INFN/LNS, Catania, Italy
Scientists of Massachusetts Institute of Technology (MIT) proposed a new approach to search for CP violation in the neutrino sector *. They proposed to use high-power proton accelerators able to deliver a proton beam whit energy 800 MeV, 1.5 MW power and duty cycle of 20% (100 μs beam on, 400 μs beam off). In the past, a layout for a similar accelerator complex to get a proton beam with 10MW of power was proposed by the LNS Accelerator Team **. This previous machines' proposal is now updated to meet the MIT requirements. It consists in a two cascade cyclotron complex. The injector cyclotron, is a four sector machine, which accelerates a beam of H2+ up to energy of 35 MeV/n. The extraction radius is set around 130 cm and the energy gain is fixed at 1.1 MeV/turn, to obtain a turn separation of about 11 mm and then to make very efficient the extraction by the electrostatic deflector. The beam is then injected inside a 8 sectors Superconducting Cyclotron Ring. The energy gain is set at about 3 MeV/turn to reduce the number of turns inside the Ring cyclotron. The beam is extracted by the stripper method. The main characteristics and features of the machines will be presented.
* J. M. Conrad and M. H. Shaevitz, "Multiple Cyclotron Method to Search for CP violation in the Neutrino Sector", Phys. Rev.Lett. 104:141802, 2010
** L. Calabretta et Al., EPAC(2000),pp.918
