[Gate-users] Simple Particle Counting Actor

[David Boersma]

Hi Akiv,

It looks like you are looking for the phase space actor. Phase spaces 
can be used as input to a simulation, but also as output. A phase space 
actor attached a geometrical volume will collect a list of all particles 
that go through that volume. The favorite way to store this is in a 
"ROOT tree". The number of "entries" in the tree is the total number of 
particles (both primaries and secondaries) entering the volume, and you 
can use "the power of ROOT" to count subgroups of those particles (e.g. 
only primaries, or only particles with kinetic energy larger than some 
threshold value, etc).

Examples can be found here:
./benchmarks/benchImageNavigators/pet/mac/main.mac
./examples/example_dosimetry/brachytherapy/mac/main.mac
./examples/example_Radiotherapy/example4/mac/main.mac
./examples/example_Radiotherapy/example5/mac/main.mac
./examples/example_vpgtle/stage2/mac/main.mac

The radiotherapy examples have a 'PhS-Analysis.C' root macro that may 
help you get started with analyzing the contents of a phase space ROOT file.

(If you use Gate v8.0 or the development version from GitHub, then the 
examples are not included in the source tarball; you'll find them here: 
https://github.com/OpenGATE/GateContrib )

Good luck,
David B.

Den 07/06/2017 kl. 18:46, skrev Akiv Jhirad:
> Hello,
> 
> I have currently been using the DoseActor attached to a small geometry 
> (representing my detector) with a resolution of 1x1x1 along with the 
> NumberOfHits parameter, to find the total number of particles 
> interacting with my detector. Is there a better alternative to achieve 
> the same task?
> 
> I wanted to try the FluenceActor but don't want my output being of .mhd 
> format. Will I simply get the number of particles detected in my 
> detector if I just change the output format to .txt instead of .mhd?
> 
> --
> Best Regards,
> Akiv Jhirad
> 
> 
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