Gießen 2024 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 2: Nuclear Astrophysics I

HK 2.1: Group Report

Monday, March 11, 2024, 16:45–17:15, HBR 14: HS 4

The Super-FRS Ion Catcher: towards the Early- and First-Science experiments at FAIR — •Daler Amanbayev, the FRS Ion Catcher Collaboration, and the Super-FRS Experiment Collaboration — II. Physikalisches Institut, Justus-Liebig-Universität Gießen, Gießen, Germany

The Super-FRS Ion Catcher (Super-FRS-IC) at the Super-FRS at FAIR will play a crucial role in shaping experiments envisaged for the Early- and First-Science programs. The first experiments aim to measure β-delayed neutron emission probabilities P_xn – important input for r-process calculations, but reliable data are scarce, especially for x>1. In addition, they aim to study multi nucleon transfer (MNT) reactions driven by secondary beams as a promising avenue for accessing heavy neutron-rich nuclei. At a later stage, the Super-FRS-IC will enable experiments of MATS and LaSpec collaborations at the Low-Energy Branch.

At the Super-FRS-IC, beams of exotic nuclei produced at relativistic energies will be thermalized by a newly developed Cryogenic Stopping Cell (CSC) and analyzed via the Multiple-Reflection Time-of-Flight Mass Spectrometer (MR-TOF-MS). A unique combination of characteristics, e.g., high areal density and rate capability of the CSC (up to 40 mg/cm² and at least 10⁷ ions/s, correspondingly), and broad mass range and high sensitivity of the MR-TOF-MS enable conducting experiments in new and effective ways.

This contribution presents the Super-FRS-IC setup and provides an overview of the aforementioned experiments and methods.

Keywords: multi nucleon transfer reactions; r-process; cryogenic stopping cell; MR-TOF-MS; Super-FRS