Investigating fusion plasma instabilities in the Mega Amp Spherical Tokamak using mega electron volt proton emissions (invited) | Zendy

R. V. Perez | Zendy; W. Boeglin | Zendy; D. S. Darrow | Zendy; M. Cecconello | Zendy; I. Klimek | Zendy; S. Allan | Zendy; R. Akers | Zendy; D. Keeling | Zendy; K. G. McClements | Zendy; R. Scannell | Zendy; M. Turnyanskiy | Zendy; A. M. Angulo | Zendy; Pierre Avila | Zendy; Omar Leon | Zendy; Cristina Silvia Polo López | Zendy; O. Jones | Zendy; N. J. Conway | Zendy; C. Michael | Zendy

Open Access

Investigating fusion plasma instabilities in the Mega Amp Spherical Tokamak using mega electron volt proton emissions (invited)

Author(s) -

R. V. Perez,

W. Boeglin,

D. S. Darrow,

M. Cecconello,

I. Klimek,

S. Allan,

R. Akers,

D. Keeling,

K. G. McClements,

R. Scannell,

M. Turnyanskiy,

A. M. Angulo,

Pierre Avila,

Omar Leon,

Cristina Silvia Polo López,

O. Jones,

N. J. Conway,

C. Michael

Publication year - 2014

Publication title -

review of scientific instruments

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.605

H-Index - 165

eISSN - 1089-7623

pISSN - 0034-6748

DOI - 10.1063/1.4889736

Subject(s) - proton , plasma , spherical tokamak , tokamak , atomic physics , physics , neutron emission , nuclear physics , collimated light , detector , electron , deuterium , nuclear fusion , tokamak fusion test reactor , plasma diagnostics , neutron , optics , laser , neutron temperature

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.

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