Ultra-fast single-crystal CVD diamonds in the particle time-of-flight (PTOF) detector for low yield burn-history measurements on the NIF (invited)
Name
013501_1_5.0219374.pdf
Description
Published version
Size
5.02 MB
Format
Adobe PDF
Checksum (MD5)
16d0a898d9fe1e72caf4b13a98d35088
Date Issued
January 6, 2025
Journal
Review of Scientific Instruments
Publisher
AIP Publishing
Citation
B. L. Reichelt, R. Kishimori, Y. Lawrence, C. W. Wink, M. Gatu Johnson, T. M. Johnson, P. J. Adrian, K. L. Baker, D. T. Casey, D. S. Clark, S. G. Dannhoff, M. J. Eckart, T. E. Evans, H. Geppert-Kleinrath, D. Gibson, K. D. Hahn, D. P. Higginson, N. Izumi, N. V. Kabadi, S. Kerr, J. H. Kunimune, O. L. Landen, E. Mariscal, R. A. Marsh, D. Martinez, K. D. Meaney, J. A. Pearcy, R. D. Petrasso, M. S. Rubery, D. R. Rusby, L. Russell, D. J. Schlossberg, V. A. Smalyuk, R. Tommasini, J. A. Frenje, C. K. Li; Ultra-fast single-crystal CVD diamonds in the particle time-of-flight (PTOF) detector for low yield burn-history measurements on the NIF (invited). Rev. Sci. Instrum. 1 January 2025; 96 (1): 013501.
Version
Final published version
Abstract
The Particle Time of Flight (PTOF) diagnostic is a chemical vapor deposition diamond-based detector and is the only diagnostic for measuring nuclear bang times of low yield (<1013) shots on the National Ignition Facility. Recently, a comprehensive study of detector impulse responses revealed certain detectors with very fast and consistent impulse responses with a rise time of <50 ps, enabling low yield burn history measurements. At the current standoff of 50 cm, this measurement is possible with fast 14 MeV neutrons from deuterium–tritium (DT) fusion plasmas. PTOF-inferred DT burn width numbers compare well with widths inferred from the gamma reaction history diagnostic on midyield (1013–1015) shots, where both systems are capable of making this measurement. These new capabilities could be extended to 2.5 MeV deuterium–deuterium neutrons from D plasmas and to even lower yield by reducing the detector standoff distance to 10 cm; a design for this is also presented.
MIT Department
Massachusetts Institute of Technology. Plasma Science and Fusion Center
Terms of Use
Creative Commons Attribution
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1063/5.0219374
