Recent experiments with the European 1MW, 170GHz industrial CW and short-pulse gyrotrons for ITER

•Status of the experiments with the EU 170 GHz, 1 MW CW industrial prototype gyrotron for ITER.•Possible upgrades of the EU 170 GHz, 1 MW SP prototype gyrotron for the enhancement of the tube’s efficiency.•First experimental results with a fully metallic beam tunnel.