A technique for extending by ~103 the dynamic range of compact proton spectrometers for diagnosing ICF implosions on the National Ignition Facility and OMEGA
- Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States). Plasma Science and Fusion Center
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
Web of Science
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