Soft X-ray tomographic reconstruction of JET ILW plasmas with tungsten impurity and different spectral response of detectors

被引：6
|
作者：
Mlynar, Jan [1 ]
Tomes, Matej [1 ,2 ]
Imrisek, Martin [1 ,2 ]
Alper, Barry [3 ]
O'Mullane, Martin [3 ]
Odstrcil, Tomas [4 ]
Puetterich, Thomas [4 ]
机构：
[1] Inst Plasma Phys AS CR, CZ-18200 Prague 8, Czech Republic
[2] Charles Univ Prague, FMP, CZ-18000 Prague 8, Czech Republic
[3] Culham Ctr Fus Energy, Abingdon OX14 3DB, Oxon, England
[4] Max Planck Inst Plasma Phys, D-85748 Garching, Germany
来源：
FUSION ENGINEERING AND DESIGN | 2015年 / 96-97卷
关键词：
Tokamak; Plasma diagnostics; Tomography; Soft X-ray; Tungsten radiation;
D O I：
10.1016/j.fusengdes.2015.04.055
中图分类号：
TL [原子能技术]; O571 [原子核物理学];
学科分类号：
0827 ; 082701 ;
摘要：
The Joint European Torus (JET) presently operates with the ITER-like wall (ILW) including tungsten divertor. Analyses of the soft X-ray radiation (SXR) data present an important tool for studies of transport of tungsten into JET plasmas. SXR spatial distribution can be measured by horizontal (H) and two vertical (V,T) pinhole cameras. Tomographic reconstruction of SXR emissivity from their data is challenging due to different spectral sensitivities of the cameras which can cause significant inconsistencies due to spectral properties of tungsten radiation. In this contribution an advanced correction based on evaluation of the sensitivity differences for individual lines of view of the SXR detectors is presented. The adjustments take into account atomic data of tungsten as well as the SXR intensity perturbation due to tungsten influx. First results are presented and discussed. (c) 2015 EURATOM. Published by Elsevier B.V. All rights reserved.
引用
收藏
页码：869 / 872
页数：4
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