Monitoring Alfven cascades with interferometry on the JET Tokamak

被引：79

作者：

Sharapov, SE ^{[1
]}

Alper, B

Fessey, J

Hawkes, NC

Young, NP

Nazikian, R

Kramer, GJ

Borba, DN

Hacquin, S

De La Luna, E

Pinches, SD

Rapp, J

Testa, D

机构：

[1] UKAEA Euratom Fus Assoc, Culham Sci Ctr, Abingdon OX14 3DB, Oxon, England

[2] Princeton Plasma Phys Lab, Princeton, NJ 08543 USA

[3] EURATOM, IST, Ctr Fusao Nucl, P-1049001 Lisbon, Portugal

[4] EURATOM, CIEMAT, Lab Nacl Fus, Madrid, Spain

[5] EURATOM, Max Planck Inst Plasmaphys, D-85748 Garching, Germany

[6] Forschungszentrum Julich, EURATOM Assoc, D-52425 Julich, Germany

[7] Ecole Polytech Fed Lausanne, CRPP, Assoc Euratom Confederat Suisse, CH-1015 Lausanne, Switzerland

来源：

PHYSICAL REVIEW LETTERS | 2004年 / 93卷 / 16期

基金：

欧盟地平线“2020”; 英国工程与自然科学研究理事会;

关键词：

D O I：

10.1103/PhysRevLett.93.165001

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A microwave interferometry technique is applied for the first time for detecting a discrete spectrum of Alfven cascade (AC) eigenmodes excited with fast ions in reversed magnetic shear plasmas of the Joint European Torus. The interferometry measurements of plasma density perturbations associated with ACs show an unprecedented frequency and time resolution superior to that obtained with external magnetic coils. The measurements of ACs are used for monitoring the evolution of the safety factor and density of rational magnetic surfaces in the region of maximum plasma current.

引用

页码：165001 / 1

页数：4

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