SLIDE 1
Increasing longitudinal beam stability through a more stable RF system Kevin Cook Tim Berenc
RF Noise Suppression for the APS Storage Ring
1
LMS-Based Noise Cancellation Scheme
2
RF Source Klystron LLRF Modulator RF Cavities Klystron Power Supply (i.e., Noise Source) Phase Detector Amplitude Detector
LMS Filter
Widrow et. al, “Adaptive Noise Cancelling: Principles & Applications” IEEE Vol. 63, No. 12, Dec. 1975