Changeset 2047

Timestamp:

04/30/03 08:32:17 (21 years ago)

Author:

moralejo

Message:

*** empty log message ***

File:

• trunk/MagicSoft/Simulation/Detector/ReflectorII/Changelog (modified) (2 diffs)

trunk/MagicSoft/Simulation/Detector/ReflectorII/Changelog

@@ -8 +8 @@
 a wrong mirror was chosen, which was actually further away from the impact 
 point than the mirror size, and therefore the photon was discarded later as
-"not hitting any mirror". Now we measure the distance on the paraboloid. The 
-new code is:
+"not hitting any mirror" (about 20% loss for eco1000) Now we measure the 
+distance on the paraboloid. The new code is:
 
   /*  calculate the mirror to be used */ 
@@ -24 +24 @@
     }
   }
+
+Now the "distance" we calculate on the paraboloid is not a real distance, 
+because sx,sy are measured along the cut between the paraboloid and planes 
+containing the paraboloid axis and the x or y axis... but this should not 
+matter much with such "flat" paraboloids. What cannot be done, as was before,
+is check the distance in the x,y,z space and then check whether the photon 
+is inside the mirror in the sx,sy space, because then we lose photons for 
+which a nearest mirror is chosen which in sx,sy is not close enough to 
+contain the photon.
 
 geometry.c: