Characteristics of an absolutely calibrated flat-field extreme ultraviolet spectrometer in the 10-130 Å range for fusion plasma diagnostics

MB Chowdhuri, S Morita, M Goto - Applied Optics, 2008 - opg.optica.org
A flat-field extreme ultraviolet (EUV) spectrometer with a nominal 2400 grooves/mm
aberration-corrected ruled grating has been developed to analyze the emission spectrum in …

Space-resolved extreme ultraviolet spectrometer for impurity emission profile measurement in large helical device

C Dong, S Morita, M Goto, H Zhou - Review of Scientific Instruments, 2010 - pubs.aip.org
A space-resolved extreme ultraviolet (EUV) spectrometer working in 60–400 Å range has
been developed to observe impurity emission profiles in core and edge plasmas of Large …

A fast-time-response extreme ultraviolet spectrometer for measurement of impurity line emissions in the Experimental Advanced Superconducting Tokamak

L Zhang, S Morita, Z Xu, Z Wu, P Zhang… - Review of Scientific …, 2015 - pubs.aip.org
A flat-field extreme ultraviolet (EUV) spectrometer working in the 20-500 Å wavelength range
with fast time response has been newly developed to measure line emissions from highly …

Time‐resolving extreme ultraviolet spectrograph for fusion diagnostics

RE Bell, M Finkenthal, HW Moos - Review of Scientific Instruments, 1981 - pubs.aip.org
A time‐resolving spectrograph for the simultaneous measurement of emissions at extreme
ultraviolet wavelengths (300–2200 Å) is described. The spectrograph is a 400‐mm normal …

An extreme ultraviolet spectrometer working at 10–130 Å for tungsten spectra observation with high spectral resolution and fast-time response in Experimental …

Z Xu, L Zhang, Y Cheng, S Morita, L Li, W Zhang… - Nuclear Instruments and …, 2021 - Elsevier
A newly developed flat-field extreme ultraviolet (EUV) spectrometer working at 10–130 Å
wavelength range with high spectral resolution and fast-time response has been developed …

Space-resolved extreme ultraviolet spectroscopy free of high-energy neutral particle noise in wavelength range of 10–130 Å on the large helical device

X Huang, S Morita, T Oishi, M Goto… - Review of Scientific …, 2014 - pubs.aip.org
A flat-field space-resolved extreme ultraviolet (EUV) spectrometer system working in
wavelength range of 10–130 Å has been constructed in the Large Helical Device (LHD) for …

A high efficiency ultrahigh vacuum compatible flat field spectrometer for extreme ultraviolet wavelengths

B Blagojević, EO Le Bigot, K Fahy, A Aguilar… - Review of scientific …, 2005 - pubs.aip.org
A custom, flat field, extreme ultraviolet spectrometer built specifically for use with low power
light sources that operate under ultrahigh vacuum conditions is reported. The spectral range …

Passive Spectroscopy in Visible, VUV, and X-Ray Ranges for LHD Diagnostics

M Goto, S Morita, HY Zhou, CF Dong… - Fusion Science and …, 2010 - Taylor & Francis
Various types of spectrometers corresponding to different wavelength ranges from X-ray to
visible have been developed for the Large Helical Device (LHD). The charge-coupled …

Design of a high–efficiency extreme ultraviolet overview spectrometer system for plasma impurity studies on the stellarator experiment Wendelstein 7-X

W Biel, G Bertschinger, R Burhenn, R König… - Review of scientific …, 2004 - pubs.aip.org
The design for a set of four high-efficiency vacuum ultraviolet/extreme ultraviolet (VUV/XUV)
spectrometers has been developed, which shall be used for plasma impurity monitoring and …

Absolute intensity calibration of flat-field space-resolved extreme ultraviolet spectrometer using radial profiles of visible and extreme ultraviolet bremsstrahlung …

C Dong, S Morita, M Goto, E Wang - Review of Scientific Instruments, 2011 - pubs.aip.org
A precise absolute intensity calibration of a flat-field space-resolved extreme ultraviolet
(EUV) spectrometer working in wavelength range of 60–400 Å is carried out using a new …