An ELM-resilient RF arc detection system for DIII-D based on electromagnetic and sound emissions from the arc

Journal Article · Tue Apr 01 00:00:00 EST 1997 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.53351· OSTI ID:580281

Phelps, D A ^[1]

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1. General Atomics, San Diego, California 92186 (United States)

Two detection methods based solely on sound and electromagnetic emissions from the arc are presented. Detection of arc induced sound signals 40 to 50 dB above background noise are observed. Detection of arc induced low radio frequency (HF) electromagnetic noise levels 20 to 60 dB above background are observed. The arc noise is randomly strongest on side A and/or B of the DIII-D rf system. The sum of these sensors correlates with tripping due to an increase in the rf reflection coefficient. The sensors are resilient to ELMs and other plasma noise. {copyright} {ital 1997 American Institute of Physics.}

• Research Organization: General Atomics, San Diego, CA (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC03-89ER51114
• OSTI ID: 580281
• Report Number(s): CONF-9704102-; ISSN 0094-243X; TRN: 98:004095
• Journal Information: AIP Conference Proceedings, Vol. 403, Issue 1; Conference: 12. topical conference on radio frequency power in plasmas, Savannah, GA (United States), 1-3 Apr 1997; Other Information: PBD: Apr 1997
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION
TOKAMAK DEVICES
ICR HEATING
ELECTROMAGNETIC RADIATION
SOUND WAVES
DETECTION
PLASMA DIAGNOSTICS