1 / 4

NTM Stability Modification using LHCD

NTM Stability Modification using LHCD. Dale Meade, Bob Granetz, Charles Kessel, S. Jardin… Alcator C-Mod Ideas Forum MIT December 2-6, 2004. NTM Stability Modification using LHCD. Background: • Higher b N regimes of interest to burning plasmas may be NTM unstable

shamus
Télécharger la présentation

NTM Stability Modification using LHCD

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. NTM Stability Modification using LHCD Dale Meade, Bob Granetz, Charles Kessel, S. Jardin… Alcator C-Mod Ideas Forum MIT December 2-6, 2004

  2. NTM Stability Modification using LHCD Background: • Higher bN regimes of interest to burning plasmas may be NTM unstable • LHCD, and RF in general, is a potential tool for controlling NTMs • Critical for AT modes in Burning Plasma experiments Purpose: • Investigate the effectiveness of RF NTM mitigation techniques in high performance plasmas suitable for a burning plasma experiment References: • Bob Granetz Presentation to C-Mod PAC Feb 23, 2004 • Alcator C-Mod LHCD Upgrade Proposal • Alcator C-Mod Five Year Plan • C. D. Warrick, R. J. Buttery, G. Cunningham, et al, Complete stabilization of Neoclassical Tearing Modes with Lower Hybrid Current Drive on COMPASS-D, Phys. Rev. Lett. 85, 574, (2000)

  3. NTM Stability Modification using LHCD Experimental Approach Initial Survey Phase (Piggy Back): • monitor for NTM activity in – high performance H-mode discharges – high performance LHCD RS-AT discharges Dedicated Run Phase • pick a case with clear and reproducible NTM activity for a more detailed study of using RF for NTM mitigation – reduce seed island with LHCD or counter-FWCD to keep q0 > 1 – use LHCD to modify delta’ by changing the q profile – use modulated LHCD like Compass-D (Warrick et al) Compare with NTM model predictions

More Related