Overview of operation and experiments in the ADITYA-U tokamak

RL Tanna, H Raj, J Ghosh, R Kumar, S Aich… - Nuclear …, 2019 - iopscience.iop.org
The first Indian tokamak, ADITYA, operated for over two decades with a circular poloidal
limiter, has been upgraded to a tokamak named ADITYA Upgrade (ADITYA-U) to attain …

Role of pinch in Argon impurity transport in ohmic discharges of Aditya-U Tokamak

K Shah, J Ghosh, S Patel, MB Chowdhuri, KA Jadeja… - Scientific Reports, 2023 - nature.com
We present experimental results of the trace argon impurity puffing in the ohmic plasmas of
Aditya-U tokamak performed to study the argon transport behaviour. Argon line emissions in …

Observations of toroidal plasma rotation reversal in the Aditya-U tokamak

G Shukla, K Shah, MB Chowdhuri, H Raj… - Nuclear …, 2019 - iopscience.iop.org
An impurity ion toroidal rotation profile has been observed in the ohmic discharges of the
Aditya-U tokamak from the Doppler-shifted passive charge exchange line emission of C 5+ …

Impurity toroidal rotation profile measurement using upgraded high-resolution visible spectroscopic diagnostic on ADITYA-U tokamak

G Shukla, MB Chowdhuri, K Shah… - Review of Scientific …, 2021 - pubs.aip.org
A high-resolution spectroscopic diagnostic for the measurement of spatial profiles of impurity
ion toroidal rotation velocities on the ADITYA-U tokamak has been upgraded to cover the …

Development of a passive visible spectroscopic diagnostic on HL-2A tokamak

L Liu, DL Yu, WJ Chen, XF He, XX He, YL Wei… - Fusion Engineering and …, 2019 - Elsevier
A passive visible spectroscopic diagnostic which may measure the profiles of line emission
and continuum radiation simultaneously is first installed on HL-2A tokamak. The line …

Investigation of neutral particle dynamics in Aditya tokamak plasma with DEGAS2 code

R Dey, J Ghosh, MB Chowdhuri, R Manchanda… - Nuclear …, 2017 - iopscience.iop.org
Neutral particle behavior in Aditya tokamak, which has a circular poloidal ring limiter at one
particular toroidal location, has been investigated using DEGAS2 code. The code is based …

Observations of visible argon line emissions and its spatial profile from Aditya-U tokamak plasma

K Shah, J Ghosh, G Shukla, MB Chowdhuri… - Review of Scientific …, 2021 - pubs.aip.org
The spectroscopic studies of medium and high Z impurities have been the subject of interest
in fusion research due to their role in mitigating plasma disruption and reducing heat load on …

Investigation of atomic and molecular processes in Hα emission through modelling of measured Hα emissivity profile using DEGAS2 in the ADITYA tokamak

R Dey, MB Chowdhuri, J Ghosh, R Manchanda… - Nuclear …, 2019 - iopscience.iop.org
In order to understand the atomic and molecular processes involved in the emission of the
hydrogen Balmer alpha (H) spectral line from tokamak plasmas, the measured radial profile …

Space-resolved visible spectroscopy for two-dimensional measurement of hydrogen and impurity emission spectra and of plasma flow in the edge stochastic layer of …

M Kobayashi, S Morita, M Goto - Review of Scientific Instruments, 2017 - pubs.aip.org
A space-resolved visible spectrometer system has been developed for two-dimensional (2D)
distribution measurements of hydrogen and impurity emission spectra and of plasma flow in …

Spectral diagnostic system for light impurity transport study in J-TEXT Tokamak

XL Zhang, ZF Cheng, XD Lin, HS Mo… - Fusion Engineering and …, 2019 - Elsevier
A light impurity diagnostic system is developed for the J-TEXT tokamak. This diagnostic
system consists of carbon V (227.09 nm), carbon III (464.7 nm) and edge rotation …