Implementation of Vertical Neutron Camera (VNC) for ITER Fusion Plasma Neutron Source Profile Reconstruction

Authors: V. Amosov, Yu. Kashchuk, A. Krasilnikov, A. Kostin, A. Khovanskiy, A. Leonov, N. Rodionov, R. Rodionov

Abstract:

In present work the problem of the ITER fusion plasma neutron source parameter reconstruction using only the Vertical Neutron Camera data was solved. The possibility of neutron source parameter reconstruction was estimated by the numerical simulations and the analysis of adequateness of mathematic model was performed. The neutron source was specified in a parametric form. The numerical analysis of solution stability with respect to data distortion was done. The influence of the data errors on the reconstructed parameters is shown: • is reconstructed with errors less than 4% at all examined values of δ (until 60%); • is determined with errors less than 10% when δ do not overcome 5%; • is reconstructed with relative error more than 10 %; • integral intensity of the neutron source is determined with error 10% while δ error is less than 15%; where -error of signal measurements, (R0,Z0), the plasma center position,- /parameter of neutron source profile.

Keywords: ITER, neutronsource, neutron source profile reconstruction, Vertical Neutron Camera.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1087293

References:

[1] A. Tikhonov, V. Arsenin, A. Timonov,“Mathematical problems of computer tomography”, Moscow, Nauka, 1987.
[2] F. Natterer,“The Mathematics of Computerized Tomography”, Moscow, Mir, 1990.
[3] G. Fedorov, S. Tereschenko,“Computed emission tomography”, Moscow, Energoatomizdat, 1990.
[4] V. Pickalov, T. Melnikova,“Tomography of the plasma”, Moscow, Nauka, 1995.
[5] A. Kak and Malcolm Slaney, “Principles of Computerized Tomographic Imaging”, Society of Industrial and Applied Mathematics, 2001.
[6] F. Natterer and F. Wübbeling, “Mathematical Methods in Image Reconstruction”, Monographs on Mathematical Modeling and Computation, vol. 5, SIAM, Philadelphia, PA 2001.
[7] S. Tereschenko,“Methods of computed tomography”, Moscow, Fizmatlit, 2004.
[8] A. Tikhonov, A. Leonov, A. Yagola,“Nonlinear ill-posed problems”, Moscow, Nauka, p. 312, 1995.