EPJ Web of Conferences 171, 21002 (2018)
https://doi.org/10.1051/epjconf/201817121002

Heavy Ion Acceleration at J-PARC

¹ Advanced Science Research Center, Japan Atomic Energy Agency, Tokai-mura, Ibaraki, 319-1195 Japan
² J-PARC center, Tokai-mura, Ibaraki, 319-1195 Japan

^* Corresponding author: susumu.sato@j-parc.jp

Published online: 2 February 2018

Abstract

J-PARC, the Japan Proton Accelerator Research Complex, is an accelerator, which provides a high-intensity proton beam. Recently as a very attractive project, the acceleration of heavy ions produced by supplementary ion sources, called J-PARC-HI, is seriously contemplated by domestic as well as international communities. The planned facility would accelerate heavy ions up to U⁹²⁺ with a beam energy 20 AGeV ( of 6.2 AGeV). The highlight of the J-PARC-HI project is its very high beam rate up to ~10¹¹ Hz, which will enable the study of very rare events. Taking advantage of this high intensity, J-PARC-HI will carry out frontier studies of new and rare observables in this energy region: (i) nuclear medium modification of chiral property of vector mesons through low-mass di-lepton signal, (ii) QCD critical pointcharacterization through event-by-event fluctuation signals of particle production, (iii) systematic measurements related to the equation of state through collective flow signal or two-particle momentum correlation signal, or (iv) the search of hyper nuclei with multi strangeness including or exceeding S = 3. The current plan of J-PARC-HI aims to carrying out the first experimental measurements in 2025.