Characterization and calibration of 8-channel E-band heterodyne radiometer system for SST-1 tokamak

Journal Article · Thu May 15 00:00:00 EDT 2014 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.4873197· OSTI ID:22254892

Siju, Varsha; Kumar, Dharmendra; Shukla, Praveena; Pathak, S. K. ^[1]

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1. Institute for Plasma Research, Bhat, Gandhinagar, Gujarat 382428 (India)

An 8-channel E-band heterodyne radiometer system (74–86 GHz) is designed, characterized, and calibrated to measure the radial electron temperature profile by measuring Electron Cyclotron Emission spectrum at SST-1 Tokamak. The developed radiometer has a noise equivalent temperature of 1 eV and sensitivity of 5 × 10{sup 9} V/W. In order to precisely measure the absolute value of electron temperature, a calibration measurement of the radiometer system is performed using hot-cold Dicke switch method, which confirms the system linearity.

• OSTI ID: 22254892
• Journal Information: Review of Scientific Instruments, Vol. 85, Issue 5; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0034-6748
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
CALIBRATION
CYCLOTRONS
ELECTRON TEMPERATURE
EMISSION SPECTRA
RADIOMETERS
SENSITIVITY
SWITCHES
TOKAMAK DEVICES