Conference proceeding
Blazed transmission grating technology development for the Arcus x-ray spectrometer explorer
Proceedings of SPIE - The International Society for Optical Engineering, Vol.10699
2018
DOI: 10.1117/12.2314180
Abstract
Arcus is a high-resolution soft x-ray spectroscopy mid-size Explorer mission selected for a NASA Phase A concept study. It is designed to explore structure formation through measurements of hot baryon distributions, feedback from black holes, and the formation and evolution of stars, disks, and exoplanet atmospheres. The design provides unprecedented sensitivity in the 1.2-5 nm wavelength band with effective area up to 350 cm2 and spectral resolving power R > 2500. The Arcus technology is based on a highly modular design that features 12 m-focal length silicon pore optics (SPO) developed for the European Athena mission, and critical-angle transmission (CAT) x-ray diffraction gratings and x-ray CCDs developed at MIT. CAT gratings are blazed transmission gratings that have been under technology development for over ten years. We describe technology demonstrations of increasing complexity, including mounting of gratings to frames, alignment, environmental testing, integration into arrays, and performance under x-ray illumination with SPOs, using methods proposed for the manufacture of the Arcus spectrometers. CAT gratings have demonstrated efficiency > 30%. Measurements of the 14th order Mg-Kα1,2 doublet from a co-aligned array of four CAT gratings illuminated by two co-aligned SPOs matches ray trace predictions and exceeds Arcus resolving power requirements. More than 700 CAT gratings will be produced using high-volume semiconductor industry tools and special techniques developed at MIT
Details
- Title: Subtitle
- Blazed transmission grating technology development for the Arcus x-ray spectrometer explorer
- Creators
- Ralf K Heilmann - Massachusetts Institute of TechnologyMark L Schattenburg - Massachusetts Institute of TechnologyAlexander R Bruccoleri - Izentis LLC (United States)Jungki Song - Massachusetts Institute of TechnologyCasey T Deroo - Harvard UniversityPeter CheimetsRandall K Smith - Harvard UniversityVadim Burwitz - Max Planck SocietyEdward N Hertz - Harvard UniversityGisela Hartner - Max Planck SocietyMarlis-Madeleine La CariaCarlo Pelliciari - Max Planck SocietyHans M Guenther - Massachusetts Institute of TechnologySarah HeineBeverly Lamarr - Massachusetts Institute of TechnologyHerman L Marshall - Massachusetts Institute of TechnologyNorbert S Schulz - Massachusetts Institute of TechnologyEric M Gullikson - Lawrence Berkeley National Laboratory
- Resource Type
- Conference proceeding
- Publication Details
- Proceedings of SPIE - The International Society for Optical Engineering, Vol.10699
- Publisher
- SPIE
- DOI
- 10.1117/12.2314180
- ISSN
- 0277-786X
- eISSN
- 1996-756X
- Grant note
- 654215 / European Commission (ec__________::EC)
- Language
- English
- Date published
- 2018
- Academic Unit
- Physics and Astronomy; University College Courses
- Record Identifier
- 9984199705802771
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