Status of the J-PARC Project

Status of the J-PARC Project

The Japan Proton Accelerator Research Complex (J-PARC) is not only one of the most powerful proton accelerators in the world but also a multipurpose accelerator for neutron science, muon science, nuclear and particle physics, and nuclear engineering. Since 2001, it has been in its first constructing phase, which consists of three accelerators, i.e., the Linac, the 3-GeV rapid cycling synchrotron (RCS), and the 50-GeV main ring synchrotron (MR), and three experimental facilities, i.e., the Materials and Life Science Experimental Facility (MLF), the Hadron Experimental Facility, and the Neutrino Experimental Facility. The construction and the commissioning of the J-PARC are in progress and are almost on schedule. A beam commissioning of the Linac was performed successfully, and it is ready for beam injection to the RCS now. The installation and the off-beam commissioning of the RCS have been completed and the beam commissioning will start in October, 2007. In the MR, the MLF, and the Hadron Experimental Facilities, installation of equipments is in progress towards beam commissioning in 2008. In the Neutrino Experimental Facility, civil construction is going on towards beam commissioning in 2009. This paper provides the present status and near-future plan for the construction and commissioning of various components in the J-PARC project.

The Japan Proton Accelerator Research Complex (J-PARC) is not only one of the most powerful proton accelerators in the world but also a multipurpose accelerator for neutron science, muon science, nuclear and particle physics, and nuclear engineering. Since 2001, it has been in its first constructing phase, which consists of three accelerators, i.e., the Linac, the 3-GeV rapid cycling synchrotron (RCS), and the 50-GeV main ring synchrotron (MR), and three experimental facilities, i.e., the Materials and Life Science Experimental Facility (MLF), the Hadron Experimental Facility, and the Neutrino Experimental Facility. The construction and the commissioning of the J-PARC are in progress and are almost on schedule. A beam commissioning of the Linac was performed successfully, and it is ready for beam injection to the RCS now. The installation and the off-beam commissioning of the RCS have been completed and the beam commissioning will start in October, 2007. In the MR, the MLF, and the Hadron Experimental Facilities, installation of equipments is in progress towards beam commissioning in 2008. In the Neutrino Experimental Facility, civil construction is going on towards beam commissioning in 2009. This paper provides the present status and near-future plan for the construction and commissioning of various components in the J-PARC project.