ORNL, Oak Ridge, Tennessee
BINP SB RAS, Novosibirsk
An electron Scanner has been commissioned to non-destructively measure the transverse profiles in the Spallation Neutron Source (SNS) Ring. The SNS Ring is designed to accumulate in the order of 1.6·1014 protons with a typical peak current of over 50 Amps. Because of this high intensity no other profile measuring devices such as wire scanners were installed. The electron scanner is based on measuring the deflection of 50-75kV electrons by the electric field of the proton beam. Two electron guns, one for each plane, with dipole correctors, quadrupoles and deflectors to shape the electron beam have been installed. This paper describes the system and the initial results.
