Novel two-dimensional position-sensitive detection system

A novel two-dimensional position-sensitive detection system has been designed, built, and tested. It has a relatively short processing time (900 ns) which enables countrates up to 105–106/s. The detector has a ring-shaped geometry. Both polar coordinates can be determined with an accuracy better than 1%. Although intended for use in an ion scattering spectrometer, the system can also be used for detection of other atomic particles or photons.