Simple, high-sensitive, and non-destructive beam monitor for RI beam facilities

A non-destructive beam current monitor for measuring the AVF cyclotron beam was designed, fabricated, tested and installed into a beam line to evaluate cross-sections rate in nuclear experiment at the CRIB. The monitor comprises a metal-alloy toroidal core, a pick-up coil, a metal box, and a low noise amplifier, and has a high dynamic range of 10nA∼100μA.