1
r accelerator than the one we built several years
ago
, in fact about ten times the size of the original one. And the reason
2
, is very different from what it was twenty years
ago
— different in many respects : CERN, for example, was a highly origin
3
ly original and somewhat daring idea twenty years
ago
, when it was discussed by MM. Denis de Rougemont, Pierre Auger and ot