J-PARC is a joint project between two organizations, High Energy Accelerator Research Organization(KEK) and Japan Atomic Energy Agency(JAEA). The facility is located in Tokai village in the northern region of Ibaraki prefecture, JAPAN.

Construction started in April 2001, and in the spring of 2009 ( end of JFY2008) the Phase 1 project was completed after eight years of construction period.