Observation of Fast-Ion Axial Bounce Mode Using Dual Neutral Particle Analyzers in C-2W

June 2026 | S. Kamio | HTPD 2026 | Poster

We report direct experimental observation of the fast-ion axial bounce mode (ABM) in C-2W FRC plasmas using dual opposing Neutral Particle Analyzers. Antiphase fast-ion flux oscillations, energy-dependent time-of-flight delays, and multi-energy responses confirm the ABM model…

Overview of C-2W Diagnostic and Experimental Systems Supporting Beam-Driven FRC Plasmas at TAE Technologies

June 2026 | M. Nations | HTPD 2026 | Poster

We present diagnostic systems supporting beam-driven FRC plasmas on C-2W at TAE Technologies, achieving sustained steady-state operation up to 40 ms. Key systems include FIDA, CHERS, Lyman-alpha neutral detection, and a new Fast-Ion Loss Detector, establishing the foundation …

Fast-Ion Axial Bounce Resonance in a Linear Magnetic Fusion Device

May 2026 | S. Karbashewski | Physical Review Letters | Paper

We report observations of an energetic-particle mode (EPM) in a linear plasma device that corresponds to an axial bounce resonance of fast ions sourced from neutral-beam injection (NBI). In our experiment, novel dynamic shaping of a magnetic mirror field reduces the distance …

Verification of an energy-conserving semi-implicit electrostatic particle-in-cell scheme for modeling high-density plasma at scale

May 2026 | R.M. Hedlof (SNL) | Physics of Plasmas | Paper

A verification study of a semi-implicit energy-conserving electrostatic particle-in-cell algorithm is presented. The algorithm relaxes the time-step and mesh-size constraints that require resolution of the plasma period and Debye length associated with traditional explicit momentum-conserving particle-in-cell algorithms

Rapid damping of magnetic turbulence induced by collisional merging process of field-reversed configurations

May 2026 | D. Kobayashi (Nihon Univ.) | Nuclear Fusion | Paper

The damping process of magnetic turbulence induced by the collisional merging of field-reversed configurations (FRCs) was investigated using the FAT-CM device at Nihon University. Two FRC-like plasmoids collided at super-Alfvénic and supersonic speeds.

Increased p-11B fusion reaction rate through fast-ion acceleration by ion cyclotron range of frequencies heating in LHD

February 2026 | S. Kamio | Nuclear Fusion | Paper

Among various advanced fuel cycles, proton-boron-11 (p-11B) fusion has attracted renewed interest as a potentially clean and sustainable fusion energy source.
This aneutronic fusion concept has long been envisioned as an ultimate cleaner fusion reactor scheme…