What question did this study set out to answer?

The aim is to develop a non-invasive device for measuring ion beam current intensity using TMR sensors.

January 22, 2026Open Access

Development of a novel DC current monitor device, based on tunnelling magnetoresistive sensors, for ion beam current measurement

CMCarmelo MannaIstituto Nazionale di Fisica Nucleare, Laboratori Nazionali del Sud

Key Points

The aim is to develop a non-invasive device for measuring ion beam current intensity using TMR sensors.
Designed a DC Current Monitor device using Tunnelling MagnetoResistive sensors.
Evaluated the device's static response and frequency-domain behavior.
Conducted performance assessments to ensure reliability for ion beam monitoring.
The DCCM device successfully measures ion beam current without intercepting it.
Demonstrated linear static response under various conditions.
Showed effective frequency-domain performance for ion beam applications.

Abstract

In this work, the development of a non-invasive DC Current Monitor device (DCCM), based on Tunnelling MagnetoResistive (TMR) sensors, is presented. The device is primarily intended for measuring the current intensity of an ion beam without the need of intercepting it (therefore not altering its characteristics), making it suitable for online current monitoring. Details are given about the design of the device and its performance assessment, namely the linearity of its static response and its frequency-domain behavior.

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