Status of oscillating arm wire monitor development

We present the development of a high-speed oscillating-arm wire monitor. Similar devices are in use at PSI’s HIPA facility since the 1970s, however they are significantly slower. The new design maintains the compact longitudinal footprint of the original instrument; a property rarely found among fast wire monitors. First performance tests demonstrated wire velocities of 4 m/s using a stepper motor and 8 m/s with a servo motor. This advancement will allow to use wire scanners to measure the beam profile in the most challenging of the HIPA beamlines, with beam current exceeding 10 mA.