Consideration of neutral beam prompt loss in the design of a tokamak helicon antenna

Pace, D. C.; Van Zeeland, M. A.; Fishler, B.; Murphy, C.

doi:10.1016/j.fusengdes.2016.07.018

Title: Consideration of neutral beam prompt loss in the design of a tokamak helicon antenna

Journal Article · Tue Aug 02 00:00:00 EDT 2016 · Fusion Engineering and Design

DOI:https://doi.org/10.1016/j.fusengdes.2016.07.018· OSTI ID:1422505

Pace, D. C. ^[1]; Van Zeeland, M. A. ^[1]; Fishler, B. ^[1]; Murphy, C. ^[1]

General Atomics, San Diego, CA (United States)

Neutral beam prompt losses (injected neutrals that ionize such that their first poloidal transit intersects with the wall) can put appreciable power on the outer wall of tokamaks, and this power may damage the wall or other internal components. These prompt losses are simulated including a protruding helicon antenna installation in the DIII-D tokamak and it is determined that 160 kW of power will impact the antenna during the injection of a particular neutral beam. Protective graphite tiles are designed in response to this modeling and the wall shape of the installed antenna is precisely measured to improve the accuracy of these calculations. Initial experiments con rm that the antenna component temperature increases according to the amount of neutral beam energy injected into the plasma. Incorporating neutral beam prompt loss considerations into the design of this in-vessel component serves to ensure that adequate protection or cooling is provided.

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Research Organization:: General Atomics, San Diego, CA (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Fusion Energy Sciences (FES); European Consortium for the Development of Fusion Energy (EUROfusion)

Grant/Contract Number:: FC02-04ER54698

OSTI ID:: 1422505

Alternate ID(s):: OSTI ID: 1371877; OSTI ID: 1399145

Report Number(s):: DOE-GA-54698; PII: S0920379616305269; TRN: US1801613

Journal Information:: Fusion Engineering and Design, Vol. 112, Issue C; Related Information: D.C. Pace, M.A. Van Zeeland, B. Fishler, and C. Murphy, "Consideration of neutral beam prompt loss in the design of a tokamak helicon antenna," Fus Eng Des 112, 14-20 (2016); ISSN 0920-3796

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 5 works

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Cited By (2)

Experiments on helicons in DIII-D—investigation of the physics of a reactor-relevant non-inductive current drive technology Pinsker, R. I.; Prater, R.; Moeller, C. P. Nuclear Fusion, Vol. 58, Issue 10 https://doi.org/10.1088/1741-4326/aad1f8	journal	July 2018
Alfvén eigenmodes and fast ion transport in negative triangularity DIII-D plasmas Van Zeeland, M. A.; Collins, C. S.; Heidbrink, W. W. Nuclear Fusion, Vol. 59, Issue 8 https://doi.org/10.1088/1741-4326/ab2488	journal	June 2019

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70 PLASMA PHYSICS AND FUSION TECHNOLOGY
neutral beam
prompt loss
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