A coaxial magnetron injection gun - recent experimental results and an improved gun design

Author

Piosczyk, B.

Author_Institution

Inst. fur Hochleistungsimpuls- und Mikrowellentechnik, Forschungszentrum Karlsruhe Assoc. EURATOM-FZK, Germany

fYear

2003

fDate

28-30 May 2003

Firstpage

268

Lastpage

269

Abstract

This paper deals with coaxial magnetron injection gun with an RF output power of 2 MW, CW, operated at 170 GHz for the ITER Tokamak. Experiments are performed on a coaxial gyrotron operated in the TE_31, ₁₇ mode. The gyrotron is of demountable type with no sweeping of the electron beam along collector surface. The guns operating with depressed collector a significantly more dense plasma along the beam path may be created. Penning discharge due to trapping of electrons, a new CMIG gun has been designed. The gun is fabricated for use in a 2 MW, 170 GHz coaxial gyrotron operated in the TE_34,19 mode.

Keywords

Penning discharges; Tokamak devices; electron guns; electron traps; gyrotrons; magnetrons; plasma density; 170 GHz; 2 MW; Penning discharge; TE mode; Tokamak devices; coaxial gyrotron; coaxial magnetron injection gun; collector surface; dense plasma; electron beam sweeping; electrons trapping; Coaxial components; Electron beams; Guns; Gyrotrons; Plasma density; Power generation; Radio frequency; Surface discharges; Tellurium; Tokamaks;

fLanguage

English

Publisher

ieee

Conference_Titel

Vacuum Electronics, 2003 4th IEEE International Conference on

Print_ISBN

0-7803-7699-4

Type

conf

DOI

10.1109/IVEC.2003.1286299

Filename

1286299