Paper 13093-283
Paper 13093-283
The GEO-X optical blocking filter
19 June 2024 • 17:30 - 19:00 Japan Standard Time | Room G5, North - 1F
Abstract
We have been developing an optical blocking filter for GEO-X which will perform soft X-ray imaging spectroscopy of Earth’s magnetosphere. GEO-X will provide an unprecedented view through X-ray observations in terms of the interaction between solar wind and magnetosphere. GEO-X consists of MEMS X-ray mirrors and a focal plane CMOS detector which is sensitive to visible photons necessitating a thin-film optical blocking filter to attenuate noise from out-of-band photons while providing high transmittance for in-band soft X-ray photons. Performance tests, e.g., acoustic testing, pinhole frequency and X-ray transmission measurements, and UV and atomic oxygen irradiation tests, were conducted and the detailed results will be reported.
Presenter
Nagoya Univ. (Japan)
He received his PhD degree in physics from the University of Tokyo in 2012. He is interested in developing space X-ray optics and thin-film devices, and data analysis for astronomical objects such as stars, galaxies, and galaxy clusters. He was responsible for the development of optical blocking filters on board a third FOXSI (Focusing Optics X-ray Solar Imager) sounding rocket experiment and thermal shields on board IXPE (Imaging X-ray Polarimetry Explorer). He is now responsible for the development of X-ray optics which was onboard FOXSI-4 which is a part of a solar flare campaign and optical blocking filters will be onboard GEO-X.