Changeset 2046 for trunk/MagicSoft/Simulation/Detector/ReflectorII

Timestamp:

04/29/03 23:47:38 (22 years ago)

Author:

moralejo

Message:

*** empty log message ***

Location:

trunk/MagicSoft/Simulation/Detector/ReflectorII

Files:

• Changelog (modified) (1 diff)
• geometry.c (modified) (1 diff)
• ph2cph.c (modified) (6 diffs)

trunk/MagicSoft/Simulation/Detector/ReflectorII/Changelog

@@ -1 +1 @@
 ** Add changes at the beginning! **
+
+29/04/2003 A. Moralejo
+
+ph2cph.c:
+Changed determination of which mirror element is hit. Before there was a 
+problem when going to very large distances from the mirror center, sometimes
+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:
+
+  /*  calculate the mirror to be used */ 
+
+  distmirr = 1000000.0f;
+        
+  for (i=0; i<ct_NMirrors && distmirr>=ct_RMirror; ++i) {
+    distmirr2 = (float) sqrt(SQR(ct_data[i].sx - sx) +
+                             SQR(ct_data[i].sy - sy));
+
+    if (distmirr2 < distmirr) {
+      i_mirror = i;
+      distmirr  = distmirr2;
+    }
+  }
+
+geometry.c:
+Small change in calculation of ct_nax_radius (introduced fabs, but nothing 
+changes)
 
 16/04/2003 A. Moralejo

trunk/MagicSoft/Simulation/Detector/ReflectorII/geometry.c

@@ -49 +49 @@
         if (12 != fscanf(geofile, "%d %f %f %f %f %f %f %f %f %f %f %f",
                          &ct_data[i].i,     &ct_data[i].f,
-                         &ct_data[i].sx,            &ct_data[i].sy,
-                         &ct_data[i].x,     &ct_data[i].y,      &ct_data[i].z,
-                         &ct_data[i].theta,  &ct_data[i].phi,
-                         &ct_data[i].xn,            &ct_data[i].yn,     &ct_data[i].zn))
+                         &ct_data[i].sx,    &ct_data[i].sy,
+                         &ct_data[i].x,     &ct_data[i].y,   &ct_data[i].z,
+                         &ct_data[i].theta, &ct_data[i].phi,
+                         &ct_data[i].xn,    &ct_data[i].yn,     &ct_data[i].zn))
           break;
 
-        ct_max_radius = (ct_data[i].sx > ct_max_radius? ct_data[i].sx : 
-                         ct_max_radius);
-        ct_max_radius = (ct_data[i].sy > ct_max_radius? ct_data[i].sy : 
-                         ct_max_radius);
+        ct_max_radius = 
+          (fabs(ct_data[i].sx) > ct_max_radius? fabs(ct_data[i].sx) : 
+           ct_max_radius);
+        ct_max_radius = 
+          (fabs(ct_data[i].sy) > ct_max_radius? fabs(ct_data[i].sy) : 
+           ct_max_radius);
       }
 

trunk/MagicSoft/Simulation/Detector/ReflectorII/ph2cph.c

@@ -142 +142 @@
 
   /*  get director cosines x,y on ground */  
-
   /*
   r[0] = 0.0;     
   r[1] = 0.0;    
-  r[2] = 1.0;    
+  r[2] = -1.0;    
   */
   /* CBC */
@@ -194 +193 @@
   applyMxV( OmegaCT, x, xCT );
   applyMxV( OmegaCT, r, rCT );        
+
 
   /* CBC */
@@ -293 +293 @@
   xcut[0] = xCT[0] + rCT[0]/rCT[2]*(xcut[2]-xCT[2]);
   xcut[1] = xCT[1] + rCT[1]/rCT[2]*(xcut[2]-xCT[2]);
-      
 
   /* CBC */
@@ -317 +316 @@
   }
 
+
   /*  calculate the mirror to be used */ 
 
@@ -322 +322 @@
         
   for (i=0; i<ct_NMirrors && distmirr>=ct_RMirror; ++i) {
-    distmirr2 = (float) sqrt(SQR(ct_data[i].x - xcut[0]) +
-                     SQR(ct_data[i].y - xcut[1]) +
-                     SQR(ct_data[i].z - xcut[2]));
+    distmirr2 = (float) sqrt(SQR(ct_data[i].sx - sx) +
+                             SQR(ct_data[i].sy - sy));
+
     if (distmirr2 < distmirr) {
       i_mirror = i;
@@ -332 +332 @@
 
   /* 
-   the mirror to use is i_mirror (calculated several lines above)
+   the mirror to use is i_mirror (calculated above)
    check whether the photon is outside the nearest (this) mirror
   */