Published April 2009 | Version v1
Journal article Metadata-only

Effects of ICRF induced density modifications on LH wave coupling at JET

Creators

  • 1. UKAEA/Euratom Fusion Association, Culham Science Centre, Abingdon, OX14 3DB (United Kingdom)
  • 2. Association Euratom-CEA, St Paul-lez-Durance (France)
  • 3. Association EURATOM/IPP.CR, Prague (Czech Republic)
  • 4. Plasmaphysics Lab, ERM-KMS, Association EURATOM-Belgian State, Brussels (Belgium)
  • 5. Assoc. Euratom-Tekes, VTT, Espoo (Finland)

Description

Lower hybrid (LH) wave coupling is modified and usually degraded when the system is powered simultaneously with the ion cyclotron range of frequency (ICRF) antennas magnetically connected to the launcher. This has been attributed to scrape-off layer density modifications by the RF sheaths. LH reflection coefficients dependences on various parameters are investigated and shown to be consistent with RF sheath physics. Gas puffing near the launcher has been used to improve the coupling of LH waves.

Availability note (English)

Available from http://dx.doi.org/10.1088/0741-3335/51/4/044003

Additional details

Identifiers

DOI
10.1088/0741-3335/51/4/044003;
PII
S0741-3335(09)86887-5;

Publishing Information

Journal Title
Plasma Physics and Controlled Fusion
Journal Volume
51
Journal Issue
4
Journal Page Range
[20 p.]
ISSN
0741-3335
CODEN
PPCFET

INIS

Country of Publication
United Kingdom
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
41032158
Subject category
S70: PLASMA PHYSICS AND FUSION TECHNOLOGY;
Descriptors DEI
ANTENNAS; COUPLING; ICR HEATING; JET TOKAMAK; LOWER HYBRID HEATING; PLASMA SCRAPE-OFF LAYER
Descriptors DEC
BOUNDARY LAYERS; CLOSED PLASMA DEVICES; ELECTRICAL EQUIPMENT; EQUIPMENT; HEATING; HIGH-FREQUENCY HEATING; LAYERS; PLASMA HEATING; THERMONUCLEAR DEVICES; TOKAMAK DEVICES

Optional Information

Collaborations
JET EFDA Contributors