6 papers
Update on the design of the Columbia Stellarator eXperiment
Antoine Baillod, Avigdor Veksler, Rohan Lopez +4
We present the final configuration chosen to be build for the Columbia Stellarator eXperiment (CSX), a new stellartor experiment at Columbia University. In a recent publication, Ba…
Determining the Validity of Tokamak Perturbed Equilibrium Modeling Using Nonlinear Equilibria
J. Halpern, N. C. Logan, E. Paul +1
The prediction of perturbed equilibrium models for tokamaks with small 3D fields is strongly dependent on which reference frame for axisymmetry is assumed - for example, the toroid…
The shear Alfvén continuum of quasisymmetric stellarators
Elizabeth J. Paul, Abdullah Hyder, Eduardo Rodríguez +2
The shear Alfvén wave (SAW) continuum plays a critical role in the stability of energetic particle-driven Alfvén eigenmodes. We develop a theoretical framework to analyze the SAW c…
Enhancing Stellarator Accessibility through Port Size Optimization
A. Baillod, E. J. Paul, T. Elder +1
Access to the plasma chamber in a stellarator reactor is essential for maintenance and diagnostics. However, the complex geometry of stellarator coils, often characterized by their…
Reactor-scale stellarators with force and torque minimized dipole coils
Alan A. Kaptanoglu, Alexander Wiedman, Jacob Halpern +3
In this work, we utilize new coil objectives for stellarator optimization with autodifferentiation, including pointwise and net coil-coil forces and torques. We use these methods t…
Fast particle trajectories and integrability in quasiaxisymmetric and quasihelical stellarators
Amelia Chambliss, Elizabeth Paul, Stuart Hudson
Even if the magnetic field in a stellarator is integrable, phase-space integrability for energetic particle guiding center trajectories is not guaranteed. Both trapped and passing…