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Title: A technique for extending by ~103 the dynamic range of compact proton spectrometers for diagnosing ICF implosions on the National Ignition Facility and OMEGA

Journal Article · · Review of Scientific Instruments
DOI:https://doi.org/10.1063/1.4892439· OSTI ID:1155034

Wedge Range Filter (WRF) proton spectrometers are routinely used on OMEGA and the NIF for diagnosing ρR and ρR asymmetries in direct- and indirect-drive implosions of D3He-, D2-, and DT-gasfilled capsules. By measuring the optical opacity distribution in CR-39 due to proton tracks in highyield applications, as opposed to counting individual tracks,WRF dynamic range can be extended by 102 for obtaining the spectral shape, and by 103 for mean energy (ρR) measurement, corresponding to proton fluences of 108 and 109 cm-2, respectively. Using this new technique, ρR asymmetries can be measured during both shock and compression burn (proton yield ~108 and ~1012, respectively) in 2-shock National Ignition Facility implosions with the standard WRF accuracy of ±~10 mg/cm2

Research Organization:
Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States). Plasma Science and Fusion Center
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
NA0001857; NA0002035; FG52-09NA29553; NA0000877; FC52-08NA28752
OSTI ID:
1155034
Journal Information:
Review of Scientific Instruments, Vol. 85, Issue 11; Conference: 20. Topical Conference on High-Temperature Plasma Diagnostics,, Atlanta, GA (United States), Jun 2014; ISSN 0034-6748
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 4 works
Citation information provided by
Web of Science

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