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Enhancements to the...
Enhancements to the JET poloidally scanning vacuum ultravioletvisible spectrometers
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Lawson, K. D. (author)
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Barnsley, R. (author)
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Maggi, C. F. (author)
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Tyrrell, S. (author)
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Beldishevski, M. (author)
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- Brzozowski, Jerzy (author)
- KTH,EuratomVR Association
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Buckley, M. (author)
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Cass, G. (author)
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- Elevant, Thomas (author)
- KTH,EuratomVR Association
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Griph, S. (author)
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Heesterman, P. (author)
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Hogben, C. (author)
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Jennison, M. (author)
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Stamp, M. F. (author)
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Williams, J. (author)
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Zastrow, K. -D (author)
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(creator_code:org_t)
- AIP Publishing, 2012
- 2012
- English.
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In: Review of Scientific Instruments. - : AIP Publishing. - 0034-6748 .- 1089-7623. ; 83:10, s. 10D536-
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- Enhancements to the JET poloidally scanning spectrometers are presented, which will aid the exploitation of the recently installed ITER-like wall in JET. They include the installation of visible filterphotomultiplier tube assemblies and spectrometers and the replacement of large rotating mirrors in the JET vacuum with small oscillating mirrors outside. The upgrade has resulted in a more robust and reliable diagnostic than before, which is described. Drifts in the mirror angle reconstructed from quadrature encoder signals are found, a reference signal being required. The use of the small scanning mirrors necessitated the inclusion of focusing mirrors to maintain throughput into the vacuum ultraviolet spectrometers. The mirror design has taken account of the extreme sensitivity of the focusing to the grazing angle of incidence, an aspect of importance in the design of grazing incidence focusing components on future machines, such as ITER. The visible system has been absolutely calibrated using an in-vessel light source.
Subject headings
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Keyword
- Focusing
- Light sources
- Mirrors
- Scanning
- Spectrometry
- Vacuum
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Lawson, K. D.
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Barnsley, R.
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Maggi, C. F.
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Tyrrell, S.
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Beldishevski, M.
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Brzozowski, Jerz ...
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show more...
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Buckley, M.
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Cass, G.
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Elevant, Thomas
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Griph, S.
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Heesterman, P.
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Hogben, C.
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Jennison, M.
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Stamp, M. F.
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Williams, J.
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Zastrow, K. -D
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
- Articles in the publication
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Review of Scient ...
- By the university
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Royal Institute of Technology