Development of Alternative X-ray Optics
description
Transcript of Development of Alternative X-ray Optics
![Page 1: Development of Alternative X-ray Optics](https://reader035.fdocuments.net/reader035/viewer/2022062309/56813d06550346895da6ac70/html5/thumbnails/1.jpg)
Development of Alternative X-ray Optics
Webster CashPhil Oakley
University of Colorado&
Randy McEntafferUniversity of Iowa
![Page 2: Development of Alternative X-ray Optics](https://reader035.fdocuments.net/reader035/viewer/2022062309/56813d06550346895da6ac70/html5/thumbnails/2.jpg)
LaunchedNovember 20, 2006November 13, 2009
Extended X-ray Off-plane SpectrometerEXOS
![Page 3: Development of Alternative X-ray Optics](https://reader035.fdocuments.net/reader035/viewer/2022062309/56813d06550346895da6ac70/html5/thumbnails/3.jpg)
Optical Design:Wire-grid collimator & Off-plane Grating Array
![Page 4: Development of Alternative X-ray Optics](https://reader035.fdocuments.net/reader035/viewer/2022062309/56813d06550346895da6ac70/html5/thumbnails/4.jpg)
Extended X-ray Off-plane Spectrograph
• 3.25° FOV + 3 m length = 6.7” opening aperture
• Wire grid collimator
• Off-plane grating array
• Gaseous Electron Multiplier (GEM) detectors
![Page 5: Development of Alternative X-ray Optics](https://reader035.fdocuments.net/reader035/viewer/2022062309/56813d06550346895da6ac70/html5/thumbnails/5.jpg)
Wire-grid collimator
![Page 6: Development of Alternative X-ray Optics](https://reader035.fdocuments.net/reader035/viewer/2022062309/56813d06550346895da6ac70/html5/thumbnails/6.jpg)
Off-plane grating array
α β
nλ/d
αγ
![Page 7: Development of Alternative X-ray Optics](https://reader035.fdocuments.net/reader035/viewer/2022062309/56813d06550346895da6ac70/html5/thumbnails/7.jpg)
Off-plane Grating ArraySuitable for IXO
![Page 8: Development of Alternative X-ray Optics](https://reader035.fdocuments.net/reader035/viewer/2022062309/56813d06550346895da6ac70/html5/thumbnails/8.jpg)
GEM Detectors(Now Baselined for a SMEX)
![Page 9: Development of Alternative X-ray Optics](https://reader035.fdocuments.net/reader035/viewer/2022062309/56813d06550346895da6ac70/html5/thumbnails/9.jpg)
Collimator calibration
FWHM ~ 1.7 mm
“scatter” ~ 1%
![Page 10: Development of Alternative X-ray Optics](https://reader035.fdocuments.net/reader035/viewer/2022062309/56813d06550346895da6ac70/html5/thumbnails/10.jpg)
Target: Cygnus Loop
Miyata et al. 2007
![Page 11: Development of Alternative X-ray Optics](https://reader035.fdocuments.net/reader035/viewer/2022062309/56813d06550346895da6ac70/html5/thumbnails/11.jpg)
2007 Flight Spectrum
65 seconds, 2 features: 29 counts & 86 counts, 1.8 mm & 1.7 mm FWHM
Detector 0 ~ 40.14±2.39 Å, 43.89±1.96 Å
Detector 1 ~ 44.78±2.34 Å, 48.53±1.91 Å
![Page 12: Development of Alternative X-ray Optics](https://reader035.fdocuments.net/reader035/viewer/2022062309/56813d06550346895da6ac70/html5/thumbnails/12.jpg)
Efficiency and Resolution TestingProblem has been adequate beam
and enough focal length
8m 8m
• Vacuum test facility at CASA/ARL•Based on a Maxim test facility
• Configuration can be changed for specific tests
OpticsDetectorX-ray source
swings
![Page 13: Development of Alternative X-ray Optics](https://reader035.fdocuments.net/reader035/viewer/2022062309/56813d06550346895da6ac70/html5/thumbnails/13.jpg)
Optics TestingFirst Up: a Rigaku K-B Optic
8m 8m
• Vacuum test facility at CASA/ARL• Configuration can be changed for specific tests
KB mirrors
Detector
X-ray source
![Page 14: Development of Alternative X-ray Optics](https://reader035.fdocuments.net/reader035/viewer/2022062309/56813d06550346895da6ac70/html5/thumbnails/14.jpg)
Rigaku K-B Optics
We will be characterizing a 1-D in the next few months
1-D 2-D
![Page 15: Development of Alternative X-ray Optics](https://reader035.fdocuments.net/reader035/viewer/2022062309/56813d06550346895da6ac70/html5/thumbnails/15.jpg)
IXO Holographic Grating
8m 8m
• Vacuum test facility at CASA/ARL• Configuration can be changed for specific tests
KB spherical mirrorsRadial groove grating
Detector
X-ray source
![Page 16: Development of Alternative X-ray Optics](https://reader035.fdocuments.net/reader035/viewer/2022062309/56813d06550346895da6ac70/html5/thumbnails/16.jpg)
Raytracing of Test Setup
![Page 17: Development of Alternative X-ray Optics](https://reader035.fdocuments.net/reader035/viewer/2022062309/56813d06550346895da6ac70/html5/thumbnails/17.jpg)
Summary
• Off-plane Gratings now returning interesting x-ray spectra via rocketry
• New test facility coming on line
• Test of Rigaku Optic
• Test of IXO Holographic Grating
• IXO Grating Designs and Development– McEntaffer next – after coffee break