Sample environment equipment for light irradiation experiments at J-PARC

摘要

During the past seven years, we have been preparing the sample environment equipment and related devices for light irradiation experiments at the Materials and Life Science Experimental Facility (MLF) in Japan Proton Accelerator Research Complex (J-PARC). Two light sources are available at the facility: a xenon lamp (300 W) and a mercury lamp (250 W). Samples can be irradiated by homogeneous wide-area (25 mm × 25 mm) light using an optical fibre and a lens unit. The shutter of the light source can be controlled remotely from the operation cabin at the MLF. The timing of the opening and closing of the shutter is recorded using a photodetector and the data acquisition system at the MLF. Software for measuring the time-dependent neutron reflectivity is available.