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PHG4PileupGenerator.cc
Go to the documentation of this file.
Or view
the newest version in sPHENIX GitHub for file PHG4PileupGenerator.cc
1
#include "
PHG4PileupGenerator.h
"
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#include <
fun4all/Fun4AllReturnCodes.h
>
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#include <gsl/gsl_randist.h>
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#include <iostream>
// for operator<<, endl, basic_ostream
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using namespace
std;
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PHG4PileupGenerator::PHG4PileupGenerator
(
const
string
&
name
)
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:
PHG4ParticleGeneratorBase
(name)
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{
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return
;
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}
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PHG4PileupGenerator::~PHG4PileupGenerator
()
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{
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delete
_generator
;
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}
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int
PHG4PileupGenerator::Init
(
PHCompositeNode
*topNode)
23
{
24
if
(!
_generator
)
return
Fun4AllReturnCodes::EVENT_OK
;
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_generator
->
Init
(topNode);
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return
Fun4AllReturnCodes::EVENT_OK
;
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}
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int
PHG4PileupGenerator::InitRun
(
PHCompositeNode
*topNode)
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{
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//cout << "generator ptr: " << _generator << endl;
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if
(!
_generator
)
return
Fun4AllReturnCodes::EVENT_OK
;
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_generator
->
InitRun
(topNode);
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_ave_coll_per_crossing
=
_collision_rate
*
_time_between_crossings
* 1000.0 * 1
e
-9;
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_min_crossing
=
_min_integration_time
/
_time_between_crossings
;
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_max_crossing
=
_max_integration_time
/
_time_between_crossings
;
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return
Fun4AllReturnCodes::EVENT_OK
;
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}
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int
PHG4PileupGenerator::process_event
(
PHCompositeNode
*topNode)
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{
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if
(!
_generator
)
return
Fun4AllReturnCodes::EVENT_OK
;
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// toss multiple crossings all the way back
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for
(
int
icrossing =
_min_crossing
; icrossing <=
_max_crossing
; ++icrossing)
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{
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double
crossing_time =
_time_between_crossings
* icrossing;
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int
ncollisions = gsl_ran_poisson(
RandomGenerator
(),
_ave_coll_per_crossing
);
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if
(icrossing == 0) --ncollisions;
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for
(
int
icollision = 0; icollision < ncollisions; ++icollision)
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{
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_generator
->
set_t0
(crossing_time);
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_generator
->
process_event
(topNode);
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}
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}
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return
Fun4AllReturnCodes::EVENT_OK
;
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}
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int
PHG4PileupGenerator::Reset
(
PHCompositeNode
*topNode)
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{
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if
(!
_generator
)
return
Fun4AllReturnCodes::EVENT_OK
;
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_generator
->
Reset
(topNode);
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return
Fun4AllReturnCodes::EVENT_OK
;
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}
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int
PHG4PileupGenerator::ResetEvent
(
PHCompositeNode
*topNode)
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{
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if
(!
_generator
)
return
Fun4AllReturnCodes::EVENT_OK
;
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_generator
->
ResetEvent
(topNode);
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return
Fun4AllReturnCodes::EVENT_OK
;
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}
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int
PHG4PileupGenerator::EndRun
(
const
int
runnumber)
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{
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if
(!
_generator
)
return
Fun4AllReturnCodes::EVENT_OK
;
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_generator
->
EndRun
(runnumber);
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return
Fun4AllReturnCodes::EVENT_OK
;
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}
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int
PHG4PileupGenerator::End
(
PHCompositeNode
*topNode)
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{
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if
(!
_generator
)
return
Fun4AllReturnCodes::EVENT_OK
;
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_generator
->
End
(topNode);
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return
Fun4AllReturnCodes::EVENT_OK
;
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}
coresoftware
blob
master
simulation
g4simulation
g4main
PHG4PileupGenerator.cc
Built by
Jin Huang
. updated:
Wed Jun 29 2022 17:24:44
using
1.8.2 with
ECCE GitHub integration