Import Geant4 5.2.0 source tree

examples/advanced/Tiara/source/py_modules/detector.py

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+# $Id: detector.py,v 1.2 2003/06/16 17:06:44 dressel Exp $
+# -------------------------------------------------------------------
+# GEANT4 tag $Name: geant4-05-02 $
+# -------------------------------------------------------------------
+#
+
+# A detector is either the of the "simple" or "ring" type.
+# the volumina of the "simple" detectors are the same at all
+# positions (00, 20, 40 cm off beam axis). The "ring" type detectors
+# have different volumina at the different positions.
+# For convinience a class Detector is provided to link a detector
+# position and it's volume.
+
+d00Volume = 1608.8   # volume of the 12.9 cm x 12.9 cm cyinder
+d20Volume = 20268.3  # volume of the ring at 20 cm
+d40Volume = 40536.6  # volume of the ring at 40 cm
+
+# map of distances to volumina for the 12.9 cm x 12.9 cm detectors
+SimpleDetectorVolume = {"00":d00Volume, "20":d00Volume, "40":d00Volume}
+# map of distances to volumina for ring detectors
+RingDetectorVolume = {"00":d00Volume, "20":d20Volume, "40":d40Volume}
+
+# map of detector type to distance-volumina map
+DetectorVolume = {"simple":SimpleDetectorVolume,
+                  "ring"  :RingDetectorVolume}
+
+class Detector(object):
+    "Distance and volume of a Detector."
+    def __init__(self, dist, detType):
+        self.name = dist
+        self.volume = DetectorVolume[detType][dist]
+
+
+
+
+
+# function to calculate the scale factor
+
+def detScale(ngen, energy, coli):
+    """Detrmine scale.
+
+    Determine scale according to the number of generated neutrons,
+    the proton beam energy. If coli == 1, the flux at the
+    colimator exit is used, else the flux at 401 cm is used.
+    """
+    Asrc = 93.31
+    Fexp = 0
+    if energy == "43":
+        if coli == 1:
+            Fexp = 1.76E+04
+        else:
+            Fexp = 1.94E+04
+    else:
+        if energy == "68":
+            if coli == 1:
+                Fexp = 2.04E+04
+            else:
+                Fexp = 2.46E+04
+
+    S = Fexp * Asrc / ngen
+
+    return S
+
+