Geant4 complaints about LumiCalBackShield (CLD)

[atolosadelgado]

Hi,

I have run a geometry overlap check of CLD_o3_v01, with resolution of 300k points, latest key4hep stack. The output looks fine except for this issue,

-------- WWWW ------- G4Exception-START -------- WWWW -------

*** G4Exception : GeomSolids1001

     issued by : G4BooleanSolid::GetPointOnSurface()

Solid - LumiCalBackShield_envelope_shape_0x1b644830

All 100k attempts to generate a point on the surface have failed!

The solid created may be an invalid Boolean construct!

*** This is just a warning message. ***

-------- WWWW -------- G4Exception-END --------- WWWW -------

The cause of this message may be:

• the result of the Boolean operation is a NULL (empty) object,
• or the size of the resulting solid is extremely small compared to the size of the components of the Boolean operation.

I leave this note here, otherwise I will forget. If someone else wants to investigate it, let me know :)