The J-PARC heavy ion project

¹ Institute of Particle and Nuclear Studies, KEK, Tsukuba, Ibaraki, Japan
² Tomonoga Center for the History of the Universe, University of Tsukuba, Tsukuba, Ibaraki, Japan
³ Department of physics, University of Tokyo, Tokyo, Japan
⁴ Center for Nuclear Study, University of Tokyo, Tokyo, Japan
⁵ Department of Mathematical and Physical Sciences, Nara Women’s University, Nara, Japan
⁶ Accelerator division, J-PARC Center, Japan Atomic Energy Agency, Tokai, Ibaraki, Japan
⁷ Advanced Science Research Center, Japan Atomic Energy Agency, Tokai, Ibaraki, Japan
⁸ Yukawa Institute for Theoretical Physics, Kyoto University, Kyoto, Kyoto, Japan
⁹ Faculty of International Liberal Arts Global Connectivity Program, Akita International University, Akita, Akita, Japan
¹⁰ Division of Physics and Astronomy, Kyoto University, Kyoto, Kyoto, Japan
¹¹ High Energy Nuclear Physics Laboratory, Cluster for Pioneering Research, RIKEN, Wako, Saitama, Japan
¹² GSI Helmholtz Center for Heavy Ion Research, Darmstadt, Germany
¹³ Brookhaven National Laboratory, Upton, NY, USA
¹⁴ Department of Physics, Tohoku University, Sendai, Miyagi, Japan
¹⁵ RIKEN Nishina Center for Accelerator-Based Science, RIKEN, Wako, Saitama, Japan

^* e-mail: ozawa@post.kek.jp

Published online: 9 November 2022

Abstract

A project to study high-density nuclear matter using heavy ion collisions in a beam energy range of few GeV is being prepared at J-PARC. The goal of the project is to perform experiments with beam energies of 1-12 AGeV/c and the collision rate of 10¹¹ Hz. The project is divided into two phases. For the first stage, measurements with a limited beam intensity will be performed with upgraded spectrometer of an on-going experiment. Full performance will be implemented at the second phase to study in detail the high density matter and light hypernuclei. Feasibility of measurements for both phases are being evaluated.