Go to http://directory.web.cern.ch/d... Click on ATLAS and CMS, and find the directory of institutions. China is well represented on both. You may also scan the lists of 3000+ collaborators each, of course. China is also represented in detector collaborations at many other labs worldwide, including mine.
When I last checked the price for a ROXIE license from CERN was 2500 Euros, SC magnet design software incorporating all they learned about magnetics and mechanics.
I was involved in the SSC magnet project 25 years ago. Most of the difference between the SSC and LHC magnets is 4.5K planned operation of the former and 2K operation of the latter. Had LHC chosen to develop NbTiTa conductor they might have gotten another 15% in energy capability. This is old technology.
I spent two years working on Nb3Sn wire and tape magnets before my SSC work. At one point I hoped ITER would move along fast enough to push Nb3Sn magnet development for accelerators. Conductor yes, magnet technology not in time. Since China has great ceramic expertise, they may do better than Western metal-bashers.