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Investigating fusion plasma instabilities in the Mega Amp Spherical Tokamak using mega electron volt proton emissions
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Applied Nuclear Physics.
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2014 (English)In: Review of Scientific Instruments, ISSN 0034-6748, E-ISSN 1089-7623, Vol. 85, no 11, 11D701- p.Article in journal (Refereed) Published
Abstract [en]

The proton detector (PD) measures 3 MeV proton yield distributions from deuterium-deuterium fusion reactions within the Mega Amp Spherical Tokamak (MAST). The PD's compact four-channel system of collimated and individually oriented silicon detectors probes different regions of the plasma, detecting protons (with gyro radii large enough to be unconfined) leaving the plasma on curved trajectories during neutral beam injection. From first PD data obtained during plasma operation in 2013, proton production rates (up to several hundred kHz and 1 ms time resolution) during sawtooth events were compared to the corresponding MAST neutron camera data. Fitted proton emission profiles in the poloidal plane demonstrate the capabilities of this new system.

Place, publisher, year, edition, pages
2014. Vol. 85, no 11, 11D701- p.
National Category
Physical Sciences
URN: urn:nbn:se:uu:diva-240141DOI: 10.1063/1.4889736ISI: 000345646000052PubMedID: 25430211OAI: oai:DiVA.org:uu-240141DiVA: diva2:776636
Available from: 2015-01-07 Created: 2015-01-05 Last updated: 2015-01-07Bibliographically approved

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Cecconello, MarcoKlimek, Iwona
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