SAMOP 2021 – wissenschaftliches Programm
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MS: Fachverband Massenspektrometrie
MS 1: Precision Mass Measurements I
MS 1.5: Vortrag
Montag, 20. September 2021, 12:00–12:15, H3
An Accumulation Radio-Frequency Quadruple Cooler-Buncher for the PUMA Offline Ion Source — •Clara Klink1, Frank Wienholtz1, Carina Kanitz2, Stephan Melbrunot2, Markus Kristian Vilen2, and Simon Lechner2 — 1TU Darmstadt, 64289 Darmstadt, Deutschland — 2CERN, 1211 Meyrin, Schweiz
The antiProton Unstable Matter Annihilation (PUMA) experiment plans to utilise antiprotons to further characterise stable as well as radioactive nuclei. Antiprotons will be used to specify the isospin composition of the nuclei by analysing the reaction products of an antiproton-nucleon annihilation. Inter alia, PUMA plans on performing experiments with low-energy antiprotons from the ELENA facility of CERN with a broad range of stable isotopes from an offline ion source to observe their behaviour during antiprotonic annihilation. For a successful operation of PUMA a high event rate with a high-purity ion beam is crucial, to clearly differentiate from background annihilations, thus the offline ion source beamline must meet several requirements to transport and shape the ion beam. The purification of the ion beam is done with a multi-reflection time-of-flight mass spectrometer. For achieving a sufficiently high event rate and prevent the production of secondary particles in the experimental zone, the ion beam will be accumulated, bunched and buffer gas cooled in an RFQ. This talk will give an introduction on the principle of operation for the PUMA RFQ. The requirements for the RFQ will be defined and an overview of the PUMA offline ion source beamline is given.