Description
Begin drafting discussions on the future collider landscape (question 3):
a) Which is the preferred next major/flagship collider project for CERN?
b) What are the most important elements in the response to 3a)?
i) Physics potential
ii) Long-term perspective
iii) Financial and human resources: requirements and effect on other projects
iv) Timing
v) Careers and training
vi) Sustainability
c) Should CERN/Europe proceed with the preferred option set out in 3a) or should alternative options be considered:
i) if Japan proceeds with the ILC in a timely way?
ii) if China proceeds with the CEPC on the announced timescale?
iii) if the US proceeds with a muon collider?
iv) if there are major new (unexpected) results from the HL-LHC or other HEP experiments?
d) Beyond the preferred option in 3a), what other accelerator R&D topics (e.g. highfield magnets, RF technology, alternative accelerators/colliders) should be pursued in parallel?
e) What is the prioritised list of alternative options if the preferred option set out in 3a) is not feasible (due to cost, timing, international developments, or for other reasons)?
f) What are the most important elements in the response to 3e)? (The set of considerations in 3b should be used).
