> Regular maintenance work (maybe just sweeping dust off everything or fixing minor leaks etc.) might require complete shutdowns, as the magnetic fields and tem

> Regular maintenance work (maybe just sweeping dust off everything or fixing minor leaks etc.) might require complete shutdowns, as the magnetic fields and temperatures around the accelerator might be dangerous. Confirmed by http://phys.org/news/2016-01-winter-therapy.html http://phys.org/news/2016-01-winter-therapy.html. Also makes sense to have your annual shutdown when electricity prices are likely to be high: I'd guess that heating has a higher impact on these than air conditioning in Switzerland.