SAMOP 2021 – scientific programme

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MS: Fachverband Massenspektrometrie

MS 1: Precision Mass Measurements I

MS 1.7: Talk

Monday, September 20, 2021, 12:30–12:45, H3

Development and Characterization of a Multi-Reflection Time-of-Flight Mass Separator (MR-ToF MS) for the Offline Ion Source of PUMA — •Moritz Schlaich and Frank Wienholtz — TU Darmstadt, Darmstadt, Deutschland

The antiProton Unstable Matter Annihilation (PUMA) project aims at investigating the nucleon composition in the matter density tail of short-lived as well as stable isotopes by studying antiproton-nucleon annihilation processes. For this purpose, low-energy antiprotons provided by the Extra Low Energy Antiproton (ELENA) facility at CERN will be trapped together with the ions under investigation. While the unstable ions will be supplied by the Isotope mass Separator On-Line DEvice (ISOLDE) at CERN, the stable ions are taken from an offline ion source that should be able to provide a cooled and bunched as well as isotopically pure ion beam. It is used by means of comparison with known isotopes to benchmark the antiproton nuclear annihilation process as well as for development and reference measurements at ELENA. The ion source contains a radio-frequency quadrupole cooler-buncher for ion accumulation and bunching. To purify the beam, an MR-ToF MS will be used. The talk will give an overview of the working principle and the design of the MR-ToF MS for the PUMA offline ion source.