Sceptre
... that although it was originally designed as a test machine, Sceptre was turned into a fusion reactor when ZETA apparently produced fusion?
... that although it was originally designed as a test machine, <b id="mwDaU"><a href="./Sceptre_(fusion_reactor)" id="mwDaY" rel="mw:WikiLink" title="Sceptre (fusion reactor)">Sceptre</a></b> was turned into a <a class="mw-redirect" href="./Fusion_reactor" id="mwDac" rel="mw:WikiLink" title="Fusion reactor">fusion reactor</a> when <a class="mw-redirect" href="./ZETA" id="mwDag" rel="mw:WikiLink" title="ZETA">ZETA</a> apparently produced fusion?