Nondestructive Beam Current Monitor for the 88-inch Cyclotron release_k4jy72rkh5ahjclk2mptspvnlq

by Michel Kireeff Covo, Petit-Jean-Genaz, Christine (Ed.), Arduini, Gianluigi (Ed.), Michel, Peter (Ed.), Volker RW Schaa

Published by JACoW, Geneva, Switzerland.

2014   Volume IPAC2014, Germany


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.
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