TY - JOUR
T1 - The maximum likelihood reconstruction method for JET neutron tomography
AU - Craciunescu, T.
AU - Bonheure, G.
AU - Kiptily, V.
AU - Murari, A.
AU - Soare, S.
AU - Tiseanu, I.
AU - Zoita, V.
PY - 2008/10/11
Y1 - 2008/10/11
N2 - The JET neutron profile monitor ensures coverage of the neutron emissive region that enables tomographic reconstruction. However, due to the availability of only two projection angles and to the coarse sampling, tomography is a limited data set problem. A reconstruction method based on the maximum likelihood principle is developed for solving the reconstruction problem. A smoothing operator, defined as median filtering which uses a sliding window moving along magnetic contour lines, is used to compensate for the lack of experimental information. The method is tested on numerically simulated phantoms with shapes characteristic for this kind of tomography. Significant reconstructions of experimental data are reported.
AB - The JET neutron profile monitor ensures coverage of the neutron emissive region that enables tomographic reconstruction. However, due to the availability of only two projection angles and to the coarse sampling, tomography is a limited data set problem. A reconstruction method based on the maximum likelihood principle is developed for solving the reconstruction problem. A smoothing operator, defined as median filtering which uses a sliding window moving along magnetic contour lines, is used to compensate for the lack of experimental information. The method is tested on numerically simulated phantoms with shapes characteristic for this kind of tomography. Significant reconstructions of experimental data are reported.
KW - Maximum likelihood tomography
KW - Tokamak neutron plasma diagnostics
UR - http://www.scopus.com/inward/record.url?scp=52149100098&partnerID=8YFLogxK
U2 - 10.1016/j.nima.2008.07.145
DO - 10.1016/j.nima.2008.07.145
M3 - Article
AN - SCOPUS:52149100098
SN - 0168-9002
VL - 595
SP - 623
EP - 630
JO - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
JF - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
IS - 3
ER -