A Dual Channel X-ray Spectrometer for Fast Ignition Research

Akli, K U; Patel, P K; Van Maren, R; Stephens, R B; Key, M H; Higginson, D P; Westover, B; Chen, C D; Mackinnon, A J; Bartal, T; Beg, F N; Chawla, S; Fedosejevs, R; Freeman, R R; Hey, D S; Kemp, G E; LePape, S; Link, A; Ma, T; MacPhee, A G; McLean, H S; Ping, Y; Tsui, Y Y; Van Woerkom, L D; Wei, M S; Yabuuchi, T

doi:10.1088/1748-0221/5/07/P07008

Title: A Dual Channel X-ray Spectrometer for Fast Ignition Research

Journal Article · Mon Apr 19 00:00:00 EDT 2010 · Journal of Instrumentation

DOI:https://doi.org/10.1088/1748-0221/5/07/P07008· OSTI ID:992284

Akli, K U; Patel, P K; Van Maren, R; Stephens, R B; Key, M H; Higginson, D P; Westover, B; Chen, C D; Mackinnon, A J; Bartal, T; Beg, F N; Chawla, S; Fedosejevs, R; Freeman, R R; Hey, D S; Kemp, G E; LePape, S; Link, A; Ma, T; MacPhee, A G more »

A new Dual Channel Highly Ordered Pyrolytic Graphite (DC-HOPG) x-ray spectrometer was developed to study laser-generated electron beam transport. The instrument uses a pair of graphite crystals and has the advantage of simultaneously detecting self emission from low-Z materials in first diffraction order and high-Z materials in second order. The emissions from the target are detected using a pair of parallel imaging plates positioned in a such way that the noise from background is minimized and the mosaic focusing is achieved. Initial tests of the diagnostic on Titan laser (I {approx} 10{sup 20} W/cm{sup 2}, {tau} = 0.7 ps) show excellent signal-to-noise ratio (SNR) > 1000 for the low energy channel and SNR > 400 for the high energy channel.

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Research Organization:: Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

Sponsoring Organization:: USDOE

DOE Contract Number:: W-7405-ENG-48

OSTI ID:: 992284

Report Number(s):: LLNL-JRNL-428255; TRN: US1007727

Journal Information:: Journal of Instrumentation, Vol. 5, Issue 7; ISSN 1748-0221

Country of Publication:: United States

Language:: English

References (20)

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71 CLASSICAL AND QUANTUMM MECHANICS
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Title: A Dual Channel X-ray Spectrometer for Fast Ignition Research

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