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Title: Collective effects of intense muon bunches in cooling absorbers
Plain: Collider muon bunches carry trillions of particles, and their own fields and the charged gas they create inside absorbers may disturb cooling. How large these effects are is uncertain.
Precise: For bunches of $N \sim 4e12$ muons passing low-$Z$ absorbers (LiH, liquid H2, H2 gas) in a 6D cooling lattice, quantify emittance growth from space charge, wakefields and the ionization plasma created in the absorber, and determine whether they limit cooling at the design intensity.
Settled by: Self-consistent beam-plasma simulations of the full cooling lattice at design intensity, benchmarked with an intense-beam absorber experiment.
Kind: well-posed
Answer type: value
References: (empty)
Literature status: open
Status note: (empty)
Posed since: (empty)