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Fully non-inductive second harmonic electron cyclotron plasma ramp-up in the QUEST spherical tokamak
H Idei, T Kariya, T Imai, K Mishra, T Onchi… - Nuclear …, 2017 - iopscience.iop.org
Fully non-inductive second (2nd) harmonic electron cyclotron (EC) plasma current ramp-up
was demonstrated with a newlly developed 28 GHz system in the QUEST spherical …
was demonstrated with a newlly developed 28 GHz system in the QUEST spherical …
Overview of recent progress on steady state operation of all-metal plasma facing wall device QUEST
K Hanada, N Yoshida, M Hasegawa, M Oya… - Nuclear Materials and …, 2021 - Elsevier
QUEST (Q-shu university experiment with steady state spherical tokamak) is a midsize
spherical tokamak capable of steady-state operation, comprising all-metal plasma-facing …
spherical tokamak capable of steady-state operation, comprising all-metal plasma-facing …
Initial results from solenoid-free plasma start-up using transient CHI on QUEST
Initial results from the recently implemented transient coaxial helicity injection (CHI) system
on QUEST are reported. QUEST uses a new CHI electrode configuration in which the CHI …
on QUEST are reported. QUEST uses a new CHI electrode configuration in which the CHI …
Particle balance investigation with the combination of the hydrogen barrier model and rate equations of hydrogen state in long duration discharges on an all-metal …
K Hanada, N Yoshida, M Hasegawa… - Nuclear …, 2019 - iopscience.iop.org
The fuel particle balance during long duration discharges in the Q-shu University
Experiment with steady state spherical tokamak (QUEST) was investigated. QUEST has all …
Experiment with steady state spherical tokamak (QUEST) was investigated. QUEST has all …
Observation of second harmonic electron cyclotron resonance heating and current-drive transition during non-inductive plasma start-up experiment in QUEST
S Kojima, K Hanada, H Idei, T Onchi… - Plasma Physics and …, 2021 - iopscience.iop.org
Noninductive plasma current start-up using 2nd harmonic electron cyclotron resonance
heating (ECRH) with oblique radio frequency (RF) injection is demonstrated in a Q-shu …
heating (ECRH) with oblique radio frequency (RF) injection is demonstrated in a Q-shu …
Electron Bernstein wave conversion of high-field side injected X-modes in QUEST
H Elserafy, K Hanada, S Kojima, T Onchi… - Plasma Physics and …, 2020 - iopscience.iop.org
This paper presents a detailed design of the Q-shu University experimental steady state
spherical tokamak's (QUEST's) high-field side (HFS) injection system for electron Bernstein …
spherical tokamak's (QUEST's) high-field side (HFS) injection system for electron Bernstein …
HFS injection of X-mode for EBW conversion in QUEST
H Elserafy, K Hanada, K Kuroda, H Idei… - Plasma and Fusion …, 2019 - jstage.jst.go.jp
High field side (HFS) injection of eXtra-ordinary X-mode for electron Bernstein wave (EBW)
conversion was conducted in the QUEST tokamak. Radio frequency (RF; 8.2 GHz) power …
conversion was conducted in the QUEST tokamak. Radio frequency (RF; 8.2 GHz) power …
[HTML][HTML] Estimation of fuel particle balance in steady state operation with hydrogen barrier model
K Hanada, N Yoshida, I Takagi, T Hirata… - Nuclear Materials and …, 2019 - Elsevier
This research investigated fuel particle balance during long duration discharge in an all-
metal plasma facing wall (PFW) through intensive QUEST execution. A simple wall model …
metal plasma facing wall (PFW) through intensive QUEST execution. A simple wall model …
Effects of toroidally-distributed-divertor biasing on scrape-off-layer (SOL) current drive, divertor particle flux and fast electron confinement in the QUEST spherical …
K Toi, T Onchi, H Zushi, K Kuroda, H Idei… - Nuclear …, 2023 - iopscience.iop.org
A novel divertor biasing by four biasing plates distributed toroidally (TDDB) on the upper
divertor target plate is applied to low density tokamak plasmas started-up by 28 GHz 2nd …
divertor target plate is applied to low density tokamak plasmas started-up by 28 GHz 2nd …
Improvements to the High-Field-Side Transient CHI System on QUEST
K Kuroda, R Raman, M Hasegawa, T Onchi… - Journal of Fusion …, 2022 - Springer
Transient coaxial helicity injection (CHI) is a promising candidate for solenoid-free plasma
current start-up in a low-aspect-ratio tokamak in support of develo** fully non-inductive …
current start-up in a low-aspect-ratio tokamak in support of develo** fully non-inductive …