Dear Anuj,
It is expected that a simulated energy deposition spectrum will look
"sharper" than an experimental pulse height spectrum, since the
experimental spectrum is a convolution of the energy deposition with the
detector resolution, electronics response etc. This is why it appears to be
wider and/or smeared out compared to the simulation.
If you want to directly compare the two, you could convolute the simulated
spectrum with a gaussian choosing an appropriate width until you get the
best match. You can go even further by making this width a function of
energy, which is more realistic.
You can find a useful discussion of this in Knoll's "Radiation Detection
and Measurement", chapter 6 "Proportional counters", section C "Energy
resolution".
I hope this helps,
Andrea
On Mon, Mar 7, 2016 at 9:54 PM, Vittorio Boccone <
dr.vittorio.boccone_at_ieee.org> wrote:
> Hi Anuj,
> I’m not sure if understand your question.
> Are you simulating you case with FLUKA or are you just trying to calculate
> your distribution analytically?
> What do you exactly mean by ”increase the width of the simulated energy
> loss distribution"
>
> Best,
> V.
>
> > On Feb 26, 2016, at 6:24 AM, anuj <anuj_at_crl.tifr.res.in> wrote:
> >
> > Dear Users,
> >
> > I want to calculate the energy loss of charged particles in P10(90% Ar +
> 10% CH4) gas
> > absorber inside the proportional counter of the dimension 600 cm long
> and 10 cm x 10 cm
> > cross section. I am simply using the landau distribution taken from root
> math library.
> > But by using this the energy loss distribution is narrower than the
> experimental pulse
> > height distribution.
> > Can anyone please tell me how I can increase the width of the simulated
> energy loss
> > distribution?
> >
> >
> > Kind Regards
> > Anuj Chandra
> > Cosmic Ray Laboratory, Ooty
> > TIFR(Mumbai), India.
> >
> > Open WebMail Project (http://openwebmail.org)
> >
> >
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Received on Tue Mar 08 2016 - 12:04:31 CET