status of dom simulator - ppl.phys.chiba-u.jp filestatus of dom simulator amanda/icecube meeting in...
Post on 03-Nov-2019
1 Views
Preview:
TRANSCRIPT
1
Planed software specRay-trace simulator based on Geant4PMT simulator based on ROOTSummary
Status of DOM simulator
AMANDA/IceCube meeting in BartolMar. 24, 2004
Kotoyo HoshinaChiba University
Ice
OM(DOM)
Planned software spec
K40
Ray tracing Simulator
BG Noise Simulator
Wave Length Shifter Simulator
PMT Simulator
&BG Noise Simlator
Photon Propagator PMT SimulatorRay tracing
Use Geant4 except for PMT simulator
How can we get the PMT solid?
3
Ray-trace Simulator based on Geant4
4
The PMT solid
Complicated Boolean solidscannot bedrawn correctlyComputing time will be longer
Use G4UnionSolid!
Problem:
5
Test of PMT solid
Test the solid by geantino
Kill tracks at the surface of PMT
Next :Install material properties!
6
Material properties
200 250 300 350 400 450 500 550 6000
0.2
0.4
0.6
0.8
1
pen
etra
tio
n (
I /
Io)
wave length [nm]
GEL:
General Electric
RTV6156A / B (1:1)
10 mm thickness
250 300 350 400 450 500 550 600
pen
etra
tio
n (
I /
Io)
wave length [nm]
0
0.2
0.4
0.6
0.8
1
Glass:
Borosilicate
10 mm thickness
penetration data taken by Eliza Resconi
200 250 300 350 400 450 500 550 6000
2
4
6
8
10
Ab
sorp
tio
n L
eng
th [
cm]
wave length [nm]
GEL:
General Electric
RTV6156A / B (1:1)
250 300 350 400 450 500 550 6000
2
4
6
8
10
Ab
sorp
tion
Len
gth
[cm
]
wave length [nm]
Glass:
Borosilicate
7
Material properties (DOM setup)
0.8(1cm Glass) x 0.7(1cm Gel) = 0.56(at PMT)
0.2
0.4
0.6
0.8
1
Angle [deg]
pen
etra
tion
(I
/ Io
)
0 10 6050403020 908070
Benthos grass + Gel
Wave Length : 340 nm
26 inch (~33cm)
1cm 1cm
Glass
PMT
Gel
Preliminary!
Problem: Polarized photons go into the infinite loop :-(
8
PMT Simulator based on ROOT
9
Software Structure
Well - ModularizedEquip wrapper class (DOMVModule) for future framework I/O facility -> Not yet! wait new framework
10
PhotoCathode Simulator(DOMPMTPhotoCathode)
Generate photo electron(s) from arrived photon(s) with taking into account of the Uniformity Map
INPUT: Arrival Photons
OUTPUT: PhotoElectrons
11
Charge Response Simulator 1(DOMPMTChargeResponce)
Single PE response can be represented Exp + gaussian
4 parameters:How can we reduce the number of parameters?---> see Next!
12
Charge Response Simulator 2
Gain curve: required measurementsq0, qtau: get from scaling factor and Gain!P_ex : const!
13
Charge Response Simulator 3(DOMPMTChargeResponse)
Multiple PE Charge Response is not yet implemented
Just add one function to adopt Multiple PE
INPUT: 1PE
OUTPUT:Charge[C]
RandomSeed
14
WaveForm Simulator(DOMPMTWaveForm)
INPUT:Charge[C]
Get Norm. factor form
Charge
OUTPUT:WaveFunc
5 pulsesSuperimposed
15
SummaryGeometrical implementation of Ray-trace simulator based on Geant4 is almost finished, however, there are remaining problems inside Geant4.Base structure of the PMT simulator based on ROOT has developed. Currently, only single p.e. response can be simulated.Next step:
Ray-trace sim: fix the geometrical problems and append optical properties to the materials (reflection, wavelength shift, etc)PMT sim : install multiple p.e. response and adopt new framework
top related