Parasitic signals in the receiving band of the Sub-Harmonic Arc Detection system on JET ICRF Antennas

Journal Article · Fri Dec 23 00:00:00 EST 2011 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3664919· OSTI ID:21612477

Jacquet, P; Blackman, T; Day, I E; Graham, M; Mayoral, M -L; Monakhov, I; Nightingale, M; Sharapov, S E ^[1]; Berger-By, G ^[2]; Bobkov, V ^[3]; Durodie, F; Vrancken, M ^[4]; Hellsten, T ^[5]; Laxaaback, M ^[5]

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1. EURATOM/CCFE Fusion Association, Culham Science Center, Abingdon, 0X14 3DB (United Kingdom)
2. CEA, IRFM, F-l3108 Saint-Paul-lez Durances (France)
3. Max Planck IPP/EURATOM Assoziation, D-85748 Garching (Germany)
4. Association EURATOM/Belgium State, LPP-ERM/KMS, B-1000 Brussels (Belgium)
5. Association EURATOM-VR, Fusion Plasma Physics, EES, KTH, Stockholm (Sweden)

When testing the SHAD system on JET ICRF antennas, parasitic signals in the detection band (5-20MHz) were detected. We have identified emission from grid breakdown events in the Neutral Beam injectors, and Ion Cyclotron Emission from the plasma. Spurious signals in the band 4-10 MHz are also often observed at the onset of ELM events. Such parasitic signals could complicate the design and operation of SHAD in ICRF systems for fusion devices.

• OSTI ID: 21612477
• Journal Information: AIP Conference Proceedings, Vol. 1406, Issue 1; Conference: 9. topical conference on radio frequency power in plasmas, Newport (United States), 1-3 Jun 2011; Other Information: DOI: 10.1063/1.3664919; (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ANTENNAS
CURRENT-DRIVE HEATING
EDGE LOCALIZED MODES
ELECTROMAGNETIC FIELDS
FOURIER ANALYSIS
ICR HEATING
ION CYCLOTRON-RESONANCE
IONS
JET TOKAMAK
MHZ RANGE
OPERATION
PLASMA
SIGNALS
CHARGED PARTICLES
CLOSED PLASMA DEVICES
CYCLOTRON RESONANCE
ELECTRIC HEATING
ELECTRICAL EQUIPMENT
EQUIPMENT
FREQUENCY RANGE
HEATING
HIGH-FREQUENCY HEATING
INSTABILITY
JOULE HEATING
PLASMA HEATING
PLASMA INSTABILITY
PLASMA MACROINSTABILITIES
RESONANCE
THERMONUCLEAR DEVICES
TOKAMAK DEVICES