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RE: My own research on Steemit - seeking for new phenomena hidden in the properties of the Higgs boson [also in French: a la recherche de phenomenes nouveaux dans les mesures des proprietes du boson de Higgs]
how much time does it take to prepare for an experiment to produce a Higgs boson?
The first discussions about the LHC were in 1986. It was built during 20 years before starting in 2009. It will be operated probably until 2035. That gives you an idea of the order of magnitude...
The particle physics community is actually discussing the next machines, and one option could be a Higgs boson factory (there are actually several options discussed so far, like a larger circular collider to be built either at CERN or in China, or a linear collider that could be built in Japan). For the moment, the physics options of such machines are being identified, the technology to use is being discussed, early-stage R&D is on-going, etc.
We will need to wait a bit before seeing one of these projects approved (if this actually happens). First a community-based decision, and then the politics will have to be convinced... If this works, maybe will the machine be ready in 20 years. Maybe later...
this scale is unimaginable. to provide an outsider's perspective, I'd be more optimist and assume that other technologies evolve and emerge that may help accelerating these developments in physics.
New technologies can emerge, but the R&D will have to be frozen at some point. But the developments necessary to achieve the physics goals will in any case lead to new non-patented inventions. Therefore free for the society :)