# Quark Matter 2014 - XXIV International Conference on Ultrarelativistic Nucleus-Nucleus Collisions

19-24 May 2014
Europe/Zurich timezone

## New beam line and experiments at J-PARC

20 May 2014, 16:30
2h

### spectrum

Board: M-21
Poster Future Experimental Facilities, Upgrades, and Instrumentation

### Speaker

Prof. Kyoichiro Ozawa (KEK)

### Description

A new beam line is under construction at the Hadron Experimental Facility of the Japan Proton Accelerator Research Complex (J-PARC). Details of the beam line and proposed experiments using the beam line are reported in this talk. A new beam line will deliver a primary 30 GeV proton beam and a secondary produced un-separated hadron (mainly pion) beam. Intensities of the beams are $10^10$ Hz and $10^8$ Hz, respectively. The momentum of the secondary beam is up to 20 GeV/c. The first experiment using the beam line is under preparation to study mass properties of vector mesons and partial chiral symmetry restoration in nuclear medium. The experiment will measure mass spectra of vector mesons in nucleus with 100 times larger statistics than the KEK-PS E325 experiment which shows significant mass modifications in nucleus. The new experiment aims to confirm results of the previous KEK experiment and have a large statistics to discuss more details. The new experiment uses new detector techniques, such as a GEM tracker and a Hadron Blind Detector, to achieve such a large statistics.
On behalf of collaboration: [Other]

### Primary author

Prof. Kyoichiro Ozawa (KEK)

 Slides