The phase-2 particle x-ray temporal diagnostic for simultaneous measurement of multiple x-ray and nuclear emission histories from OMEGA implosions (invited)
Name
5.0101648.pdf
Description
Published version
Size
7.16 MB
Format
Adobe PDF
Checksum (MD5)
8a2ab168209da02bc91143acce2e8a7a
Author(s)
Kabadi, N
Adrian, P
Stoeckl, C
Sorce, A
Sio, HW
Bedzyk, M
Evans, T
Ivancic, S
Katz, J
Knauer, J
Date Issued
October 1, 2022
Journal
Review of Scientific Instruments
Publisher
AIP Publishing
Citation
Kabadi, N, Adrian, P, Stoeckl, C, Sorce, A, Sio, HW et al. 2022. "The phase-2 particle x-ray temporal diagnostic for simultaneous measurement of multiple x-ray and nuclear emission histories from OMEGA implosions (invited)." Review of Scientific Instruments, 93 (10).
Version
Final published version
Abstract
Electron-temperature (T e) measurements in implosions provide valuable diagnostic information, as T e is negligibly affected by residual flows and other non-thermal effects unlike ion-temperature inferred from a fusion product spectrum. In OMEGA cryogenic implosions, measurement of T e(t) can be used to investigate effects related to time-resolved hot-spot energy balance. The newly implemented phase-2 Particle X-ray Temporal Diagnostic (PXTD) utilizes four fast-rise (∼15 ps) scintillator-channels with distinct x-ray filtering. Titanium and stepped aluminum filtering were chosen to maximize detector sensitivity in the 10–20 keV range, as it has been shown that these x rays have similar density and temperature weighting to the emitted deuterium–tritium fusion neutrons (DTn) from OMEGA Cryo-DT implosions. High quality data have been collected from warm implosions at OMEGA. These data have been used to infer spatially integrated T e(t) with <10% uncertainty at peak emission. Nuclear and x-ray emission histories are measured with 10 ps relative timing uncertainty for x rays and DTn and 12 ps for x rays and deuterium-[Formula: see text] protons (D3Hep). A future upgrade to the system will enable spatially integrated T e(t) with 40 ps time-resolution from cryogenic DT implosions.
MIT Department
Massachusetts Institute of Technology. Plasma Science and Fusion Center
Terms of Use
Creative Commons Attribution 4.0 International license
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DOI of Published Version
https://doi.org/10.1063/5.0101648
