The Superconducting Separated Orbit Cyclotron Tritron

Variety of Beam Production at the Infn Lns Superconducting Cyclotron

The INFN LNS Superconducting Cyclotron has been operating for almost 20 years. Several beams are currently accelerated and delivered, allowing for a wide variety of experimental activity to be carried out. In addition, clinical activity is regularly accomplished: over 11 years of proton-therapy of the eye pathologies, around 300 patients have been treated. This has stimulated a growing number o...

Hospital Based Superconducting Cyclotron for Neutron Therapy: Medical Physics Perspective

The neutron therapy facility at the Gershenson Radiation Oncology Center, Harper University Hospital in Detroit has been operational since September 1991. The d(48.5)+Be beam is produced in a gantry mounted superconducting cyclotron designed and built at the National Superconducting Cyclotron Laboratory (NSCL). Measurements were performed in order to obtain the physical characteristics of the n...

Design Study of a Superconducting Cyclotron for Heavy Ion Therapy

Majorana fermions in superconducting nanowires without spin-orbit coupling

We study nanowires with proximity-induced s-wave superconducting pairing in an external magnetic field that rotates along the wire. Such a system is equivalent to nanowires with Rashba-type spin-orbit coupling, with strength proportional to the derivative of the field angle. For realistic parameters, we demonstrate that a set of permanent magnets can bring a nearby nanowire into the topological...

Magnetoelectric effects in superconducting nanowires with Rashba spin-orbit coupling.

Recent experiments in semiconductor nanowires with a spin-orbit coupling and proximity-induced superconductivity exhibit signatures of Majorana bound states predicted to exist in the topological phase. In this Letter we predict that these nanowire systems exhibit unconventional magnetoelectric effects showing a sharp crossover behavior at the topological phase transition. We find that magnetic ...