The superconducting (SC) proton linac is proposed in the JAERI/KEK Joint Project for a high-intensity proton accelerator in the energy region from 400 to 600 MeV. Highly stable fields in the SC cavities are required under the dynamic Lorentz force detuning. A new model describing the dynamic Lorentz detuning has been developed and the validity has been confirmed experimentally. The model has be...

Stochastic resetting of active Brownian particles to the line x = 0 subjected a magnetic field (left figure) can direct transport by spatially controlling Lorentz force with no need for structured geometries (right figure).