Speaker
Description
The Japan Proton Accelerator Research Complex (J-PARC) is a multipurpose facility for the physical experiments. The J-PARC facilities were constructed in the Tokai site of the Japan Atomic Energy Agency (JAEA). The accelerator complex consists of a linac, a 3 GeV Rapid-Cycling Synchrotron (RCS), and a 50 GeV Main Ring synchrotron (MR). RCS delivers the beams to the neutron target and MR, and MR delivers the beams to the neutrino target and the hadron experimental hall. At the beginning, the beam commissioning of the linac started in November 2006. Construction of another accelerators and experimental facilities were continued afterwards, the user operation of the neutron experiments was started in December 2008. In January 2009, we achieved slow extraction for the hadron beam line. The regular neutrino experiment was started in January 2010 to take the physics data. After that, we continued user operation but had some accidental suspensions. We summarize the reliability of J-PARC, the accidents and major causes of suspensions.
