[Gate-users] Track stuck or not moving

[Catherine Costa Oliveira da Silva]

Hi Howard,

I had the same problem as you.
If you are using a voxelized phantom with the setting
"ImageRegularParametrisedVolume", try to change for
"ImageNestedParametrisedVolume".

Best Regards,
*Catherine *

Em dom, 22 de set de 2019 às 22:48, Howard <lomahu at gmail.com> escreveu:

> Hi Matthew and Svetlana,
>
> Thank you for your replies. Can you a bit more specific about the
> production cuts? In the warning it says:
>
> ......
> Trying pushing it of 1e-07 mm ...Potential overlap in geometry!
>
> But I do not know what to change in my scripts though. I do not believe I
> have overlapping geometry since the same geometry was working totally fine
> when I tried to generate 2x10^7 events. Still confused.
>
> Howard
>
> On Sun, Sep 22, 2019 at 2:39 PM Matthew Strugari <matthew.strugari at dal.ca>
> wrote:
>
>> Have you verified that your geometry is not overlapping?
>>
>> Matthew
>>
>> On Sep 22, 2019, at 2:14 PM, Svetlana Shasharina <sveta at txcorp.com>
>> wrote:
>>
>> Hi,
>>
>> You would try to change production cuts to be a little bit bigger.
>>
>> Best,
>>
>> Svetlana
>> On 9/22/19 10:52 AM, Howard wrote:
>>
>> Hi,
>>
>> I was simulating a X-ray imaging process with 2 x 10^9 events. It has
>> been running over 5200 minutes and still ongoing. From the output I saw the
>> following warning message about "Track stuck or not moving" as attached
>> below (multiple times). However, when I ran 2 x 10^7 events I did not have
>> the same warming issue and the simulation was completed < 20 hours
>> successfully. Should I worry about this warning or just ignore it and
>> continue to wait? Thanks a lot!
>>
>> Howard
>>
>> -------- WWWW ------- G4Exception-START -------- WWWW -------
>> *** G4Exception : GeomNav1002
>>       issued by : G4Navigator::ComputeStep()
>> Track stuck or not moving.
>>           Track stuck, not moving for 10 steps
>>           in volume -world_phys- at point
>> (-5.649999594721559,4.81816525126774,-38.09301491743752) (local point
>> (-5.649999594721559,4.81816525126774,-38.09301491743752))
>>           direction:
>> (0.6222482514791153,-0.3555437239478714,0.6974208011612956) (local
>> direction: (0.6222482514791153,-0.3555437239478714,0.6974208011612956)).
>>           Potential geometry or navigation problem !
>>           Trying pushing it of 1e-07 mm ...Potential overlap in geometry!
>>
>> *** This is just a warning message. ***
>> -------- WWWW -------- G4Exception-END --------- WWWW -------
>>
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