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Title: Energy spectrum of longitudinal ion losses in the GDT facility under development of Alfvén ion-cyclotron instability

The influence of Alfvén ion cyclotron instability on the longitudinal losses of particles and energy from the GDT gas-dynamic trap was studied experimentally. To record the energy spectrum of ions escaping from the facility along magnetic field lines, a wide-range energy analyzer was attached to the expander. Processing of the experimental data made it possible to determine the time evolution of the ion energy distribution function and showed that the relative increase in the loss power during the development of instability did not exceed 1%. This result confirms the main conclusion of the theoretical model describing the interaction between an Alfvén wave and resonance particles and predicting that this microinstability insignificantly affects the confinement of hot ions in open magnetic traps.
Authors:
; ; ; ; ; ;  [1]
  1. Siberian Branch, Russian Academy of Sciences, Budker Institute of Nuclear Physics (Russian Federation)
Publication Date:
OSTI Identifier:
22472106
Resource Type:
Journal Article
Resource Relation:
Journal Name: Plasma Physics Reports; Journal Volume: 41; Journal Issue: 10; Other Information: Copyright (c) 2015 Pleiades Publishing, Ltd.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ALFVEN WAVES; CLOSED CONFIGURATIONS; CYCLOTRON INSTABILITY; ENERGY SPECTRA; IONS; LOSSES; MAGNETIC FIELDS; TRAPS