TY - CPAPER
AU - Liu, Z.
AU - Crisp, J.L.
AU - Lidia, S.M.
TI - AC Coupling Studies and Circuit Model for Loss Monitor Ring
J2 - Proc. of IBIC2014
AB - As a follow-up study to the initial design of FRIB Loss Monitor Ring (previously named Halo Monitor Ring [1]), we present recent results of coupling studies between the FRIB CW beam and the Loss Monitor Ring (LMR). While a ~33 kHz low-pass filter was proposed to attenuate high-frequency AC-coupled signals [1,2], the LMR current signal may still contain low frequency signals induced by the un-intercepted beam, for example, by the 50μs beam notch that repeats every 10ms. We use CST Microwave Studio to simulate the AC response of a Gaussian source signal and benchmarked it to analytical model. A circuit model for beam-notch-induced AC signal is deduced and should put a ~33pA (peak) bipolar pulse on the LMR at 100Hz repetition rate. Although its amplitude falls into our tolerable region, we could consider an extended background integration to eliminate this effect.
PB - JACoW
CY - Geneva, Switzerland
SP - 455
EP - 458
KW - niobium
KW - background
KW - ion
KW - coupling
KW - simulation
DA - 2014/10
PY - 2014
SN - 978-3-95450-141-0
UR - http://jacow.org/IBIC2014/papers/tupd21.pdf
ER -