Visible core spectroscopy at <b>Wendelstein 7-X</b>-Reference-Cited by-同舟云学术

Visible core spectroscopy at Wendelstein 7-X

Published:2024-08-01 Issue:8 Volume:95 Page:
ISSN:0034-6748
Container-title:Review of Scientific Instruments
language:en
Short-container-title:

Author:

Ford O. P.¹^ORCID,Langenberg A.¹^ORCID,Romba T.¹^ORCID,Pölöskei P.¹^ORCID,Zanini M.¹,Bannmann S.¹^ORCID,Gonda T.²^ORCID,Ida K.³^ORCID,Lopez Cansino R.⁴^ORCID,Pablant N.⁵^ORCID,de la Riva Villen J.⁶^ORCID,Swee C.⁷^ORCID,Yoshinuma M.³^ORCID,Alonso A.⁶^ORCID,Geiger B.⁷^ORCID,Perseo V.¹^ORCID,Viezzer E.⁴,

Affiliation:

1. Max-Planck Institut für Plasmaphysik 1 , 17491 Greifswald, Germany

2. Auburn University 2 , Auburn, Alabama 36849, USA

3. National Institute for Fusion Science 3 , Toki 509-5292, Japan

4. Department of Atomic, Molecular, and Nuclear Physics, University Seville 4 , Seville, Spain

5. Princeton Plasma Physics Laboratory 5 , Princeton, New Jersey 08543, USA

6. Laboratorio Nacional de Fusión, CIEMAT 6 , Av. Complutense 40, 28040 Madrid, Spain

7. Department of Engineering Physics, University Wisconsin-Madison 7 , Madison, Wisconsin 53706, USA

Abstract

This paper presents an overview of recent hardware extensions and data analysis developments to the Wendelstein 7-X visible core spectroscopy systems. These include upgrades to prepare the in-vessel components for long-pulse operation, nine additional spectrometers, a new line of sight array for passive spectroscopy, and a coherence imaging charge exchange spectroscopy diagnostic. Progress in data analysis includes ion temperatures and densities from multiple impurity species, a statistical comparison with x-ray crystal spectrometer measurements, neutral density measurements from thermal passive Balmer-alpha emission, and a Bayesian analysis of active hydrogen emission, which is able to infer electron density and main ion temperature profiles.

Funder

EUROfusion

Publisher

AIP Publishing

Link

https://pubs.aip.org/aip/rsi/article-pdf/doi/10.1063/5.0219469/20109109/083526_1_5.0219469.pdf

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1. 2D core ion temperature and impurity density measurements with Coherence Imaging Charge Exchange Recombination Spectroscopy (CICERS) at Wendelstein 7-X (invited);Review of Scientific Instruments;2024-08-01