A multi-TeV muon collider is a unique discovery machine and the best precision tool to fully study the Higgs potential.
Muons as point-like particle uses all the energy in the collision but suffer much less synchrotron radiation compared to electrons. Therefore a very high energy circular machine with a reasonable size is possible, allowing many interactions with the same accelerated beam, exploiting much more efficiently the plug-power. This criterion, will be critical for a multi-TeV machine in an energy-aware world.
However, the need for high luminosity faces technical challenges which arise from the short muon lifetime at rest and the difficulty of producing large numbers of muons in bunches with small emittance. Addressing these challenges requires the development of innovative concepts and demanding technologies.
In the current process to update the European Strategy for Particle Physics a timeline to develop such a project was proposed, both for the machine and the experiment.
The on-going international effort could be the seed for a future collaboration to address the list of critical key activities, required to timely start a devoted R&D program.
Past efforts, new ideas and synergies on studies for enabling technologies will be discussed.
