Roy Alexander "Alex" Tinguely is a 🏷️#physicist and a research scientist at the 📝MIT Plasma Science and Fusion Center, where he is group leader for energetic particle physics within the center's magnetic fusion energy program. His subject is what happens to the fastest particles in a tokamak: how fast ions and alpha particles interact with Alfvén eigenmodes, how a 📝disruption generates 📝runaway electrons, and how both are diagnosed. He holds a PhD in plasma physics from MIT (2019) and works on 📝SPARC and 📝JET.

Tinguely is first author of the 2021 Nuclear Fusion paper modeling the complete prevention of disruption-generated runaway electron beam formation in SPARC using a passive three-dimensional coil (DOI 10.1088/1741-4326/ac31d7), written with V. A. Izzo, D. T. Garnier and 📝Ryan Sweeney among others. The scheme's appeal is that it needs no detection and no trigger — the disrupting plasma drives the coil itself. He is also first author of the 2024 Review of Scientific Instruments paper constructing synthetic measurements of runaway electron 📝synchrotron radiation for SPARC (10.1063/5.0219477), which works out what a camera would see before there is a machine to point it at. Both results are modeled predictions for a tokamak that has not yet operated. He is a co-author of 📝Overview of the Physics Basis for the ARC Fusion Power Plant.