/**************************************************************************
* 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 1.14 1999/11/05 22:39:06 fca
New hits structure
Revision 1.13 1999/11/01 20:41:57 fca
Added protections against using the wrong version of FRAME
Revision 1.12 1999/10/22 08:04:14 fca
Correct improper use of negative parameters
Revision 1.11 1999/10/16 19:30:05 fca
Corrected Rotation Matrix and CVS log
Revision 1.10 1999/10/15 15:35:20 fca
New version for frame1099 with and without holes
Revision 1.9 1999/09/29 09:24:33 fca
Introduction of the Copyright and cvs Log
*/
///////////////////////////////////////////////////////////////////////////////
// //
// Time Of Flight: design of C.Williams FCA //
// This class contains the functions for version 1 of the Time Of Flight //
// detector. //
//
// VERSION WITH 5 MODULES AND TILTED STRIPS
//
// WITH HOLES FOR PHOS AND HMPID
// INSIDE A FULL COVERAGE SPACE FRAME
//
//
// Authors:
//
// Alessio Seganti
// Domenico Vicinanza
//
// University of Salerno - Italy
//
//
//
//Begin_Html
/*
*/
//End_Html
// //
///////////////////////////////////////////////////////////////////////////////
#include
#include
#include "AliTOFv2.h"
#include "AliRun.h"
#include "AliConst.h"
ClassImp(AliTOFv2)
//_____________________________________________________________________________
AliTOFv2::AliTOFv2()
{
//
// Default constructor
//
}
//_____________________________________________________________________________
AliTOFv2::AliTOFv2(const char *name, const char *title)
: AliTOF(name,title)
{
//
// Standard constructor
//
//
// Check that FRAME is there otherwise we have no place where to
// put TOF
AliModule* FRAME=gAlice->GetModule("FRAME");
if(!FRAME) {
Error("Ctor","TOF needs FRAME to be present\n");
exit(1);
} else
if(FRAME->IsVersion()!=1) {
Error("Ctor","FRAME version 1 needed with this version of TOF\n");
exit(1);
}
}
//_____________________________________________________________________________
void AliTOFv2::CreateGeometry()
{
//
// Create geometry for Time Of Flight version 0
//
//Begin_Html
/*
*/
//End_Html
//
// Creates common geometry
//
AliTOF::CreateGeometry();
}
//_____________________________________________________________________________
void AliTOFv2::TOFpc(Float_t xtof, Float_t ytof, Float_t zlen1,
Float_t zlen2, Float_t zlen3, Float_t ztof0)
{
//
// Definition of the Time Of Fligh Resistive Plate Chambers
// xFLT, yFLT, zFLT - sizes of TOF modules (large)
Int_t idrotm[100];
Int_t nrot = 0;
Float_t ycoor, zcoor;
Float_t par[10];
Int_t *idtmed = fIdtmed->GetArray()-499;
par[0] = xtof / 2.;
par[1] = ytof / 2.;
par[2] = zlen1 / 2.;
gMC->Gsvolu("FTO1", "BOX ", idtmed[506], par, 3);
par[2] = zlen2 / 2.;
gMC->Gsvolu("FTO2", "BOX ", idtmed[506], par, 3);
par[2] = zlen3 / 2.;
gMC->Gsvolu("FTO3", "BOX ", idtmed[506], par, 3);
// Position of modules
Float_t zcor1 = ztof0 - zlen1/2;
Float_t zcor2 = ztof0 - zlen1 - zlen2/2.;
Float_t zcor3 = 0.;
AliMatrix(idrotm[0], 90., 0., 0., 0., 90, -90.);
AliMatrix(idrotm[1], 90., 180., 0., 0., 90, 90.);
gMC->Gspos("FTO1", 1, "BTO1", 0, zcor1, 0, idrotm[0], "ONLY");
gMC->Gspos("FTO1", 2, "BTO1", 0, -zcor1, 0, idrotm[1], "ONLY");
gMC->Gspos("FTO1", 1, "BTO2", 0, zcor1, 0, idrotm[0], "ONLY");
gMC->Gspos("FTO1", 2, "BTO2", 0, -zcor1, 0, idrotm[1], "ONLY");
gMC->Gspos("FTO1", 1, "BTO3", 0, zcor1, 0, idrotm[0], "ONLY");
gMC->Gspos("FTO1", 2, "BTO3", 0, -zcor1, 0, idrotm[1], "ONLY");
gMC->Gspos("FTO2", 1, "BTO1", 0, zcor2, 0, idrotm[0], "ONLY");
gMC->Gspos("FTO2", 2, "BTO1", 0, -zcor2, 0, idrotm[1], "ONLY");
gMC->Gspos("FTO2", 1, "BTO2", 0, zcor2, 0, idrotm[0], "ONLY");
gMC->Gspos("FTO2", 2, "BTO2", 0, -zcor2, 0, idrotm[1], "ONLY");
gMC->Gspos("FTO3", 0, "BTO1", 0, zcor3, 0, idrotm[0], "ONLY");
// Subtraction the distance to TOF module boundaries
Float_t db = 7.;
Float_t xFLT, yFLT, zFLT1, zFLT2, zFLT3;
xFLT = xtof -(.5 +.5)*2;
yFLT = ytof;
zFLT1 = zlen1 - db;
zFLT2 = zlen2 - db;
zFLT3 = zlen3 - db;
// Sizes of MRPC pads
Float_t yPad = 0.505;
// Large not sensitive volumes with CO2
par[0] = xFLT/2;
par[1] = yFLT/2;
cout <<"************************* TOF geometry **************************"<Gsvolu("FLT1", "BOX ", idtmed[506], par, 3); // CO2
gMC->Gspos("FLT1", 0, "FTO1", 0., 0., 0., 0, "ONLY");
par[2] = (zFLT2 / 2.);
gMC->Gsvolu("FLT2", "BOX ", idtmed[506], par, 3); // CO2
gMC->Gspos("FLT2", 0, "FTO2", 0., 0., 0., 0, "ONLY");
par[2] = (zFLT3 / 2.);
gMC->Gsvolu("FLT3", "BOX ", idtmed[506], par, 3); // CO2
gMC->Gspos("FLT3", 0, "FTO3", 0., 0., 0., 0, "ONLY");
////////// Layers before detector ////////////////////
// Alluminium layer in front 1.0 mm thick at the beginning
par[0] = -1;
par[1] = 0.1;
par[2] = -1;
ycoor = -yFLT/2 + par[1];
gMC->Gsvolu("FMY1", "BOX ", idtmed[508], par, 3); // Alluminium
gMC->Gspos("FMY1", 0, "FLT1", 0., ycoor, 0., 0, "ONLY");
gMC->Gsvolu("FMY2", "BOX ", idtmed[508], par, 3); // Alluminium
gMC->Gspos("FMY2", 0, "FLT2", 0., ycoor, 0., 0, "ONLY");
gMC->Gsvolu("FMY3", "BOX ", idtmed[508], par, 3); // Alluminium
gMC->Gspos("FMY3", 0, "FLT3", 0., ycoor, 0., 0, "ONLY");
// Honeycomb layer (1cm of special polyethilene)
ycoor = ycoor + par[1];
par[0] = -1;
par[1] = 0.5;
par[2] = -1;
ycoor = ycoor + par[1];
gMC->Gsvolu("FPL1", "BOX ", idtmed[503], par, 3); // Hony
gMC->Gspos("FPL1", 0, "FLT1", 0., ycoor, 0., 0, "ONLY");
gMC->Gsvolu("FPL2", "BOX ", idtmed[503], par, 3); // Hony
gMC->Gspos("FPL2", 0, "FLT2", 0., ycoor, 0., 0, "ONLY");
gMC->Gsvolu("FPL3", "BOX ", idtmed[503], par, 3); // Hony
gMC->Gspos("FPL3", 0, "FLT3", 0., ycoor, 0., 0, "ONLY");
///////////////// Detector itself //////////////////////
const Float_t StripWidth = 7.81;//cm
const Float_t DeadBound = 1.;//cm non-sensitive between the pad edge and the boundary of the strip
const Int_t nx = 40; // number of pads along x
const Int_t nz = 2; // number of pads along z
const Float_t Gap=4.; //cm distance between the strip axis
const Float_t Space = 5.5; //cm distance from the front plate of the box
Float_t zSenStrip;
zSenStrip = StripWidth-2*DeadBound;//cm
par[0] = xFLT/2;
par[1] = yPad/2;
par[2] = StripWidth/2.;
// Glass Layer of detector
gMC->Gsvolu("FSTR","BOX",idtmed[514],par,3);
// Freon for non-sesitive boundaries
par[0] = xFLT/2;
par[1] = 0.110/2;
par[2] = -1;
gMC->Gsvolu("FNSF","BOX",idtmed[512],par,3);
gMC->Gspos("FNSF",0,"FSTR",0.,0.,0.,0,"ONLY");
// Mylar for non-sesitive boundaries
par[1] = 0.025;
gMC->Gsvolu("FMYI","BOX",idtmed[510],par,3);
gMC->Gspos("FMYI",0,"FNSF",0.,0.,0.,0,"ONLY");
// Mylar for outer layers
par[1] = 0.035/2;
ycoor = -yPad/2.+par[1];
gMC->Gsvolu("FMYX","BOX",idtmed[510],par,3);
gMC->Gspos("FMYX",1,"FSTR",0.,ycoor,0.,0,"ONLY");
gMC->Gspos("FMYX",2,"FSTR",0.,-ycoor,0.,0,"ONLY");
ycoor += par[1];
// Graphyte layers
par[1] = 0.003/2;
ycoor += par[1];
gMC->Gsvolu("FGRL","BOX",idtmed[502],par,3);
gMC->Gspos("FGRL",1,"FSTR",0.,ycoor,0.,0,"ONLY");
gMC->Gspos("FGRL",2,"FSTR",0.,-ycoor,0.,0,"ONLY");
// Freon sensitive layer
par[0] = -1;
par[1] = 0.110/2.;
par[2] = zSenStrip/2.;
gMC->Gsvolu("FCFC","BOX",idtmed[513],par,3);
gMC->Gspos("FCFC",0,"FNSF",0.,0.,0.,0,"ONLY");
// Pad definition x & z
gMC->Gsdvn("FLZ","FCFC", nz, 3);
gMC->Gsdvn("FLX","FLZ" , nx, 1);
// MRPC pixel itself
par[0] = -1;
par[1] = -1;
par[2] = -1;
gMC->Gsvolu("FPAD", "BOX ", idtmed[513], par, 3);
gMC->Gspos("FPAD", 0, "FLX", 0., 0., 0., 0, "ONLY");
//// Positioning the Strips (FSTR) in the FLT volumes /////
// 3 (Central) Plate
Float_t t = zFLT1+zFLT2+zFLT3/2.+7.*2.5;//Half Width of Barrel
Float_t zpos = 0;
Float_t ang;
Float_t Offset;
Float_t last;
nrot = 0;
Int_t i=1,j=1;
zcoor=0;
Int_t UpDown=-1; // UpDown=-1 -> Upper strip, UpDown=+1 -> Lower strip
do{
ang = atan(zcoor/t);
ang = ang*kRaddeg;
AliMatrix (idrotm[nrot] ,90., 0.,90.-ang,90.,-ang,90.);
AliMatrix (idrotm[nrot+1],90.,180.,90.+ang,90.,ang,90.);
ycoor = -29./2.+ Space; //2 cm over front plate
ycoor += (1-(UpDown+1)/2)*Gap;
gMC->Gspos("FSTR",j,"FLT3",0.,ycoor,zcoor,idrotm[nrot],"ONLY");
gMC->Gspos("FSTR",j+1,"FLT3",0.,ycoor,-zcoor,idrotm[nrot+1],"ONLY");
ang = ang/kRaddeg;
zcoor=zcoor-(zSenStrip/2)/TMath::Cos(ang)+UpDown*Gap*TMath::Tan(ang)-(zSenStrip/2)/TMath::Cos(ang);
UpDown*= -1; // Alternate strips
i++;
j+=2;
} while (zcoor-(StripWidth/2)*TMath::Cos(ang)>-t+zFLT1+zFLT2+7*2.5);
ycoor = -29./2.+ Space; //2 cm over front plate
// Plate 2
zpos = -zFLT3/2-7;
ang = atan(zpos/sqrt(2*t*t-zpos*zpos));
Offset = StripWidth*TMath::Cos(ang)/2;
zpos -= Offset;
nrot = 0;
i=1;
// UpDown has not to be reinitialized, so that the arrangement of the strips can continue coherently
do {
ang = atan(zpos/sqrt(2*t*t-zpos*zpos));
ang = ang*kRaddeg;
AliMatrix (idrotm[nrot], 90., 0., 90.-ang,90.,ang, 270.);
ycoor = -29./2.+ Space ; //2 cm over front plate
ycoor += (1-(UpDown+1)/2)*Gap;
zcoor = zpos+(zFLT3/2.+7+zFLT2/2); // Moves to the system of the centre of the modulus FLT2
gMC->Gspos("FSTR",i, "FLT2", 0., ycoor, zcoor,idrotm[nrot], "ONLY");
ang = ang/kRaddeg;
zpos = zpos - (zSenStrip/2)/TMath::Cos(ang)+UpDown*Gap*TMath::Tan(ang)-(zSenStrip/2)/TMath::Cos(ang);
last = StripWidth*TMath::Cos(ang)/2;
UpDown*=-1;
i++;
} while (zpos-(StripWidth/2)*TMath::Cos(ang)>-t+zFLT1+7);
// Plate 1
zpos = -t+zFLT1+3.5;
ang = atan(zpos/sqrt(2*t*t-zpos*zpos));
Offset = StripWidth*TMath::Cos(ang)/2.;
zpos -= Offset;
nrot = 0;
i=0;
ycoor= -29./2.+Space+Gap/2;
do {
ang = atan(zpos/sqrt(2*t*t-zpos*zpos));
ang = ang*kRaddeg;
AliMatrix (idrotm[nrot], 90., 0., 90.-ang,90.,ang, 270.);
i++;
zcoor = zpos+(zFLT1/2+zFLT2+zFLT3/2+7.*2.);
gMC->Gspos("FSTR",i, "FLT1", 0., ycoor, zcoor,idrotm[nrot], "ONLY");
ang = ang /kRaddeg;
zpos = zpos - zSenStrip/TMath::Cos(ang);
last = StripWidth*TMath::Cos(ang)/2.;
} while (zpos>-t+7.+last);
printf("#######################################################\n");
printf(" Distance from the bound of the FLT3: zFLT3- %f cm \n", t+zpos-(zSenStrip/2)/TMath::Cos(ang));
ang = atan(zpos/sqrt(2*t*t-zpos*zpos));
zpos = zpos - zSenStrip/TMath::Cos(ang);
printf("NEXT Distance from the bound of the FLT3: zFLT3- %f cm \n", t+zpos-(zSenStrip/2)/TMath::Cos(ang));
printf("#######################################################\n");
////////// Layers after detector /////////////////
// Honeycomb layer after (3cm)
Float_t OverSpace = Space + 7.3;
/// StripWidth*TMath::Sin(ang) + 1.3;
par[0] = -1;
par[1] = 0.6;
par[2] = -1;
ycoor = -yFLT/2 + OverSpace + par[1];
gMC->Gsvolu("FPE1", "BOX ", idtmed[503], par, 3); // Hony
gMC->Gspos("FPE1", 0, "FLT1", 0., ycoor, 0., 0, "ONLY");
gMC->Gsvolu("FPE2", "BOX ", idtmed[503], par, 3); // Hony
gMC->Gspos("FPE2", 0, "FLT2", 0., ycoor, 0., 0, "ONLY");
gMC->Gsvolu("FPE3", "BOX ", idtmed[503], par, 3); // Hony
gMC->Gspos("FPE3", 0, "FLT3", 0., ycoor, 0., 0, "ONLY");
// Electronics (Cu) after
ycoor += par[1];
par[0] = -1;
par[1] = 1.43*0.05 / 2.; // 5% of X0
par[2] = -1;
ycoor += par[1];
gMC->Gsvolu("FEC1", "BOX ", idtmed[501], par, 3); // Cu
gMC->Gspos("FEC1", 0, "FLT1", 0., ycoor, 0., 0, "ONLY");
gMC->Gsvolu("FEC2", "BOX ", idtmed[501], par, 3); // Cu
gMC->Gspos("FEC2", 0, "FLT2", 0., ycoor, 0., 0, "ONLY");
gMC->Gsvolu("FEC3", "BOX ", idtmed[501], par, 3); // Cu
gMC->Gspos("FEC3", 0, "FLT3", 0., ycoor, 0., 0, "ONLY");
// Cooling water after
ycoor += par[1];
par[0] = -1;
par[1] = 36.1*0.02 / 2.; // 2% of X0
par[2] = -1;
ycoor += par[1];
gMC->Gsvolu("FWA1", "BOX ", idtmed[515], par, 3); // Water
gMC->Gspos("FWA1", 0, "FLT1", 0., ycoor, 0., 0, "ONLY");
gMC->Gsvolu("FWA2", "BOX ", idtmed[515], par, 3); // Water
gMC->Gspos("FWA2", 0, "FLT2", 0., ycoor, 0., 0, "ONLY");
gMC->Gsvolu("FWA3", "BOX ", idtmed[515], par, 3); // Water
gMC->Gspos("FWA3", 0, "FLT3", 0., ycoor, 0., 0, "ONLY");
//back plate honycomb (2cm)
par[0] = -1;
par[1] = 2 / 2.;
par[2] = -1;
ycoor = yFLT/2 - par[1];
gMC->Gsvolu("FEG1", "BOX ", idtmed[503], par, 3); // Hony
gMC->Gspos("FEG1", 0, "FLT1", 0., ycoor, 0., 0, "ONLY");
gMC->Gsvolu("FEG2", "BOX ", idtmed[503], par, 3); // Hony
gMC->Gspos("FEG2", 0, "FLT2", 0., ycoor, 0., 0, "ONLY");
gMC->Gsvolu("FEG3", "BOX ", idtmed[503], par, 3); // Hony
gMC->Gspos("FEG3", 0, "FLT3", 0., ycoor, 0., 0, "ONLY");
}
//_____________________________________________________________________________
void AliTOFv2::DrawModule()
{
//
// Draw a shaded view of the Time Of Flight version 1
//
// Set everything unseen
gMC->Gsatt("*", "seen", -1);
//
// Set ALIC mother transparent
gMC->Gsatt("ALIC","SEEN",0);
//
// Set the volumes visible
gMC->Gsatt("ALIC","SEEN",0);
gMC->Gsatt("FBAR","SEEN",1);
gMC->Gsatt("FTO1","SEEN",1);
gMC->Gsatt("FTO2","SEEN",1);
gMC->Gsatt("FTO3","SEEN",1);
gMC->Gsatt("FBT1","SEEN",1);
gMC->Gsatt("FBT2","SEEN",1);
gMC->Gsatt("FBT3","SEEN",1);
gMC->Gsatt("FDT1","SEEN",1);
gMC->Gsatt("FDT2","SEEN",1);
gMC->Gsatt("FDT3","SEEN",1);
gMC->Gsatt("FLT1","SEEN",1);
gMC->Gsatt("FLT2","SEEN",1);
gMC->Gsatt("FLT3","SEEN",1);
gMC->Gsatt("FPL1","SEEN",1);
gMC->Gsatt("FPL2","SEEN",1);
gMC->Gsatt("FPL3","SEEN",1);
gMC->Gsatt("FLD1","SEEN",1);
gMC->Gsatt("FLD2","SEEN",1);
gMC->Gsatt("FLD3","SEEN",1);
gMC->Gsatt("FLZ1","SEEN",1);
gMC->Gsatt("FLZ2","SEEN",1);
gMC->Gsatt("FLZ3","SEEN",1);
gMC->Gsatt("FLX1","SEEN",1);
gMC->Gsatt("FLX2","SEEN",1);
gMC->Gsatt("FLX3","SEEN",1);
gMC->Gsatt("FPA0","SEEN",1);
//
gMC->Gdopt("hide", "on");
gMC->Gdopt("shad", "on");
gMC->Gsatt("*", "fill", 7);
gMC->SetClipBox(".");
gMC->SetClipBox("*", 0, 1000, -1000, 1000, -1000, 1000);
gMC->DefaultRange();
gMC->Gdraw("alic", 40, 30, 0, 12, 9.5, .02, .02);
gMC->Gdhead(1111, "Time Of Flight");
gMC->Gdman(18, 4, "MAN");
gMC->Gdopt("hide","off");
}
//_____________________________________________________________________________
void AliTOFv2::CreateMaterials()
{
//
// Define materials for the Time Of Flight
//
AliTOF::CreateMaterials();
}
//_____________________________________________________________________________
void AliTOFv2::Init()
{
//
// Initialise the detector after the geometry has been defined
//
printf("**************************************"
" TOF "
"**************************************\n");
printf("\n Version 2 of TOF initialing, "
"with openings for PHOS and RICH in symmetric frame\n\n");
AliTOF::Init();
fIdFTO2=gMC->VolId("FTO2");
fIdFTO3=gMC->VolId("FTO3");
fIdFLT1=gMC->VolId("FLT1");
fIdFLT2=gMC->VolId("FLT2");
fIdFLT3=gMC->VolId("FLT3");
printf("**************************************"
" TOF "
"**************************************\n");
}
//_____________________________________________________________________________
void AliTOFv2::StepManager()
{
//
// Procedure called at each step in the Time Of Flight
//
TLorentzVector mom, pos;
Float_t hits[8],rho,phi,phid,z;
Int_t sector, plate, pad_x, pad_z, strip;
Int_t copy, pad_z_id, pad_x_id, strip_id, i;
Int_t *idtmed = fIdtmed->GetArray()-499;
if(gMC->GetMedium()==idtmed[513] &&
gMC->IsTrackEntering() && gMC->TrackCharge()
&& gMC->CurrentVolID(copy)==fIdSens)
{
TClonesArray &lhits = *fHits;
//_________getting information about hit volumes_____________
pad_z_id=gMC->CurrentVolOffID(2,copy);
pad_z=copy;
pad_x_id=gMC->CurrentVolOffID(1,copy);
pad_x=copy;
strip_id=gMC->CurrentVolOffID(5,copy);
strip=copy;
pad_z = (strip-1)*2+pad_z;
gMC->TrackPosition(pos);
gMC->TrackMomentum(mom);
rho = sqrt(pos[0]*pos[0]+pos[1]*pos[1]);
phi = TMath::ACos(pos[0]/rho);
Float_t as = TMath::ASin(pos[1]/rho);
if (as<0) phi = 2*3.141592654-phi;
z = pos[2];
if (z<=62. && z>=-62) plate = 3;
if (z<=216. && z>62.) plate = 4;
if (z>=-216. && z<-62.) plate = 2;
if (z>216.) plate = 5;
if (z<-216.) plate = 1;
phid = phi*kRaddeg;
sector = Int_t (phid/20.);
sector++;
Double_t ptot=mom.Rho();
Double_t norm=1/ptot;
for(i=0;i<3;++i) {
hits[i]=pos[i];
hits[i+3]=mom[i]*norm;
}
hits[6]=ptot;
hits[7]=pos[3];
new(lhits[fNhits++]) AliTOFhit(fIshunt,gAlice->CurrentTrack(),sector, plate, pad_x, pad_z, hits);
}
}