Isotope impact on Alfvén eigenmodes and fast ion transport in DIII-D

Autor: M.A. Van Zeeland, E. Bass, X.D. Du, W.W. Heidbrink, C. Chrystal, C. Crocker, G. DeGrandchamp, S. Haskey, D. Liu, J. Gonzalez-Martin, K.E. Thome, G. Yu, Y. Zhu

Publikováno v: Nuclear Fusion, Vol 64, Iss 5, p 056033 (2024)

Measurements of beam driven Alfvén Eigenmode (AE) activity in matched deuterium (D) and hydrogen (H) DIII-D plasmas show a dramatic difference in unstable mode activity and fast ion transport for a given injected beam power. The dependence of the un

Externí odkaz: https://doaj.org/article/466a1ba16e6b46d2adb6abe92b8170a9

Role of electrostatic perturbation on kinetic resistive wall mode with application to spherical tokamak

Autor: Yueqiang Liu, D.L. Keeling, A. Kirk, L. Kogan, J.W. Berkery, X.D. Du

Publikováno v: Nuclear Fusion, Vol 64, Iss 6, p 066037 (2024)

A more complete non-perturbative magnetohydrodynamic (MHD)-kinetic hybrid formulation is developed by including the perturbed electrostatic potential δφ in the particle Lagrangian. The fluid-like counter-parts of the hybrid equations, in the Chew-G

Externí odkaz: https://doaj.org/article/f347cfe7711742cebb77742a535db911

Parametric study of Alfvénic instabilities driven by runaway electrons during the current quench in DIII-D

Autor: A. Lvovskiy, C. Paz-Soldan, N.W. Eidietis, A. Dal Molin, G.H. DeGrandchamp, E.M. Hollmann, J.B. Lestz, C. Liu, M. Nocente, D. Shiraki, X.D. Du

Publikováno v: Nuclear Fusion, Vol 63, Iss 4, p 046011 (2023)

To avoid or mitigate runaway electron (RE) beams in ITER, RE-driven instabilities are actively studied as a complimentary technique to massive material injection. In this work we report experimental dependencies of Alfvénic instabilities driven by R

Externí odkaz: https://doaj.org/article/194db108a47245d49d5b62f2c3031f7b

Modelling the Alfvén eigenmode induced fast-ion flow measured by an imaging neutral particle analyzer

Autor: J. Gonzalez-Martin, X.D. Du, W.W. Heidbrink, M.A. Van Zeeland, K. Särkimäki, A. Snicker, X. Wang, Y. Todo

Publikováno v: Gonzalez-Martin, J, Du, X D, Heidbrink, W W, Zeeland, M A V, Särkimäki, K, Snicker, A, Wang, X & Todo, Y 2022, ' Modelling the Alfvén eigenmode induced fast-ion flow measured by an imaging neutral particle analyzer ', Nuclear Fusion, vol. 62, no. 11, 112003 . https://doi.org/10.1088/1741-4326/ac7406
J. Gonzalez-Martin et al 2022 Nucl. Fusion 62 112003
Nuclear Fusion

Funding Information: This work is supported by US DOE Contracts DE-SC0020337, DE-AC05-00OR22725, DE-FC02-04ER54698, DE-AC02-09CH11466 and DE-SC0015878. This research used resources of the National Energy Research Scientific Computing Center (NERSC),

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::722edd4304ce15a92a2c4e7ebb9aa136
https://cris.vtt.fi/en/publications/34b09cc2-3efb-4882-b2c0-7ca4b5736f85

Energetic particle-induced geodesic acoustic modes on DIII-D

Autor: D.J. Lin, W.W. Heidbrink, N.A. Crocker, X.D. Du, R. Nazikian, M.A. Van Zeeland, K. Barada

Publikováno v: Nuclear Fusion. 62:112010

Various properties of the energetic particle-induced geodesic acoustic mode (EGAM) are explored in this large database analysis of DIII-D experimental data. EGAMs are n = 0 modes with m = 0 electrostatic potential fluctuations (where n/m = toroidal/p

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5548008a8ba1525e070ded5ccca2f272
https://doi.org/10.1088/1741-4326/ac8be3