Beam diagnostics at high-intensity storage rings

Abstract

Beam diagnostics at high‐intensity facilities feature their own special set of problems and characteristics, issues peculiar to high‐intensity storage rings include beam loss, beam halos, extraction efficiency, beam in the gap, clearing electrodes, and beam‐profile measurement. The Los Alamos Proton Storage Ring (PSR) is a nice example of a high‐intensity storage ring. I will discuss in some detail three diagnostic systems currently in use at the PSR: the beam‐loss‐monitor system, the electron‐clearing system, and the beam‐in‐the‐gap monitor. Much of our discussion is inspired by the problems we have encountered and the useful things we have learned while commissioning and developing the PSR. Another inspiration is our work on the next‐generation neutron‐spallation source, also known as the National Center for Neutron Research (NCNR).