November 2025

Journal

Application of the portable diagnostic package to the Wisconsin high-temperature-superconducting axisymmetric mirror (WHAM)

By:
Fujii, Keisuke ; Endrizzi, Douglass; Anderson, Jay; Forest, Cary; Pizzo, Jonathan; Qian, Tony; Yu, Mason; Biewer, Theodore M
Journal Name:
AIP Advances
Page Number:
115128-115128
Volume:
15
Issue Number:
11
Publication Date:
November 25, 2025
View DOI Listing:
https://doi.org/10.1063/5.0281806

Abstract

We present an application of the Portable Diagnostic Package (PDP) on the Wisconsin High-temperature-superconducting Axisymmetric Mirror (WHAM), which integrates an optical emission spectroscopy (OES) system and an active Thomson scattering (TS) system. The OES system facilitates a comprehensive impurity line survey and enables flow measurements through the Doppler effect observed on impurity lines. Plasma rotation profiles were successfully derived from doubly charged carbon lines. The TS system enabled the first measurements of the electron temperature in commissioning plasmas on WHAM. Notably, the PDP was installed, commissioned, and used to obtain OES and TS data within ∼6 months from project start, enabled by its designed portability and standardized interfaces. These results demonstrate the PDP’s potential to accelerate diagnostic readiness and advance experimental plasma studies.