Further progress has been achieved in the development of the Ion Cyclotron Resonance Heating (ICRH) system for DTT - Divertor Tokamak Test. The ICRH system will play a central role in plasma heating, delivering megawatt-level power through radio-frequency (RF) waves.

In December 2025, indeed, factory acceptance tests were completed on the final three stages (out of five) of the RF combiner of one of the generators planned for DTT, at the COM-TECH facility. This step contributes to the completion of the RF power generation and combining system that will supply energy to the plasma.

Each generator will operate at a nominal power of 1.2 MW in the 60–90 MHz frequency range. The generators are being developed by the consortium formed by SyES Srl and OCEM Power Electronics, focused on the development of fully solid-state, high-power RF technologies for fusion research.