Erlangen 2022 – wissenschaftliches Programm

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MS: Fachverband Massenspektrometrie

MS 2: Mass Spectrometry Methods

MS 2.6: Vortrag

Montag, 14. März 2022, 18:00–18:15, MS-H9

The PUMA offline ion source for high-intensity, purified ion bunches — •Clara Klink, Alexandre Obertelli, Frank Wienholtz, and Moritz Schlaich — TU Darmstadt, IKP, Darmstadt, Deutschland

The antiProton Unstable Matter Annihilation (PUMA) experiment aims at investigating the nucleonic composition in the tail of the nuclear density distribution of stable and exotic nuclei using antiprotons. The combined charge of the reaction products, which originate from the annihilation of the antiproton with the nucleons on the nucleus' surface, will allow for a determination of neutron and proton densities. 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. The beamline, which transports the stable ions to the experimental site of PUMA, must meet several requirements to reliably forward the beam and shape it according to our needs. The ions are mass-separated with a multi-reflection time-of-flight mass spectrometer and then accumulated, bunched and cooled with a buffer gas in a linear Paul trap. Strict vacuum requirements due to the attached antiproton beamline (p < 10e-11 mbar) must be considered. This talk will give an introduction to the setup and operation of the offline ion source beamline, which will be essential for achieving the first physics results of PUMA.