The detector for the far ultraviolet channel of the imaging instrument (FCU) on board the Spectrum-UV (WSO-UV) space telescope

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Gómez de Castro, Ana Inés and Diez, Laura and Yáñez, Javier and Prada Cazalla, Iván and Araujo, Alejandra and Salinas, Alejandra and LLamas, Xavier and Sachkov, Mikhail and Shugarov, Andrey (2020) The detector for the far ultraviolet channel of the imaging instrument (FCU) on board the Spectrum-UV (WSO-UV) space telescope. In SPIE Astronomical Telescopes and Instrumentation, 2020, Bellingham, WA.

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Official URL: https://doi.org/10.1117/12.2560330




Abstract

Spectr-UV/WSO-UV is the third and last of the Spektr missions (Spektr-Radio, Spektr-RG, Spektr-UF), spacebased observatories, of the Russian Scientific Space Program. Spektr-UF/WSO-UV is a 2-m class ultraviolet (UV) observatory to be set in geosynchronous orbit in 2025 from the Vostochny launching pad. The observatory is equipped with instrumentation for UV spectroscopy and imaging. The Universidad Complutense de Madrid together with Institute of Astronomy of the Russian Academy of Sciences are developing jointly the imaging instrument for the mission. The instrument has a UV-optical channel designed for wide field imaging from 174 to 600 nm and a far UV (FUV) channel for high resolution imaging in the 115-175 nm range. Also, some low dispersion spectroscopic capabilities are available in the FUV channel. In this contribution, the characteristics and architecture of the MCP detector being developed by Spain for the FUV channel are described. The detector is a three steps detection system that transforms incoming UV photons into optical photons that are detected by a fast and configurable CMOS device. In a first step UV photons strike the photosensitive CsI substrate deposited on the MCP generating ∼ 1 × 10 5 e − per incoming photon. In a second step, the electrons pulse is transformed into a photon pulse at a phosphor (P46) interface; the output photons shower is captured by a bundle of optical fibers that transport the signal to the CMOS detector. In the final step, the optical photons are detected by the CMOS. Different algorithms are implemented to optimize photon counting for various purposes


Item Type:Conference or Workshop Item (Paper)
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Copyright 2020 Society of Photo‑Optical Instrumentation Engineers (SPIE). One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this publication for a fee or for commercial purposes, and modification of the contents of the publication are prohibited.
Ana I. Gómez de Castro, Laura Díez, Javier Yañez, Iván Prada, Alejandra Araujo, Alejandra Salinas, Xavi LLamas, Mikhail Sachkov, Andrey Shugarov, "The detector for the far ultraviolet channel of the imaging instrument (FCU) on board the Spectrum-UV (WSO-UV) space telescope," Proc. SPIE 11444,
Space Telescopes and Instrumentation 2020: Ultraviolet to Gamma Ray, 114446I (13 December 2020); doi: 10.1117/12.2560330

Uncontrolled Keywords:Ultraviolet astronomy; Ultraviolet space observatories; Ultraviolet detectors; Photon counting detectors; MCP detectors; CMOS; Events detection algorithms
Subjects:Sciences > Physics > Optics
Sciences > Mathematics > Astronomy
ID Code:65663
Deposited On:20 May 2021 15:57
Last Modified:24 May 2021 07:49

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