Progress on 140 GHz, 1 MW, CW series gyrotrons for W7-X

Author

Jelonnek, J. ; Braune, H. ; Dammertz, G. ; Erckmann, V. ; Flamm, J. ; Gantenbein, G. ; Hollmann, F. ; Jonitz, L. ; Kasparek, W. ; Kern, S. ; Laqua, H.P. ; Lechte, C. ; Légrand, F. ; Leonhardt, W. ; Lietaer, G. ; Michel, G. ; Noke, F. ; Purps, F. ; Samarts

Author_Institution

Assoc. EURATOM-KIT, Karlsruhe Inst. of Technol. (KIT), Karlsruhe, Germany

fYear

2012

fDate

23-28 Sept. 2012

Firstpage

1

Lastpage

2

Abstract

The construction of the 140 GHz, 1 MW CW gyrotrons for the 10 MW ECRH system of the stellarator W7-X at IPP Greifswald is ongoing. While acceptance testing of the gyrotrons is progressing, reliable output parameters and stable production have been achieved. This report summarizes the actual status and some topical results. Focus is put on the final construction and latest parameters measured at factory-acceptance tests and site-acceptance tests. Parallel to the design optimization a new spectral measurement method has been developed, which allows time-dependent broadband spectral measurements with μs resolution for ms range pulses. Results of measurements done with W7-X gyrotrons are shown.

Keywords

gyrotrons; millimetre wave tubes; stellarators; testing; CW series gyrotrons; ECRH system; IPP Greifswald; W7-X gyrotrons; W7-X stellarator; design optimization; factory-acceptance tests; frequency 140 GHz; power 1 MW; power 10 MW; site-acceptance tests; spectral measurement method; time-dependent broadband spectral measurements; Electron tubes; Frequency modulation; Gyrotrons; Oscillators; Power generation; Production; Reliability;

fLanguage

English

Publisher

ieee

Conference_Titel

Infrared, Millimeter, and Terahertz Waves (IRMMW-THz), 2012 37th International Conference on

Conference_Location

Wollongong, NSW

ISSN

2162-2027

Print_ISBN

978-1-4673-1598-2

Electronic_ISBN

2162-2027

Type

conf

DOI

10.1109/IRMMW-THz.2012.6380200

Filename

6380200