TWT definitions

Twt

1) Traveling wave tube
Found on https://www.crosswordclues.com/clue/twt

Travelling Wave Tube. TWT's are the final amplifiers for the stochastic cooling kickers. The Debuncher tubes can be found in the tunnel above the Debuncher kicker tanks. Accumulator TWT's are enclosed in racks in AP30 adjacent to the TWT power supplies. - Pbar Rookiebook
Found on http://www-bdnew.fnal.gov/operations/accgloss/gloss.html#A

TWT

Traveling Wave Tube, downlink power amplifier in a spacecraft telecommunications subsystem, the final stage of amplification for downlink (same unit as TWTA).
Found on http://www.encyclo.co.uk/visitor-contributions.php