Skip to main content
Return to top

Jacob Halpern

Headshot of Jacob Halpern
Program Year:
4
University:
Columbia University
Field of Study:
Plasma Physics
Advisor:
Carlos Paz-Soldan
Degree(s):
B.S. Nuclear Engineering, Purdue University, 2023

Practicum Experience(s)

Los Alamos National Laboratory (2025)

Practicum Supervisor(s):
Fan
Guo
Practicum Title:
Particle Acceleration During Magnetic Reconnection with Coulomb Collisions

Annual Program Review Abstracts

Fellow Poster
: DOE CSGF 2026: Jacob Halpern — Fellow Poster (
2026
)
Fellow Poster
: Initial Coil Configurationss for the Columbia REconfigurable eXperiment (C-REX): A Hybrid Tokamak-Stellarator (
2024
)

Publications

First author:
J. M. Halpern, A. M. Darr, N. R. Sree Harsha, and A. L. Garner, "A coordinate system invariant formulation for space-charge limited current with nonzero injection velocity," Plasma Sources Science and Technology 31, 095002 (2022)

J. M. Halpern, N. R. Sree Harsha, A. M. Darr, and A. L. Garner, "Space-charge-limited current for nonplanar relativistic diodes with nonzero monoenergetic initial velocity using point transformations," Phys. Plasmas 32, 012106 (2025)

Halpern, J., Logan, N. C., Paul, E., & Paz-Soldan, C. (2025). Determining the validity of tokamak perturbed equilibrium modeling using nonlinear equilibria. Nuclear Fusion, 65(10), 106028

Halpern, J., Haque, M., Paul, E., Paz-Soldan, C., Banerjee, R., Angles, T., Sheehan, F., & Stewart, I. (2026). Feasibility of a Flexible, Hybrid Tokamak-Stellarator Experiment using an Axisymmetric Dipole Coil Array (arXiv:2606.13326). arXiv. (submitted to Nuclear Fusion)

Coauthored:
N. R. Sree Harsha, J. M. Halpern, A. M. Darr, and A. L. Garner, "Space-charge-limited current density for nonplanar diodes with monoenergetic emission using Lie-point symmetries," Physical Review E 106, L063201 (2022)

A. Kaptanoglu, A. Wiedman, J. Halpern, S. Hurwitz, E. J. Paul and M. Landreman, "Reactor-scale stellarators with force and torque minimized dipole coils", Nucl. Fusion 65 046029

Baillod, A., Paul, E. J., Elder, T., & Halpern, J. M. (2025). Enhancing stellarator accessibility through port size optimization. Nuclear Fusion, 65(8), 086040

Munaretto, S., et. al. (2026). Spherical tokamak physics research in preparation for the operation of NSTX-U. Nuclear Fusion, 66(3), 035001. https://doi.org/10.1088/1741-4326/ae38f6

Logan, N. C., Myers, C. E., Sweeney, R., Paz-Soldan, C., Pharr, M., Leuthold, N., Nickerson, M., Halpern, J., & Stewart, I. (2026, January 18). SPARC Tokamak Error Field Expectations and Physics-Based Correction Coil Design. arXiv.Org. https://arxiv.org/abs/2601.12469v1

Collaboration, T. C., et. al. (2026). Compact Experimental Negative TriAngUlarity Reactor (CENTAUR): A design study for a compact, affordable breakeven tokamak (arXiv:2605.27549). arXiv. https://doi.org/10.48550/arXiv.2605.27549