoRotation();
crr2->RotateY(30.);
TGeoRotation *crr3 = new TGeoRotation();
crr3->RotateY(-30.);
//
for(Int_t i=0;i<164;i+=2){
rrod->AddNode(ress,i+1, new TGeoCombiTrans(0.,1.2,-121.925+i*1.5,crr2));
rrod->AddNode(ress,i+2, new TGeoCombiTrans(0.,1.2,-121.925+(i+1)*1.5,crr3));
}
tpcrrod->AddNode(rrod,1,new TGeoCombiTrans(0.,0.,0.5,crr1));
//
// guard ring resistor chain
//
TGeoTube *gres1 = new TGeoTube(0.,0.375,125.);// inside ifc
//
TGeoVolume *vgres1 = new TGeoVolume("TPC_GRES1",gres1,m10);
//
Double_t xrc,yrc;
//
xrc=79.3*TMath::Cos(350.*TMath::DegToRad());
yrc=79.3*TMath::Sin(350.*TMath::DegToRad());
//
v9->AddNode(vgres1,1,new TGeoTranslation(xrc,yrc,126.9));
v9->AddNode(vgres1,2,new TGeoTranslation(xrc,yrc,-126.9));
//
xrc=79.3*TMath::Cos(190.*TMath::DegToRad());
yrc=79.3*TMath::Sin(190.*TMath::DegToRad());
//
v9->AddNode(vgres1,3,new TGeoTranslation(xrc,yrc,126.9));
v9->AddNode(vgres1,4,new TGeoTranslation(xrc,yrc,-126.9));
//------------------------------------------------------------------
TGeoRotation refl("refl",90.,0.,90.,90.,180.,0.);
TGeoRotation rotrod("rotrod");
//
TGeoRotation *rotpos[2];
//
TGeoRotation *rotrod1[2];
TGeoTubeSeg *irh = new TGeoTubeSeg(78.825,79.25,1.5,358.5,1.5);
TGeoTubeSeg *orh = new TGeoTubeSeg(256.5,257.95,1.5,359.5,0.5);
TGeoTubeSeg *ohh = new TGeoTubeSeg(256.5,257.95,1.5,9.5,10.5);
TGeoVolume *irhv = new TGeoVolume("TPC_IRHH",irh,m4);
TGeoVolume *orhv = new TGeoVolume("TPC_ORHH",orh,m4);
TGeoVolume *ohhv = new TGeoVolume("TPC_OHVHH",ohh,m4);
//v9 - drift gas
for(Int_t i=0;i<18;i++){
Double_t angle,x,y;
Double_t z,r;
angle=TMath::DegToRad()*20.*(Double_t)i;
TGeoRotation *roth = new TGeoRotation(); //rotation for rod holders
roth->RotateZ(angle);
//inner rods
r=81.5;
x=r * TMath::Cos(angle);
y=r * TMath::Sin(angle);
z = 126.1;
//
v9->AddNode(irhv,i+1,roth);
v9->AddNode(orhv,i+1,roth);
v9->AddNode(ohhv,i+1,roth);
//
if(i==11){//resistor rod inner
rotrod.RotateZ(-90.+angle);
rotrod1[0]= new TGeoRotation();
rotpos[0]= new TGeoRotation();
//
rotrod1[0]->RotateZ(-90.+angle);
*rotpos[0] = refl*rotrod; //rotation+reflection
v9->AddNode(tpcrrod,1,new TGeoCombiTrans(x,y, z, rotrod1[0])); //A
v9->AddNode(tpcrrod,2,new TGeoCombiTrans(x,y,-z, rotpos[0])); //C
}
else {
v9->AddNode(tpcmrod,i+1,new TGeoTranslation(x,y,z));//shaft
v9->AddNode(tpcmrod,i+19,new TGeoCombiTrans(x,y,-z,ref));//muon
}
// outer rods
r=254.25;
x=r * TMath::Cos(angle);
y=r * TMath::Sin(angle);
z=126.3;
//
if(i==3){//resistor rod outer
rotrod.RotateZ(90.+angle);
rotrod1[1]= new TGeoRotation();
rotpos[1]= new TGeoRotation();
rotrod1[1]->RotateZ(90.+angle);
*rotpos[1] = refl*rotrod;//rotation+reflection
v9->AddNode(tpcrrod,3,new TGeoCombiTrans(x,y, z, rotrod1[1])); //A
v9->AddNode(tpcrrod,4,new TGeoCombiTrans(x,y, -z, rotpos[1])); //C
}
else {
v9->AddNode(tpcmrod,i+37,new TGeoTranslation(x,y,z));//shaft
v9->AddNode(tpcmrod,i+55,new TGeoCombiTrans(x,y,-z,ref));//muon
}
if(i==15){
v9->AddNode(hvrv,1,new TGeoTranslation(x,y,z+0.7)); //hv->A-side only
}
} //end of rods positioning
TGeoVolume *alice = gGeoManager->GetVolume("ALIC");
alice->AddNode(v1,1);
} // end of function
//_____________________________________________________________________________
void AliTPCv2::AddAlignableVolumes() const
{
//
// Create entries for alignable volumes associating the symbolic volume
// name with the corresponding volume path. Needs to be syncronized with
// eventual changes in the geometry.
//
SetInnerChambersAlignable();
SetOuterChambersAlignable();
}
//_____________________________________________________________________________
void AliTPCv2::SetInnerChambersAlignable() const
{
//
AliGeomManager::ELayerID idTPC1 = AliGeomManager::kTPC1;
Int_t modUID, modnum = 0;
TString vpstr1 = "ALIC_1/TPC_M_1/TPC_Drift_1/TPC_ENDCAP_1/TPC_SECT_";
TString vpstr2 = "ALIC_1/TPC_M_1/TPC_Drift_1/TPC_ENDCAP_2/TPC_SECT_";
TString vpappend = "/TPC_IROC_1";
TString snstr1="TPC/EndcapA/Sector";
TString snstr2="TPC/EndcapC/Sector";
TString snappend="/InnerChamber";
TString volpath, symname;
for(Int_t cnt=1; cnt<=18; cnt++){
modUID = AliGeomManager::LayerToVolUID(idTPC1,modnum++);
volpath = vpstr1;
volpath += cnt;
volpath += vpappend;
symname = snstr1;
symname += cnt;
symname += snappend;
if(!gGeoManager->SetAlignableEntry(symname.Data(),volpath.Data(),modUID))
AliFatal(Form("Alignable entry %s not created. Volume path %s not valid", symname.Data(),volpath.Data()));
TGeoPNEntry *alignableEntry = gGeoManager->GetAlignableEntryByUID(modUID);
TGeoHMatrix* globMatrix = alignableEntry->GetGlobalOrig();
TGeoHMatrix* matTtoL = fTPCParam->Tracking2LocalMatrix(globMatrix,cnt-1);
alignableEntry->SetMatrix(matTtoL);
}
for(Int_t cnt=1; cnt<=18; cnt++){
modUID = AliGeomManager::LayerToVolUID(idTPC1,modnum++);
volpath = vpstr2;
volpath += cnt;
volpath += vpappend;
symname = snstr2;
symname += cnt;
symname += snappend;
if(!gGeoManager->SetAlignableEntry(symname.Data(),volpath.Data(),modUID))
AliFatal(Form("Alignable entry %s not created. Volume path %s not valid", symname.Data(),volpath.Data()));
TGeoPNEntry *alignableEntry = gGeoManager->GetAlignableEntryByUID(modUID);
TGeoHMatrix* globMatrix = alignableEntry->GetGlobalOrig();
TGeoHMatrix* matTtoL = fTPCParam->Tracking2LocalMatrix(globMatrix,18+cnt-1);
alignableEntry->SetMatrix(matTtoL);
}
}
//_____________________________________________________________________________
void AliTPCv2::SetOuterChambersAlignable() const
{
//
AliGeomManager::ELayerID idTPC2 = AliGeomManager::kTPC2;
Int_t modUID, modnum = 0;
TString vpstr1 = "ALIC_1/TPC_M_1/TPC_Drift_1/TPC_ENDCAP_1/TPC_SECT_";
TString vpstr2 = "ALIC_1/TPC_M_1/TPC_Drift_1/TPC_ENDCAP_2/TPC_SECT_";
TString vpappend = "/TPC_OROC_1";
TString snstr1="TPC/EndcapA/Sector";
TString snstr2="TPC/EndcapC/Sector";
TString snappend="/OuterChamber";
TString volpath, symname;
for(Int_t cnt=1; cnt<=18; cnt++){
modUID = AliGeomManager::LayerToVolUID(idTPC2,modnum++);
volpath = vpstr1;
volpath += cnt;
volpath += vpappend;
symname = snstr1;
symname += cnt;
symname += snappend;
if(!gGeoManager->SetAlignableEntry(symname.Data(),volpath.Data(),modUID))
AliFatal(Form("Alignable entry %s not created. Volume path %s not valid", symname.Data(),volpath.Data()));
TGeoPNEntry *alignableEntry = gGeoManager->GetAlignableEntryByUID(modUID);
TGeoHMatrix* globMatrix = alignableEntry->GetGlobalOrig();
TGeoHMatrix* matTtoL = fTPCParam->Tracking2LocalMatrix(globMatrix,36+cnt-1);
alignableEntry->SetMatrix(matTtoL);
}
for(Int_t cnt=1; cnt<=18; cnt++){
modUID = AliGeomManager::LayerToVolUID(idTPC2,modnum++);
volpath = vpstr2;
volpath += cnt;
volpath += vpappend;
symname = snstr2;
symname += cnt;
symname += snappend;
if(!gGeoManager->SetAlignableEntry(symname.Data(),volpath.Data(),modUID))
AliFatal(Form("Alignable entry %s not created. Volume path %s not valid", symname.Data(),volpath.Data()));
TGeoPNEntry *alignableEntry = gGeoManager->GetAlignableEntryByUID(modUID);
TGeoHMatrix* globMatrix = alignableEntry->GetGlobalOrig();
TGeoHMatrix* matTtoL = fTPCParam->Tracking2LocalMatrix(globMatrix,36+18+cnt-1);
alignableEntry->SetMatrix(matTtoL);
}
}
//_____________________________________________________________________________
void AliTPCv2::CreateMaterials()
{
//
// Define materials for version 2 of the Time Projection Chamber
//
AliTPC::CreateMaterials();
}
//_____________________________________________________________________________
void AliTPCv2::Init()
{
//
// Initialises version 2 of the TPC after that it has been built
//
Int_t *idtmed = fIdtmed->GetArray();
AliTPC::Init();
fIdSens=gMC->VolId("TPC_Strip"); // one strip is always selected...
fIDrift=gMC->VolId("TPC_Drift");
fSecOld=-100; // fake number
gMC->SetMaxNStep(-30000); // max. number of steps increased
if (fPrimaryIonisation) {
// for FLUKA
gMC->Gstpar(idtmed[2],"PRIMIO_E", 20.77); // 1st ionisation potential
gMC->Gstpar(idtmed[2],"PRIMIO_N", 14.35);
gMC->Gstpar(idtmed[2],"LOSS", 14); // specific energy loss
gMC->Gstpar(idtmed[2],"STRA",4);
}
// specific energy loss for geant3 is now defined in galice.cuts
AliDebug(1,"*** TPC version 2 initialized ***");
AliDebug(1,Form("Maximum number of steps = %d",gMC->GetMaxNStep()));
//
}
//_____________________________________________________________________________
void AliTPCv2::StepManager()
{
//
// Called for every step in the Time Projection Chamber
//
//
// parameters used for the energy loss calculations
//
const Float_t kprim = 14.35; // number of primary collisions per 1 cm
const Float_t kpoti = 20.77e-9; // first ionization potential for Ne/CO2
const Float_t kwIon = 35.97e-9; // energy for the ion-electron pair creation
const Int_t kMaxDistRef =15; // maximal difference between 2 stored references
const Float_t kbig = 1.e10;
Int_t id,copy;
Float_t hits[5];
Int_t vol[2];
TLorentzVector p;
vol[1]=0; // preset row number to 0
//
if (!fPrimaryIonisation) gMC->SetMaxStep(kbig);
if(!gMC->IsTrackAlive()) return; // particle has disappeared
Float_t charge = gMC->TrackCharge();
if(TMath::Abs(charge)<=0.) return; // take only charged particles
// check the sensitive volume
id = gMC->CurrentVolID(copy); // vol ID and copy number (starts from 1!)
if(id != fIDrift && id != fIdSens) return; // not in the sensitive folume
if ( fPrimaryIonisation && id == fIDrift ) {
Double_t rnd = gMC->GetRandom()->Rndm();
gMC->SetMaxStep(0.2+(2.*rnd-1.)*0.05); // 2 mm +- rndm*0.5mm step
}
//if ( fPrimaryIonisation && id == fIDrift && gMC->IsTrackEntering()) {
// gMC->SetMaxStep(0.2); // 2 mm
//}
gMC->TrackPosition(p);
Double_t r = TMath::Sqrt(p[0]*p[0]+p[1]*p[1]);
//
//
Double_t angle = TMath::ACos(p[0]/r);
angle = (p[1]<0.) ? TMath::TwoPi()-angle : angle;
//
// angular segment, it is not a real sector number...
//
Int_t sector=TMath::Nint((angle-fTPCParam->GetInnerAngleShift())/
fTPCParam->GetInnerAngle());
// rotate to segment "0"
Float_t cos,sin;
fTPCParam->AdjustCosSin(sector,cos,sin);
Float_t x1=p[0]*cos + p[1]*sin;
// check if within sector's limits
if((x1>=fTPCParam->GetInnerRadiusLow()&&x1<=fTPCParam->GetInnerRadiusUp())
||(x1>=fTPCParam->GetOuterRadiusLow()&&x1<=fTPCParam->GetOuterRadiusUp())){
// calculate real sector number...
if (x1>fTPCParam->GetOuterRadiusLow()){
sector = TMath::Nint((angle-fTPCParam->GetOuterAngleShift())/
fTPCParam->GetOuterAngle())+fTPCParam->GetNInnerSector();
if (p[2]<0) sector+=(fTPCParam->GetNOuterSector()>>1);
}
else
if (p[2]<0) sector+=(fTPCParam->GetNInnerSector()>>1);
//
// here I have a sector number
//
vol[0]=sector;
static Double_t lastReferenceR=0;
if (TMath::Abs(lastReferenceR-r)>kMaxDistRef){
AddTrackReference(gAlice->GetMCApp()->GetCurrentTrackNumber(), AliTrackReference::kTPC);
lastReferenceR = r;
}
// check if change of sector
if(sector != fSecOld){
fSecOld=sector;
// add track reference
AddTrackReference(gAlice->GetMCApp()->GetCurrentTrackNumber(), AliTrackReference::kTPC);
}
// track is in the sensitive strip
if(id == fIdSens){
// track is entering the strip
if (gMC->IsTrackEntering()){
Int_t totrows = fTPCParam->GetNRowLow()+fTPCParam->GetNRowUp();
vol[1] = (copy<=totrows) ? copy-1 : copy-1-totrows;
// row numbers are autonomous for lower and upper sectors
if(vol[0] > fTPCParam->GetNInnerSector()) {
vol[1] -= fTPCParam->GetNRowLow();
}
//
if(vol[0]GetNInnerSector()&&vol[1] == 0){
// lower sector, row 0, because Jouri wants to have this
gMC->TrackMomentum(p);
hits[0]=p[0];
hits[1]=p[1];
hits[2]=p[2];
hits[3]=0.; // this hit has no energy loss
// Get also the track time for pileup simulation
hits[4]=gMC->TrackTime();
AddHit(gAlice->GetMCApp()->GetCurrentTrackNumber(), vol,hits);
}
//
gMC->TrackPosition(p);
hits[0]=p[0];
hits[1]=p[1];
hits[2]=p[2];
hits[3]=0.; // this hit has no energy loss
// Get also the track time for pileup simulation
hits[4]=gMC->TrackTime();
AddHit(gAlice->GetMCApp()->GetCurrentTrackNumber(), vol,hits);
}
else return;
}
//-----------------------------------------------------------------
// charged particle is in the sensitive drift volume
//-----------------------------------------------------------------
if(gMC->TrackStep() > 0) {
Int_t nel=0;
if (!fPrimaryIonisation) {
nel = (Int_t)(((gMC->Edep())-kpoti)/kwIon) + 1;
}
else {
static Double_t deForNextStep = 0.;
// Geant4 (the meaning of Edep as in Geant3) - wrong
//nel = (Int_t)(((gMC->Edep())-kpoti)/kwIon) + 1;
// Geant4 (the meaning of Edep as in Geant3) - NEW
Double_t eAvailable = gMC->Edep() + deForNextStep;
nel = (Int_t)(eAvailable/kwIon);
deForNextStep = eAvailable - nel*kwIon;
}
nel=TMath::Min(nel,300); // 300 electrons corresponds to 10 keV
//
gMC->TrackPosition(p);
hits[0]=p[0];
hits[1]=p[1];
hits[2]=p[2];
hits[3]=(Float_t)nel;
// Add this hit
// if (fHitType&&2){
if(fHitType){
gMC->TrackMomentum(p);
Float_t momentum = TMath::Sqrt(p[0]*p[0]+p[1]*p[1]);
Float_t precision = (momentum>0.1) ? 0.002 :0.01;
fTrackHits->SetHitPrecision(precision);
}
// Get also the track time for pileup simulation
hits[4]=gMC->TrackTime();
AddHit(gAlice->GetMCApp()->GetCurrentTrackNumber(), vol,hits);
if (fDebugStreamer){
// You can dump here what you need
// function CreateDebugStremer() to be called in the Config.C macro
// if you want to enable it
// By default debug streaemer is OFF
Float_t edep = gMC->Edep();
Float_t tstep = gMC->TrackStep();
Int_t pid=gMC->TrackPid();
(*fDebugStreamer)<<"hit"<<
"x="<0
} //within sector's limits
// Stemax calculation for the next step
Float_t pp;
TLorentzVector mom;
// below is valid only for Geant3 (fPromaryIonisation not set)
if(!fPrimaryIonisation){
gMC->TrackMomentum(mom);
Float_t ptot=mom.Rho();
Float_t betaGamma = ptot/gMC->TrackMass();
Int_t pid=gMC->TrackPid();
if((pid==kElectron || pid==kPositron) && ptot > 0.002)
{
pp = kprim*1.58; // electrons above 20 MeV/c are on the plateau!
}
else
{
betaGamma = TMath::Max(betaGamma,(Float_t)7.e-3); // protection against too small bg
pp=kprim*AliMathBase::BetheBlochAleph(betaGamma);
}
Double_t rnd = gMC->GetRandom()->Rndm();
gMC->SetMaxStep(-TMath::Log(rnd)/pp);
}
}