PSI
The 2.2 A, 590 MeV primary beam is used to produce ultra-cold neutrons, pions, as well as muons serving the particle and nuclear physics community, and muons and cold neutrons for material science. Three of the secondary beam-lines are available for nuclear and particle physics experiments. The HIPA facility is due for a major upgrade in 2027-2028. As part of this upgrade, a new High-Intensity Muon Beam (HIMB) facility will be installed, increasing the available muon rate by a factor of ten. The facility hosts a number of long running precision muon experiments such as the Mu3e and MEGII experiment, which search for charged-lepton flavour violation and take full advantage of the high-intensity continuous muon beam up to $\rm 10{^8}$ $\mu^+ / s$.
Negative muons are used for precision muonic atom and capture experiments. In addition, shorter test-beam periods are allocated for detector development of upcoming experiments. Typically 15 to 20 so-called beam-times are granted annually, following beam-time requests and presentations at the yearly users’ meeting in February before the international Research Committee at PSI. Multi-year projects first need to go through an approval process supported by a detailed experimental proposal.