Bulletin of the American Physical Society
APS April Meeting 2020
Volume 65, Number 2
Saturday–Tuesday, April 18–21, 2020; Washington D.C.
Session L02: Science, Status, and Prospects of U.S. Facilities for Nuclear PhysicsInvited Live Undergrad Friendly
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Sponsoring Units: DPB DNP Chair: Sarah Cousineau, Oak Ride National Lab Room: Washington 1 |
Sunday, April 19, 2020 3:30PM - 4:06PM Live |
L02.00001: The Continuous Electron Beam Accelerator Facility Invited Speaker: Stuart Henderson The Continuous Electron Beam Accelerator Facility (CEBAF) at Jefferson Lab initiated operation in 1995 and since then has served as the central experimental tool for fundamental nucleon structure and hadron physics research in the U.S. When built, the facility was the first deployment of superconducting radiofrequency technology at a large scale, setting the pace for the SRF-based accelerators throughout the world that followed. The facility recently completed the 12 GeV Upgrade to double the electron beam energy from 6 GeV to 12 GeV, enhance experimental capabilities, and construct a new experimental hall with a focus on exotic meson spectroscopy. Today CEBAF supports a wide-ranging experimental program encompassing nucleon structure, hadron spectroscopy, and fundamental symmetries based on exquisitely controlled, polarized high-energy electron beams, serving an international user community numbering more than 1600. This presentation will review the evolution of CEBAF, its important contributions to nuclear physics and accelerator science and technology, and describe its exciting prospects for the future. [Preview Abstract] |
Sunday, April 19, 2020 4:06PM - 4:42PM Live |
L02.00002: The Facility for Rare Isotope Beams Invited Speaker: Jie Wei The Facility for Rare Isotope Beams (FRIB) is a major new scientific user facility under construction on the campus of the Michigan State University in USA for nuclear science research with beams of rare isotopes. With a total construction cost of {\$}730 million, the project has passed the 92{\%} complete mark and is managed toward early completion in 2021. With design average beam power two orders of magnitude higher than operating heavy-ion facilities, FRIB stands at the power frontier of the accelerator family. Commissioning is planned for spring 2020 with heavy ion beams as heavy as A/Z\textasciitilde 7, which are to be accelerated to energies above 200 MeV/u by about 270 superconducting radiofrequency resonators contained in 39 cryomodules in the first two segments of the Linac. Development work is launched also for facility upgrade doubling the primary beam energy to 400 MeV/u. This paper summarizes the science, status, and prospects of FRIB project. *Work supported by the U.S. Department of Energy Office of Science under Cooperative Agreement DE-SC0000661. $^{\mathrm{\# }}$\underline {wei@frib.msu.edu} [Preview Abstract] |
Sunday, April 19, 2020 4:42PM - 5:18PM Live |
L02.00003: The Relativistic Heavy Ion Collider Invited Speaker: Thomas Roser Over the last 20 years, as the first hadron accelerator and collider consisting of two independent superconducting rings, the Brookhaven Relativistic Heavy Ion Collider (RHIC) has operated with a wide range of beam energies and particle species. With a number of facility upgrades that were based on focused accelerator R{\&}D the performance in operational flexibility and reliability and luminosity production has consistently set records. This included an initial addition of the unique capability of accelerating and colliding 250 GeV polarized protons to study the spin structure of the proton and the first implementation of high energy bunched beam stochastic cooling resulting in record luminosities for heavy ion collisions. Recently the first bunched beam electron cooling was successfully commissioned at RHIC. [Preview Abstract] |
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