Modeling of multi-dimensional impurity transport in a realistic tokamak geometry

Fukano, Azusa; Noritake, M.; Hoshino, Kazuo; Yamazaki, Ryo; Hatayama, A.

doi:10.1016/j.jnucmat.2007.01.037

Cited by 19 publications

(20 citation statements)

References 16 publications

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“…In order to investigate the mirror force, we should consider the effect of magnetic field gradient on impurity ions along the axis. In order to resolve the above problem, detailed kinetic simulation by using the IMPGYRO code [10] will be carried out in the future.…”

Section: Discussionmentioning

confidence: 99%

Impact of the Upstream Plasma Parameters on the Spectroscopic Measurement in the GAMMA 10/PDX Divertor Simulation Experiments

Yokodo

Nakashima

Hatayama

et al. 2018

Plasma and Fusion Research

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Detailed results of spectral measurements in the gas injection performed in GAMMA 10/PDX divertor simulation experiments are presented. From the comparison of the emission intensity at the end-cell and plug/barriercell, impurity behavior along the magnetic field line is discussed in GAMMA 10/PDX. The emission intensity of Ar II is decreased due to the increase in the background plasma density and the end loss particle flux, which consequently suppresses the Ar particle transport towards the upstream region. The ECH in the plug-cell (EP-ECH) was applied to investigate the influence of the heating on the emission of injected impurities. Ar II intensity slightly increased EP-ECH. On the other hand, Kr II and Xe II decreased at the plug/barrier-cell.

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Section: Discussionmentioning

confidence: 99%

Impact of the Upstream Plasma Parameters on the Spectroscopic Measurement in the GAMMA 10/PDX Divertor Simulation Experiments

Yokodo

Nakashima

Hatayama

et al. 2018

Plasma and Fusion Research

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“…Tungsten impurity transport have been calculated by Monte-Carlo test particle modeling with IMPGYRO [1], with fixed background plasma for Case A and Case B.…”

Section: Impgyro Calculation Setupsmentioning

confidence: 99%

“…Therefore the self sputtering of tungsten has been neglected. In IMPGYRO [1], Coulomb collision process is modeled by binary collision method [5]. Therefore neoclassical self diffusion process is included in the model [6], while anomalous diffusion of impurity ions have been neglected in the present analysis.…”

Section: Impgyro Calculation Setupsmentioning

confidence: 99%

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Systematic Study of Tungsten Impurity Transport in Representative Regimes of Divertor Plasma

Yamoto

Hoshino

Toma

et al. 2014

Contrib. Plasma Phys.

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The tungsten impurity transport has been studied by IMPGYRO code for a model tokamak geometry of JT-60U tungsten experiments. The background plasma profiles calculated from SOLPS has been used. The density profiles of tungsten are compared between the low background deuterium density (Case A:−3 at core side boundary) and the high background deuterium density (Case B: n D + = 3.0 × 10 19 m −3 at core side boundary). In both cases, flow reversal in the SOL has been observed. The impurity density profile in the SOL is more localized for Case B. These features are possibly explained by the force balance between the thermal force and the friction force.

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“…Since the Larmor radius of high-Z impurity ion is large, not only the guiding center motion, but also the gyro-motion has to be considered. Recently, the code has been extended to be applicable to a realistic tokamak geometry [4]. The code outputs the 2-D impurity density profiles of each charge state for given background plasma profiles calculated by a divertor plasma simulation code, such as the B2.5-EIRENE code [5].…”

Section: Introductionmentioning

confidence: 99%

High‐Z Impurity Transport Code by Monte Carlo Method in a Realistic Tokamak Geometry – IMPGYRO –

Hoshino¹,

Noritake²,

Toma³

et al. 2008

Contrib. Plasma Phys.

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We have developed a three-Dimensional (3-D) Monte Carlo transport code "IMPGYRO" for heavy metal impurities. The code includes most of important processes of heavy metal impurities, such as the Larmor gyration, Coulomb collisions and multi-step ionization/recombination processes. The code outputs the 2-D density profiles of high-Z impurity for a realistic tokamak geometry. In this paper, the IMPGYRO code has been improved to take into account the self-sputtering and the thermal force. The normalized density of impurities in the divertor region for the power detached case is larger than that for the attached case. The balance between the friction force and the thermal force possibly explain the tendency. The IMPGYRO code directly solves the 3-D equation of motion for impurity particles. It is possible to properly calculate the incident angle to the wall for each impurity particle. The incident angle calculated by the IMPGYRO is widely distributed around the incident angle of a magnetic line of force. The sputtering yield greatly depends on the incident angle, especially in the angle range that the incident angle of tungsten is distributed. Therefore, the IMPGYRO code which properly calculates the incident angle is a useful tool to evaluate the angular distribution of incident particles and the resultant amount of the self-sputtered impurity.

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Modeling of multi-dimensional impurity transport in a realistic tokamak geometry

Cited by 19 publications

References 16 publications

Impact of the Upstream Plasma Parameters on the Spectroscopic Measurement in the GAMMA 10/PDX Divertor Simulation Experiments

Impact of the Upstream Plasma Parameters on the Spectroscopic Measurement in the GAMMA 10/PDX Divertor Simulation Experiments

Systematic Study of Tungsten Impurity Transport in Representative Regimes of Divertor Plasma

High‐Z Impurity Transport Code by Monte Carlo Method in a Realistic Tokamak Geometry – IMPGYRO –

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