High power heating of the FTU tokamak plasma at the fundamental electron cyclotron resonance of 140 GHz

Journal Article · Thu Feb 01 00:00:00 EST 1996 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.49571· OSTI ID:284129

Cirant, S; Bruschi, A ^[1]; Buratti, P ^[2]; Granucci, G; Orefice, A; Nowak, S; Simonetto, A; Solari, G ^[1]; Tudisco, O ^[2]

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1. Istituto di Fisica del Plasma, Associazione EURATOM/ENEA/CNR, via Bassini 15, 20133, Milano (Italy)
2. Centro Ricerche Energia, Associazione EURATOM/ENEA sulla Fusione, CRE Frascati, C.P.65, 00044 Frascati (Italy)

This paper describes in detail the results of a series of ECRH experiments with one Gycom gyrotron at 140 GHz, 0.5 MW, carried out on the FTU tokamak at a magnetic field in the range 5{divided_by}5.8 T. The observed wave absorption is strong and localized, typically within 20{percent} of the plasma minor radius. In addition to electron heating (0.8{divided_by}2.5 keV, depending on the electron density), and in spite of the limited pulse length of 15 ms, a significant increase of the neutron yield from deuterium plasmas was observed at the highest electron densities so far achieved during ECRH (1.2{divided_by}1.8 10{sup 20} m{sup {minus}3}). Thermal waves were generated by modulating the heating power, allowing an estimate of the power deposition profile and of the plasma thermal conductivity. {copyright} {ital 1996 American Institute of Physics.}

• Sponsoring Organization: USDOE
• OSTI ID: 284129
• Report Number(s): CONF-9505105-; ISSN 0094-243X; TRN: 96:021725
• Journal Information: AIP Conference Proceedings, Vol. 355, Issue 1; Conference: 11. topical conference on radio frequency in plasmas, Palm Springs, CA (United States), 17-19 May 1995; Other Information: PBD: Feb 1996
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION
ECR HEATING
TOKAMAK DEVICES
GHZ RANGE 100-1000
ELECTRON DENSITY
POWER DENSITY
ELECTRON TEMPERATURE
KEV RANGE 01-10
FUSION YIELD
NEUTRON EMISSION