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Related Experiment Video

Updated: May 17, 2026

Experimental Methods for Spin- and Angle-Resolved Photoemission Spectroscopy Combined with Polarization-Variable Laser

Experimental Methods for Spin- and Angle-Resolved Photoemission Spectroscopy Combined with Polarization-Variable Laser

Published on: June 28, 2018

Perpendicular and tangential angularly resolved multi-sight neutral particle analyzer system in LHD.

T Ozaki¹, E Veshchev, T Ido

¹National Institute for Fusion Science, 322-6, Oroshi, Toki, Gifu 509-5292, Japan. ozaki@nifs.ac.jp

The Review of Scientific Instruments

|November 7, 2012

Summary

This summary is machine-generated.

Particle loss in helical plasma is measured using an angularly resolved multi-sightline neutral particle analyzer (ARMS). This system uses an AXUV detector to analyze energetic neutral particle distribution and investigate plasma confinement.

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Quantification of Hydrogen Concentrations in Surface and Interface Layers and Bulk Materials through Depth Profiling with Nuclear Reaction Analysis

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Last Updated: May 17, 2026

Experimental Methods for Spin- and Angle-Resolved Photoemission Spectroscopy Combined with Polarization-Variable Laser

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Published on: June 28, 2018

Quantification of Hydrogen Concentrations in Surface and Interface Layers and Bulk Materials through Depth Profiling with Nuclear Reaction Analysis

Quantification of Hydrogen Concentrations in Surface and Interface Layers and Bulk Materials through Depth Profiling with Nuclear Reaction Analysis

Published on: March 29, 2016

Area of Science:

Plasma physics
Fusion energy research

Background:

Understanding particle and energy transport is crucial for magnetic confinement fusion.
Helical plasmas present unique challenges for particle confinement due to their complex magnetic field geometry.

Purpose of the Study:

To develop and validate a method for measuring particle loss in helical plasmas.
To investigate the real-time neutral particle distribution and its relation to particle loss.

Main Methods:

Utilizing an angularly resolved multi-sightline neutral particle analyzer (ARMS).
Employing an AXUV detector, typically a UV monitor, as the particle detector within the ARMS.
Operating two ARMS systems with perpendicular and tangential viewing angles.

Main Results:

The ARMS system successfully measures the angular distribution of energetic neutral particles.
Real-time neutral particle distribution data was obtained for helical plasma.
The study provides a method to investigate particle loss mechanisms.

Conclusions:

The ARMS is an effective diagnostic for studying particle loss in helical plasmas.
The methodology allows for detailed analysis of particle transport and confinement.
This research contributes to the understanding of plasma behavior in fusion devices.