[Gate-users] about "Forbid" command in GATE simulation

[山中 琢]

Hi Kaiyang Li,

Thanks so much about your informative notes!
I also could "forbid" the source.
Also congrats about your successful multiple cold area testing!

[image: 埋め込み画像 2]

I'm still studying about the image reconstruction, so I don't have the
reconstructed image.
This is the visualized source in the GATE visualization window.

I'll try the multiple cold area, too.

Taku

2012/12/14 Kaiyang Li <kl780 at uowmail.edu.au>

>  Hi Taku,
>
> Great news!
> The multiple cold area is working!
> If you have any question, I would like to offer some suggestions.
>
> Kind Regards,
> Kaiyang Li
>
>
>
>
>  ------------------------------
> *From:* taku229 at gmail.com [taku229 at gmail.com] on behalf of 山中 琢 [
> takuyama at med.hokudai.ac.jp]
> *Sent:* Friday, 14 December 2012 1:30 AM
> *To:* Kaiyang Li; gate-users
> *Subject:* Re: about "Forbid" command in GATE simulation
>
>  Hello Kaiyang Li,
>
> I'm still struggling with "forbid".
>
> I tried the simple geometry, too, but my simulation stops with
> "***Break*** segmentation violation" and I cannot proceed to even see the
> reconstructed image... this didn't happen before...
>
> Anyway, it seems the command is working somehow.
> When I tried to forbid the whole source by surrounding with the
> "forbidding" volume and start simulation, GATE gave me the message of
> "primaries were always generated in forbidden volumes!" and the simulation
> was shut down.
>
> Also, you can visualize the source by
> /gate/source/FictiveSource/visualize "count" "color" "size"
> This command should reflect the "forbid" as well, so we are supposed to be
> able to see the "forbidden" source... but...
>
> You can check how the "forbid" command works in GATE in
> GateSPSPosDistribution.cc line:150
>
> After all, I cannot give you any solution to this problem.
> I'll still work on with this, so if you find anything new, please let me
> know.
>
> Taku
>
> 2012/12/10 Kaiyang Li <kl780 at uowmail.edu.au>
>
>>  Hi Taku,
>>
>> My name is Kaiyang Li, a GATE user.
>> I have the problem of using "forbid" in my simulation. It seems that the
>> forbid area is simply
>> not forbidden at all.
>>
>> I have read all other questions, including yours. Have you figure it out
>> yet?
>> I have used GATE for half a year and run some other complex simulations
>> successfully but for this forbid one, it seems something is wrong.
>>
>> Here is my simple code followed by the GATE instruction:
>>
>> /gate/world/daughters/name cold_area
>> /gate/world/daughters/insert cylinder
>> /gate/cold_area/vis/forceWireframe
>> /gate/cold_area/vis/setColor green
>> /gate/cold_area/geometry/setRmax 2.0 mm
>> /gate/cold_area/geometry/setHeight 0.3 mm
>> /gate/cold_area/setMaterial Water
>>
>> /gate/run/initialize
>>
>> /gate/source/addSource number1
>> /gate/source/number1/setActivity 37000000. becquerel
>> /gate/source/number1/gps/particle gamma
>> /gate/source/number1/setType backtoback
>> /gate/source/number1/gps/monoenergy 511. keV
>> /gate/source/number1/setForcedUnstableFlag                     true
>> /gate/source/number1/setForcedHalfLife                6586 s
>> /gate/source/number1/gps/type Volume
>> /gate/source/number1/gps/shape Cylinder
>> /gate/source/number1/gps/radius 4. mm
>> /gate/source/number1/gps/halfz 0.15 mm
>> /gate/source/number1/gps/centre 0. 0. 0. mm
>> /gate/source/number1/gps/angtype iso
>> /gate/source/number1/gps/Forbid cold_area
>> /gate/source/number1/dump 1
>> /gate/source/list
>>
>> The reconstructed image shows that there is no forbidden area.
>> Probably the forbidden command is not working, what do you think?
>>
>>
>> Kind Regards,
>> Kaiyang Li
>>
>
>
>
> --
> Hokkaido University,  Graduate school of medicine, medical physics and
> engineering D1
> 北海道大学 大学院 医学研究科 医学物理工学分野 D1
> Taku Yamanaka
> 山中 琢
>
> takuyama at med.hokudai.ac.jp
> --
>



-- 
Hokkaido University,  Graduate school of medicine, medical physics and
engineering D1
北海道大学 大学院 医学研究科 医学物理工学分野 D1
Taku Yamanaka
山中 琢

takuyama at med.hokudai.ac.jp
--
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