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A radially-coupled coaxial fast Faraday cup design was presented in [1] forhigh-intensity non-relativistic proton beams. In this work, we discuss amodification of that design in the context of a relatively lower intensity ionbeam for longitudinal charge profile measurements. Particle-in-cell and timedomain electromagnetic simulations of the new design with a focus on avoidingfield dilution while generating enough signal for relatively lower intensityion beams at the upcoming High Current Injector Programme at IUAC, New Delhi[2,3] is discussed. Profile distortions from secondary electron emission areestimated and strategies to suppress them are discussed.

Study and improvements of a radially coupled coaxial Fast Faraday cup design towards lower intensity beams