Proceedings ArticleDOI
CCD Readout for the IXO Off-Plane Grating Spectrometer
Andrew D. Holland,Neil J. Murray,James H. Tutt,Randall L. McEntaffer,Peter J. Pool,James Endicott +5 more
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TLDR
The International X-ray Observatory (IXO) project is the result of a merger between the NASA Con-X and ESA/Jaxa XEUS mission concepts.Abstract:
The International X-ray Observatory (IXO) project is the result of a merger between the NASA Con-X and ESA/Jaxa XEUS mission concepts. The IXO mission outline has an X-ray grating spectrometer operating in the 0.3-1 keV band. CCDs are the ideal detector for the readout of the grating spectrometer instrument and have been flown in similar functions on XMM and Chandra. Here we review the Off-Plane X-ray Grating Spectrometer concept for IXO and discuss the optimization of CCD technology for detection in the 0.2-2 keV X-ray band. We will discuss improvements to the existing technology previously flown, and the use of new technology such as electron multiplying CCDs which can provide enhanced signal to noise at these soft X-ray energies, together with radiation hardening measures and methods of reducing sensitivity to optical stray light. We will also end by discussing alternative CMOS-based technology which may be developed in future years to replace the CCD technology, offering benefits of higher system integration and radiation hardness.read more
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Proceedings ArticleDOI
Developments of the off-plane x-ray grating spectrometer for IXO
Randall L. McEntaffer,Neil J. Murray,Andrew D. Holland,James H. Tutt,Simeon Barber,R. D. Harriss,Ted Schultz,Suzanne Casement,C. Lillie,Dean Dailey,T. Johnson,Rolf Danner,Webster Cash,B. R. Zeiger,Ann F. Shipley,Mat Page,D. Walton,Peter J. Pool,James Endicott,D. Willingale +19 more
TL;DR: In this article, the authors present a mature design concept for an off-plane X-ray Grating Spectrometer (OP-XGS) and an analysis of how this design fulfills the IXO science requirements for the XGS and the optical and mechanical details of this design.
Proceedings ArticleDOI
A tower concept for the off-plane x-ray grating spectrometer for the International X-ray Observatory
TL;DR: An off-plane X-ray Grating Spectrometer (OP-XGS) concept is being developed to meet the needs of the International======X-ray Observatory (IXO).
References
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Journal ArticleDOI
Proton irradiation of EMCCDs
TL;DR: In this paper, the authors described the irradiation of 95 electron multiplication charge coupled devices (EMCCDs) at the Paul Scherrer Institut (PSI) in Switzerland, to investigate the effects of proton irradiation on the operational characteristics of CCDs featuring electron multiplication technology for space use.
Proceedings ArticleDOI
Off-plane x-ray grating spectrometer for the International X-ray Observatory
Randall L. McEntaffer,Neil J. Murray,Andrew D. Holland,C. Lillie,Suzanne Casement,Dean Dailey,T. Johnson,Webster Cash,Phil Oakley +8 more
TL;DR: In this paper, the authors presented a mature mechanical design that places the grating array on the spacecraft avionics bus 13.5 m away from the focal plane and presented the technology development plan for advancing the Technology Readiness Level to 6 for the Off-Plane X-ray Grating Spectrometer.
Proceedings ArticleDOI
Low noise charge injection in the CCD22
David R. Smith,Andrew D. Holland,Ian Hutchinson,A. F. Abbey,Peter J. Pool,David J. Burt,D. C. Morris +6 more
TL;DR: The e2v Technologies CCD22, used in the EPIC MOS focal plane instruments of XMM-Newton, is one such device and is the subject of this paper as mentioned in this paper.
Proceedings ArticleDOI
High-throughput video processing ASICS for x-ray CCDs
TL;DR: In this article, the performance of a low noise, high throughput readout system for X-ray charge-coupled devices (CCDs) is evaluated using two application specific integrated circuits (ASICs).
Proceedings ArticleDOI
A Comparative Study of Proton Radiation Damage in p- and n-Channel CCDs
TL;DR: In this paper, a comparative study of n-channel and p-channel charge coupled devices (CCDs) was conducted under the same conditions, and it was shown that p-CCDs are more radiation hard than conventional nchannel devices as they are not affected by the dominant electron trapping caused by the displacement damage defect the phosphorus-vacancy.
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