High resolution and high throughput x-ray optics for future astronomical missions

Zhang, W. W.; Biskach, Michael P.; Blake, P.; Bly, Vincent T.; Carter, J. M.; Chan, Kai-Wing; Gaskin, Jessica A.; Hong, M.; Hohl, B. R.; Jones, W. D.; Kolodziejczak, Jeffery J.; Kolos, Linette D.; Mazzarella, J. M.; McClelland, Ryan S.; McKeon, Kevin P.; Miller, T. M.; O’Dell, Stephen L.; Riveros, Raul E.; Saha, Timo T.; Schofield, Mark; Sharpe, Marton; Smith, Helen

doi:10.1117/12.2024250

Cited by 15 publications

(11 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Our group at NASA/Goddard Space Flight Center has been actively pursuing technology for making lightweight xray optics with this modular approach 11,12 with thin substrates. We have developed a full suite of capabilities to fabricate substrates, to coat x-ray reflective layer, to align and bond mirrors, to design mirror modules and their integration.…”

Section: Preserving Mirror Figures For Lightweight X-ray Opticsmentioning

confidence: 99%

Preserving accurate figures in coating and bonding mirrors for lightweight x-ray telescopes

et al. 2014

View full text Add to dashboard Cite

Lightweight, high-resolution, high throughput optics for x-ray astronomy requires fabrication and integration of thin mirrors segments with arc-second precision. In this paper, we present results on our effort leading to the most recent two test modules achieving the intermediate goal of 10 arc-second resolution. We will address issues of coating and bonding thin glass mirrors with negligible distortion. Annealing of sputtered high-density metallic films was found to be sufficiently accurate. We will present result from tests of bonding mirrors onto experimental strongbacks, as well as the sensitivity on bonding procedure, bond parameters and environment.

show abstract

Section: Preserving Mirror Figures For Lightweight X-ray Opticsmentioning

confidence: 99%

Preserving accurate figures in coating and bonding mirrors for lightweight x-ray telescopes

et al. 2014

View full text Add to dashboard Cite

show abstract

“…[3] The mirror segments thus formed are cut to size (200 mm axial length and variable azimuthal span), coated with a thin layer of Iridium, and temporarily mounted to a hexapod manipulator allowing for rigid body alignment.…”

Section: Slumped Glass Mirror Module Technology Overviewmentioning

confidence: 99%

Design and testing of lightweight and high resolution X-ray mirror modules

McClelland

2015

2015 IEEE Aerospace Conference

View full text Add to dashboard Cite

Lightweight and high resolution optics are needed for future space-based X-ray telescopes to achieve advances in high-energy astrophysics. The Next Generation X-ray Optics (NGXO) team at NASA GSFC is nearing mission readiness for a 10 arc-second Half Power Diameter (H PD) slumped glass mirror technology while laying the groundwork for a future 1-2 arc-second technology based on polished silicon mirrors. Technology Development Modules (TDMs) have been designed, fabricated, integrated with mirrors segments, and extensively tested to demonstrate technology readiness. Tests include X-ray performance, thermal vacuum, acoustic load, and random vibration. The thermal vacuum and acoustic load environments have proven relatively benign, while the random vibration environment has proven challenging due to large input amplification at frequencies above 500 Hz. Epoxy selection, surface preparation, and larger bond area have increased bond strength while vibration isolation has decreased vibration amplification allowing for space launch requirements to be met in the near term. The next generation of TDMs, which demonstrate a lightweight structure supporting more mirror segments, has been recently fabricated. Analysis predicts superior performance characteristics due to the use of E-60 Beryllium-Oxide Metal Matrix Composite material, with only a modest cost increase.These TDMs are larger, lighter, stiffer, and stronger than the current generation.Preliminary steps are being taken to enable mounting and testing of 1-2 arc-second mirror segments expected to be available in the future. A Vertical Beam Line ( V BL) test facility will minimize mirror gravity distortion and allow for less constrained mirror mounts, such as fully kinematic mounts.Permanent kinematic mounting into a modified TDM has been demonstrated to achieve 2 arc-second level distortion free alignment.

show abstract

“…Fabricating thin mirrors with these attributes is a significant challenge since typical methods of shaping mirrors, such as grinding and polishing, do not work well for compliant substrates. Glass slumping has been shown to produce excellent figure 1 , but as always, room for improvement remains. A process for fabricating thin glass grazing-incidence mirrors is proposed, where flat glass is curved using a non-contact slumping method, followed by figure correction using ion implantation.…”

Section: Introductionmentioning

confidence: 95%

Shaping of thin glass X-ray telescope mirrors using air bearing slumping and ion implantation

2014

View full text Add to dashboard Cite

High resolution and high throughput x-ray optics for future astronomical missions

Cited by 15 publications

References 0 publications

Preserving accurate figures in coating and bonding mirrors for lightweight x-ray telescopes

Preserving accurate figures in coating and bonding mirrors for lightweight x-ray telescopes

Design and testing of lightweight and high resolution X-ray mirror modules

Shaping of thin glass X-ray telescope mirrors using air bearing slumping and ion implantation

Contact Info

Product

Resources

About