[Gate-users] No output from simulation

[Matthew Strugari]

Hi all,

It turns out that my output problem was due to my definition of the scintillator. I had defined it as the daughter of scintillatorHousing rather than SPECThead.

Cheers,
Matthew

________________________________
From: Olga Kochebina <kochebina at gmail.com>
Sent: May 25, 2019 10:29 AM
To: Matthew Strugari
Subject: Re: [Gate-users] No output from simulation

Hi Matthew,

>From the first look: I'd say that you don't generate enough events, i.e. you need to increase acquisition duration or/and activity.
The probability that a gamma is converted in NaI is about 10-20% from what I remember, i.e. not that high.
And as in your simulations there are schillings as well, the part of the gammas is attenuated there. One more test that you could do is to change the material of the schillings to Air and see, what happens. If my hypothesis is correct, you should start to see some hits in your root file.

Hopefully, it would help.

Cheers,
OIga




Le sam. 25 mai 2019 à 00:21, Matthew Strugari <matthew.strugari at dal.ca<mailto:matthew.strugari at dal.ca>> a écrit :
Hi everyone,

I am having difficulty obtaining any ROOT or projection output from my simulation and any insight would be greatly appreciated.

I'm running GATE version 8.2 with Geant4 10-5-patch-01 on Ubuntu 18.04. I was able to run the benchmark tests which all passed and the benchSPECT example generated ROOT and projection outputs which I am able to analyse. I setup my simulation in a similar manner to the benchSPECT macro although my geometry is specified with STL files for the most part. My simulation executes and primaries are generated (see attached image) but the only information contained in the .root file is the number of primaries with no information viewable from the Trees. The terminal output is comparable to the benchSPECT simulation and no relevant warnings are generated.

I have attached the .root file and the GATE macro with the corresponding output from the terminal. I still need to make a number of modifications but I figured it would be best to start with a working simulation before fine-tuning anything. Please let me know if you have any information or tips.

Thank you!

Matthew


--

Matthew Strugari

Biomedical Translational Imaging Centre - BIOTIC,
5890 University Ave,
Halifax, NS, B3K 6R8

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