# RMATE: A device to test radiation-induced effects under controlled magnetic field and temperature

## TL;DR

This paper introduces RMATE, a novel device that allows simultaneous testing of structural materials under high temperature and magnetic fields during irradiation, crucial for fusion reactor applications.

## Contribution

The study presents the design, development, and performance assessment of RMATE, enabling controlled irradiation experiments with temperature up to 450°C and magnetic fields near 0.6 T.

## Key findings

- Successful development of RMATE device
- Magnetic flux mapping validated by simulations and measurements
- Device supports advanced materials research for fusion reactors

## Abstract

This study shows the development and performance assessment of a novel set-up that enables the research of structural materials for fusion reactors, by making possible simultaneous application of temperature (up to 450$^{\circ}$C) and magnetic field (close to 0.6 T) during irradiation experiments. These aspects become critical as structural materials in fusion reactors are exposed to intense radiation levels under the presence of strong magnetic fields. Moreover, material microstructural could be modified by radiation-induce propagating defects, which are thought to be sensitive to magnetic field. The device has three main components: magnetic closure, sample holder with integrated heater, and radiation shield. It is provided with a thermal shield to prevent other elements of the device to heat up and fail. A mapping of the magnetic flux in the region where sample and heater are located has been modeled by finite elements simulation software and correlated with magnetic measurements