[Gate-users] Help: The problem for getting beam transmission ratio in GATE

[Kyung-Nam Lee]

Hello, generous GATE users in the world.
 
In these days, I have tried to use GATE as a simualation tool for validation and effect of degrader in the beam nozzle.
 
As you know, Geant4 is one of the best tool for simulation of above mentioned thing.
 
But, i would like to use GATE for degrader simulation if we can get proper output from GATE.
 
To be specific, we hope to get beam transmission ratio after passing trough degrader.
 
I would like to know whether we can use GATE for getting this simulation or not.
 
If we can do it, please comment how we can get beam transmission ratio.
 
Thank you for your reading. 
 
 
 
-----Original Message-----
From: <gate-users-request at lists.opengatecollaboration.org> 
To: gate-users at lists.opengatecollaboration.org
Cc: 
Sent: 11-12-24(토) 20:00:01
Subject: Gate-users Digest, Vol 67, Issue 20
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Today's Topics:
1. Monte Carlo seed (Albert Hirtl)
----------------------------------------------------------------------
Message: 1
Date: Fri, 23 Dec 2011 11:28:08 +0100
From: Albert Hirtl <albert.hirtl at meduniwien.ac.at>
To: gate-users at lists.opengatecollaboration.org
Subject: [Gate-users] Monte Carlo seed
Message-ID: <4EF457B8.5070506 at meduniwien.ac.at>
Content-Type: text/plain; charset="iso-8859-1"; Format="flowed"
Dear Colleagues,
Some time ago I posted a problem concerning artefacts in the SPECT 
simulation output. It was solved by changing from "Ranlux64" to 
"MersenneTwister". In principal everything is fine now. However, 
sometimes some splits of the simulation on a Condor-grid seem to get 
lost. Meaning, they run much longer than all other splits. Until now we 
solve that by halting the respective simulation, change the seed 
manually and restart it again. Then, usually, the simulation finishes in 
a reasonable time. Did anyone observe that behaviour as well? Any ideas 
what might be the reason, or how that can be solved? It is only a minor 
problem, but if you have larger simulations with many splits it can 
become somewhat cumbersome to keep track on lost jobs.
The interesting part of our mac-file is:
---
/gate/random/setEngineName MersenneTwister
/gate/random/setEngineSeed auto
/gate/random/verbose 1
---
The simulation is simply a water filled tank with 50 MBq Tc-99m solution 
with 10 min of DAQ.
Any help would be greatly appreciated!
I wish you nice holidays,
Albert
-- 
Medizinische Universit?t Wien - Allgemeines Krankenhaus Wien
Universit?tsklinik f?r Nuklearmedizin
W?hringer G?rtel 18-20
1090 Wien
Austria
Tel.: +43 (0) 1 / 40400 5545
Web:
http://www.meduniwien.ac.at/user/albert.hirtl
http://www.meduniwien.ac.at/moccamed/
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