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Methods for characterizing rare isotope beams at the REX/HIE-ISOLDE Linear Accelerator

Abstract:

The complete characterization of high-energy Radioactive Ion Beams delivered to experimental stations is essential to the analysis of the underlying phenomenology studied. This includes insights into the purity of the beam and the beam properties in the transverse and longitudinal phase spaces. The challenge is to adapt the existing techniques that rely on intense beams to rare isotope beams encountered at the ISOLDE facility, with intensities typically below a million particles per second.

In this seminar, we first introduce studies of the REX Electron Beam Ion Source (REXEBIS), aiming to optimize the charge-breeding performances. The ion beams extracted from REXEBIS are characterized with single-ion detection capability in terms of intensity, purity and axial energy distribution. In a second step, we show and benchmark new methodologies for measuring the transverse and longitudinal properties of post-accelerated ions beams with sub-femto Ampere currents.