TY - JOUR
T1 - Fast algorithm for tomographic reconstruction for plasma emission
AU - Yamasaki, Kotaro
AU - Fujisawa, Akihide
AU - Nagashima, Yoshihiko
AU - Inagaki, Shigeru
PY - 2017
Y1 - 2017
N2 - Temporal evolution of two dimensional image of plasma emission has been obtained using a reconstruction algorithm called Maximum Likelihood-Expectation Maximization (MLEM), with a tomography system in a linear cylindrical plasma. The calculation of tomography images for the whole plasma duration needs parallel computation due to the iteration processes of MLEM. However, faster and simpler tomography algorithm giving a consistent image with MLEM should be desirable for monitoring the emission profile and quick analysis between shots. This paper proposes such a new algorithm of a modified Tikhonov regularization with introducing a weight matrix, termed here direct matrix reconstruction (DMR).
AB - Temporal evolution of two dimensional image of plasma emission has been obtained using a reconstruction algorithm called Maximum Likelihood-Expectation Maximization (MLEM), with a tomography system in a linear cylindrical plasma. The calculation of tomography images for the whole plasma duration needs parallel computation due to the iteration processes of MLEM. However, faster and simpler tomography algorithm giving a consistent image with MLEM should be desirable for monitoring the emission profile and quick analysis between shots. This paper proposes such a new algorithm of a modified Tikhonov regularization with introducing a weight matrix, termed here direct matrix reconstruction (DMR).
UR - http://www.scopus.com/inward/record.url?scp=85049522285&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85049522285&partnerID=8YFLogxK
U2 - 10.1585/pfr.12.1201045
DO - 10.1585/pfr.12.1201045
M3 - Article
AN - SCOPUS:85049522285
VL - 12
JO - Plasma and Fusion Research
JF - Plasma and Fusion Research
SN - 1880-6821
M1 - 1201045
ER -