Please use this identifier to cite or link to this item:
https://hdl.handle.net/10216/101682
Author(s): | F. Salzedas A. A. M. Oomens F. C. Schuller RTP Team |
Title: | The effect of ECRH on the stability of the radiation induced m=2 mode and on the current quench of a major disruption |
Issue Date: | 2002 |
Abstract: | The results of a series of experiments done in RTP which had the purpose to avoid or ameliorate radiative density-limit disruptions, will be reported. Avoidance of disruptions was achieved by stabilizing the m = 2 radiation induced tearing mode (RTM) with electron cyclotron resonance heating (ECRH). Both continuous and modulated power deposition was studied. It was found that stabilization with modulated ECRH in phase with the O-point was less efficient than continuous ECRH, contrary to theoretical expectations. Detailed scans of the EC power deposition and of the power intensity were in agreement with the assumption that radiative heat loss is the driving mechanism of this m = 2 mode. Amelioration of disruptions was achieved, in a pilot experiment, by applying ECRH at the end of the energy quench. In this way, the current decay that follows a major density-limit disruption could be reversed. |
Subject: | Física nuclear, Física Nuclear physics, Physical sciences |
Scientific areas: | Ciências exactas e naturais::Física Natural sciences::Physical sciences |
URI: | https://repositorio-aberto.up.pt/handle/10216/101682 |
Document Type: | Artigo em Revista Científica Internacional |
Rights: | restrictedAccess |
Appears in Collections: | FEUP - Artigo em Revista Científica Internacional |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
60794.pdf Restricted Access | 695 kB | Adobe PDF | Request a copy from the Author(s) |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.