The planet’s next super collider could consume as much energy as a medium-sized city — but the carbon footprints of the various designs being considered might be vastly different
When it comes to selecting the next accelerator, carbon emissions will be as important as cost, says Veronique Boisvert, a particle physicist at Royal Holloway University in London. The authors’ approach is a good first step towards estimating these emissions, she adds.
However, emissions from civil-engineering processes — mostly from producing cement used for the tunnels — are likely to remain difficult to eliminate, she says. There, Cmight have an advantage: at just 8 kilometres long, compared with the FCC’s 90-kilometre circumference, its construction should have a lower carbon footprint.
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