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None Photon Propagation Problem after I change the geometry 

Keywords: elliptical mirror
Forum: Geometry
Date: 10 Oct, 2006
From: <hyao@jlab.org>

Hi Sir/Madam, I am doing simulation for gas cerenkov detector.

First I wrote code based on N06 example. And I saw the photons generated by electron were detected by pmt. And my purpose is to build an elliptical inner silver surface. However, I use 4 different geo and get 1 and 3 working, but 2 and 4 not. It seems it's associated with ellipsoid geometry. http://www.jlab.org/~hyao/pdf_files/question/

<--Code-->
ckovDetectorConstruction.cc Please see the "Volume-->Spherical Mirror" Part of the code. It's very easy to trig 4 geo on or off.

<--Stepping-->
1.Sphere1-Sphere0(sub_solid) working sphere-sphere.dat

2.Sphere1-ellipsoid0(sub_soid) not working sphere-ellipsoid.dat

3.Sphere(mother,silver)+Sphere(daughter,NitrogenGas) working sphere+sphere.dat

4.Sphere(mother,silver)+ellipsoid(daughter,NitrogenGas) not working sphere+ellipsoid.dat

<------------>
Also you can make the file and check the result.

Is there any clue what happened?

Thank you very much.

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