Design and test of a high-speed single-particle beam monitor

The paper presents the first test results of a charged-particle solid-state detector with very fast signal response. We used polycrystalline Chemical-Vapor-Deposition (pCVD) diamond as active sensor material and high-bandwidth RF amplifiers to develop a charged-particle detector suitable for high counting rates. The pCVD diamond is segmented with large and small pads for position sensitivity. The detector is intended as a high-speed beam monitor and diagnostics system for proton accelerators in the field of medical ion therapy and high-energy physics experiments.