Skip to main content
OSTI.GOVU.S. Department of Energy Office of Scientific and Technical Information
U.S. Department of Energy
Office of Scientific and Technical Information
 

Overview of physics results from the ADITYA-U tokamak and future experiments

Journal Article · · Nuclear Fusion
 [1];  [2];  [3];  [4];  [2];  [4];  [2];  [2];  [2];  [5];  [6];  [7];  [8];  [9];  [2];  [2];  [2];  [2];  [10];  [4] more »;  [4];  [4];  [4];  [4];  [2];  [2];  [2];  [4];  [4];  [4];  [4];  [11];  [6];  [4];  [4];  [4];  [4];  [4];  [1];  [4];  [2];  [1];  [2];  [4];  [4];  [4];  [4];  [2];  [4];  [4];  [4];  [4];  [4];  [4];  [4];  [4];  [4];  [4];  [4];  [4];  [2];  [4];  [4];  [2];  [4];  [4];  [4];  [4];  [2];  [2];  [2];  [4];  [12];  [2];  [13];  [2];  [2];  [14];  [4] « less
  1. Institute for Plasma Research, Gandhinagar (India); Nirma University, Ahmedabad (India)
  2. Institute for Plasma Research, Gandhinagar (India); Homi Bhabha National Institute (HBNI), Mumbai (India)
  3. Institute for Plasma Research, Gandhinagar (India); Saurashtra University, Rajkot (India)
  4. Institute for Plasma Research, Gandhinagar (India)
  5. Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ (United States)
  6. Institute for Plasma Research, Gandhinagar (India); Pandit Deendayal Energy University, Gandhinagar (India)
  7. Oak Ridge Associated Universities (ORAU), Oak Ridge, TN (United States)
  8. Univ. of California, Los Angeles, CA (United States)
  9. University of Petroleum and Energy Studies, Dehradun (India)
  10. Institute for Plasma Research, Gandhinagar (India); RK University, Rajkot (India)
  11. Institute for Plasma Research, Gandhinagar (India); ITER-India, Ahmedabad (India). Institute for Plasma Research
  12. Bhabha Atomic Research Centre (BARC), Visakhapatnam (India)
  13. Nirma University, Ahmedabad (India)
  14. Saha Institute of Nuclear Physics, Kolkata (India)
+ Show Author Affiliations
The ADITYA upgrade (ADITYA-U), a medium-sized (R0 = 75 cm, a = 25 cm) conventional tokamak facility in India, has been consistently producing experiments findings by usingcircular and shaped-plasmas. Recognizing the plasma parameters aligning closely with the design parameters of circular limited plasmas, ADITYA-U shifted its focus toward exploring the operational regime for experimentation on saw-tooth and MHD phenomena. Moreover, ADITYA-U has made consistent advancements toward conducting preliminary plasma shaping experiments through the activation of top and bottom divertor coils utilizing hydrogen as well as deuterium fuels. Confinement is improved by a factor of ~1.5 in D2 plasmas when compared to H2 plasmas of ADITYA-U. Further, ADITYA-U operations emphasize preventing disruptions and runaway electrons (REs) to ensure safe operations for future fusion devices. Significant suppression of REs has been achieved in ADITYA-U with the application of pulsed localized vertical magnetic field (LVF) perturbation, thereby establishing the technique's independence from the tokamak device. The successful RE mitigation requires a critical threshold of LVF pulse magnitude, which is approximately 1% of the toroidal magnetic field, and a minimum duration of ~5 ms. Apart from this, several novel findings have been achieved in the ADITYA-U experiments, including the modification of sawtooth duration through gas-puff, the emergence of MHD-induced geodesic acoustic mode-like oscillations, the propagation of fast heat pulses induced by MHD activity, the control of RE dynamics through Gas-puffs, the propagation of pinch-driven cold-pulses, the transport and core accumulations of argon impurities, the mass dependency of plasma toroidal rotation and the detection of 'RICE' scaling, as well as the characterization of edge plasma using wall conditioning methods, such as glow discharge cleaning using a combination of Ar-H2 mixture, localized wall cleaning by electron cyclotron resonant plasma, and the development of machine learning-based disruption predictions, will be discussed in this paper.
Research Organization:
Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC02-09CH11466
OSTI ID:
2441287
Journal Information:
Nuclear Fusion, Journal Name: Nuclear Fusion Journal Issue: 11 Vol. 64; ISSN 0029-5515
Publisher:
IOP ScienceCopyright Statement
Country of Publication:
United States
Language:
English

References (52)

Experimental Results of Core Ion Temperature and Neutral Density Measurements on ADITYA Tokamak using Four Channels Neutral Particle Analyzer journal June 2020
Aditya Upgradation – Equilibrium study journal November 2020
Characterisation of induced vessel current during Mirnov probe calibration experiment in ADITYA-U tokamak journal May 2021
Estimation of vacuum vessel time-constant in ADITYA-U tokamak journal April 2022
Role of pinch in Argon impurity transport in ohmic discharges of Aditya-U Tokamak journal September 2023
Core-ion temperature measurement of the ADITYA tokamak using passive charge exchange neutral particle energy analyzer journal February 2013
Design of a shattered pellet injection system on J-TEXT tokamak journal October 2018
Dynamic evolution of resistive kink mode with electron diamagnetic drift in tokamaks journal April 2019
Predict-first experiments and modeling of perturbative cold pulses in the DIII-D tokamak journal June 2019
Magnetic extraction of runaway electrons from a tokamak plasma journal January 1978
Impurity toroidal rotation profile measurement using upgraded high-resolution visible spectroscopic diagnostic on ADITYA-U tokamak journal June 2021
Energy confinement in JET ohmically heated plasmas journal January 1988
Energy confinement properties of H-mode discharges in the DIII-D tokamak journal February 1989
Scalings for tokamak energy confinement journal October 1990
The isotope effect in ASDEX journal August 1993
Plasma confinement in JET H mode plasmas with H, D, DT and T isotopes journal March 1999
Runaway electrons in magnetic turbulence and runaway current termination in tokamak discharges journal July 2000
Inter-machine comparison of intrinsic toroidal rotation in tokamaks journal October 2007
Sawtooth stability in neutral beam heated plasmas in TEXTOR journal January 2008
A review of zonal flow experiments journal December 2008
Energy confinement of hydrogen and deuterium H-mode plasmas in JT-60U journal October 2012
Novel approaches for mitigating runaway electrons and plasma disruptions in ADITYA tokamak journal May 2015
First demonstration of rapid shutdown using neon shattered pellet injection for thermal quench mitigation on DIII-D journal March 2016
Neutral beam stabilization of sawtooth oscillations in JET journal January 2002
Radiation pattern and impurity transport in argon seeded ELMy H-mode discharges in JET journal August 2002
Zonal flows in plasma—a review journal April 2005
The physics of sawtooth stabilization journal November 2007
Generation and suppression of runaway electrons in disruption mitigation experiments in TEXTOR journal August 2008
Physics of GAM-initiated L–H transition in a tokamak journal November 2016
Isotope effects on transport in LHD journal July 2021
Deep sequence to sequence learning-based prediction of major disruptions in ADITYA tokamak journal September 2021
Modification of argon impurity transport by electron cyclotron heating in KSTAR H-mode plasmas journal February 2017
The impact of rational surfaces on radial heat transport in TJ-II journal March 2017
Overview of recent experimental results from the Aditya tokamak journal June 2017
Observation of multi-channel non-local transport in J-TEXT plasmas journal February 2018
Fast and pervasive heat transport induced by multiple locked modes in DIII-D journal November 2018
Effect of periodic gas-puffs on drift-tearing modes in ADITYA/ADITYA-U tokamak discharges journal February 2020
Generation and dissipation of runaway electrons in ASDEX Upgrade experiments journal July 2020
Geodesic acoustic modes in magnetic confinement devices journal December 2021
Gas-puff induced cold pulse propagation in ADITYA-U tokamak journal August 2021
Physics studies of ADITYA & ADITYA-U tokamak plasmas using spectroscopic diagnostics journal February 2022
Overview of recent experimental results from the ADITYA-U tokamak journal February 2022
The dependence of confinement on the isotope mass in the core and the edge of AUG and JET-ILW H-mode plasmas journal December 2021
Role of magnetohydrodynamic activity in sawtooth induced heat pulse propagation in ADITYA tokamak journal February 2023
Isotope effects on intrinsic rotation in hydrogen, deuterium and tritium plasmas journal March 2023
Runaway electron mitigation with pulsed localized vertical magnetic field perturbation in ADITYA tokamak journal June 2023
Plasma column position measurements using magnetic diagnostics in ADITYA-U tokamak journal September 2021
Suppression of Runaway Electrons by Resonant Magnetic Perturbations in TEXTOR Disruptions journal June 2008
Experimental Measurement of Electron Heat Diffusivity in a Tokamak journal February 1977
Ballistic contributions to heat-pulse propagation in the TFTR tokamak journal December 1990
Sawtooth stabilization by localized electron cyclotron heating in a tokamak plasma journal April 1991
Equilibrium Magnetic Field Requirements during Plasma Initiation and Current Ramp-up Phase in ADITYA/ADITYA-U Tokamak Discharges journal May 2022

Similar Records

Design of vacuum vessel for Aditya Upgrade Tokamak
Conference · Tue Jul 01 00:00:00 EDT 2014 · OSTI ID:22597201
Effect of convective transport in edge and scrape-off-layer plasmas of ADITYA-U tokamak
Journal Article · Fri Dec 05 19:00:00 EST 2025 · Scientific Reports · OSTI ID:3012091
Gyrokinetic simulations of electrostatic microturbulence in ADITYA-U tokamak
Journal Article · Thu Mar 23 20:00:00 EDT 2023 · Nuclear Fusion · OSTI ID:2424682

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY