TY - JOUR
T1 - Padé approximation of the adiabatic electron contribution to the gyrokinetic quasi-neutrality equation in the ORB5 code
AU - Lanti, E.
AU - Dominski, J.
AU - Brunner, S.
AU - McMillan, B. F.
AU - Villard, L.
N1 - Publisher Copyright:
© Published under licence by IOP Publishing Ltd.
PY - 2016/12/5
Y1 - 2016/12/5
N2 - This work aims at completing the implementation of a solver for the quasineutrality equation using a Padé approximation in the global gyrokinetic code ORB5. Initially [Dominski, Ph.D. thesis, 2016], the Pade approximation was only implemented for the kinetic electron model. To enable runs with adiabatic or hybrid electron models while using a Pade approximation to the polarization response, the adiabatic response term of the quasi-neutrality equation must be consistently modified. It is shown that the Pade solver is in good agreement with the arbitrary wavelength solver of ORB5 [Dominski, Ph.D. thesis, 2016]. To perform this verification, the linear dispersion relation of an ITG-TEM transition is computed for both solvers and the linear growth rates and frequencies are compared.
AB - This work aims at completing the implementation of a solver for the quasineutrality equation using a Padé approximation in the global gyrokinetic code ORB5. Initially [Dominski, Ph.D. thesis, 2016], the Pade approximation was only implemented for the kinetic electron model. To enable runs with adiabatic or hybrid electron models while using a Pade approximation to the polarization response, the adiabatic response term of the quasi-neutrality equation must be consistently modified. It is shown that the Pade solver is in good agreement with the arbitrary wavelength solver of ORB5 [Dominski, Ph.D. thesis, 2016]. To perform this verification, the linear dispersion relation of an ITG-TEM transition is computed for both solvers and the linear growth rates and frequencies are compared.
UR - https://www.scopus.com/pages/publications/85009815249
UR - https://www.scopus.com/inward/citedby.url?scp=85009815249&partnerID=8YFLogxK
U2 - 10.1088/1742-6596/775/1/012006
DO - 10.1088/1742-6596/775/1/012006
M3 - Conference article
AN - SCOPUS:85009815249
SN - 1742-6588
VL - 775
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
IS - 1
M1 - 012006
T2 - Joint Varenna-Lausanne International Workshop on the Theory of Fusion Plasmas 2016
Y2 - 29 August 2016 through 2 September 2016
ER -