Characteristics of SMBI fueling with laval nozzle in GAMMA 10 based on experimental and simulation results

Islam, Md. Shahinul; Nakashima, Y.; Kobayashi, S.; Nishino, Norikazu; Hosoi, K.; Ichimura, Kazuya; Fukui, K.; Shimizu, Kazuya; Ohuchi, M.; Arai, M.; Yokodo, Takayuki; Lee, G.; Yoshikawa, Masayuki; Kohagura, J.; Hirata, M.; Ikezoe, Ryuya; Ichimura, M.; Sakamoto, M.; Imai, T.

doi:10.1063/1.4964174

Cited by 3 publications

(1 citation statement)

References 12 publications

(14 reference statements)

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“…Because SMBI has a higher fueling efficiency than GP under different regimes, it could assume the role of GP in fusion devices. Because of its good performance and further optimization in the future (Yao et al 2004(Yao et al , 2007Pegourie et al 2003;Zheng et al 2013;Lang et al 2005;Soukhanovskii et al 2004;Takenaga et al 2009;Kim et al 2013;Murakami et al 2012;Mizuuchi et al 2010;Xiao et al 2014aXiao et al , 2021Yao and Baldzuhn 1933;Tanna et al 2019;Islam et al 2016), SMBI might play a pivotal Fig. 11 Fueling efficiencies of the SMBI system and GP in different plasma discharge regimes (Yuan et al 2018) role under a variety of conditions for future fusion devices, such as the start-up phase and pellet-free injection of helium discharge.…”

Section: Smbi Fueling Efficiency In Different Confinement Regimesmentioning

confidence: 99%

A review of supersonic molecular beam injection for plasma fueling and physical studies in magnetic fusion devices

Xiao

Zhong

Duan

et al. 2022

Rev. Mod. Plasma Phys.

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In magnetic confinement fusion devices, supersonic molecular beam injection (SMBI) is commonly used as a fueling method, which has also performed well in physical studies since it was first proposed on the HL-1 tokamak by Southwestern Institute of Physics. This study presents the development of the SMBI technique since its first use in fusion experimental devices and reviews the progress on the investigation of plasma physics using the SMBI. In addition, this study further discusses the potential applications of the SMBI technique on future fusion devices.

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Section: Smbi Fueling Efficiency In Different Confinement Regimesmentioning

confidence: 99%

A review of supersonic molecular beam injection for plasma fueling and physical studies in magnetic fusion devices

Xiao

Zhong

Duan

et al. 2022

Rev. Mod. Plasma Phys.

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Study of Plasma Behavior during ECRH Injection in the GAMMA 10 SMBI Experiments

Islam

Nakashima

Kobayashi

et al. 2018

J. Phys.: Conf. Ser.

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Sensitivity Check of Background Plasma Parameter during SMBI in the GAMMA 10 Central-Cell by 3-D Monte-Carlo Simulations

Islam

Kobayashi

Nishino

et al. 2019

Plasma and Fusion Research

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The gas fueling by supersonic molecular beam injection (SMBI) has been carried out in the world largest tandem mirror device GAMMA 10 and higher plasma density has been achieved compared with conventional gas-puffing. Three-dimensional Monte-Carlo code DEGAS is applied to GAMMA 10 and the spatial distribution of neutral particle density during SMBI is investigated. σ div is introduced as divergence angle index of the initial particle to simulate the molecular beam injected by SMBI. It is defined to be unity in the case of cosine distribution of the angular profile of launched particles. It is found that the particles are suppressed and localized in the injection point according to the reduction of divergence angle index, σ div and well explained the GAMMA 10 SMBI experimental results at divergence angle index, σ div = 0.33. In this paper the simulation is carried out in the different profiles of electron temperature in order to check the sensitivity of the background plasma parameter. The simulation results indicate that the penetration depth depended on the background plasma parameter, electron temperature.

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Characteristics of SMBI fueling with laval nozzle in GAMMA 10 based on experimental and simulation results

Cited by 3 publications

References 12 publications

A review of supersonic molecular beam injection for plasma fueling and physical studies in magnetic fusion devices

A review of supersonic molecular beam injection for plasma fueling and physical studies in magnetic fusion devices

Study of Plasma Behavior during ECRH Injection in the GAMMA 10 SMBI Experiments

Sensitivity Check of Background Plasma Parameter during SMBI in the GAMMA 10 Central-Cell by 3-D Monte-Carlo Simulations

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