Skip to main content
OSTI.GOVU.S. Department of Energy Office of Scientific and Technical Information
U.S. Department of Energy
Office of Scientific and Technical Information
 

A profile monitor for proton radiography experiments at the Los Alamos Neutron Science Center

Journal Article · · Review of Scientific Instruments
DOI:https://doi.org/10.1063/5.0251430· OSTI ID:2575596
 [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1] more »;  [1];  [1];  [1];  [1] « less
  1. Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
+ Show Author Affiliations
The Proton Radiography (pRad) facility at the Los Alamos Neutron Science Center utilizes pulses of protons delivered by the 800 MeV linear accelerator to produce a series of radiographic images to study the dynamic behavior of materials under extreme conditions. Radiographs taken with an empty field of view, or beam pictures, are used to normalize transmission. However, because the center of the proton beam shifts between pulses, an in situ method for measuring beam position is required to normalize images for beam movement to perform absolute radiography. The beam profile monitor described here uses an array of scintillating fibers positioned in the beam path to produce light proportional to beam intensity across the beam cross section. This light is detected using fast photodiodes and a digital oscilloscope, providing a response time of several nanoseconds—suitable for measuring the 50-ns proton pulses used in pRad. The profile monitor achieves a measured position precision of 40 μm and an intensity precision of 0.7%, allowing for beam movement corrections to be applied to images, thereby improving data accuracy and image quality.
Research Organization:
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA), Office of Defense Programs (DP)
Grant/Contract Number:
89233218CNA000001
OSTI ID:
2575596
Report Number(s):
LA-UR--24-32378; 1089-7623; 10.1063/5.0251430
Journal Information:
Review of Scientific Instruments, Journal Name: Review of Scientific Instruments Journal Issue: 5 Vol. 96; ISSN 1089-7623; ISSN 0034-6748
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English

References (13)

History of proton radiography and tomography journal February 2022
An 800-MeV proton radiography facility for dynamic experiments
  • King, N. S. P.; Ables, E.; Adams, Ken
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 424, Issue 1 https://doi.org/10.1016/s0168-9002(98)01241-8
journal November 1999
Unstable Richtmyer–Meshkov growth of solid and liquid metals in vacuum journal June 2012
A Survey of High Explosive-Induced Damage and Spall in Selected Metals Using Proton Radiography conference January 2004
Proton Radiography Experiments on Shocked High Explosive Products conference January 2004
Flash radiography with 24 GeV/ c protons journal May 2011
Burn front and reflected shock wave visualization in an inertially confined detonation of high explosive
  • Terrones, Guillermo; Burkett, Michael W.; Morris, Christopher L.
  • SHOCK COMPRESSION OF CONDENSED MATTER - 2011: Proceedings of the Conference of the American Physical Society Topical Group on Shock Compression of Condensed Matter, AIP Conference Proceedings https://doi.org/10.1063/1.3686263
conference January 2012
The evolution of solid density within a thermal explosion II. Dynamic proton radiography of cracking and solid consumption by burning journal May 2012
Experimental observations of exploding bridgewire detonator function journal December 2020
Charged particle radiography journal March 2013
Molière's Theory of Multiple Scattering journal March 1953
Magnetic optics for proton radiography conference January 1998
Hybrid image sensor with multiple on-chip frame storage for ultrahigh-speed imaging conference March 2005

Similar Records

Proton Radiography at Los Alamos
Technical Report · Mon Feb 27 23:00:00 EST 2017 · OSTI ID:1345179
Dark Field Proton Radiography (Los Alamos LDRD Report)
Technical Report · Wed Mar 08 23:00:00 EST 2023 · OSTI ID:1961360
Los Alamos real-time and digital radiography plans
Conference · Fri Dec 31 23:00:00 EST 1982 · OSTI ID:5410775

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
proton radiography profile monitor LANSCE