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

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 betan 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

[1]  G. D. Loesser,et al.  Design and engineering of the Alcator C-Mod lower hybrid current drive system , 2002, Proceedings of the 19th IEEE/IPSS Symposium on Fusion Engineering. 19th SOFE (Cat. No.02CH37231).

[2]  J. Alex,et al.  The Alcator C-Mod lower hybrid current drive experiment transmitter and power system , 2002, Proceedings of the 19th IEEE/IPSS Symposium on Fusion Engineering. 19th SOFE (Cat. No.02CH37231).

[3]  W. Burke,et al.  Lower hybrid low power microwave active control system design, installation and testing on Alcator C-Mod , 2003, 20th IEEE/NPSS Symposium onFusion Engineering, 2003..

[4]  P. T. Bonoli,et al.  Modelling of advanced tokamak scenarios with LHCD in Alcator C-Mod , 2000 .

[5]  Miklos Porkolab,et al.  Design of a Compact Lower Hybrid Coupler for Alcator C-Mod , 2003 .