EPJ Web of Conferences (Sep 2012)

Recent Progress of 2MW 140GHz ECRH System on HL-2A

  • Lu Z.H.,
  • Pu Y.N.,
  • Chen G.Y.,
  • Wang M.W.,
  • Feng K.,
  • Wang C.,
  • Xia D.H.,
  • Lu B.,
  • Wang H.,
  • Kang Z.H.,
  • Zhou J.,
  • Li B.,
  • Rao J.,
  • Huang M.,
  • Wang J.Q.,
  • Duan X.R.,
  • Liu Y.

DOI
https://doi.org/10.1051/epjconf/20123204012
Journal volume & issue
Vol. 32
p. 04012

Abstract

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In order to provide more capability of physics study for high-performance plasma, such as current profile control, neoclassical tearing modes suppression, transport study and so on, a new 2MW/140GHz/3s second-harmonic ECRH system with X-mode injection is on schedule on HL-2A. The total power of this system is 2MW and the pulse duration is 3 sec, which is generated by two gyrotrons manufactured by GYCOM. Two evacuated Φ63.5mm transmission lines were used to propagate these two 1MW/3s wave beams. A fast steerable launcher has been designed and installed on the HL-2A tokamak to inject four beams with narrow beam width and enable continuous beam scanning in toroidal and poloidal directions independently.