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Science

muriel_volestrangler

(106,598 posts)

7. The $3bn is for the tunnel and a lower-power electron-positron collider

Reply to vdogg (Reply #4)

Wed Jul 23, 2014, 11:45 AM

Jul 2014

CERN's 27km tunnel also started with a lower-power electron-positron collider - https://en.wikipedia.org/wiki/Large_Electron%E2%80%93Positron_Collider . They then built the LHC in the same tunnel, which uses more massive protons (or lead nuclei, apparently). The LHC will still have larger collision energies than the $3bn Chinese machine - 14TeV compare to 240 GeV=0.24 TeV, according to the Nature article. If they go ahead with a proton collider, they might get up to 70 TeV - but that will cost more.

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The $3bn is for the tunnel and a lower-power electron-positron collider muriel_volestrangler Jul 2014 #7