Preliminary Results from Electron Cyclotron Measurements at SST-1

10th Asia Plasma and Fusion Association Conference

Siju, Varsha^1 ; Shukla, Praveena^1 ; Raval, Jayesh^1 ; Shankara, Joisa Y.^1 ; Pathak, S.K.^1

Institute for Plasma Research, Bhat, Gandhinagar

382 428, India^1

关键词: Electron cyclotron emission;    Electron cyclotrons;    Heterodyne radiometer;    Measurements of;    Noise temperature;    Radiation temperature;    Second harmonics;    Spatial resolution;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/823/1/012057/pdf
DOI  :  10.1088/1742-6596/823/1/012057

来源: IOP

【 摘 要 】

An 8-channel heterodyne radiometer system is developed and installed for the measurements of second harmonic electron cyclotron emission (ECE) at magnetic field of 1.5 T at SST-1. This system covers a spectral range of 75.4 to 84.5 GHz at a spatial resolution of less than 1 cm, sensitivity of 9.51 x 106V/W. The calculated noise temperature of the system is 1.66 eV. The system is calibrated using Hot/cold technique. This paper presents the preliminary observations of the heterodyne radiometer system at SST-1 and the measured radiation temperature.