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The Super Separator Spectrometer (S$^3$) for the SPIRAL2 facility

Abstract : The Super Separator Spectrometer S3 is, with the NFS (Neutrons For Science) facility, a major experimental system developed for SPIRAL2. It is designed for very low cross section experiments at low (<15MeV/u) energy. It will receive the very high intensity (more than 1pµA) stable ion beams accelerated by the superconducting LINAG accelerator of SPIRAL2. S3 will be notably used for the study of rare nuclei produced by fusion evaporation reactions, such as superheavy elements and neutron-deficient isotopes. Such experiments require a high transmission of the products of interest but also a separation of these nuclei from unwanted species. Hence S3 must have a large acceptance but also a high selection power including physical mass resolution. These properties are reached with the use of seven large aperture superconducting quadrupole triplets which include sextupolar and octupolar corrections in a twostage separator (momentum achromat followed by a mass spectrometer) that can be coupled to the SIRIUS implantation-decay spectroscopy station or to the REGLIS3 gas cell with laser ionization to provide very pure beams for low energy experiments. S3 is now in the construction phase. We will present the scientific objectives of S3 as well as the current status of the facility and its different elements
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Submitted on : Monday, February 8, 2021 - 12:52:53 PM
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A. Drouart, J.A. Nolen, H. Savajols. The Super Separator Spectrometer (S$^3$) for the SPIRAL2 facility. 27th International Nuclear Physics Conference (INPC2019), Jul 2019, Glasgow, United Kingdom. pp.012032, ⟨10.1088/1742-6596/1643/1/012032⟩. ⟨in2p3-03134200⟩

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