Development of a compact multi-electron detector for in-beam spectroscopy

A compact multi-electron detector system with a magnetic filter and a silicon detector array has been developed for the use for in-beam spectroscopy experiments. The magnetic filter has a different setup from widely used mini-orange spectrometers. The system has good response to angular distribution and the Doppler shift of electrons. A brief overview of this system and preliminary results of off-beam and in-beam experiments are described.