Speaker
Description
J-PARC is currently an accelerator complex utilizing high-intensity proton beam.
However, recently as a very attractive project, acceleration of heavy ions with
supplementing ion sources at J-PARC (called J-PARC-HI) is seriously contemplated by domestic as well as international communities.
The planned facility will accelerate up to $U^{92+}$ with beam energy 20 AGeV, which corresponds to $\sqrt{s_{NN}}$ = 6.2 AGeV.
The highlight of the J-PARC-HI is its highest beam rate up to $~10^{11}$ Hz, which will enable us to probe very rare events.
Taking advantage of this high intensity, J-PARC-HI will aggressively study 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 point characterization through event-by-event fluctuation signals of particle production,
(iii)systematic measurements for equation of state through collective flow signal or two-particle momentum correlation signal, or
(iv) searching for hyper nuclei with multi strangeness including which equal or more than 3.
For such measurements, a multi purpose large acceptance spectrometer is designed, with alternative choices of a dedicated di-muon spectrometer and/or of a closed geometry spectrometer for the hyper-nucleus study.
The plan for the heavy ion at J-PARC, is aiming for the first experimental measurements in 2025. In this presentation, the global ideas for the J-PARC-HI project will be introduced.
| List of tracks | Upgrades and new experiments |
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