Sample environment equipment for light irradiation experiments at J-PARC

Abstract

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.

Keywords

Light irradiation xenon lamp mercury lamp shutter control photodetector

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References

For details on the equipment safety review at the MLF, see the website of Equipment Safety at the MLF, https://j-parc.jp/researcher/MatLife/ja/us/kikianzen-en/equipment.html.

The product (MAX-303) is not sold now. The successive new product is MAX-350, For details, see the website of MAX-350, https://www.asahi-spectra.com/opticalinstrument/max350.html.

The product (REX-250) is only available in Japan.

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The information on the beam uniformity through the lens unit is found at, https://www.asahi-spectra.com/opticalinstrument/download/max350_techinfo.pdf.

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