Bulletin of the American Physical Society
6th Joint Meeting of the APS Division of Nuclear Physics and the Physical Society of Japan
Sunday–Friday, November 26–December 1 2023; Hawaii, the Big Island
Session 2WEB: Gas Cells for Rare Isotope Beam Research IIInvited Workshop
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Chair: Peter Schury, KEK Wako Nuclear Science Center Room: Hilton Waikoloa Village Queens 4 |
Sunday, November 26, 2023 4:00PM - 4:30PM |
2WEB.00001: Recent development of the helium-gas-filled ion catcher at BigRIPS at RIKEN RIBF Invited Speaker: Aiko Takamine The BigRIPS separator at the RIKEN RIBF facility provides a variety of high energy (~300 A MeV) radioactive isotope (RI) beams produced by the in-flight method. A new cryogenic ion catcher filled with helium gas has been developed to convert the beams into thermalized RI beams, as a part of the SLOWRI facility. The ion catcher is combined with a multi-reflection time-of-flight mass spectrograph downstream of the ZeroDegree spectrometer (ZD MRTOF-MS). The setup had its first on-line commissioning run in December 2020 and measured more than 70 nuclear masses, including 3 new masses [1, 2]. |
Sunday, November 26, 2023 4:30PM - 5:00PM |
2WEB.00002: Stopped RIBs for St. Benedict at Notre Dame Invited Speaker: Maxime Brodeur The Superallowed Transition Beta-Neutrino Decay Ion Coincidence Trap (St. Benedict), currently under construction at the University of Notre Dame Nuclear Science Laboratory, aims at measuring the beta-neutrino angular correlation parameter in superallowed mixed beta decay transitions between mirror nuclei. Such measurements will allow us to improve the precision on the extraction of the Vud matrix element in these transitions. St. Benedict will take a radioactive ion beam produced by TwinSol, thermalize it in a large volume gas cell, then transport it into two separates, differentially pumped, volumes using a radiofrequency (RF) carpet and a radio-frequency quadrupole (RFQ) ion guide before injecting it in an RFQ trap to create cool ion bunches for injection into the measurement Paul trap. Results of the off-line commissioning of the gas catcher and its extraction system and the online installation will be presented. |
Sunday, November 26, 2023 5:00PM - 5:30PM |
2WEB.00003: KISS gas cell system for the nuclear spectroscopy of multinucleon transfer reaction products Invited Speaker: Yoshikazu Hirayama We have developed the KEK Isotope Separation System (KISS) [1,2] at RIKEN to study heavy element synthesis in the universe. KISS presently consists of an argon gas cell based laser ion source (atomic number selection) followed by isotope separation on-line (mass number selection). KISS has successfully provided pure low-energy beams of neutron-rich isotopes near N = 126 in the platinum region and near N = 152 in the uranium region produced by multi-nucleon transfer reactions [3], which were studied by their nuclear spectroscopy such as b-decay spectroscopy, mass measurements, and laser spectroscopy. |
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