High order magnetic optics for high dynamic range proton radiography at a kinetic energy 800 MeV

Journal Article · 13 January 2016 · Review of Scientific Instruments

DOI: https://doi.org/10.1063/1.4939822 · OSTI ID:1296662

Sjue, Sky K. L. ^[1]; Morris, Christopher L. ^[1]; Merrill, Frank Edward ^[1]; Mariam, Fesseha Gebre ^[1]; Saunders, Alexander ^[1]

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1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

Flash radiography with 800 MeV kinetic energy protons at Los Alamos National Laboratory is an important experimental tool for investigations of dynamic material behavior driven by high explosives or pulsed power. The extraction of quantitative information about density fields in a dynamic experiment from proton generated images requires a high fidelity model of the protonimaging process. It is shown that accurate calculations of the transmission through the magnetic lens system require terms beyond second order for protons far from the tune energy. The approach used integrates the correlated multiple Coulomb scattering distribution simultaneously over the collimator and the image plane. Furthermore, comparison with a series of static calibrationimages demonstrates the model’s accurate reproduction of both the transmission and blur over a wide range of tune energies in an inverse identity lens that consists of four quadrupole electromagnets.

• Research Organization: Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
• Sponsoring Organization: USDOE
• Grant/Contract Number: AC52-06NA25396
• OSTI ID: 1296662
• Report Number(s): LA-UR-15-23970
• Journal Information: Review of Scientific Instruments, Journal Name: Review of Scientific Instruments Journal Issue: 1 Vol. 87; ISSN 0034-6748
• Publisher: American Institute of Physics (AIP)Copyright Statement
• Country of Publication: United States
• Language: English