[u/mrichter/AliRoot.git] / STRUCT / AliABSOv0.cxx

/**************************************************************************
 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
 *                                                                        *
 * Author: The ALICE Off-line Project.                                    *
 * Contributors are mentioned in the code where appropriate.              *
 *                                                                        *
 * Permission to use, copy, modify and distribute this software and its   *
 * documentation strictly for non-commercial purposes is hereby granted   *
 * without fee, provided that the above copyright notice appears in all   *
 * copies and that both the copyright notice and this permission notice   *
 * appear in the supporting documentation. The authors make no claims     *
 * about the suitability of this software for any purpose. It is          *
 * provided "as is" without express or implied warranty.                  *
 **************************************************************************/

/*
$Log$
Revision 1.2  2000/01/13 11:23:59  morsch
Last layer of Pb outer angle corrected

Revision 1.1  2000/01/12 15:39:30  morsch
Standar version of ABSO

*/

///////////////////////////////////////////////////////////////////////////////
//                                                                           //
//  Muon ABSOrber                                                            //
//  This class contains the description of the muon absorber geometry        //
//                                                                           //
//Begin_Html
/*
<img src="picts/AliABSOClass.gif">
</pre>
<br clear=left>
<font size=+2 color=red>
<p>The responsible person for this module is
<a href="mailto:andreas.morsch@cern.ch">Andreas Morsch</a>.
</font>
<pre>
*/
//End_Html
//                                                                           //
//                                                                           //
///////////////////////////////////////////////////////////////////////////////

#include "AliABSOv0.h"
#include "AliRun.h"
#include "AliConst.h"
 
ClassImp(AliABSOv0)
 
//_____________________________________________________________________________
AliABSOv0::AliABSOv0()
{
  //
  // Default constructor
  //
}
 
//_____________________________________________________________________________
AliABSOv0::AliABSOv0(const char *name, const char *title)
       : AliABSO(name,title)
{
  //
  // Standard constructor
  //
  SetMarkerColor(7);
  SetMarkerStyle(2);
  SetMarkerSize(0.4);
}
 
//_____________________________________________________________________________
void AliABSOv0::CreateGeometry()
{
  //
  // Creation of the geometry of the muon absorber
  //
  //Begin_Html
  /*
    <img src="picts/AliABSOv0Tree.gif">
  */
  //End_Html
  //Begin_Html
  /*
    <img src="picts/AliABSOv0.gif">
  */
  //End_Html


  Int_t *idtmed = fIdtmed->GetArray()-1599;
  
  Float_t par[24], cpar[5], cpar0[5], pcpar[12], tpar[3], tpar0[3]; 
  Float_t dz;
#include "ShieldConst.h"
// Mother volume and outer shielding: Pb
    
  par[0]  = 0.;
  par[1]  = 360.;
  par[2]  = 7.;

  par[3]  = -(abs_l-abs_d)/2.;
  par[4]  = r_abs;
  par[5]  = abs_d * TMath::Tan(theta1);

  par[6]  = par[3]+(z_nose-abs_d);
  par[7]  = r_abs;
  par[8]  = z_nose * TMath::Tan(theta1);

  par[9]  = par[3]+(z_cone-abs_d);
  par[10] = r_abs;
  par[11] = par[8] + (par[9] - par[6]) * TMath::Tan(theta2);

  par[12]  = par[3]+(abs_c-abs_d);
  par[13] = r_abs;
  par[14] = par[11] + (par[12] - par[9]) * TMath::Tan(acc_max);

  par[15] = par[3]+(abs_l-d_rear-abs_d);
  par[16] = r_abs   + (par[15] - par[12]) * TMath::Tan(theta_open1) ;
  par[17] = par[14] + (par[15] - par[12]) * TMath::Tan(acc_max);

  par[18] = par[3]+(abs_l-d_rear-abs_d);
  par[19] = (abs_l-d_rear) * TMath::Tan(acc_min);
  par[20] = par[14] + (par[18] - par[12]) * TMath::Tan(acc_max);

  par[21] = -par[3];
  par[22] =  abs_l* TMath::Tan(acc_min);
  par[23] = par[20] + (par[21] - par[18]) * TMath::Tan(acc_max);
  gMC->Gsvolu("ABSS", "PCON", idtmed[1612], par, 24);
  for (Int_t i=4; i<18; i+=3) par[i]  = 0;
  gMC->Gsvolu("ABSM", "PCON", idtmed[1655], par, 24);
  gMC->Gspos("ABSS", 1, "ABSM", 0., 0., 0., 0, "ONLY");

//
// Steel envelope
//
  par[4] = par[5] -d_steel;
  par[7] = par[8] -d_steel;
  par[10]= par[11]-d_steel;  
  par[13]= par[14]-d_steel;  
  par[16]= par[17]-d_steel;  
  par[19]= par[20]-d_steel;  
  par[22]= par[23]-d_steel;  
  gMC->Gsvolu("ABST", "PCON", idtmed[1618], par, 24);
  gMC->Gspos("ABST", 1, "ABSS", 0., 0., 0., 0, "ONLY");
//
// Polyethylene shield
// 
  cpar[0] = (abs_l - z_cone) / 2.;
  cpar[1] = z_cone * TMath::Tan(acc_max);
  cpar[2] = cpar[1] + d_poly;
  cpar[3] = abs_l * TMath::Tan(acc_max);
  cpar[4] = cpar[3] + d_poly;
  gMC->Gsvolu("APOL", "CONE", idtmed[1657], cpar, 5);
  dz = (abs_l-abs_d)/2.-cpar[0];
  gMC->Gspos("APOL", 1, "ABSS", 0., 0., dz, 0, "ONLY");

//
// Tungsten nose to protect TPC
// 
  cpar[0] = (z_nose - abs_d) / 2.;
  cpar[1] = abs_d * TMath::Tan(acc_max);
  cpar[2] = abs_d * TMath::Tan(theta1)-d_steel;
  cpar[3] = z_nose * TMath::Tan(acc_max);
  cpar[4] = z_nose * TMath::Tan(theta1)-d_steel;
  gMC->Gsvolu("ANOS", "CONE", idtmed[1611], cpar, 5);
  //
  dz = -(abs_l-abs_d)/2.+cpar[0];
  gMC->Gspos("ANOS", 1, "ABSS", 0., 0., dz, 0, "ONLY");
//
// Tungsten inner shield
//
  cpar[0] = (abs_l-d_rear - abs_c)/ 2.;
  cpar[1] = r_abs;
  cpar[2] = abs_c * TMath::Tan(acc_min);
  cpar[3] = r_abs + 2. * cpar[0] * TMath::Tan(theta_open1);
  cpar[4] = (abs_l-d_rear)  * TMath::Tan(acc_min);
  gMC->Gsvolu("AWIN", "CONE", idtmed[1651], cpar, 5);
  //
  dz = (abs_l-abs_d)/2.-cpar[0]-d_rear;
  gMC->Gspos("AWIN", 1, "ABSS", 0., 0., dz, 0, "ONLY");

  //     Inner tracking region
  //
  //     mother volume: Pb
  //
  pcpar[0]  = 0.;
  pcpar[1]  = 360.;
  pcpar[2]  = 3.;
  pcpar[3]  = -(abs_l-abs_d)/2.;
  pcpar[4]  = r_abs;
  pcpar[5]  = abs_d * TMath::Tan(acc_max);
  pcpar[6]  = pcpar[3]+(z_2deg-abs_d);
  pcpar[7]  = r_abs;
  pcpar[8]  = z_2deg * TMath::Tan(acc_max);
  pcpar[9]  = -pcpar[3];
  pcpar[10] = abs_l * TMath::Tan(acc_min);
  pcpar[11] = abs_l * TMath::Tan(acc_max);
  gMC->Gsvolu("AITR", "PCON", idtmed[1612], pcpar, 12);
  //
  // special Pb medium for last 5 cm of Pb
  zr=abs_l-5;
  cpar[0] = 2.5;
  cpar[1] = zr * TMath::Tan(theta_r);
  cpar[2] = zr * TMath::Tan(acc_max);
  cpar[3] = cpar[1] + TMath::Tan(theta_r) * 5;
  cpar[4] = cpar[2] + TMath::Tan(acc_max) * 5;
  gMC->Gsvolu("ARPB", "CONE", idtmed[1632], cpar, 5);
  dz=(abs_l-abs_d)/2.-cpar[0];
  gMC->Gspos("ARPB", 1, "AITR", 0., 0., dz, 0, "ONLY");

  //
  //     concrete cone: concrete 
  //
  pcpar[9]  = par[3]+(abs_l-d_rear-abs_d);
  pcpar[10] = (abs_l-d_rear) * TMath::Tan(acc_min);
  pcpar[11] = (abs_l-d_rear) * TMath::Tan(acc_max);
  gMC->Gsvolu("ACON", "PCON", idtmed[1616], pcpar, 12);
  gMC->Gspos("ACON", 1, "AITR", 0., 0., 0., 0, "ONLY");
  //
  //     carbon cone: carbon
  //
  pcpar[9]  = pcpar[3]+(abs_cc-abs_d);
  pcpar[10]  = abs_cc * TMath::Tan(acc_min);
  pcpar[11]  = abs_cc * TMath::Tan(acc_max);
  gMC->Gsvolu("ACAR", "PCON", idtmed[1605], pcpar, 12);
  gMC->Gspos("ACAR", 1, "ACON", 0., 0., 0., 0, "ONLY");
  //
  //     inner W shield
  zr=abs_l-d_rear;
  cpar[0] = d_rear/2.;
  cpar[1] = zr * TMath::Tan(acc_min);
  cpar[2] = zr * TMath::Tan(theta_r);
  cpar[3] = cpar[1] + TMath::Tan(acc_min) * d_rear;
  cpar[4] = cpar[2] + TMath::Tan(theta_r) * d_rear;
  gMC->Gsvolu("ARW0", "CONE", idtmed[1611], cpar, 5);
  dz=(abs_l-abs_d)/2.-cpar[0];
  gMC->Gspos("ARW0", 1, "AITR", 0., 0., dz, 0, "ONLY");
  //
  // special W medium for last 5 cm of W
  zr=abs_l-5;
  cpar[0] = 2.5;
  cpar[1] = zr * TMath::Tan(acc_min);
  cpar[2] = zr * TMath::Tan(theta_r);
  cpar[3] = cpar[1] + TMath::Tan(acc_min) * 5.;
  cpar[4] = cpar[2] + TMath::Tan(theta_r) * 5.;
  gMC->Gsvolu("ARW1", "CONE", idtmed[1631], cpar, 5);
  dz=d_rear/2.-cpar[0];
  gMC->Gspos("ARW1", 1, "ARW0", 0., 0., dz, 0, "ONLY");
  //
  // PolyEthylene Layers
  Float_t dr_min=TMath::Tan(theta_r) * 5;
  Float_t dr_max=TMath::Tan(acc_max) * 5;
  gMC->Gsvolu("ARPE", "CONE", idtmed[1617], cpar, 0);
  cpar[0]=2.5;
  for (Int_t i=0; i<3; i++) {
      zr=abs_l-d_rear+5+i*10.;
      cpar[1] = zr * TMath::Tan(theta_r);
      cpar[2] = zr * TMath::Tan(acc_max);
      cpar[3] = cpar[1] + dr_min;
      cpar[4] = cpar[2] + dr_max;
      dz=(abs_l-abs_d)/2.-cpar[0]-5.-(2-i)*10;
      gMC->Gsposp("ARPE", i+1, "AITR", 0., 0., dz, 0, "ONLY",cpar,5);
  }
  gMC->Gspos("AITR", 1, "ABSS", 0., 0., 0., 0, "ONLY");	
  dz = (abs_l-abs_d)/2.+abs_d;
  gMC->Gspos("ABSM", 1, "ALIC", 0., 0., dz, 0, "ONLY");	
//
//
// vacuum system
//
// pipe and heating jackets
//
//
// cylindrical piece
  tpar0[2]=(abs_c-abs_d)/2;
  tpar0[0]=r_vacu;
  tpar0[1]=r_abs;
  gMC->Gsvolu("AV11", "TUBE", idtmed[1658], tpar0, 3);
//
// insulation
  tpar[2]=tpar0[2];
  tpar[0]=tpar0[0]+d_tube;
  tpar[1]=tpar0[0]+d_tube+d_insu;
  gMC->Gsvolu("AI11", "TUBE", idtmed[1653], tpar, 3);
  gMC->Gspos("AI11", 1, "AV11", 0., 0., 0., 0, "ONLY"); 
//
// clearance
  tpar[0]=tpar0[1]-d_prot-d_free;
  tpar[1]=tpar0[1]-d_prot;
  gMC->Gsvolu("AP11", "TUBE", idtmed[1655], tpar, 3);
  gMC->Gspos("AP11", 1, "AV11", 0., 0., 0., 0, "ONLY"); 
  
  dz=-(abs_l-abs_d)/2.+tpar0[2];
  gMC->Gspos("AV11", 1, "ABSM", 0., 0., dz, 0, "ONLY"); 
  
//
// conical piece
  cpar0[0]=(abs_l-d_rear-abs_c)/2;
  cpar0[1]=r_vacu;
  cpar0[2]=r_abs;
  cpar0[3]=cpar0[1]+2.*cpar0[0]*TMath::Tan(theta_open1);
  cpar0[4]=cpar0[2]+2.*cpar0[0]*TMath::Tan(theta_open1);
  gMC->Gsvolu("AV21", "CONE", idtmed[1658], cpar0, 5);
//
// insulation
  cpar[0]=cpar0[0];
  cpar[1]=cpar0[1]+d_tube;
  cpar[2]=cpar0[1]+d_tube+d_insu;
  cpar[3]=cpar0[3]+d_tube;
  cpar[4]=cpar0[3]+d_tube+d_insu;
  gMC->Gsvolu("AI21", "CONE", idtmed[1653], cpar, 5);
  gMC->Gspos("AI21", 1, "AV21", 0., 0., 0., 0, "ONLY"); 
//
// clearance
  cpar[1]=cpar0[2]-d_prot-d_free;
  cpar[2]=cpar0[2]-d_prot;
  cpar[3]=cpar0[4]-d_prot-d_free;
  cpar[4]=cpar0[4]-d_prot;
  gMC->Gsvolu("AP21", "CONE", idtmed[1655], cpar, 5);
  gMC->Gspos("AP21", 1, "AV21", 0., 0., 0., 0, "ONLY"); 
  
  dz=(abs_l-abs_d)/2.-cpar0[0]-d_rear;
  gMC->Gspos("AV21", 1, "ABSM", 0., 0., dz, 0, "ONLY"); 

}

//_____________________________________________________________________________

void AliABSOv0::Init()
{
  //
  // Initialisation of the muon absorber after it has been built
  Int_t i;
  //
  printf("\n");
  for(i=0;i<35;i++) printf("*");
  printf(" ABSOv0_INIT ");
  for(i=0;i<35;i++) printf("*");
  printf("\n");
  //
  for(i=0;i<80;i++) printf("*");
  printf("\n");
}
Commit	Line	Data
43d014f0	1	/**************************************************************************
	2	* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
	3	* *
	4	* Author: The ALICE Off-line Project. *
	5	* Contributors are mentioned in the code where appropriate. *
	6	* *
	7	* Permission to use, copy, modify and distribute this software and its *
	8	* documentation strictly for non-commercial purposes is hereby granted *
	9	* without fee, provided that the above copyright notice appears in all *
	10	* copies and that both the copyright notice and this permission notice *
	11	* appear in the supporting documentation. The authors make no claims *
	12	* about the suitability of this software for any purpose. It is *
	13	* provided "as is" without express or implied warranty. *
	14	**************************************************************************/
	15
	16	/*
	17	$Log$
85d164ab	18	Revision 1.2 2000/01/13 11:23:59 morsch
	19	Last layer of Pb outer angle corrected
	20
54fba644	21	Revision 1.1 2000/01/12 15:39:30 morsch
	22	Standar version of ABSO
	23
43d014f0	24	*/
	25
	26	///////////////////////////////////////////////////////////////////////////////
	27	// //
	28	// Muon ABSOrber //
	29	// This class contains the description of the muon absorber geometry //
	30	// //
	31	//Begin_Html
	32	/*
	33	<img src="picts/AliABSOClass.gif">
	34	</pre>
	35	<br clear=left>
	36	<font size=+2 color=red>
	37	<p>The responsible person for this module is
	38	<a href="mailto:andreas.morsch@cern.ch">Andreas Morsch</a>.
	39	</font>
	40	<pre>
	41	*/
	42	//End_Html
	43	// //
	44	// //
	45	///////////////////////////////////////////////////////////////////////////////
	46
	47	#include "AliABSOv0.h"
	48	#include "AliRun.h"
	49	#include "AliConst.h"
	50
	51	ClassImp(AliABSOv0)
	52
	53	//_____________________________________________________________________________
	54	AliABSOv0::AliABSOv0()
	55	{
	56	//
	57	// Default constructor
	58	//
	59	}
	60
	61	//_____________________________________________________________________________
	62	AliABSOv0::AliABSOv0(const char name, const char title)
	63	: AliABSO(name,title)
	64	{
	65	//
	66	// Standard constructor
	67	//
	68	SetMarkerColor(7);
	69	SetMarkerStyle(2);
	70	SetMarkerSize(0.4);
	71	}
	72
	73	//_____________________________________________________________________________
	74	void AliABSOv0::CreateGeometry()
	75	{
	76	//
	77	// Creation of the geometry of the muon absorber
	78	//
	79	//Begin_Html
	80	/*
	81	<img src="picts/AliABSOv0Tree.gif">
	82	*/
	83	//End_Html
	84	//Begin_Html
	85	/*
	86	<img src="picts/AliABSOv0.gif">
	87	*/
88	//End_Html
89
90
91	Int_t *idtmed = fIdtmed->GetArray()-1599;
92
93	Float_t par[24], cpar[5], cpar0[5], pcpar[12], tpar[3], tpar0[3];
94	Float_t dz;
95	#include "ShieldConst.h"
96	// Mother volume and outer shielding: Pb
97
98	par[0] = 0.;
99	par[1] = 360.;
100	par[2] = 7.;
101
102	par[3] = -(abs_l-abs_d)/2.;
103	par[4] = r_abs;
104	par[5] = abs_d * TMath::Tan(theta1);
105
106	par[6] = par[3]+(z_nose-abs_d);
107	par[7] = r_abs;
108	par[8] = z_nose * TMath::Tan(theta1);
109
110	par[9] = par[3]+(z_cone-abs_d);
111	par[10] = r_abs;
112	par[11] = par[8] + (par[9] - par[6]) * TMath::Tan(theta2);
113
114	par[12] = par[3]+(abs_c-abs_d);
115	par[13] = r_abs;
116	par[14] = par[11] + (par[12] - par[9]) * TMath::Tan(acc_max);
117
118	par[15] = par[3]+(abs_l-d_rear-abs_d);
119	par[16] = r_abs + (par[15] - par[12]) * TMath::Tan(theta_open1) ;
120	par[17] = par[14] + (par[15] - par[12]) * TMath::Tan(acc_max);
121
122	par[18] = par[3]+(abs_l-d_rear-abs_d);
123	par[19] = (abs_l-d_rear) * TMath::Tan(acc_min);
85d164ab	124	par[20] = par[14] + (par[18] - par[12]) * TMath::Tan(acc_max);
43d014f0	125
	126	par[21] = -par[3];
	127	par[22] = abs_l* TMath::Tan(acc_min);
	128	par[23] = par[20] + (par[21] - par[18]) * TMath::Tan(acc_max);
	129	gMC->Gsvolu("ABSS", "PCON", idtmed[1612], par, 24);
85d164ab	130	for (Int_t i=4; i<18; i+=3) par[i] = 0;
43d014f0	131	gMC->Gsvolu("ABSM", "PCON", idtmed[1655], par, 24);
	132	gMC->Gspos("ABSS", 1, "ABSM", 0., 0., 0., 0, "ONLY");
	133
	134	//
	135	// Steel envelope
	136	//
	137	par[4] = par[5] -d_steel;
	138	par[7] = par[8] -d_steel;
	139	par[10]= par[11]-d_steel;
	140	par[13]= par[14]-d_steel;
	141	par[16]= par[17]-d_steel;
	142	par[19]= par[20]-d_steel;
	143	par[22]= par[23]-d_steel;
	144	gMC->Gsvolu("ABST", "PCON", idtmed[1618], par, 24);
	145	gMC->Gspos("ABST", 1, "ABSS", 0., 0., 0., 0, "ONLY");
	146	//
	147	// Polyethylene shield
	148	//
	149	cpar[0] = (abs_l - z_cone) / 2.;
	150	cpar[1] = z_cone * TMath::Tan(acc_max);
	151	cpar[2] = cpar[1] + d_poly;
	152	cpar[3] = abs_l * TMath::Tan(acc_max);
	153	cpar[4] = cpar[3] + d_poly;
	154	gMC->Gsvolu("APOL", "CONE", idtmed[1657], cpar, 5);
	155	dz = (abs_l-abs_d)/2.-cpar[0];
	156	gMC->Gspos("APOL", 1, "ABSS", 0., 0., dz, 0, "ONLY");
	157
	158	//
	159	// Tungsten nose to protect TPC
	160	//
	161	cpar[0] = (z_nose - abs_d) / 2.;
	162	cpar[1] = abs_d * TMath::Tan(acc_max);
	163	cpar[2] = abs_d * TMath::Tan(theta1)-d_steel;
	164	cpar[3] = z_nose * TMath::Tan(acc_max);
	165	cpar[4] = z_nose * TMath::Tan(theta1)-d_steel;
	166	gMC->Gsvolu("ANOS", "CONE", idtmed[1611], cpar, 5);
	167	//
	168	dz = -(abs_l-abs_d)/2.+cpar[0];
	169	gMC->Gspos("ANOS", 1, "ABSS", 0., 0., dz, 0, "ONLY");
	170	//
	171	// Tungsten inner shield
	172	//
	173	cpar[0] = (abs_l-d_rear - abs_c)/ 2.;
	174	cpar[1] = r_abs;
	175	cpar[2] = abs_c * TMath::Tan(acc_min);
	176	cpar[3] = r_abs + 2. * cpar[0] * TMath::Tan(theta_open1);
	177	cpar[4] = (abs_l-d_rear) * TMath::Tan(acc_min);
	178	gMC->Gsvolu("AWIN", "CONE", idtmed[1651], cpar, 5);
	179	//
	180	dz = (abs_l-abs_d)/2.-cpar[0]-d_rear;
	181	gMC->Gspos("AWIN", 1, "ABSS", 0., 0., dz, 0, "ONLY");
	182
	183	// Inner tracking region
	184	//
	185	// mother volume: Pb
	186	//
	187	pcpar[0] = 0.;
	188	pcpar[1] = 360.;
	189	pcpar[2] = 3.;
	190	pcpar[3] = -(abs_l-abs_d)/2.;
	191	pcpar[4] = r_abs;
	192	pcpar[5] = abs_d * TMath::Tan(acc_max);
	193	pcpar[6] = pcpar[3]+(z_2deg-abs_d);
	194	pcpar[7] = r_abs;
195	pcpar[8] = z_2deg * TMath::Tan(acc_max);
85d164ab	196	pcpar[9] = -pcpar[3];
43d014f0	197	pcpar[10] = abs_l * TMath::Tan(acc_min);
	198	pcpar[11] = abs_l * TMath::Tan(acc_max);
	199	gMC->Gsvolu("AITR", "PCON", idtmed[1612], pcpar, 12);
	200	//
	201	// special Pb medium for last 5 cm of Pb
	202	zr=abs_l-5;
	203	cpar[0] = 2.5;
	204	cpar[1] = zr * TMath::Tan(theta_r);
	205	cpar[2] = zr * TMath::Tan(acc_max);
85d164ab	206	cpar[3] = cpar[1] + TMath::Tan(theta_r) * 5;
54fba644	207	cpar[4] = cpar[2] + TMath::Tan(acc_max) * 5;
43d014f0	208	gMC->Gsvolu("ARPB", "CONE", idtmed[1632], cpar, 5);
	209	dz=(abs_l-abs_d)/2.-cpar[0];
	210	gMC->Gspos("ARPB", 1, "AITR", 0., 0., dz, 0, "ONLY");
	211
	212	//
	213	// concrete cone: concrete
	214	//
	215	pcpar[9] = par[3]+(abs_l-d_rear-abs_d);
	216	pcpar[10] = (abs_l-d_rear) * TMath::Tan(acc_min);
	217	pcpar[11] = (abs_l-d_rear) * TMath::Tan(acc_max);
	218	gMC->Gsvolu("ACON", "PCON", idtmed[1616], pcpar, 12);
	219	gMC->Gspos("ACON", 1, "AITR", 0., 0., 0., 0, "ONLY");
	220	//
	221	// carbon cone: carbon
	222	//
	223	pcpar[9] = pcpar[3]+(abs_cc-abs_d);
	224	pcpar[10] = abs_cc * TMath::Tan(acc_min);
	225	pcpar[11] = abs_cc * TMath::Tan(acc_max);
	226	gMC->Gsvolu("ACAR", "PCON", idtmed[1605], pcpar, 12);
	227	gMC->Gspos("ACAR", 1, "ACON", 0., 0., 0., 0, "ONLY");
	228	//
	229	// inner W shield
	230	zr=abs_l-d_rear;
	231	cpar[0] = d_rear/2.;
	232	cpar[1] = zr * TMath::Tan(acc_min);
	233	cpar[2] = zr * TMath::Tan(theta_r);
85d164ab	234	cpar[3] = cpar[1] + TMath::Tan(acc_min) * d_rear;
85d164ab	235	cpar[4] = cpar[2] + TMath::Tan(theta_r) * d_rear;
43d014f0	236	gMC->Gsvolu("ARW0", "CONE", idtmed[1611], cpar, 5);
	237	dz=(abs_l-abs_d)/2.-cpar[0];
	238	gMC->Gspos("ARW0", 1, "AITR", 0., 0., dz, 0, "ONLY");
	239	//
	240	// special W medium for last 5 cm of W
	241	zr=abs_l-5;
	242	cpar[0] = 2.5;
	243	cpar[1] = zr * TMath::Tan(acc_min);
	244	cpar[2] = zr * TMath::Tan(theta_r);
	245	cpar[3] = cpar[1] + TMath::Tan(acc_min) * 5.;
	246	cpar[4] = cpar[2] + TMath::Tan(theta_r) * 5.;
	247	gMC->Gsvolu("ARW1", "CONE", idtmed[1631], cpar, 5);
	248	dz=d_rear/2.-cpar[0];
	249	gMC->Gspos("ARW1", 1, "ARW0", 0., 0., dz, 0, "ONLY");
	250	//
	251	// PolyEthylene Layers
	252	Float_t dr_min=TMath::Tan(theta_r) * 5;
	253	Float_t dr_max=TMath::Tan(acc_max) * 5;
	254	gMC->Gsvolu("ARPE", "CONE", idtmed[1617], cpar, 0);
	255	cpar[0]=2.5;
	256	for (Int_t i=0; i<3; i++) {
	257	zr=abs_l-d_rear+5+i*10.;
	258	cpar[1] = zr * TMath::Tan(theta_r);
	259	cpar[2] = zr * TMath::Tan(acc_max);
	260	cpar[3] = cpar[1] + dr_min;
	261	cpar[4] = cpar[2] + dr_max;
	262	dz=(abs_l-abs_d)/2.-cpar[0]-5.-(2-i)*10;
	263	gMC->Gsposp("ARPE", i+1, "AITR", 0., 0., dz, 0, "ONLY",cpar,5);
	264	}
	265	gMC->Gspos("AITR", 1, "ABSS", 0., 0., 0., 0, "ONLY");
	266	dz = (abs_l-abs_d)/2.+abs_d;
	267	gMC->Gspos("ABSM", 1, "ALIC", 0., 0., dz, 0, "ONLY");
	268	//
	269	//
	270	// vacuum system
	271	//
	272	// pipe and heating jackets
	273	//
	274	//
	275	// cylindrical piece
	276	tpar0[2]=(abs_c-abs_d)/2;
	277	tpar0[0]=r_vacu;
	278	tpar0[1]=r_abs;
	279	gMC->Gsvolu("AV11", "TUBE", idtmed[1658], tpar0, 3);
	280	//
	281	// insulation
	282	tpar[2]=tpar0[2];
	283	tpar[0]=tpar0[0]+d_tube;
	284	tpar[1]=tpar0[0]+d_tube+d_insu;
	285	gMC->Gsvolu("AI11", "TUBE", idtmed[1653], tpar, 3);
	286	gMC->Gspos("AI11", 1, "AV11", 0., 0., 0., 0, "ONLY");
	287	//
	288	// clearance
	289	tpar[0]=tpar0[1]-d_prot-d_free;
	290	tpar[1]=tpar0[1]-d_prot;
	291	gMC->Gsvolu("AP11", "TUBE", idtmed[1655], tpar, 3);
	292	gMC->Gspos("AP11", 1, "AV11", 0., 0., 0., 0, "ONLY");
	293
	294	dz=-(abs_l-abs_d)/2.+tpar0[2];
	295	gMC->Gspos("AV11", 1, "ABSM", 0., 0., dz, 0, "ONLY");
	296
	297	//
	298	// conical piece
	299	cpar0[0]=(abs_l-d_rear-abs_c)/2;
300	cpar0[1]=r_vacu;
301	cpar0[2]=r_abs;
302	cpar0[3]=cpar0[1]+2.cpar0[0]TMath::Tan(theta_open1);
303	cpar0[4]=cpar0[2]+2.cpar0[0]TMath::Tan(theta_open1);
304	gMC->Gsvolu("AV21", "CONE", idtmed[1658], cpar0, 5);
305	//
306	// insulation
307	cpar[0]=cpar0[0];
308	cpar[1]=cpar0[1]+d_tube;
309	cpar[2]=cpar0[1]+d_tube+d_insu;
310	cpar[3]=cpar0[3]+d_tube;
311	cpar[4]=cpar0[3]+d_tube+d_insu;
312	gMC->Gsvolu("AI21", "CONE", idtmed[1653], cpar, 5);
313	gMC->Gspos("AI21", 1, "AV21", 0., 0., 0., 0, "ONLY");
314	//
315	// clearance
316	cpar[1]=cpar0[2]-d_prot-d_free;
317	cpar[2]=cpar0[2]-d_prot;
318	cpar[3]=cpar0[4]-d_prot-d_free;
319	cpar[4]=cpar0[4]-d_prot;
320	gMC->Gsvolu("AP21", "CONE", idtmed[1655], cpar, 5);
321	gMC->Gspos("AP21", 1, "AV21", 0., 0., 0., 0, "ONLY");
322
323	dz=(abs_l-abs_d)/2.-cpar0[0]-d_rear;
324	gMC->Gspos("AV21", 1, "ABSM", 0., 0., dz, 0, "ONLY");
325
326	}
327
328	//_____________________________________________________________________________
329
330	void AliABSOv0::Init()
331	{
332	//
333	// Initialisation of the muon absorber after it has been built
334	Int_t i;
335	//
336	printf("\n");
337	for(i=0;i<35;i++) printf("*");
338	printf(" ABSOv0_INIT ");
339	for(i=0;i<35;i++) printf("*");
340	printf("\n");
341	//
342	for(i=0;i<80;i++) printf("*");
343	printf("\n");
344	}
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