A comparison of four reconstruction methods for JET neutron and gamma tomography

被引：56
作者：
Craciunescu, T. [1 ]
Bonheure, G. [2 ]
Kiptily, V. [3 ]
Murari, A. [4 ]
Tiseanu, I. [1 ]
Zoita, V. [1 ]
Contributors, JET-EFDA [5 ]
机构：
[1] EURATOM MEdC Assoc, Natl Inst Laser Plasma & Radiat Phys, Bucharest, Romania
[2] Euratom Belgian State Assoc LPP ERM KMS, TEC, B-1000 Brussels, Belgium
[3] EURATOM UKAEA Assoc, Culham Sci Ctr, Abingdon, Oxon, England
[4] Assoc ENEA Euratom Fus, Consorzio RFX, Padua, Italy
[5] JET EFDA Culham Sci Ctr, Abingdon OX14 3DB, Oxon, England
来源：
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2009年 / 605卷 / 03期
基金：
英国工程与自然科学研究理事会;
关键词：
Tomography; Tokamak neutron and gamma plasma; diagnostics; X-RAY TOMOGRAPHY; MAXIMUM-LIKELIHOOD; TRITIUM; REGULARIZATION; TRANSPORT; PROFILES; EMISSION; IONS;
D O I：
10.1016/j.nima.2009.03.224
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
The JET neutron profile monitor coverage of the neutron/gamma emissive region enables tomographic reconstruction. However, due to the availability of only two projection angles and to the coarse sampling, tomography is a highly limited data set problem. A comparative study concerning the applicability to JET tomography of four methods-maximum likelihood, maximum entropy, Tikhonov regularization and a Monte Carlo back-projection algorithm-is reported. The methods have been tested on numerically simulated phantoms with shapes characteristic for this kind of tomography. The retrieval of sophisticated structures in the emissive distribution has been addressed in order to have a complete image of the quality and reliability of the methods. A both qualitative and quantitative evaluation is reported. (C) 2009 Craciunescu. Published by Elsevier B.V. All rights reserved.
引用
收藏
页码：374 / 383
页数：10
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