At today's DIRC meeting we discussed the need for applying an incident angle dependent reflectivity for the DIRC mirrors to match the data we've collected for the borosilicate/UV enhanced mirrors with an air gap. Currently a single reflectivity vs wavelength for each mirror is provide in the material description in hdds.
At today's DIRC meeting we discussed the need for applying an incident angle dependent reflectivity for the DIRC mirrors to match the data we've collected for the borosilicate/UV enhanced mirrors with an air gap. Currently a single reflectivity vs wavelength for each mirror is provide in the material description in hdds.
Adding this issue to the stack so we don't lose track of it and mentioning @rdom, since he had some suggestions on how to include this in the SteppingAction. And as a reminder to myself that the normal vector to the mirrors is computed already in the hit processing here https://github.com/JeffersonLab/HDGeant4/blob/49f42c364ae0530b9cd21e07dca2b14c52345cd0/src/GlueXSensitiveDetectorDIRC.cc#L191