102 citations · 205 across the 8 of their papers we have counts for
8 papers
Stellarator optimization for good magnetic surfaces at the same time as quasisymmetry
Matt Landreman, Bharat Medasani, Caoxiang Zhu
A method is demonstrated to optimize a stellarator's geometry to eliminate magnetic islands and achieve other desired physics properties at the same time. For many physics quantiti…
Computation of the Biot-Savart line integral with higher-order convergence using straight segments
Nick McGreivy, Caoxiang Zhu, Lee Gunderson +1
One common approach to computing the magnetic field produced by a filamentary current-carrying coil is to approximate the coil as a series of straight segments. The Biot-Savart fie…
Calculation of permanent magnet arrangements for stellarators: A linear least-squares method
Matt Landreman, Caoxiang Zhu
A problem arising in several engineering areas is to design magnets outside a volume that produce a desired magnetic field inside it. One instance of this problem is stellarator de…
Optimized finite-build stellarator coils using automatic differentiation
Nick McGreivy, Stuart R. Hudson, Caoxiang Zhu
A new stellarator coil design code is introduced that optimizes the position and winding pack orientation of finite-build coils. The new code, called FOCUSADD, performs gradient-ba…
Topology optimization of permanent magnets for stellarators
Caoxiang Zhu, Kenneth Hammond, Thomas Brown +5
We introduce a topology optimization method to design permanent magnets for advanced stellarators. Recent researches show that permanent magnets have great potentials to simplify s…
Designing stellarators using perpendicular permanent magnets
Caoxiang Zhu, Michael Zarnstorff, David Gates +1
We have developed a fast method to design perpendicular permanent magnets for simplifying stellarator coils based on existing codes. Coil complexity is one of the main challenges f…
Identification of important error fields in stellarators using Hessian matrix method
Caoxiang Zhu, David A. Gates, Stuart R. Hudson +4
Error fields are predominantly attributed to inevitable coil imperfections. Controlling error fields during coil fabrication and assembly is crucial for stellarators. Excessively t…
New method to design stellarator coils without the winding surface
Caoxiang Zhu, Stuart R. Hudson, Yuntao Song +1
Finding an easy-to-build coils set has been a critical issue for stellarator design for decades. Conventional approaches assume a toroidal "winding" surface. We'll investigate if t…