Fusion-neutron measurements for magnetized liner inertial fusion experiments on the Z accelerator

9th International Conference on Inertial Fusion Sciences and Applications

Hahn, K.D.^1 ; Chandler, G.A.^1 ; Ruiz, C.L.^1 ; Cooper, G.W.^2 ; Gomez, M.R.^1 ; Slutz, S.^1 ; Sefkow, A.B.^1 ; Sinars, D.B.^1 ; Hansen, S.B.^1 ; Knapp, P.F.^1 ; Schmit, P.F.^1 ; Harding, E.^1 ; Jennings, C.A.^1 ; Awe, T.J.^1 ; Geissel, M.^1 ; Rovang, D.C.^1 ; Torres, J.A.^1 ; Bur, J.A.^1 ; Cuneo, M.E.^1 ; Glebov, V Yu^3 ; Harvey-Thompson, A.J.^1 ; Herrman, M.C.^1 ; Hess, M.H.^1 ; Johns, O.^1 ; Jones, B.^1 ; Lamppa, D.C.^1 ; Lash, J.S.^1 ; Martin, M.R.^1 ; McBride, R.D.^1 ; Peterson, K.J.^1 ; Porter, J.L.^1 ; Reneker, J.^1 ; Robertson, G.K.^1 ; Rochau, G.A.^1 ; Savage, M.E.^1 ; Smith, I.C.^1 ; Styron, J.D.^2 ; Vesey, R.A.^1

Sandia National Laboratories, Albuquerque

NM, United States^1

University of New Mexico, Dept. of Nuclear Engineering, Albuquerque

NM, United States^2

University of Rochester, Laboratory of Laser Energetics, Rochestor

NY, United States^3

关键词: Fusion neutron measurements;    Inertial fusion;    Neutron diagnostic;    Neutron production;    Neutron time of flight;    Sandia National Laboratories;    Scattered neutron;    Spectral measurement;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/717/1/012020/pdf
DOI  :  10.1088/1742-6596/717/1/012020

来源: IOP

【 摘 要 】

Several magnetized liner inertial fusion (MagLIF) experiments have been conducted on the Z accelerator at Sandia National Laboratories since late 2013. Measurements of the primary DD (2.45 MeV) neutrons for these experiments suggest that the neutron production is thermonuclear. Primary DD yields up to 3e12 with ion temperatures ∼2-3 keV have been achieved. Measurements of the secondary DT (14 MeV) neutrons indicate that the fuel is significantly magnetized. Measurements of down-scattered neutrons from the beryllium liner suggest ρRliner∼1g/cm2. Neutron bang times, estimated from neutron time-of-flight (nTOF) measurements, coincide with peak x-ray production. Plans to improve and expand the Z neutron diagnostic suite include neutron burn-history diagnostics, increased sensitivity and higher precision nTOF detectors, and neutron recoil-based yield and spectral measurements.