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Extending helium partial pressure measurement technology to JET DTE2 and ITER
Culham Sci Ctr, JET, EUROfus Consortium, Abingdon OX14 3DB, Oxon, England.;Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA..
KTH, School of Electrical Engineering and Computer Science (EECS), Electrical Engineering, Fusion Plasma Physics.
KTH, School of Electrical Engineering and Computer Science (EECS), Electrical Engineering, Fusion Plasma Physics.
KTH, School of Electrical Engineering and Computer Science (EECS), Electrical Engineering, Fusion Plasma Physics.
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2016 (English)In: Review of Scientific Instruments, ISSN 0034-6748, E-ISSN 1089-7623, Vol. 87, no 11, article id 11D442Article in journal (Refereed) Published
Abstract [en]

The detection limit for helium (He) partial pressure monitoring via the Penning discharge optical emission diagnostic, mainly used for tokamak divertor effluent gas analysis, is shown here to be possible for He concentrations down to 0.1% in predominantly deuterium effluents. This result from a dedicated laboratory study means that the technique can now be extended to intrinsically (non-injected) He produced as fusion reaction ash in deuterium-tritium experiments. The paper also examines threshold ionization mass spectroscopy as a potential backup to the optical technique, but finds that further development is needed to attain with plasma pulse-relevant response times. Both these studies are presented in the context of continuing development of plasma pulse-resolving, residual gas analysis for the upcoming JET deuterium-tritium campaign (DTE2) and for ITER. Published by AIP Publishing.

Place, publisher, year, edition, pages
AMER INST PHYSICS , 2016. Vol. 87, no 11, article id 11D442
National Category
Fusion, Plasma and Space Physics
Identifiers
URN: urn:nbn:se:kth:diva-270427DOI: 10.1063/1.4963713ISI: 000390242300047PubMedID: 27910543Scopus ID: 2-s2.0-84989958783OAI: oai:DiVA.org:kth-270427DiVA, id: diva2:1424443
Conference
21st Topical Conference on High-Temperature Plasma Diagnostics, JUN 05-09, 2016, Madison, WI
Note

QC 20200417

Available from: 2020-04-17 Created: 2020-04-17 Last updated: 2020-04-17

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Bergsåker, HenricBykov, IgorElevant, ThomasFrassinetti, LorenzoGarcia-Carrasco, AlvaroHellsten, TorbjörnIvanova, DaryaJohnson, ThomasMenmuir, SheenaPetersson, PerRachlew, ElisabethRubel, MarekStröm, PetterTholerus, EmmiWeckmann, Armin
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