Neutron Instruments at J-PARC: Toward the State-of-the-Art Facility

Abstract

Since 2001, researchers, engineers and other members in the MLF (Materials and Life Science) division have not only intensively constructed instruments, but they have also been involved in facility management, including process control of beamline construction, safety, maintenance, user support, beamtime management, outreach, and development of the proposal system. Although the beam power achieved by the end of 2009 was only 1/10 of the designed value, it has reached 40 times the power of KENS's beam power. The repetition rate of 25 Hz, which is much smaller than that of the first target station at ISIS (50 Hz) and SNS (60 Hz), highlights the uniqueness of the neutron instruments at JPARC, where a wide dynamical range is attained with limited loss of neutrons.