Microwave Reflectometer to measure radial profile of the plasma density on SST-1 Tokamak

Author

Atrey, P.K. ; Joshi, N.Y.

Author_Institution

Inst. for Plasma Res., Gandhinagar

fYear

2008

fDate

21-24 Nov. 2008

Firstpage

460

Lastpage

462

Abstract

Ka-Band scanning frequency microwave Reflectometer is designed and developed to measure the plasma density profile in steady state plasma. It scans the full band (24-36 GHz) in 10 mus. It measures the density profile from minor radius r = 14 to 17.34 cm in SST-1 plasma. Single antenna and optics is used for transmitting and receiving purpose. Quadrature phase detector is used for absolute phase determination. 40 m long oversized waveguide of X- Band and Mitre Bends are used to reduce the losses in plasma path. The design and working of Reflectometer are discussed in this paper.

Keywords

Tokamak devices; microwave reflectometry; plasma density; plasma diagnostics; Ka-Band scanning frequency microwave reflectometer; SST-1 tokamak; plasma density profile; quadrature phase detector; radius 14 cm to 17.34 cm; size 40 m; steady state plasma; waveguide; Antenna measurements; Density measurement; Frequency measurement; Microwave measurements; Optical waveguides; Plasma density; Plasma measurements; Plasma waves; Steady-state; Tokamaks; Density fluctuations; Directional coupler; Gunn oscillator; Plasma Diagnostics; Reflectometer; magic tee; mitre bend;

fLanguage

English

Publisher

ieee

Conference_Titel

Recent Advances in Microwave Theory and Applications, 2008. MICROWAVE 2008. International Conference on

Conference_Location

Jaipur

Print_ISBN

978-1-4244-2690-4

Electronic_ISBN

978-1-4244-2691-1

Type

conf

DOI

10.1109/AMTA.2008.4763046

Filename

4763046