Nondestructive Beam Current Monitor for the 88-inch Cyclotron

Michel Kireeff Covo, Petit-Jean-Genaz, Christine (Ed.), Arduini, Gianluigi (Ed.), Michel, Peter (Ed.), Schaa, Volker RW (Ed.)
A fast current transformer is mounted in the staging line of the Berkeley 88-inch isochronous cyclotron. The measured signal is amplified and connected to the input of a lock-in amplifier. The lock-in amplifier detects the signal vector from the input signal at the RF reference frequency of the cyclotron second harmonic. The magnitude of the signal detected is calibrated against a Faraday cup and shows the beam current leaving the cyclotron.
doi:10.18429/jacow-ipac2014-thpme195 fatcat:k4jy72rkh5ahjclk2mptspvnlq