/**************************************************************************
* 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. *
**************************************************************************/
/* $Id$ */
///////////////////////////////////////////////////////////////////////////////
// //
// Beam pipe class. Test version //
// //
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/*
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// //
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#include
#include "AliMagF.h"
#include "AliPIPEv1.h"
#include "AliRun.h"
ClassImp(AliPIPEv1)
//_____________________________________________________________________________
AliPIPEv1::AliPIPEv1()
{
//
// Default constructor for beam pipe
//
}
//_____________________________________________________________________________
AliPIPEv1::AliPIPEv1(const char *name, const char *title)
: AliPIPE(name,title)
{
//
// Standard constructor for beam pipe
//
}
//_____________________________________________________________________________
void AliPIPEv1::CreateGeometry()
{
//
// Create Beam Pipe geometry
//
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Float_t tpar[3], dzmo, zpos, absorberDistance, absorberEnd;
Float_t r2, dr;
const Double_t kZFlange = 150;
Int_t *idtmed = fIdtmed->GetArray()-1999;
absorberDistance = 90.; // DEFINES DRIFT LENGTH
//z_nose = 102.;
//z_cone = 285.;
//theta1 = 24.; // 1. angle defining the front absorber
//theta2 = 5.; // 2. angle defining the front absorbe
//acc_max = 9.; // ANGLE POLAIRE MAXIMUM
//acc_min = 2.; // ANGLE POLAIRE MINIMUM DE DETECTION
absorberEnd = 503.;
//d_steel = 1.; // THICKNESS OF STEEL SUPPORT
//d_poly = 7.5;
//d_pb = 2.5;
//abs_cc = 315.; // DEFINES LENGTH OF CARBON
//abs_c = 358.;
//abs_s = 150.; // DEFINES W-SHIELD LENGTH
//abs_n = 80.; // START OF NOSE
//r_abs = 4.;
//r_pb = .1;
//epsilon = .01;
//theta_r = 3.;
//d_rear = 35.;
//theta_open = .75;
//z_l3 = 700.;
//zmag_in = 725.;
//zmag_out = 1225.;
//zfil_in = 1471.;
//zfil_out = 1591.;
//zcon_in = 1900.;
//zcon_out = 2e3;
//zcone_e = 859.0875;
//spec_l = 1800.;
//zplug_in = 1780.;
//zplug_out = 1900.;
// Chamber position
// CZ1=515.5
//cz1 = 511.;
//cz2 = 686.;
//cz3 = 971.;
//cz4 = 1245.;
//cz5 = 1445.;
//cz6 = 1610.;
//cz7 = 1710.;
// the mother of all beam pipes
tpar[0] = 0.;
tpar[1] = 3.;
tpar[2] = (absorberDistance + 700.) / 2.;
dzmo = tpar[2] - absorberDistance;
gMC->Gsvolu("QQMO", "TUBE", idtmed[2015], tpar, 3);
gMC->Gspos("QQMO", 1, "ALIC", 0., 0., -dzmo, 0, "ONLY");
// BEAM PIPE IN DRIFT SPACE
// -30-kZFlange
tpar[0] = 0.;
tpar[1] = 3.;
tpar[2] = 30;
gMC->Gsvolu("QDT1", "TUBE", idtmed[2015], tpar, 3);
tpar[0] = 2.9;
gMC->Gsvolu("QTB1", "TUBE", idtmed[2004], tpar, 3);
gMC->Gspos("QTB1", 1, "QDT1", 0., 0., 0., 0, "ONLY");
gMC->Gspos("QDT1", 1, "QQMO", 0., 0., dzmo, 0, "ONLY");
// 30-90
tpar[0] = 0.;
tpar[1] = 3.;
tpar[2] = 30.;
gMC->Gsvolu("QDT2", "TUBE", idtmed[2015], tpar, 3);
tpar[0] = 2.9;
gMC->Gsvolu("QTB2", "TUBE", idtmed[2004], tpar, 3);
gMC->Gspos("QTB2", 1, "QDT2", 0., 0., 0., 0, "ONLY");
gMC->Gspos("QDT2", 1, "QQMO", 0., 0., dzmo, 0, "ONLY");
// beam pipe outside absorber on the left side
// -30 - kZFlange
tpar[0] = 0.;
tpar[1] = 3.;
tpar[2] = (kZFlange - 30)/2;
gMC->Gsvolu("QDT5", "TUBE", idtmed[2015], tpar, 3);
tpar[0] = 2.9;
zpos = -30. - tpar[2] + dzmo;
gMC->Gsvolu("QTB5", "TUBE", idtmed[2004], tpar, 3);
gMC->Gspos("QTB5", 1, "QDT5", 0., 0., 0., 0, "ONLY");
gMC->Gspos("QDT5", 1, "QQMO", 0., 0., zpos, 0, "ONLY");
// STRAIGHT STEEL PIECE
zpos = -kZFlange;
r2 = 2.9;
dr = .015;
tpar[0] = 0.;
tpar[1] = r2 + dr;
tpar[2] = (zpos + 700.) / 2.;
gMC->Gsvolu("QDT7", "TUBE", idtmed[2015], tpar, 3);
tpar[0] = r2;
gMC->Gsvolu("QTB7", "TUBE", idtmed[2018], tpar, 3);
gMC->Gspos("QTB7", 1, "QDT7", 0., 0., 0., 0, "ONLY");
zpos = zpos - tpar[2] + dzmo;
gMC->Gspos("QDT7", 1, "QQMO", 0., 0., zpos, 0, "ONLY");
// flange dn 63
tpar[0] = 3.;
tpar[1] = 5.7;
tpar[2] = 2.;
gMC->Gsvolu("QN63", "TUBE", idtmed[2018], tpar, 3);
zpos = tpar[2] - kZFlange;
gMC->Gspos("QN63", 1, "ALIC", 0., 0., zpos, 0, "ONLY");
// Replace Absorber or Shield by Beam-Pipe
// in case they are not selected
if (gAlice->GetModule("ABSO") == 0) {
gMC->Gspos("QN63", 2, "ALIC", 0., 0., kZFlange, 0, "ONLY");
r2 = 2.9;
dr = .1;
tpar[0] = 0.;
tpar[1] = r2 + dr;
tpar[2] = (kZFlange - absorberDistance) / 2.;
gMC->Gsvolu("QDT8", "TUBE", idtmed[2015], tpar, 3);
tpar[0] = r2;
gMC->Gsvolu("QTB8", "TUBE", idtmed[2004], tpar, 3);
gMC->Gspos("QTB8", 1, "QDT8", 0., 0., 0., 0, "ONLY");
zpos = absorberDistance + tpar[2];
gMC->Gspos("QDT8", 1, "ALIC", 0., 0., zpos, 0, "ONLY");
dr = .015;
tpar[0] = 0.;
tpar[1] = r2 + dr;
tpar[2] = (absorberEnd - kZFlange) / 2.;
gMC->Gsvolu("QDTS", "TUBE", idtmed[2015], tpar, 3);
tpar[0] = r2;
gMC->Gsvolu("QTBS", "TUBE", idtmed[2018], tpar, 3);
gMC->Gspos("QTBS", 1, "QDTS", 0., 0., 0., 0, "ONLY");
zpos = tpar[2] + kZFlange;
gMC->Gspos("QDTS", 1, "ALIC", 0., 0., zpos, 0, "ONLY");
}
if (gAlice->GetModule("SHIL") == 0) {
r2 = 2.9;
dr = .015;
tpar[0] = 0.;
tpar[1] = r2 + dr;
tpar[2] = (700. - absorberEnd) / 2.;
gMC->Gsvolu("QDT9", "TUBE", idtmed[2015], tpar, 3);
tpar[0] = r2;
gMC->Gsvolu("QTB9", "TUBE", idtmed[2018], tpar, 3);
gMC->Gspos("QTB9", 1, "QDT9", 0., 0., 0., 0, "ONLY");
zpos = absorberEnd + tpar[2];
gMC->Gspos("QDT9", 1, "ALIC", 0., 0., zpos, 0, "ONLY");
}
}
//_____________________________________________________________________________
void AliPIPEv1::CreateMaterials()
{
//
// Create materials for beam pipe
//
Int_t isxfld = ((AliMagF*)TGeoGlobalMagField::Instance()->GetField())->Integ();
Float_t sxmgmx = ((AliMagF*)TGeoGlobalMagField::Instance()->GetField())->Max();
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 epsil, stmin, tmaxfd, deemax, stemax;
// STEEL
// --- Define the various materials for GEANT ---
AliMaterial(5, "BERILLIUM$", 9.01, 4., 1.848, 35.3, 36.7);
AliMaterial(16, "VACUUM$ ", 1e-16, 1e-16, 1e-16, 1e16, 1e16);
AliMaterial(15, "AIR$ ", 14.61, 7.3, .001205, 30423.24, 67500);
AliMixture(19, "STAINLESS STEEL$", asteel, zsteel, 7.88, 4, wsteel);
// ****************
// Defines tracking media parameters.
// Les valeurs sont commentees pour laisser le defaut
// a GEANT (version 3-21, page CONS200), f.m.
epsil = .001; // Tracking precision,
stemax = -1.; // Maximum displacement for multiple scat
tmaxfd = -20.; // Maximum angle due to field deflection
deemax = -.3; // Maximum fractional energy loss, DLS
stmin = -.8;
// Air
AliMedium(15, "AIR_L3_US", 15, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
// Beryllium
AliMedium(5, "BE_L3_US", 5, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
// Vacuum
AliMedium(16, "VA_L3_US", 16, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
// Steel
AliMedium(19, "ST_L3_US", 19, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
}