Erlangen 2022 – scientific programme

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MS: Fachverband Massenspektrometrie

MS 8: Multi-Reflection Time-of-Flight Spectrometers

MS 8.2: Talk

Thursday, March 17, 2022, 11:00–11:15, MS-H9

A Multi-Reflection Time-of-Flight Mass Spectrometer (MR-ToF MS) for the Offline Ion Source of PUMA — •Moritz Schlaich, Alexandre Obertelli, Frank Wienholtz, and Clara Klink — TU Darmstadt, Darmstadt, Deutschland

Using low-energy antiprotons provided by the Extra Low Energy Antiproton ring (ELENA) at CERN, the antiProton Unstable Matter Annihilation experiment (PUMA) aims to probe the isospin composition of the density tail of radioactive nuclei. For this purpose, PUMA intends to trap one billion antiprotons at ELENA in a portable Penning trap and transport them to the Isotope mass Separator On-Line DEvice (ISOLDE) at CERN. There, the isotopes of interested are produced and will be brought together with the antiprotonic cloud. By analyzing the residuals of the subsequent annihilation reactions, the experiment plans to study neutron skin formation of multiple neutron-rich nuclei and possible halo nuclei.

In order to perform reference measurements and initially apply the experimental technique to stable nuclei, a versatile offline ion source is needed that must be able to generate isotopically pure ion bunches with sufficiently high particle intensity. Therefore, an MR-ToF MS will be used to analyze the constituents of the incoming beam and to selectively forwards only the ions of interest within milliseconds. The talk will cover an overview of the system and its capabilities with respect to mass separation.