FusionPapers
図版検索AI要約wiki日本の研究装置ジャーナルChatGPTAbout
© 2026 FUSIONPAPERS
About法務情報
トップに戻る

Gyro orbit simulations of neutral beam injection in Wendelstein 7-X

Samuel A. Lazerson, David Kulla, Dirk A. Hartmann, Paul McNeely, Norbert Rust, the W7-X Team2023年Nuclear FusionIF 3出版社

Simulations exploring neutral beam operation in Wendelstein 7-X (W7-X) at reduced magnetic field are performed using a newly implemented gyro orbit model in the BEAMS3D code. Operation at field strengths below the nominal 2.5 T are seen as a path to explore both high beta plasmas and as a means to access magnetic configurations not possible at 2.5 T. As the field strength becomes smaller, the gyro radius for 55 keV fast protons grows from at 2.5 T to at 0.75 T in a device with minor radius bringing into question the applicability of the gyro center approximation. To address this a gyro orbit model was implemented in the BEAMS3D code. Agreement is found between the gyro center and gyro orbit models in a circular cross section tokamak equilibrium at high field. A set of W7-X equilibria are assessed with fixed density and temperature profiles but decreasing magnetic field strength (increasing plasma beta). Neutral beam deposition is found to be mostly unaffected with changes in the core of the plasma associated with the Shafranov-shift. In general good agreement is found between gyro orbit and gyro center simulations at 2.5 T. Both models indicate increasing losses with decreasing magnetic field strength with the gyro orbit losses being higher at all field strengths. Gyro orbit simulations to the first wall of W7-X show a change in loss pattern with decreasing magnetic field strength. A preliminary assessment of losses to fast ion loss detectors are made.

装置

wendelstein-7x高精度(タイトル一致)

wiki

Neutral beamNeutral beam injectionWendelstein
この論文にはまだAI要約がありません。

関連論文

Design and experimental verification of a multi-pass ECRH plasma start-up scenario at a reduced magnetic field of 1.8 T at W7-X

2026Nuclear Fusion

Gyro-average method for global gyrokinetic particle simulation in realistic tokamak geometry

2022Plasma Physics and Controlled Fusion

Magnetic geometry effects on turbulent density fluctuations in Wendelstein 7-X

2026Nuclear Fusion

Progress in GYRO validation studies of DIII-D H-mode plasmas

2012Nuclear Fusion

On the importance of parallel magnetic-field fluctuations for electromagnetic instabilities in STEP

2024Nuclear Fusion

Global hybrid-gyrokinetic simulations of fast-particle effects on Alfvén Eigenmodes in stellarators

2014Nuclear Fusion

Validation studies of gyrofluid and gyrokinetic predictions of transport and turbulence stiffness using the DIII-D tokamak

2013Nuclear Fusion

Time dependent transport simulations of JET H mode plasmas

1999Nuclear Fusion

Advances in comprehensive gyrokinetic simulations of transport in tokamaks

2005Nuclear Fusion

3D ion gyro-orbit heat load predictions for NSTX-U

2022Nuclear Fusion