WSO-UV Mission WUVS Instrument FUV-UV CCD Detectors Qualification Campaign Main Results | Sciact - CRIS-system of Boreskov Institute of Catalysis

WSO-UV Mission WUVS Instrument FUV-UV CCD Detectors Qualification Campaign Main Results Full article

Conference

International Conference on Space Optics
30 Mar - 2 Apr 2021 , Paris

Source

Proceedings of SPIE - The International Society for Optical Engineering Сер. "International Conference on Space Optics, ICSO 2020" 2021
Compilation, 2021.

Output data

Year: 2021, Pages: 3-13 Pages count : 11 DOI: 10.1117/12.2599948

Tags

CCD; CCD anti-reflection coating; Quantum efficiency; Vacuum ultraviolet; WSO-UV

Authors

Shugarov Andrey ¹ , Sachkov Mikhail ¹ , Bruce Graham ² , Robbins Mark ² , Walker Andrew ² , Waltham Nick ³ , Clapp Matthew ³ , Salter Mike ³ , Patel Gayatri ³ , Kuzin Sergey ⁴ , Vishnyakov Eugene A. ⁴ , Kirichenko Alexey S. ⁴ , Pertsov Andrey A. ⁴ , Ivlyushkin Denis V. ⁵ , Zavertkin Pavel S. ⁵ , Nikolenko Anton D. ⁵

Affiliations

1	Institute of Astronomy of the Russian Academy of Sciences, 48 Pyatnitskaya Street, Moscow 119017, Russian Federation
2	Teledyne UK Limited, 106 Waterhouse Lane, Chelmsford, Essex, CM1 2QU, UK
3	STFC Rutherford Appleton Laboratory, Harwell Oxford, Didcot, OX11 0QX, UK
4	P.N.Lebedev Physical Institute of the Russian Academy of Sciences, 53 Leninskiy Prospekt, Moscow 119991, Russian Federation
5	Budker Institute of Nuclear Physics, Russian Academy of Sciences, 11 Ac. Lavrentiev Prospekt, Novosibirsk 630090, Russian Federation

World Space Observatory Ultraviolet (WSO-UV) is a major Russian-led international collaboration to develop a large Space-borne 1.7 m Ritchey-Chrétien telescope and instrumentation to study the Universe in the ultraviolet wavelengths. The WSO-UV WUVS spectrograph consists of three channels: two high resolution channels (R=50000) with spectral ranges of 115-176 nm and 174-310 nm, and a low resolution (R=1000) channel with a spectral range of 115-305 nm. Each of the three channels has an almost identical custom detector consisting of a CCD inside a vacuum Enclosure, and drive electronics with associated cables. The main challenges of the WUVS detectors are to achieve high quantum efficiency in the FUV-NUV range, to provide low readout noise (≤3 e- at 50 kHz) and low dark current (≤ 12 e-/pixel/hour), to operate with integral exposures of up to 10 hours, and to provide good photometric accuracy. Teledyne e2v has designed three variants of a custom CCD272-64 sensor with different UV AR coatings, optimised for each WUVS channel. The custom vacuum Enclosure, also designed by Teledyne e2v, prevents contamination and maintains the CCD at the operating temperature of -100oC, while the temperature of the WUVS optical bench is +20oC. STFC RAL Space has developed the Camera Electronics Box (CEB) which houses the CCD drive electronics. Digital correlated double sampling technology provides extremely low readout noise and also enables flexibility to optimise readout noise against pixel frequency for a number of normal and binned pixel readout modes. This paper presents the general trade-offs of the WUVS detector design, methods for extending the service life of the CCD sensors working with low signals in a Space radiation environment, and a summary of the measured and calculated key parameters of the WUVS detectors

Shugarov A. , Sachkov M. , Bruce G. , Robbins M. , Walker A. , Waltham N. , Clapp M. , Salter M. , Patel G. , Kuzin S. , Vishnyakov E.A. , Kirichenko A.S. , Pertsov A.A. , Ivlyushkin D.V. , Zavertkin P.S. , Nikolenko A.D.
WSO-UV Mission WUVS Instrument FUV-UV CCD Detectors Qualification Campaign Main Results
In compilation Proceedings of SPIE - The International Society for Optical Engineering Сер. "International Conference on Space Optics, ICSO 2020" 2021. 2021. – C.3-13. DOI: 10.1117/12.2599948 Scopus OpenAlex

Scopus:	2-s2.0-85116054603
OpenAlex:	W3174878229

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Scopus	3
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