Wikipedia
Perhapsatron
The Perhapsatron was an early fusion power device based on the pinch concept in the 1950s. Dreamt up by James (Jim) Tuck while working at Los Alamos National Laboratory (LANL), he named the device whimsically on the off chance that it might be able to create fusion reactions.
The first example was built in the winter of 1952/53, and it quickly demonstrated a series of instabilities in the plasma that plagued the pinch concept. A series of modifications followed which attempted to correct these problems, leading to the ultimate "S-4" model. However, none of these proved fruitful, and most work on the pinch concept ended around 1961.