electron collector

Charming looked it over and then remarked: "All we need now is an electron collector."

The electron collector will be deployed once the primary mission, the attitude determination experiment, has been completed.

In electronic vacuum devices such as a cathode ray tube, the anode is the positively charged electron collector.

Higher powered Helix TWTs usually contain beryllium oxide ceramic as both a helix support rod and in some cases, as an electron collector for the TWT because of its special electrical, mechanical, and thermal properties.