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Realizing Neutron Vision a compact digital camera for radiography

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Control energy resolution. Translating MACS Monochromator ... dynamic range. High sensitivity for reflection images. Lower sensitivity for direct beam image ... – PowerPoint PPT presentation

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Title: Realizing Neutron Vision a compact digital camera for radiography


1
Realizing Neutron Vision- a compact digital
camera for radiography
Collin Broholm Johns Hopkins University and NIST
Center for Neutron Research
  • What is neutron scattering?
  • Why do we need neutron vision
  • Preliminary specifications for neutron camera

2
NIST Center for Neutron Research, MD
3
The Spallation Neutron Source, TN
4
Neutron Scattering
5
SPINS Cold neutron triple axis spectrometer at
NCNR
6
Overview of MACS
Design by T. D. Pike and C. Brocker
7
Co-aligned single crystals into large cryostats
1 inch
8
Uses for neutron camera - transmission
Neutron Camera
Collimated Neutron beam
Shadow Images used to center sample in beam
9
Uses for Neutron Camera - Reflection
Collimated Neutron beam
Neutron Camera
Reflection Images used to see if sample is intact
10
The Camera we use now
11
Neutron Camera of our dreams
  • Instant computer access to neutron images
  • High dynamic range
  • High sensitivity for reflection images
  • Lower sensitivity for direct beam image
  • Robust industrial strength design
  • Rapid and easy to activate from shelf
  • Parts in beam must not activate or be damaged
  • Thickness along beam minimized ( 5 cm)
  • Specified resolution of order 0.5 mm
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