87 citations · 1.2k across the 60 of their papers we have counts for
6 papers · 1 filter
Analytic fluid theory of beam spiraling in high-intensity cyclotrons
Antoine J. Cerfon, Jeffrey P. Freidberg, Felix I. Parra +1
Using a two-dimensional fluid description, we investigate the nonlinear radial-longitudinal dynamics of intense beams in storage rings and cyclotrons. With a multiscale analysis se…
Experimental Signatures of Critically Balanced Turbulence in MAST
Y. -c. Ghim, A. A. Schekochihin, A. R. Field +8
Beam Emission Spectroscopy (BES) measurements of ion-scale density fluctuations in the MAST tokamak are used to show that the turbulence correlation time, the drift time associated…
Turbulent transport and heating of trace heavy ions in hot, magnetized plasmas
M. Barnes, F. I. Parra, W. Dorland
Scaling laws for the transport and heating of trace heavy ions in low-frequency, magnetized plasma turbulence are derived and compared with direct numerical simulations. The predic…
Perpendicular momentum injection by lower hybrid wave in a tokamak
Jungpyo Lee, Felix I. Parra, Ron R. Parker +1
The injection of lower hybrid waves for current drive into a tokamak affects the profile of intrinsic rotation. In this article, the momentum deposition by the lower hybrid wave on…
Long-wavelength limit of gyrokinetics in a turbulent tokamak and its intrinsic ambipolarity
Ivan Calvo, Felix I. Parra
Recently, the electrostatic gyrokinetic Hamiltonian and change of coordinates have been computed to order in general magnetic geometry. Here is the gyrokinetic expansion…
Intrinsic rotation with gyrokinetic models
Felix I. Parra, Michael Barnes, Ivan Calvo +1
The generation of intrinsic rotation by turbulence and neoclassical effects in tokamaks is considered. To obtain the complex dependences observed in experiments, it is necessary to…