Physics of Penetration of Resonant Magnetic Perturbations Used for Type I Edge Localized Modes Suppression in Tokamaks

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389021%3A_____%2F09%3A00333528" target="_blank" >RIV/61389021:_____/09:00333528 - isvavai.cz</a>

Výsledek na webu

—

DOI - Digital Object Identifier

—

Jazyk výsledku

angličtina

Název v původním jazyce

Physics of Penetration of Resonant Magnetic Perturbations Used for Type I Edge Localized Modes Suppression in Tokamaks

Popis výsledku v původním jazyce

Non-linear reduced MHD modelling of the toroidally rotating plasma response to resonant magnetic perturbations (RMPs) is presented for DIII-D and ITER-like typical parameter and RMP coils. The non-linear cylindrical reduced MHD code was adapted to take into account toroidal rotation and plasma braking mechanisms such as resonant one and the neoclassical toroidal viscosity (NTV) calculated for low collisionality regimes ('1/?' and '?'). Counter toroidal rotation by NTV is predicted for ITER with the proposed RMP coils in 1/?-limit. Resonant braking is localized near resonant surfaces and is weak compared with NTV in the 1/? regime for typical DIII-D and ITER parameters. Toroidal rotation leads to the effective screening of RMPs that is larger for stronger rotation and lower resistivity, resulting mainly in central islands screening. Non-resonant helical harmonics in RMP spectrum are not influenced by plasma rotation, and hence penetrate and are important in NTV mechanism.

Název v anglickém jazyce

Physics of Penetration of Resonant Magnetic Perturbations Used for Type I Edge Localized Modes Suppression in Tokamaks

Popis výsledku anglicky

Non-linear reduced MHD modelling of the toroidally rotating plasma response to resonant magnetic perturbations (RMPs) is presented for DIII-D and ITER-like typical parameter and RMP coils. The non-linear cylindrical reduced MHD code was adapted to take into account toroidal rotation and plasma braking mechanisms such as resonant one and the neoclassical toroidal viscosity (NTV) calculated for low collisionality regimes ('1/?' and '?'). Counter toroidal rotation by NTV is predicted for ITER with the proposed RMP coils in 1/?-limit. Resonant braking is localized near resonant surfaces and is weak compared with NTV in the 1/? regime for typical DIII-D and ITER parameters. Toroidal rotation leads to the effective screening of RMPs that is larger for stronger rotation and lower resistivity, resulting mainly in central islands screening. Non-resonant helical harmonics in RMP spectrum are not influenced by plasma rotation, and hence penetrate and are important in NTV mechanism.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BL - Fyzika plasmatu a výboje v plynech

OECD FORD obor

—

Projekt

—

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2009

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Nuclear Fusion

ISSN

0029-5515

e-ISSN

—

Svazek periodika

49

Číslo periodika v rámci svazku

8

Stát vydavatele periodika

AT - Rakouská republika

Počet stran výsledku

13

Strana od-do

—

Kód UT WoS článku

000268936800011

EID výsledku v databázi Scopus

—