Core toroidal rotation in impurity seeded H2 & D2 plasma of ADITYA-U tokamak
ORAL
Abstract
Intrinsic toroidal rotation has been observed in the core region of ADITYA-U tokamak without applying any external torque, using Doppler shift spectroscopy. A multi-track visible spectrometer is utilized to obtain the spectral lines of the main impurity ions (C5+ ions) at 529.05nm to measure the Doppler shift. Core toroidal rotation is observed to reverse its direction above a certain density in ADITYA-U plasma [1]. However the edge toroidal rotation is observed to reverse its direction above a certain threshold of plasma current [2]. To understand a better picture of intrinsic toroidal rotation in ADITYA-U tokamak, core and edge toroidal rotation is measured simultaneously in both Hydrogen and Deuterium plasma (separately) at a fixed BT. The effect of impurity seeding is also studied on the core & edge rotation in both Hydrogen as well as Deuterium plasma to understand the underlying Physics behind the intrinsic toroidal rotation in different isotopic plasma (with and without impurity seeding).
References:
[1] G. Shukla et al., Nucl. Fusion 59, 106049 (2019)
[2] Ankit Kumar et alNucl. Fusion 64 086019 (2024)
*Dear Sir, I am final year PhD students, just about to complete my PhD (in less a year). This conference is extremely important for me to make good contacts with the people working in my field and also to find a post-doc position. Unfortunately, my scholarship has now stopped (as I have completed 5 years in PhD) and my funds to participate in international conferences is not sufficient enough to attend APS-2024. I will be thankful, if some funding can be provided to me to cover my travel expenses to attend APS-2024. With RegardsAnkit Kumar
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Publication:Ankit Kumar et al 2024 Nucl. Fusion (DOI: https://doi.org/10.1088/1741-4326/ad4c5a, Accepted Manuscript Title: Effect of impurity seeding on edge toroidal rotation in ADITYA-U tokamak)
