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A magnetic particle time-of-flight (MagPTOF) diagnostic for measurements of shock- and compression-bang time at the NIF (invited)

2014; American Institute of Physics; Volume: 85; Issue: 11 Linguagem: Inglês

10.1063/1.4886775

1527-2400

H. G. Rinderknecht, H. Sio, J. A. Frenje, J. Magoon, A. Agliata, M. J. Shoup, S. Ayers, C. G. Bailey, M. Gatu Johnson, A. B. Zylstra, N. Sinenian, M. J. Rosenberg, C. K. Li, F. H. Séguin, R. D. Petrasso, J. R. Rygg, J. Kimbrough, A. J. Mackinnon, P. M. Bell, R. M. Bionta, T. Clancy, R. Zacharias, A. House, T. Döppner, H. S. Park, S. Le Pape, O. L. Landen, N. B. Meezan, H. F. Robey, V. U. Glebov, M. Hohenberger, C. Stöeckl, T. C. Sangster, C. Li, J. Parat, Richard E. Olson, J. L. Kline, J. D. Kilkenny,

Magnetic confinement fusion research

A magnetic particle time-of-flight (MagPTOF) diagnostic has been designed to measure shock- and compression-bang time using D3He-fusion protons and DD-fusion neutrons, respectively, at the National Ignition Facility (NIF). This capability, in combination with shock-burn weighted areal density measurements, will significantly constrain the modeling of the implosion dynamics. This design is an upgrade to the existing particle time-of-flight (pTOF) diagnostic, which records bang times using DD or DT neutrons with an accuracy better than ±70 ps [H. G. Rinderknecht et al., Rev. Sci. Instrum. 83, 10D902 (2012)]. The inclusion of a deflecting magnet will increase D3He-proton signal-to-background by a factor of 1000, allowing for the first time simultaneous measurements of shock- and compression-bang times in D3He-filled surrogate implosions at the NIF.