Magnifying lens for 800 MeV proton radiography

F. E. Merrill; E. Campos; C. Espinoza; G. Hogan; B. Hollander; J. Lopez; F. G. Mariam; D. Morley; C. L. Morris; M. Murray; A. Saunders; C. Schwartz; T. N. Thompson

doi:10.1063/1.3652974

Magnifying lens for 800 MeV proton radiography

F. E. Merrill, E. Campos, C. Espinoza, G. Hogan, B. Hollander, J. Lopez, F. G. Mariam, D. Morley, C. L. Morris, M. Murray, A. Saunders, C. Schwartz, T. N. Thompson

Research output: Contribution to journal › Article › peer-review

43 Scopus citations

Abstract

This article describes the design and performance of a magnifying magnetic-lens system designed, built, and commissioned at the Los Alamos National Laboratory (LANL) for 800 MeV flash proton radiography. The technique of flash proton radiography has been developed at LANL to study material properties under dynamic loading conditions through the analysis of time sequences of proton radiographs. The requirements of this growing experimental program have resulted in the need for improvements in spatial radiographic resolution. To meet these needs, a new magnetic lens system, consisting of four permanent magnet quadrupoles, has been developed. This new lens system was designed to reduce the second order chromatic aberrations, the dominant source of image blur in 800 MeV proton radiography, as well as magnifying the image to reduce the blur contribution from the detector and camera systems. The recently commissioned lens system performed as designed, providing nearly a factor of three improvement in radiographic resolution.

Original language	English
Article number	103709
Journal	Review of Scientific Instruments
Volume	82
Issue number	10
DOIs	https://doi.org/10.1063/1.3652974
State	Published - Oct 2011
Externally published	Yes

Funding

The authors would like to acknowledge the support to the proton radiography effort by the LANSCE staff, especially the accelerator operators and radiation control technicians, whose dedication ensures the productivity of the proton radiography project and LANSCE. LANL is operated by LANS, LLC, under DOE/NNSA Contract No. DE-AC52-06NA25396.

Funders	Funder number
U.S. Department of Energy
National Nuclear Security Administration	DE-AC52-06NA25396

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abstract = "This article describes the design and performance of a magnifying magnetic-lens system designed, built, and commissioned at the Los Alamos National Laboratory (LANL) for 800 MeV flash proton radiography. The technique of flash proton radiography has been developed at LANL to study material properties under dynamic loading conditions through the analysis of time sequences of proton radiographs. The requirements of this growing experimental program have resulted in the need for improvements in spatial radiographic resolution. To meet these needs, a new magnetic lens system, consisting of four permanent magnet quadrupoles, has been developed. This new lens system was designed to reduce the second order chromatic aberrations, the dominant source of image blur in 800 MeV proton radiography, as well as magnifying the image to reduce the blur contribution from the detector and camera systems. The recently commissioned lens system performed as designed, providing nearly a factor of three improvement in radiographic resolution.",

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AU - Merrill, F. E.

AU - Campos, E.

AU - Espinoza, C.

AU - Hogan, G.

AU - Hollander, B.

AU - Lopez, J.

AU - Mariam, F. G.

AU - Morley, D.

AU - Morris, C. L.

AU - Murray, M.

AU - Saunders, A.

AU - Schwartz, C.

AU - Thompson, T. N.

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Magnifying lens for 800 MeV proton radiography

Abstract

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