TT-Geant4 test page
This page shows my trial to check
Geant4 simulation especially on the calorimeter.
(3) 28/Oct/2004 : Range and Energy cut off parameter
is studied again
by Geant 4
(version 6.2) .
With the same detector at (1: 100 layers of 8mm thick Lead and 2mm
thick scintillator plates of 1mx1m sandwiched ), we have
simulated at incident
energy of 1GeV for electrons.
(3-1) A FUNNY behavior of Range cut
parameter vs Energy cut parameter
(3-2) Total Energy
measured in the
scintillators as a function of input range cut parameters
There I found the same events generated where the range
cut which applied by /run/particle/setCut xxxx mm parameters are
smaller than 0.0005mm.
(3-3) the energy resolution as a
function of range cut parameter, again the same events are included.
(2) 3/March/2004 : cut off parameter is set to be
0.0003mm for all case at again Geant 4
(version 5.00-patch01) .
With the same detector at (1), we have simulated at incident
energy of 1,2,4,10,20 and
50GeV for both pions and electrons. It takes long time, because the
G4-simulation with such small step requires hugh amount of
CPU power...
(2-1)
the linearity picture.
(2-2) the e/pi ratio picture which is
Ee/Epi
(2-3) the energy resolution as a
function of incident
energy.
(1) 20/Feb/2004 : Geant 4
(version 5.00-patch01) cut off (named range) parameter is
tested. The result
is we have to set it to be smaller than
0.0003mm!!! The default value in example N03 is 1mm!!! BE
CAREFULL.
(1-1) the detector is 8mmPb+2mmScintillator sandwich
cal. of
1mx1m to simulate the T405/T411 experiment at KEK by JLC-CAL.
An event of 1 GeV
electron
(1-2) the deposit energy distribution at cut = 1mm and
0.00003mm.
(1-3) the deposit energy
as a function of
the cutoff parameter.
(1-4-1) an event
of 2 GeV electron without photons drawn.
(1-4-2) an
event of 20 GeV electron without photons drawn.
(1-4-3) an
event of 2 GeV pion without photons drawn.
(0) our REAL data (JLC-CAL)
(0-1) e/pi ratio as a
function of the
lead plate thickness (d) for the thickess
of the scintillator =2mm case.
(0-2) Energy
resolution as a function
of the lead plate thickness(d) for the
thickess of the scintillator = 2mm case.
(0-3) e/pi ratio as a function of
energy
(0-4) Energy
resolution
as a functiion
of 1/sqrt(incident energy) for electrons
and pions. Energy
resolution
as a functiion
of (incident energy) for electrons
and pions.
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