An internal microparticle target for a storage ring with electron cooling

Abstract

The use of microparticles for internal targets in storage rings is investigated. The design and construction of a specific microparticle target are described in detail. In the scheme used here, the particulate material is suspended in a carrier gas and accelerated in the flow of the gas through a capillary. The resulting microparticle beam is crossed with the stored ion beam. The target has been tested in a stored, cooled proton beam at the Indiana Cooler. Target thicknesses achieved range from 3×10 13 to 2×10 15 atoms/cm 2.