Ion temperature measurements in the tokamak scrape-off layer with high temporal resolution

Ion temperature measurements in the tokamak scrape-off layer with high temporal resolution

Bibliographic Details
Parent link:Nuclear Fusion
Vol. 61, No. 3.— 2021.— [036023, 7 p.]
Other Authors: Adamek J., Cipciar D., Devitre A., Horacek J., Cavalier J., Komm M., Krbec J., Tichy M. Milan, Trunec D., Böhm P., Panek R.
Summary:Title screen
We present a uniquely fast (10 μs) ion temperature measurements in the tokamak edge plasma. Our approach is based on the sweeping of a ball-pen probe, where the ion temperature is obtained by fitting the electron branch of the corresponding I-V characteristic. We have performed measurements on the COMPASS tokamak during L-mode discharge. The temperature histograms reveal a non-Gaussian shape with a high-temperature tail peaking at low values. The fitted values of fast I-V measurements can be used to reconstruct (emulate) the slow swept I-V characteristic of a retarding field analyzer. The resulting ion temperature profile is nearly flat and provides a ratio of ion to electron temperature close to 1-2 in the vicinity of the last closed flux surface during L-mode discharges, as observed on other tokamaks.
Режим доступа: по договору с организацией-держателем ресурса
Published: 2021
Subjects:
электронный ресурс
труды учёных ТПУ
plasma
magnetic-confinement fusion
L-mode
ion temperature
плазма
термоядерный синтез
температура
ионы
Online Access:https://doi.org/10.1088/1741-4326/abd41d
Format: Electronic Book Chapter
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=665020

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