Published December 2002 | Version v1
Journal article Metadata-only

Modelling of mixed-phasing antenna-plasma interactions on JET A2 antennas

Creators

  • 1. Lodestar Research Corporation, Boulder, CO (United States)
  • 2. Lodestar Research Corporation, Boulder, CO (US)
  • 3. Oak Ridge National Laboratory, Oak Ridge, TN (US)
  • 4. EFDA-CSU Garching (DE)
  • 5. Association Euratom-Tekes, VTT (FI)
  • 6. EFDA-CSU Culham (GB)
  • 7. IPP, Euratom Association, Garching (DE)

Description

The use of mixed(monopole-dipole)-phasing of a set of ion cyclotron range of frequency antennas is potentially useful to optimize tokamak performance. However, recent mixed-phasing experiments on JET, described here, showed undesirable antenna-plasma interactions under certain circumstances. A possible physical mechanism to explain the experimental results is discussed, namely, rf-driven dc parallel currents flowing between adjacent antennas with different phasings can lead to arcing on the antenna with the largest sheath voltage. Means of controlling the interaction are discussed. (author)

Availability note (English)

Also available on-line: http://www.iop.org/

Additional details

Identifiers

URL
http://www.iop.org/;
DOI
10.1088/0029-5515/42/12/302;
PII
S0029-5515(02)53939-9;

Publishing Information

Journal Title
Nuclear Fusion
Journal Volume
42
Journal Issue
12
Journal Page Range
p. 1356-1364
ISSN
0029-5515

INIS

Country of Publication
International Atomic Energy Agency (IAEA)
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
33070467
Subject category
S70: PLASMA PHYSICS AND FUSION TECHNOLOGY;
Descriptors DEI
ANTENNAS; ELECTRIC CURRENTS; ICR HEATING; JET TOKAMAK; PERFORMANCE; RF SYSTEMS
Descriptors DEC
CLOSED PLASMA DEVICES; CURRENTS; ELECTRICAL EQUIPMENT; EQUIPMENT; HEATING; HIGH-FREQUENCY HEATING; PLASMA HEATING; THERMONUCLEAR DEVICES; TOKAMAK DEVICES

Optional Information

Contract/Grant/Project number
Grant DE-FG03-97ER54392
Notes
28 refs, 5 figs, 1 tab
Collaborations
EFDA-JET Workprogramme (Abingdon, Oxfordshire (GB))