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Updated: Jan 21, 2026

In Situ Gas Analysis and Fire Characterization of Lithium-Ion Cells During Thermal Runaway Using an Environmental Chamber
Published on: March 31, 2023
Runaway electron imaging spectrometry (REIS) system
F Causa1, M Gospodarczyk2, P Buratti3
1Istituto di Fisica del Plasma, Consiglio Nazionale delle Ricerche, Via R. Cozzi, 53, 20125 Milano, Italy.
Abstract:
A portable Runaway Electron Imaging and Spectrometry System (REIS) was developed in ENEA-Frascati to measure synchrotron radiation spectra from in-flight runaway electrons in tokamaks. The REIS is a wide-angle optical system collecting simultaneously visible and infrared emission spectra using an incoherent bundle of fibers, in a spectral range that spans from 500 nm to 2500 nm, and visible images using a CCD color microcamera at a rate of 25 frames/s. The REIS system is supervised and managed using a dedicated LabVIEW program to acquire data simultaneously from three spectrometers every 20 ms (configurable down to 10 ms). An overview of the REIS architecture and acquisition system and resulting experimental data obtained in FTU are presented and discussed in this paper.
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