Design of a variable frequency comb reflectometer system for the ASDEX Upgrade tokamak  

作　　者：T HAPPEL W KASPAREK P HENNEQUIN K HÖFLER C HONORÉ the ASDEX Upgrade Team 

机构地区：[1]Max-Planck-Institut für Plasmaphysik,Boltzmannstr.2,85748 Garching,Germany [2]IGVP,Universität Stuttgart,Pfaffenwaldring 31,70569 Stuttgart,Germany [3]Laboratoire de Physique des Plasmas,CNRS,École Polytechnique,Sorbonne Université,F-91120 Palaiseau,France [4]Physik-Department E28,Technische Universität München,James-Franck-Str.1,85748 Garching,Germany [5]不详

出　　处：《Plasma Science and Technology》2020年第6期8-14,共7页等离子体科学和技术（英文版）

基　　金：funding from the Euratom research and training programme 2014-2018 and2019-2020 under grant agreement No.633053。

摘　　要：Comb reflectometers offer the advantage of measuring several radial positions in plasma simultaneously.This allows for the investigation of fast timescales during L-H transitions,I-phases,I-mode bursts,transients during heat wave propagation,etc.A drawback of many present-day systems is that they use a fixed frequency difference between the probing frequencies.Hence,although the central probing frequency can be varied,the probing frequency difference is usually fixed.The new design presented in this work uses an advanced microwave generation and detection scheme,which allows for arbitrary probing frequencies and probing frequency separations.

关 键 词：REFLECTOMETRY microwaves plasma diagnostic REFLECTOMETER TURBULENCE 

分 类 号：TL631.24[核科学技术—核技术及应用]