Six-dimensional ionization cooling of muons
Muons live only two microseconds, so a muon beam must be shrunk very fast by passing it through matter that slows it down and then re-accelerating it. Doing this in all six position and momentum directions down to collider size has never been done.
Why it matters
Six-dimensional cooling is the main unproven step toward a multi-TeV muon collider.
Review
MICE collaboration, Demonstration of cooling by the Muon Ionization Cooling Experiment, Nature, 2020. https://doi.org/10.1038/s41586-020-1958-9 reference checked
See also
- Special case of Cooling hadron, ion and muon beams
Timestamp record
- Signed record
- cf06ea9df973…
- Public log
- Entry 68, in checkpoint 2,123
- In the log by
- Block 969,698, 2026-10-03
This text was in the PubPhys log by that date. The date says nothing about when the problem was first posed.