Neutron pinball - Revision history

Burgjeff at 09:59, 27 May 2016

2016-05-27T09:59:40Z

2016-05-27T09:59:19Z

2016-02-15T05:15:45Z

Octagonal target placement

2016-02-12T08:46:42Z

Octagonal target placement

2016-02-12T08:35:42Z

2016-02-12T08:34:41Z

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2016-02-12T08:30:17Z

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2016-02-12T08:30:04Z

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2016-02-12T08:29:27Z

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2016-02-12T08:25:10Z

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← Older revision		Revision as of 09:59, 27 May 2016
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−	~~Go back [[~~Go back [[Elastic scattering in Th target]]	+	Go back [[Elastic scattering in Th target]]

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 ==The Simulation==
 Photons with a Bremsstrahlung energy distribution are incident upon 64 thorium cylindrical targets. All thorium targets have 1 cm center-to-center spacing, a dia. of 0.4 cm, and a height of 8 cm. The target geometry is shown in the neutron flux plot below. The targets are surrounded by a cylindrical room filled with air, which has a radius equal to the distance between the target and the detectors (150 cm), and a height equal to the vertical extent of the detectors (76 cm). Upon the creation of a neutron from photofission, its initial direction of travel is logged. Once the neutron exits the cylindrical room, its direction of travel as seen by a detector placed room's edge, is compared to it's initial direction of travel,  giving a neutron deflection angle.
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 (B) A top down view of the geometry, to scale. (C) A close up reveals how this geometry provides an unobstructed line of sight from every target, to the entire face of every detector. ]]
-Go back [[Elastic scattering]]
+Go back [[Elastic scattering in Th target]]

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 ==Octagonal target placement ==
-The geometry shown below provides an unobstructed line of sight from every target, to the entire face of every detector. The cylindrical targets have a diameter of 2 mm.  When using thorium as the target material, 3.2% of neutrons were deflected from within the cylinders.
+The geometry shown below provides an unobstructed line of sight from every target, to the entire face of every detector. The cylindrical targets have a diameter of 2 mm. A target is placed at each of the eight vertices of an octagon with a radius of 1.5 cm, along with a target at the center. When using thorium as the target material, 3.2% of neutrons were deflected from within the cylinders.
 [[File:TargetGeom.png|caption|thumb|center|1050px|(A) The grey regions represent the line of sight from each target to the entire face of each detector.
 (B) A top down view of the geometry, to scale. (C) A close up reveals how this geometry provides an unobstructed line of sight from every target, to the entire face of every detector. ]]
 Go back [[Elastic scattering]]

@@ Line 16: / Line 16: @@
 ==Octagonal target placement ==
-The geometry shown below provides an unobstructed line of sight from every target, to the entire face of every detector. The cylindrical targets have a diameter of 2 mm.  When using thorium as the target material, 3.2% of neutrons were deflected.
+The geometry shown below provides an unobstructed line of sight from every target, to the entire face of every detector. The cylindrical targets have a diameter of 2 mm.  When using thorium as the target material, 3.2% of neutrons were deflected from within the cylinders.
 [[File:TargetGeom.png|caption|thumb|center|1050px|(A) The grey regions represent the line of sight from each target to the entire face of each detector.
 (B) A top down view of the geometry, to scale. (C) A close up reveals how this geometry provides an unobstructed line of sight from every target, to the entire face of every detector. ]]
 Go back [[Elastic scattering]]

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 [[File:AirDeflection.png|700 px|thumb|center|Non-zero deflection angles of neutrons by air]]
-====
+==Octagonal target placement ==
 The geometry shown below provides an unobstructed line of sight from every target, to the entire face of every detector. The cylindrical targets have a diameter of 2 mm.  When using thorium as the target material, 3.2% of neutrons were deflected.
 [[File:TargetGeom.png|caption|thumb|center|1050px|(A) The grey regions represent the line of sight from each target to the entire face of each detector.

@@ Line 18: / Line 18: @@
 The geometry shown below provides an unobstructed line of sight from every target, to the entire face of every detector. The cylindrical targets have a diameter of 2 mm.  When using thorium as the target material, 3% of neutrons were deflected.
 [[File:TargetGeom.png|caption|thumb|center|1050px|(A) The grey regions represent the line of sight from each target to the entire face of each detector.
-(B) Neutron line of sight from all targets to all detectors. (C) A close up reveals how this geometry provides an unobstructed line of sight from every target, to the entire face of every detector. ]]
+(B)To scale, top down view of the geometry (C) A close up reveals how this geometry provides an unobstructed line of sight from every target, to the entire face of every detector. ]]
 Go back [[Elastic scattering]]