TULIP

The study of exotic nuclei, or short-lived radioactive nuclear systems, is one of the main avenues of research with a high potential for discoveries worldwide, in modern physics. The production of these systems, in the form of ions, is an essential pre-requisite to advance our understanding of the subatomic world. The national flagship for radioactive ion beam production is the SPIRAL facility and the SPIRAL2 ESFRI roadmap project, based at the Grand Accélerateur National d’Ions Lourds (GANIL) in Caen [1]. The Target Ion Source for Short-Lived Isotope Production (TuLIP) project aims to enhance the near-term nuclear physics research possibilities by creating unique radioactive ion beams for ambitious subatomic experiments at GANIL. This collaborative effort between GANIL and the Institut de Physique Nucléaire in Orsay (IPN) will explore fusion-evaporation nuclear reactions in a new Target-Ion Source System, associated with innovative nano-structured materials specifically developed for nuclear physics research. In-beam tests of common R&D will be carried out using the accelerated tandem beams of the Transnational Access facility ALTO [2], at the IPN. This is a short-term project complementary to other on-going SPIRAL developments and could provide an essential stepping-stone to facilitate the launch of the emblematic research program dedicated to first observations of exotic nuclei. The first prototype could make post-accelerated alkali radioactive ion beams for near-term experiments a reality by 2021, with low energy metallic beams by 2023 on success of a second R&D prototype. Selective laser-ionization will be investigated at ALTO in 2020 to explore metallic ion production with the first prototype. Results of this work will be openly presented at conferences and appear in peer-reviewed papers. It is expected to benefit a wide community of physicts and stimulate unique physics opportunities. One of the most promising regions for new physics focusses on the unusual symmetry present in the 100Sn nucleus. This self-conjugate doubly magic nucleus, composed of 50 protons (Z) and 50 neutrons (N) is the most exotic symmetrical nucleus of this type that be created. We aim to produce short-lived radioactive metallic ions around N=Z=50, and this will be our marker of success. [1] http://pro.ganil-spiral2.eu/spiral2 [2]http://ipnwww.in2p3.fr/installation-ALTO, ENSAR2 EU HORIZON2020, contrat n°654002