generate_dunedphase10kt_v1.pl

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#!/usr/bin/perl

#
#  GDML fragment generator for DUNE dual-phase 10kt detector geometry 
#  adapted from single phase cryostat geometry script from Tyler Dalion
#  by Vyacheslav Galymov < vgalymov@ipnl.in2p3.fr >
#

#################################################################################
#
# contact tylerdalion@gmail.com for any GDML/generate questions
# I would love to help!

# Each subroutine generates a fragment GDML file, and the last subroutine
# creates an XML file that make_gdml.pl will use to appropriately arrange
# the fragment GDML files to create the final desired DUNE GDML file, 
# to be named by make_gdml output command

# If you are playing with different geometries, you can use the
# suffix command to help organize your work.
#
##################################################################################


#use warnings;
use gdmlMaterials;
use Math::Trig;
use Getopt::Long;
use Math::BigFloat;
Math::BigFloat->precision(-16);

GetOptions( "help|h" => \$help,
       "suffix|s:s" => \$suffix,
       "output|o:s" => \$output,
       "wires|w:s" => \$wires,  
            "workspace|k:s" => \$workspace); 

if ( defined $help )
{
    # If the user requested help, print the usage notes and exit.
    usage();
    exit;
}

if ( ! defined $suffix )
{
    # The user didn't supply a suffix, so append nothing to the file
    # names.
    $suffix = "";
}
else
{
    # Otherwise, stick a "-" before the suffix, so that a suffix of
    # "test" applied to filename.gdml becomes "filename-test.gdml".
    $suffix = "-" . $suffix;
}

if ( ! defined $workspace ) # not done 
{
    $workspace = 0;
}
elsif ( $workspace == 1)
{
    print "\t\tCreating smaller workspace geometry.\n";
}

# set wires on to be the default, unless given an input by the user
$wires_on = 1; # 1=on, 0=off
if (defined $wires)
{
    $wires_on = $wires
}

$tpc_on = 1;

$basename = "dune10ktdphase_v1";
if ( $wires_on == 0 )
{
    $basename = $basename."_nowires";
}

if ( $workspace == 1 )
{
    $basename = $basename."_workspace";
}

##################################################################
############## Parameters for Charge Readout Plane ###############

# dune10kt dual-phase
$wirePitch           = 0.3125;  # channel pitch
$nChannelsViewPerCRM = 960;     # channels per collection view
$borderCRM           = 0.5;     # dead space at the border of each CRM

# dimensions of a single Charge Readout Module (CRM)
$widthCRM_active  = $wirePitch * $nChannelsViewPerCRM;
$lengthCRM_active = $wirePitch * $nChannelsViewPerCRM;

$widthCRM  = $widthCRM_active + 2 * $borderCRM;
$lengthCRM = $lengthCRM_active + 2 * $borderCRM;

# number of CRMs in x and z
$nCRM_x   = 4;
$nCRM_z   = 20;

# create a smaller geometry
if( $workspace == 1 )
{
    $nCRM_x = 1;
    $nCRM_z = 2;
}

# calculate tpc area based on number of CRMs and their dimensions
$widthTPCActive  = $nCRM_x * $widthCRM;  # around 1200
$lengthTPCActive = $nCRM_z * $lengthCRM; # around 6000

# active volume dimensions 
$driftTPCActive  = 1200.0;

# model anode strips as wires
$padWidth  = 0.015;
$ReadoutPlane = 2 * $padWidth;

#$padHeight = 0.0035; 

##################################################################
############## Parameters for TPC and inner volume ###############

# inner volume dimensions of the cryostat
$Argon_x = 1510;
$Argon_y = 1510;
$Argon_z = 6200;

# width of gas argon layer on top
$HeightGaseousAr = 100;

# size of liquid argon buffer
$xLArBuffer = 0.5 * ($Argon_x  - $widthTPCActive);
$yLArBuffer = $Argon_y - $driftTPCActive - $HeightGaseousAr - $ReadoutPlane;
$zLArBuffer = 0.5 * ($Argon_z - $lengthTPCActive);

# cryostat 
$SteelThickness = 0.12; # membrane

$Cryostat_x = $Argon_x + 2*$SteelThickness;
$Cryostat_y = $Argon_y + 2*$SteelThickness;
$Cryostat_z = $Argon_z + 2*$SteelThickness;

##################################################################
############## DetEnc and World relevant parameters  #############

$SteelSupport_x  =  100;
$SteelSupport_y  =  50;
$SteelSupport_z  =  100; 
$FoamPadding     =  80;  # only 2 layers ???
$FracMassOfSteel =  0.5; #The steel support is not a solid block, but a mixture of air and steel
$FracMassOfAir   =  1 - $FracMassOfSteel;


$SpaceSteelSupportToWall    = 100;
$SpaceSteelSupportToCeiling = 100;

$DetEncWidth   =    $Cryostat_x
                  + 2*($SteelSupport_x + $FoamPadding) + 2*$SpaceSteelSupportToWall;
$DetEncHeight  =    $Cryostat_y
                  + 2*($SteelSupport_y + $FoamPadding) + $SpaceSteelSupportToCeiling;
$DetEncLength  =    $Cryostat_z
                  + 2*($SteelSupport_z + $FoamPadding) + 2*$SpaceSteelSupportToWall;

$posCryoInDetEnc_y = - $DetEncHeight/2 + $SteelSupport_y + $FoamPadding + $Cryostat_y/2;

$RockThickness = 3000;

  # We want the world origin to be at the very front of the fiducial volume.
  # move it to the front of the enclosure, then back it up through the concrete/foam, 
  # then through the Cryostat shell, then through the upstream dead LAr (including the
  # dead LAr on the edge of the TPC)
  # This is to be added to the z position of every volume in volWorld

$OriginZSet =   $DetEncLength/2.0 
              - $SpaceSteelSupportToWall
              - $SteelSupport_z
              - $FoamPadding
              - $SteelThickness
              - $zLArBuffer;

  # We want the world origin to be vertically centered on active TPC
  # This is to be added to the y position of every volume in volWorld

$OriginYSet =   $DetEncHeight/2.0
              - $SteelSupport_y
              - $FoamPadding
              - $SteelThickness
              - $yLArBuffer
              - $driftTPCActive/2.0;

$OriginXSet =  0; # centered for now


##################################################################
############### Parameters for det elements ######################

# cathode plane
$Cathode_x = $widthTPCActive;
$Cathode_y = 1.0;
$Cathode_z = $lengthTPCActive;



#+++++++++++++++++++++++++ End defining variables ++++++++++++++++++++++++++


#+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
#+++++++++++++++++++++++++++++++++++++++++ usage +++++++++++++++++++++++++++++++++++++++++
#+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

sub usage()
{
    print "Usage: $0 [-h|--help] [-o|--output <fragments-file>] [-s|--suffix <string>]\n";
    print "       if -o is omitted, output goes to STDOUT; <fragments-file> is input to make_gdml.pl\n";
    print "       -s <string> appends the string to the file names; useful for multiple detector versions\n";
    print "       -h prints this message, then quits\n";
}



#+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
#++++++++++++++++++++++++++++++++++++++ gen_Define +++++++++++++++++++++++++++++++++++++++
#+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

sub gen_Define()
{

# Create the <define> fragment file name, 
# add file to list of fragments,
# and open it
    $DEF = $basename."_Def" . $suffix . ".gdml";
    push (@gdmlFiles, $DEF);
    $DEF = ">" . $DEF;
    open(DEF) or die("Could not open file $DEF for writing");


print DEF <<EOF;
<?xml version='1.0'?>
<gdml>
<define>

<!--



-->

   <position name="posCryoInDetEnc"     unit="cm" x="0" y="$posCryoInDetEnc_y" z="0"/>
   <position name="posCenter"           unit="cm" x="0" y="0" z="0"/>
   <rotation name="rPlus90AboutX"       unit="deg" x="90" y="0" z="0"/>
   <rotation name="rMinus90AboutY"      unit="deg" x="0" y="270" z="0"/>
   <rotation name="rMinus90AboutYMinus90AboutX"       unit="deg" x="270" y="270" z="0"/>
   <rotation name="rPlus180AboutX" unit="deg" x="180" y="0"   z="0"/>
   <rotation name="rPlus180AboutY" unit="deg" x="0" y="180"   z="0"/>
   <rotation name="rPlus180AboutXPlus180AboutY"    unit="deg" x="180" y="180"   z="0"/>
   <rotation name="rIdentity"              unit="deg" x="0" y="0"   z="0"/>
</define>
</gdml>
EOF
    close (DEF);
}

#+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
#+++++++++++++++++++++++++++++++++++++ gen_Materials +++++++++++++++++++++++++++++++++++++
#+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

sub gen_Materials()
{

# Create the <materials> fragment file name,
# add file to list of output GDML fragments,
# and open it
    $MAT = $basename."_Materials" . $suffix . ".gdml";
    push (@gdmlFiles, $MAT);
    $MAT = ">" . $MAT;

    open(MAT) or die("Could not open file $MAT for writing");

    # Add any materials special to this geometry by defining a mulitline string
    # and passing it to the gdmlMaterials::gen_Materials() function.
my $asmix = <<EOF;
  <!-- preliminary values -->
  <material name="AirSteelMixture" formula="AirSteelMixture">
   <D value=" 0.001205*(1-$FracMassOfSteel) + 7.9300*$FracMassOfSteel " unit="g/cm3"/>
   <fraction n="$FracMassOfSteel" ref="STEEL_STAINLESS_Fe7Cr2Ni"/>
   <fraction n="$FracMassOfAir"   ref="Air"/>
  </material>
EOF

    # add the general materials used anywere
    print MAT gdmlMaterials::gen_Materials( $asmix );

    close(MAT);
}

#+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
#++++++++++++++++++++++++++++++++++++++++ gen_TPC ++++++++++++++++++++++++++++++++++++++++
#+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
sub gen_TPC()
{
    # CRM active volume
    my $TPCActive_x = $widthCRM_active;
    my $TPCActive_y = $driftTPCActive;
    my $TPCActive_z = $lengthCRM_active;

    # CRM total volume
    my $TPC_x = $widthCRM;
    my $TPC_y = $TPCActive_y + $ReadoutPlane;
    my $TPC_z = $lengthCRM;

   
    $TPC = $basename."_TPC" . $suffix . ".gdml";
    push (@gdmlFiles, $TPC);
    $TPC = ">" . $TPC;
    open(TPC) or die("Could not open file $TPC for writing");

# The standard XML prefix and starting the gdml
    print TPC <<EOF;
<?xml version='1.0'?>
<gdml>
EOF

    
    # All the TPC solids save the wires.
    print TPC <<EOF;
<solids>
   <box name="CRM" lunit="cm" 
      x="$TPC_x" 
      y="$TPC_y" 
      z="$TPC_z"/>
   <box name="CRMZPlane" lunit="cm" 
      x="$TPCActive_x" 
      y="$padWidth" 
      z="$TPCActive_z"/>
   <box name="CRMXPlane" lunit="cm" 
      x="$TPCActive_x" 
      y="$padWidth"
      z="$TPCActive_z"/>
   <box name="CRMActive" lunit="cm"
      x="$TPCActive_x"
      y="$TPCActive_y"
      z="$TPCActive_z"/>
EOF


#++++++++++++++++++++++++++++ Wire Solids ++++++++++++++++++++++++++++++
# in principle we only need only one wire solid, since CRM is a square 
# but to be more general ...

print TPC <<EOF;

   <tube name="CRMWireZ"
     rmax="0.5*$padWidth"
     z="$TPCActive_z"               
     deltaphi="360"
     aunit="deg"
     lunit="cm"/>
   <tube name="CRMWireX"
     rmax="0.5*$padWidth"
     z="$TPCActive_x"               
     deltaphi="360"
     aunit="deg"
     lunit="cm"/>
</solids>

EOF


# Begin structure and create wire logical volumes
print TPC <<EOF;
<structure>
    <volume name="volTPCActive">
      <materialref ref="LAr"/>
      <solidref ref="CRMActive"/>
    </volume>
EOF

if ($wires_on==1) 
{ 
  print TPC <<EOF;
    <volume name="volTPCWireZ">
      <materialref ref="Copper_Beryllium_alloy25"/>
      <solidref ref="CRMWireZ"/>
    </volume>

    <volume name="volTPCWireX">
      <materialref ref="Copper_Beryllium_alloy25"/>
      <solidref ref="CRMWireX"/>
    </volume>
EOF
}

print TPC <<EOF;

    <volume name="volTPCPlaneZ">
      <materialref ref="LAr"/>
      <solidref ref="CRMZPlane"/>
EOF

if ($wires_on==1) # add wires to Z plane
{
for($i=0;$i<$nChannelsViewPerCRM;++$i)
{
my $zpos = -0.5 * $TPCActive_z + $i*$wirePitch + 0.5*$padWidth;

print TPC <<EOF;
    <physvol>
      <volumeref ref="volTPCWireZ"/> 
      <position name="posWireZ$i" unit="cm" x="0" y="0" z="$zpos"/>
      <rotationref ref="rMinus90AboutY"/> 
    </physvol>
EOF
}
}

print TPC <<EOF;
   </volume>
   
   <volume name="volTPCPlaneX">
     <materialref ref="LAr"/>
     <solidref ref="CRMXPlane"/>
EOF


if ($wires_on==1) # add wires to X plane
{
for($i=0;$i<$nChannelsViewPerCRM;++$i)
{

my $xpos = -0.5 * $TPCActive_x + $i*$wirePitch + 0.5*$padWidth;
print TPC <<EOF;
    <physvol>
     <volumeref ref="volTPCWireX"/>
     <position name="posWireX$i" unit="cm" x="$xpos" y="0" z="0"/>
     <rotationref ref="rIdentity"/>
    </physvol>
EOF
}
}


print TPC <<EOF;
   </volume>
EOF


$posZplane[0] = 0;
$posZplane[1] = 0.5*$TPC_y - 0.5*$padWidth;
$posZplane[2] = 0;

$posXplane[0] = 0;
$posXplane[1] = 0.5*$TPC_y - 1.5*$padWidth;
$posXplane[2] = 0;

$posTPCActive[0] = 0;
$posTPCActive[1] = -$ReadoutPlane;
$posTPCActive[2] = 0;


#wrap up the TPC file
print TPC <<EOF;

   <volume name="volTPC">
     <materialref ref="LAr"/>
     <solidref ref="CRM"/>
     <physvol>
       <volumeref ref="volTPCPlaneZ"/>
       <position name="posPlaneZ" unit="cm" 
         x="$posZplane[0]" y="$posZplane[1]" z="$posZplane[2]"/>
       <rotationref ref="rIdentity"/>
     </physvol>
     <physvol>
       <volumeref ref="volTPCPlaneX"/>
       <position name="posPlaneX" unit="cm" 
         x="$posXplane[0]" y="$posXplane[1]" z="$posXplane[2]"/>
       <rotationref ref="rIdentity"/>
     </physvol>
     <physvol>
       <volumeref ref="volTPCActive"/>
       <position name="posActive" unit="cm" 
         x="$posTPCActive[0]" y="$posTPCActive[1]" z="$posTPCActive[2]"/>
       <rotationref ref="rIdentity"/>
     </physvol>
   </volume>
EOF


print TPC <<EOF;
</structure>
</gdml>
EOF

close(TPC);
}


#+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
#++++++++++++++++++++++++++++++++++++++ gen_Cryostat +++++++++++++++++++++++++++++++++++++
#+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

sub gen_Cryostat()
{

# Create the cryostat fragment file name,
# add file to list of output GDML fragments,
# and open it
    $CRYO = $basename."_Cryostat" . $suffix . ".gdml";
    push (@gdmlFiles, $CRYO);
    $CRYO = ">" . $CRYO;
    open(CRYO) or die("Could not open file $CRYO for writing");


# The standard XML prefix and starting the gdml
    print CRYO <<EOF;
<?xml version='1.0'?>
<gdml>
EOF

# All the cryostat solids.
print CRYO <<EOF;
<solids>
    <box name="Cryostat" lunit="cm" 
      x="$Cryostat_x" 
      y="$Cryostat_y" 
      z="$Cryostat_z"/>

    <box name="ArgonInterior" lunit="cm" 
      x="$Argon_x"
      y="$Argon_y"
      z="$Argon_z"/>

    <box name="GaseousArgon" lunit="cm" 
      x="$Argon_x"
      y="$HeightGaseousAr"
      z="$Argon_z"/>

    <subtraction name="SteelShell">
      <first ref="Cryostat"/>
      <second ref="ArgonInterior"/>
    </subtraction>

</solids>
EOF

# Cryostat structure
print CRYO <<EOF;
<structure>
    <volume name="volSteelShell">
      <materialref ref="STEEL_STAINLESS_Fe7Cr2Ni" />
      <solidref ref="SteelShell" />
    </volume>
    <volume name="volGaseousArgon">
      <materialref ref="ArGas"/>
      <solidref ref="GaseousArgon"/>
    </volume>

    <volume name="volCryostat">
      <materialref ref="LAr" />
      <solidref ref="Cryostat" />
      <physvol>
        <volumeref ref="volGaseousArgon"/>
        <position name="posGaseousArgon" unit="cm" x="0" y="$Argon_y/2-$HeightGaseousAr/2" z="0"/>
      </physvol>
      <physvol>
        <volumeref ref="volSteelShell"/>
        <position name="posSteelShell" unit="cm" x="0" y="0" z="0"/>
      </physvol>
EOF


if ($tpc_on==1) # place TPC inside croysotat
{

$posY =  $Argon_y/2 - $HeightGaseousAr - 0.5*($driftTPCActive + $ReadoutPlane); 
for($ii=0;$ii<$nCRM_z;$ii++)
{
    $posZ = -0.5*$Argon_z + $zLArBuffer + ($ii+0.5)*$lengthCRM;

    for($jj=0;$jj<$nCRM_x;$jj++)
    {
   $posX = -0.5*$Argon_x + $xLArBuffer + ($jj+0.5)*$widthCRM;
   print CRYO <<EOF;
      <physvol>
        <volumeref ref="volTPC"/>
   <position name="posTPC\-$ii\-$jj" unit="cm"
           x="$posX" y="$posY" z="$posZ"/>
      </physvol>
EOF
    }
}

}


print CRYO <<EOF;
    </volume>
</structure>
</gdml>
EOF

close(CRYO);
}



#+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
#+++++++++++++++++++++++++++++++++++++ gen_Enclosure +++++++++++++++++++++++++++++++++++++
#+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

sub gen_Enclosure()
{

# Create the detector enclosure fragment file name,
# add file to list of output GDML fragments,
# and open it
    $ENCL = $basename."_DetEnclosure" . $suffix . ".gdml";
    push (@gdmlFiles, $ENCL);
    $ENCL = ">" . $ENCL;
    open(ENCL) or die("Could not open file $ENCL for writing");


# The standard XML prefix and starting the gdml
    print ENCL <<EOF;
<?xml version='1.0'?>
<gdml>
EOF


# All the detector enclosure solids.
print ENCL <<EOF;
<solids>

    <box name="FoamPadBlock" lunit="cm"
      x="$Cryostat_x + 2*$FoamPadding"
      y="$Cryostat_y + 2*$FoamPadding"
      z="$Cryostat_z + 2*$FoamPadding" />

    <subtraction name="FoamPadding">
      <first ref="FoamPadBlock"/>
      <second ref="Cryostat"/>
      <positionref ref="posCenter"/>
    </subtraction>

    <box name="SteelSupportBlock" lunit="cm"
      x="$Cryostat_x + 2*$FoamPadding + 2*$SteelSupport_x"
      y="$Cryostat_y + 2*$FoamPadding + 2*$SteelSupport_y"
      z="$Cryostat_z + 2*$FoamPadding + 2*$SteelSupport_z" />

    <subtraction name="SteelSupport">
      <first ref="SteelSupportBlock"/>
      <second ref="FoamPadding"/>
      <positionref ref="posCenter"/>
    </subtraction>

    <box name="DetEnclosure" lunit="cm" 
      x="$DetEncWidth"
      y="$DetEncHeight"
      z="$DetEncLength"/>

</solids>
EOF


# Detector enclosure structure
    print ENCL <<EOF;
<structure>
    <volume name="volFoamPadding">
      <materialref ref="FD_foam"/>
      <solidref ref="FoamPadding"/>
    </volume>

    <volume name="volSteelSupport">
      <materialref ref="AirSteelMixture"/>
      <solidref ref="SteelSupport"/>
    </volume>

    <volume name="volDetEnclosure">
      <materialref ref="Air"/>
      <solidref ref="DetEnclosure"/>

       <physvol>
           <volumeref ref="volFoamPadding"/>
           <positionref ref="posCryoInDetEnc"/>
       </physvol>
       <physvol>
           <volumeref ref="volSteelSupport"/>
           <positionref ref="posCryoInDetEnc"/>
       </physvol>
       <physvol>
           <volumeref ref="volCryostat"/>
           <positionref ref="posCryoInDetEnc"/>
       </physvol>
EOF


print ENCL <<EOF;
    </volume>
EOF

print ENCL <<EOF;
</structure>
</gdml>
EOF

close(ENCL);
}



#+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
#+++++++++++++++++++++++++++++++++++++++ gen_World +++++++++++++++++++++++++++++++++++++++
#+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

sub gen_World()
{

# Create the WORLD fragment file name,
# add file to list of output GDML fragments,
# and open it
    $WORLD = $basename."_World" . $suffix . ".gdml";
    push (@gdmlFiles, $WORLD);
    $WORLD = ">" . $WORLD;
    open(WORLD) or die("Could not open file $WORLD for writing");


# The standard XML prefix and starting the gdml
    print WORLD <<EOF;
<?xml version='1.0'?>
<gdml>
EOF


# All the World solids.
print WORLD <<EOF;
<solids>
    <box name="World" lunit="cm" 
      x="$DetEncWidth+2*$RockThickness" 
      y="$DetEncHeight+2*$RockThickness" 
      z="$DetEncLength+2*$RockThickness"/>
</solids>
EOF

# World structure
print WORLD <<EOF;
<structure>
    <volume name="volWorld" >
      <materialref ref="DUSEL_Rock"/>
      <solidref ref="World"/>

      <physvol>
        <volumeref ref="volDetEnclosure"/>
   <position name="posDetEnclosure" unit="cm" x="$OriginXSet" y="$OriginYSet" z="$OriginZSet"/>
      </physvol>

    </volume>
</structure>
</gdml>
EOF

# make_gdml.pl will take care of <setup/>

close(WORLD);
}



#+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
#++++++++++++++++++++++++++++++++++++ write_fragments ++++++++++++++++++++++++++++++++++++
#+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

sub write_fragments()
{
   # This subroutine creates an XML file that summarizes the the subfiles output
   # by the other sub routines - it is the input file for make_gdml.pl which will
   # give the final desired GDML file. Specify its name with the output option.
   # (you can change the name when running make_gdml)

   # This code is taken straigh from the similar MicroBooNE generate script, Thank you.

    if ( ! defined $output )
    {
   $output = "-"; # write to STDOUT 
    }

    # Set up the output file.
    $OUTPUT = ">" . $output;
    open(OUTPUT) or die("Could not open file $OUTPUT");

    print OUTPUT <<EOF;
<?xml version='1.0'?>

<!-- Input to Geometry/gdml/make_gdml.pl; define the GDML fragments
     that will be zipped together to create a detector description. 
     -->

<config>

   <constantfiles>

      <!-- These files contain GDML <constant></constant>
           blocks. They are read in separately, so they can be
           interpreted into the remaining GDML. See make_gdml.pl for
           more information. 
      -->
      
EOF

    foreach $filename (@defFiles)
    {
   print OUTPUT <<EOF;
      <filename> $filename </filename>
EOF
    }

    print OUTPUT <<EOF;

   </constantfiles>

   <gdmlfiles>

      <!-- The GDML file fragments to be zipped together. -->

EOF

    foreach $filename (@gdmlFiles)
    {
   print OUTPUT <<EOF;
      <filename> $filename </filename>
EOF
    }

    print OUTPUT <<EOF;

   </gdmlfiles>

</config>
EOF

    close(OUTPUT);
}


print "Some key parameters for dual-phase LAr TPC (unit cm unless noted otherwise)\n";
print "CRM active area    : $widthCRM_active x $lengthCRM_active\n";
print "CRM total area     : $widthCRM x $lengthCRM\n";
print "TPC active volume  : $widthTPCActive x $driftTPCActive x $lengthTPCActive\n";
print "Argon buffer       : ($xLArBuffer, $yLArBuffer, $zLArBuffer) \n"; 
print "Detector enclosure : $DetEncWidth x $DetEncHeight x $DetEncLength\n";
print "TPC Origin         : ($OriginXSet, $OriginYSet, $OriginZSet) \n";

# run the sub routines that generate the fragments

gen_Define();       # generates definitions at beginning of GDML
gen_Materials(); # generates materials to be used
gen_TPC();       # generate TPC for a given unit CRM
gen_Cryostat();  # 
gen_Enclosure(); # 
gen_World();        # places the enclosure among DUSEL Rock


write_fragments(); # writes the XML input for make_gdml.pl
              # which zips together the final GDML
exit;