Experimental evaluation demonstrates off-resonance particle detection without cooling in a cryogenic Penning trap, suggesting new methods to tune traps using large ion ensembles.
We present a non-destructive electronic detector for stored charged particles in a Penning trap that uses a symmetric electrode arrangement for signal pickup and a resonator without tap. This system has advantageous off-resonance features which are demonstrated by means of detection and cooling measurements with highly charged ions in a cryogenic Penning trap. In particular, it allows for particle detection across a wide range of frequencies that is not concomitant with cooling and offers a novel way to tune a trap with the help of non-destructive measurements on large particle ensembles.
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Ringleb et al. (2024) studied this question.
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