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1. Demonstration of an intense lithium beam for forward-directed pulsed neutron generation

Author

Masahiro Okamura, Shunsuke Ikeda, Takeshi Kanesue, Kazumasa Takahashi, Antonino Cannavó, Giovanni Ceccio, and Anastasia Cassisa

Subjects
Medicine, Science
Abstract

Abstract As an alternative to research nuclear reactors, a compact accelerator-driven neutron generator that uses a lithium beam driver could be a promising candidate since it produces almost no undesired radiation. However, providing an intense lithium-ion beam has been difficult, and it has been thought that the practical application of such a device would be impossible. The most critical problem of insufficient ion fluxes has been solved by applying a direct plasma injection scheme. In this scheme, a pulsed high-density plasma from a metallic lithium foil generated by laser ablation is efficiently injected and accelerated by a radio-frequency quadrupole linear accelerator (RFQ linac). We have obtained a peak beam current of 35 mA accelerated to 1.43 MeV, which is two orders of magnitude higher than a conventional injector and accelerator system can deliver.

Published
2022
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2. Investigation of a light Dark Boson existence: The New JEDI project

Author

Beyhan Bastin, Jürgen Kiener, Isabelle Deloncle, Alain Coc, Maxim Pospelov, Jaromir Mrazek, Livio Lamia, Dieter Ackermann, Philip Adsley, Charles-Olivier Bacri, Jérôme Bourçois, Vaclav Burjan, Anastasia Cassisa, Giuseppe D’agata, Gilles De France, Alessia Di Pietrio, Yasmine Demane, François De Oliveira, Lindsay Donaldson, Corinne Donzaud, Jean-Eric Ducret, Clarisse Hamadache, Fairouz Hammache, Pete Jones, Marco La Cognata, Adrien Laviron, Marek Lewitowicz, Kgashane Malatji, Antonio Massara, Cyril Pitrou, Rosario Gianluca Pizzone, Giovanni Luca Guardo, Marek Płoszajczak, Giuseppe Rapisarda, Bernadette Rebeiro, Brigitte Roussèire, Domenico Santonocito, Nicolas de Séréville, Maria Letizia Sergi, Eva Simeckova, Olivier Sorlin, Christelle Stodel, Vincent Tatischeff, Jean-Charles Thomas, Aurora Tumino, Grand Accélérateur National d'Ions Lourds (GANIL), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique des 2 Infinis Irène Joliot-Curie (IJCLab), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Institut de Physique des 2 Infinis de Lyon (IP2I Lyon), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), AstroParticule et Cosmologie (APC (UMR_7164)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), Institut d'Astrophysique de Paris (IAP), Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Joseph Louis LAGRANGE (LAGRANGE), Université Nice Sophia Antipolis (1965 - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de la Côte d'Azur, and COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-Université Côte d'Azur (UCA)-Centre National de la Recherche Scientifique (CNRS)

Subjects
messenger, star, gas, anomaly, hidden sector, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], new particle
Abstract

Several experiments around the world are looking for a new particle, named Dark Boson, which may do the link between the Ordinary Matter (which forms basically stars, planets, interstellar gas...) and the Hidden Sectors of the Universe. This particle, if it exists, would act as the messenger of a new fundamental interaction of nature. In this paper, the underlying Dark Sectors theory will be introduced first. A non-exhaustive summary of experimental studies carried out to date and foreseen in the incoming years will be presented after,including the 8Be anomaly. The last section will provide a status of the New JEDI**** project which aims to investigate the existence or not of a Dark Boson in the MeV range.

Published
2022
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