Recent progress on improving ICRF coupling and reducing RF-specific impurities in ASDEX Upgrade

The recent scientific research on ASDEX Upgrade (AUG) has greatly advanced solutions to two issues of Radio Frequency (RF) heating in the Ion Cyclotron Range of Frequencies (ICRF): (a) the coupling of ICRF power to the plasma is significantly improved by density tailoring with local gas puffing; (b)...

Full description

Bibliographic Details
Main Authors: Zhang Wei, Bobkov Volodymyr, Noterdaeme Jean-Marie, Tierens Wouter, Aguiam Diogo, Bilato Roberto, Coster David, Colas Laurent, Crombé Kristel, Fuenfgelder Helmut, Faugel Helmut, Feng Yuhe, Jacquot Jonathan, Jacquet Philippe, Kallenbach Arne, Kostic Ana, Lunt Tilmann, Maggiora Riccardo, Ochoukov Roman, Silva Antonio, Suárez Guillermo, Tuccilo Angelo A., Tudisco Onofrio, Usoltceva Mariia, Van Eester Dirk, Wang Yongsheng, Yang Qingxi
Format: Article
Language:English
Published: EDP Sciences 2017-01-01
Series:EPJ Web of Conferences
Online Access:https://doi.org/10.1051/epjconf/201715702013
Description
Summary:The recent scientific research on ASDEX Upgrade (AUG) has greatly advanced solutions to two issues of Radio Frequency (RF) heating in the Ion Cyclotron Range of Frequencies (ICRF): (a) the coupling of ICRF power to the plasma is significantly improved by density tailoring with local gas puffing; (b) the release of RF-specific impurities is significantly reduced by minimizing the RF near field with 3-strap antennas. This paper summarizes the applied methods and reviews the associated achievements.
ISSN:2100-014X