An Absolute Calibrator for DCI Beam Current Monitors

Beam current monitors owing bunch per bunch measurement have no means of absolute calibration, and a d.c. current transformer (D.C.C.T.) is generally used. The practical application of this well-known method is limited by the D.C.C.T. resolution and zero stability. A simple way to improve these characteristics is presented, and first experimental results are given concerning the device worked out for DCI.