The dependence of confinement on the isotope mass in the core and the edge of AUG and JET-ILW H-mode plasmas

被引：13

作者：

Schneider, P. A. ^{[1
]}

Angioni, C. ^{[1
]}

Frassinetti, L. ^{[2
]}

Horvath, L. ^{[3
]}

Maslov, M. ^{[3
]}

Auriemma, F. ^{[4
,5
]}

Cavedon, M. ^{[1
,6
]}

Challis, C. D. ^{[3
]}

Delabie, E. ^{[7
]}

Dunne, M. G. ^{[1
]}

Climent, J. M. Fontdecaba ^{[3
]}

Hobirk, J. ^{[1
]}

Kappatou, A. ^{[1
]}

Keeling, D. L. ^{[3
]}

Kurzan, B. ^{[1
]}

Lennholm, M. ^{[3
]}

Lomanowski, B. ^{[7
]}

Maggi, C. F. ^{[3
]}

McDermott, R. M. ^{[1
]}

Puetterich, T. ^{[1
]}

Thorman, A. ^{[3
]}

Willensdorfer, M. ^{[1
]}

机构：

[1] Max Planck Inst Plasma Phys, Boltzmannstr 2, D-85748 Garching, Germany

[2] KTH Royal Inst Technol, Tekn Ringen 31, Stockholm, Sweden

[3] United Kingdom Atom Energy Author, Culham Ctr Fus Energy, Culham Sci Ctr, Abingdon OX14 3DB, Oxon, England

[4] Univ Padua, Consorzio RFX CNR, Acciaierie Veneto SpA, Ist Nazl Fis Nucl,ENENA, Padua, Italy

[5] CNR, ISTP, Corso Stati Uniti 4, I-35127 Padua, Italy

[6] Univ Milano Bicocca, Dipartimento Fisica G Occhialini, Milan, Italy

[7] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA

来源：

NUCLEAR FUSION | 2022年 / 62卷 / 02期

基金：

英国工程与自然科学研究理事会;

关键词：

tokamak; heat transport; isotope effect; pedestal stability; quasilinear modelling; INSTABILITIES; TRANSPORT;

D O I：

10.1088/1741-4326/ac3e82

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

Experiments in ASDEX Upgrade (AUG) and JET with the ITER-like wall (JET-ILW) are performed to separate the pedestal and core contributions to confinement in H-modes with different main ion masses. A strong isotope mass dependence in the pedestal is found which is enhanced at high gas puffing. This is because the ELM type changes when going from D to H for matched engineering parameters, which is likely due to differences in the inter ELM transport with isotope mass. The pedestal can be matched in H and D plasmas by varying only the triangularity and keeping the engineering parameters relevant for core transport the same. With matched pedestals Astra/TGLF (Sat1geo) core transport simulations predict the experimental profiles equally well for H and D. These core transport simulations show a negligible mass dependence and no gyro-Bohm scaling is observed. However, to match the experimental observations at medium beta it is required to take the fast-ion dilution and rotation into account. This is not enough for high beta plasmas where for the first time a profile match between H and D plasmas was achieved experimentally. Under these conditions quasilinear modelling with TGLF over predicts the transport in the core of H and D plasmas alike.

引用

页数：11

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