A5046758250- Advanced X-ray Imaging Techniques
- Advanced Surface Polishing Techniques
- Optical Systems and Laser Technology
- Planetary Science and Exploration
- Advanced Electron Microscopy Techniques and Applications
- Solar and Space Plasma Dynamics
- X-ray Spectroscopy and Fluorescence Analysis
- Geophysics and Gravity Measurements
- Educational Robotics and Engineering
- Higher Education Learning Practices
- Urban and spatial planning
- Geophysics and Sensor Technology
- Advancements in Photolithography Techniques
- Laser Material Processing Techniques
- Spacecraft and Cryogenic Technologies
- Adaptive optics and wavefront sensing
- Astronomical Observations and Instrumentation
The University of Tokyo
2020
Japan Science and Technology Agency
2020
Japan Synchrotron Radiation Research Institute
2020
The monolithic Wolter mirror is an ideal optical device for focusing soft x rays to a submicron-sized spot, with the advantages of high efficiency, large acceptance, achromaticity, and robustness alignment error. fabrication process this type has not been established because difficulty in highly accurate figure measurement free-form surfaces small radii curvature steep profiles. In study, we employed tactile scanning surface characterization fabricate high-precision mirror. First, it was...
This study presents an approach for fabricating Wolter type-I mirrors x-ray telescopes using a nickel electroforming replication process with quartz glass mandrels. The proposed method addresses the challenges encountered in conventional fabrication techniques, which involve electroless nickel-coated aluminum mandrels that are susceptible to corrosion and thermal deformation. Quartz offer excellent chemical, thermal, mechanical stability, enabling efficient production of high-performance...
The focusing of x rays is essential in various types x-ray microscopy because the size and flux illuminating beam determine spatial resolution signal intensity, respectively. A system with grazing incidence mirrors allows highly efficient ray dimensions on nanometer scale. Tube-shaped a large numerical aperture high demagnification, including ellipsoidal Wolter mirrors, have recently been developed for soft nanofocusing. However, these low efficiency they cannot focus central part...
Ellipsoidal mirrors are ideal focusing optics for soft x-rays because of advantages that include high numerical aperture, efficiency, and no chromatic aberrations. Shape accuracy nanometer order is required on the internal surface a mirror with diameter around 10 mm. Because difficulty processing surface, ellipsoidal fabricated by replication shapes master mandrels. In previous studies, fabrication process was developed x-ray involving mandrel nickel electroforming. 40-mm-long were focused...
We have been developing X-ray optics for a fourth FOXSI (Focusing Optics Solar Imager) sounding rocket experiment, FOXSI-4. fabricated two types of optics, soft (SXR) and hard (HXR), specified observations. conducted irradiation tests to evaluate performances such as angular resolution effective area. For the Flight Model (FM) SXR, resultant in Half Power Diameter (HPD) is 16 ± 2 / 14 arcseconds at 2.7 4.5 keV best images, respectively no significant energy dependence HPD seen. The observed...
Electroforming replication is an essential technique for fabricating full-shell, grazing-incidence mirrors use in space, laboratories, and synchrotron experiments. For X-ray astronomy, a nickel electroforming process was developed used to produce lightweight high-resolution mirrors. In addition, the experiments has undergone remarkable development over past decade. We expect that of ground-based production optics Xray astronomy will lead further improvements performance telescopes. This...
Focusing x-rays is a key technology for x-ray microscopic techniques. In soft-x-ray region, focusing systems with achromaticity and high numerical aperture have long been desired as substitute Fresnel zone plates. Ellipsoidal mirrors are promising optics such systems. However, two technical problems to be overcome allow practical application of these mirrors: their low efficiency due hollow shapes strict requirements alignment. A novel system using reflective was proposed this purpose. The...
In the soft x-ray region, demand for focusing x-rays into a spot of nanometer order size with high efficiency has been increasing. Ellipsoidal and Wolter mirrors, which are representative ideal reflective optics x-rays, have optical advantages such as achromaticity, large acceptance, numerical aperture, suitable to fully utilize next-generation synchrotron light sources. Recently, fabrication process mirrors replication type using nickel electroforming was developed, several experiments...
In this paper, the results of a preliminary survey on MOT conducted by questionnaire are described so as to better deploy education for SoC development engineers working client companies consortium company established eleven major Japanese semiconductor manufacturers. An overview assessments is given, and current state supported documented, specific deployment plan suggested.
Since a replication-type of the Wolter mirror is obtained as negative shape its mandrel via replication represented by electroforming, high precision fabrication process essential for nano-focusing with at synchrotron radiation facilities. In particular, three-dimensional measurement technique required. this study, we developed system dedicated mandrels. First, error distributions ellipsoidal surface and hyperboloid were measured independently. The geometrical relation between surfaces was...
High-end precision optics are generally manufactured through traditional processes, which produce unique shapes and smooth surfaces, the modern figure correction process. Particularly for soft x-ray regions, demand accurate free-form with complex steep has been increasing recently. Wolter mirrors ring-focusing representative of these types optics, expected to be next-generation devices microscopy. To fabricate sufficient accuracy achieve ideal optical performances, both processes must...