Hexagonal Mesh Collimator

[Petera777]

Hello everyone,
I’m quite new to Geant4, so please permit my ignorance.
Could someone please help me fix this error?

[evc]

There is no such constructor in G4ExtrudedSolid. The variables offsetC and scaleC are not needed.

[Petera777]

Thanks a lot, Sir. I did just that but it appears I’m using a wrong approach because it didn’t work.
Could you please advise on how to develop a hexagonal mesh like this;

[evc]

I would define the disk as a G4Tubs, and then place a set of hexagonal prisms (G4ExtrudedSolid) as daughter volumes into the disc.

[Petera777]

Thanks a lot, Sir. I’ll work on that and see how it comes out.

[Petera777]

Hello Sir,
Please I’ve gotten the geometry, but there seems to be a problem to “/run/beamOn”.
A lot seems to run from the command prompt and displays the attached info, but the display of the collimator simply vanishes when I try to “/run/beamOn”. I can’t also change the particle from “gamma” to “alpha”.

goes off, leaving just the command prompt.

Please, I’ll be grateful if you could help fix this.

[allison]

When the app hangs, you don’t always get all possible information in the GUI window. Please have a look in the terminal from which you launched the app - there might be some useful information there.

[Petera777]

Thanks a lot, Allison.
I’ll keep checking the terminal.

[Helen23]

Hello Petera777,

I need help. Thank you in advance for your quick response.

How did you manage to replicate the hexagonal prisms?
did it worked without them overlaping?

Thank you
Helen