[ RadSafe ] Monte Carlo Modeling
Brennan, Mike (DOH)
Mike.Brennan at DOH.WA.GOV
Thu May 27 11:52:43 CDT 2010
Or, sometime soon, someone will write an Iphone app for that.
From: radsafe-bounces at health.phys.iit.edu
[mailto:radsafe-bounces at health.phys.iit.edu] On Behalf Of
JPreisig at aol.com
Sent: Wednesday, May 26, 2010 8:51 PM
To: radsafe at health.phys.iit.edu
Subject: [ RadSafe ] Monte Carlo Modeling
This is from: jpreisig at aol.com .
Hope all is well where you live and work. A recent posting
using a computational code for solving a health physics problem,
resorting to Monte Carlo modeling. Hey, to solve Health Physics
try to get an analytical solution with pad and paper. If that
a solution using a computational code. If this doesnt work, then
to Monte Carlo modeling, if you can. Not all workplaces allow
the time and/or facilities to do Monte Carlo modeling.
These days, one can get significant computing memory <3
memory and 300 Gigabytes storage memory???> for one or 2 thousand
dollars or less. A Fortran compiler <Compaq/Intel>, for those of
not making the leap to other programming languages, can be had for
something like 1000 dollars or so. Such a compiler can include the
<International Mathematical Statistical Library> software library,
very handy to have. MCNP <Monte Carlo Neutral Particle> program
gotten from RSICC <Radiation Shielding Information Center> at Oak
or possibly from Los Alamos. This computer code can be used to
neutron and/or x-ray/gamma problems. EGS <Electron Gamma Shower>
can be tracked down on the web and ordered for use in electron
problems. CASIM, MARS, LAHET, FLUKA, MCNPX, etc. can be ordered
from RSICC or other sources.
Such Monte Carlo codes have a non-trivial learning curve,
it takes a
while to set up problem geometries and to do other things. Not all
workplaces can afford such a devotion of time and/or financial
Still, I think many problems can be set up computationally in a day
And with today's computers, many problems can be run in under a day
less. Do what you will --- I don't make money on sale of these
For neutron data unfolding, look at the computer codes:
LOUHI, MAXED, BUNKI, etc. See Patterson and Thomas's book
Accelerator Health Physics <if you can find a copy> for solution
See also Cossairt's Course notes on Accelerator Health Physics.
One can use the repeated structure capability of MCNP to
model nuclear reactor design problems.
As for small nuclear reactors soon??? to be available to
power for small towns etc., how cool is that. The NRC will
to hire more NRC inspectors, if the sale of such reactors takes
I doubt the NRC paperwork for such a reactor will be too complex,
such a reactor is simpler than a power reactor <PWR/BWR>. We'll
A local cable TV program keeps suggesting that the power
runs the nuclear reactors in South New Jersey will be looking to
construct one more new reactor in South Jersey <not Oyster Creek>.
Again, we'll see what happens.
Too bad Fermi never had a copy of MCNP to run. I heard a
he used to do Monte Carlo calculations in his head at night,
had trouble sleeping. Too much expresso????!!!!
The matter/antimatter mass difference in nature is being
via the difference in muon versus anti-muon decay rates <see
Brookhaven, CERN, etc. websites>.
You all have a good week!!!!!
Regards, Joseph R. <Joe> Preisig, Ph.D.
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