Commissioning of the Lower Hybrid Current Drive System on Alcator C-Mod

Author

Terry, D. ; Parker, R. ; Liptac, J. ; Kanojia, A. ; Johnson, D. ; Koert, P. ; Wallace, G. ; Beals, D. ; Vieira, R. ; Basse, N. ; Wukitch, S. ; Burke, W. ; Beck, W. ; Grimes, M. ; Gwinn, D. ; Bernabei, S. ; Greenough, N. ; Wilson, J.R.

Author_Institution

Plasma Sci. & Fusion Center, MIT, Cambridge, MA

fYear

2005

fDate

Sept. 2005

Firstpage

1

Lastpage

4

Abstract

A lower hybrid current drive (LHCD) system has been developed for current profile control of advanced tokamak experiments on Alcator C-Mod. LHCD along with Ion Cyclotron Radio Frequency (ICRF) heating will be used to develop regimes with high confinement, high beta_n and high bootstrap fraction and extend them to quasi-steady-state conditions. This paper will describe the commissioning and initial operation of the LHCD system that includes a 50 kV, 208 A pulsed-power supply, twelve 250 kW Klystron transmitters, a 96 waveguide launcher and required control, protection and data acquisition systems

Keywords

Tokamak devices; commissioning; data acquisition; fusion reactor design; fusion reactor ignition; fusion reactor operation; klystrons; plasma confinement; plasma radiofrequency heating; pulsed power supplies; 208 A; 250 kW; 50 kV; Alcator C-Mod; ICRF heating; Ion Cyclotron Radio Frequency heating; Klystron transmitters; LHCD system commissioning; LHCD system operation; advanced tokamak experiments; bootstrap fraction; confinement; data acquisition systems; lower hybrid current drive system commissioning; pulsed-power supply; quasisteady-state conditions; waveguide launcher; Assembly; Control systems; Gaskets; Klystrons; Optical transmitters; Optical waveguides; Power supplies; Power system protection; Tokamaks; Waveguide components;

fLanguage

English

Publisher

ieee

Conference_Titel

Fusion Engineering 2005, Twenty-First IEEE/NPS Symposium on

Conference_Location

Knoxville, TN

Print_ISBN

0-4244-0150-X

Electronic_ISBN

0-4244-0150-X

Type

conf

DOI

10.1109/FUSION.2005.252948

Filename

4018982