Problems with cylindricalPET reconstrution for Cherenkov Photons....

Dear CASToR users,

I have been able to use CASToR reconstruction with a conventional CylindricalPET with nice results. However, I’m having problems with adapt my PETscanner for Cherenkov Photons to a CylindricalPET.

For my PETscanner I was defined previously the attach part as follows:

/gate/systems/PETscanner/level1/attach block

/gate/systems/PETscanner/level2/attach radiator

/gate/systems/PETscanner/level3/attach window

/gate/systems/PETscanner/level4/attach photodetector


The block which is the structure that I repeat in the ring (I have 4 rings) is now my rsector. The problem is that my radiator (PbF2), my window and my photodetector (SiPM) are all inside this main block and I repeat each structure individually inside the block. I c**ant define in the attach part my window as a submodule because isnt a box inside the radiator and I c**ant define my photodetector as a crystal because is**n’t a box inside the window….

I used setDepth4 (also tested with 2) and the reconstruction was**n’t useful….

/gate/systems/cylindricalPET/rsector/attach block

/gate/systems/cylindricalPET/module/attach radiator

/gate/systems/cylindricalPET/module/attach window

/gate/systems/cylindricalPET/module/attach photodetector


/gate/digitizer/Singles/insert opticaladder

/gate/digitizer/Singles/insert readout

/gate/digitizer/Singles/readout/setDepth 4

I also attached the DaniaGeom.geom that was generated by CASToR in the config folder….

I think everything is in order except of course, the size of the PbF2 crystals….

Any help I would really appreciate it….

Kind regards,

Dania Consuegra Rodríguez

Phd student Jožef Stefan Institute

DaniaGeom.geom (1.84 KB)

Dear Maxime

Thanks for answering. You were right !!!

Redefining the attach part of my Geometry_CylPET.mac and using setDepth 4 I get my first images using CASToR for Cherenkov Photon PET….

Kind regards,

Dania Consuegra Rodríguez

Phd student Jožef Stefan Institute

Hi all,

Good to know, and thank you Maxime for your active contributions !