Photon counting EMCCD developments for the WFIRST coronagraph (Conference Presentation)

High Energy, Optical, and Infrared Detectors for Astronomy VIII Pub Date : 2018-07-10 DOI:10.1117/12.2309387

P. Morrissey, L. Harding, M. Bottom, R. Demers, Bobby Effinger, D. Nieraeth, L. Hovland, Yuki Maruyama, B. Nemati, N. Bush, D. Hall, R. Burgon, A. Holland

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引用次数: 4

Abstract

A photon counting camera based on the Teledyne-e2v CCD201-20 electron multiplying CCD (EMCCD) is being developed for the NASA WFIRST coronagraph, an exoplanet imaging technology development of the Jet Propulsion Laboratory (Pasadena, CA) that is scheduled to launch in 2026. The coronagraph is designed to directly image planets around nearby stars, and to characterize their spectra. The planets are exceedingly faint, providing signals similar to the detector dark current, and require the use of photon counting detectors. Red sensitivity (600-980nm) is preferred to capture spectral features of interest. EMCCDs are baselined both as science and wavefront sensors in the coronagraph in order to simplify the system architecture. We are engaged in a test program to characterize the performance of the EMCCD in the required modes, as well as in a technology development program with Teledyne-e2v to ruggedize the sensors for use in space. In this paper we will summarize our progress, program status, and plans for flight development.

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WFIRST日冕仪的光子计数EMCCD发展(会议报告)

基于Teledyne-e2v CCD201-20电子倍增CCD (EMCCD)的光子计数相机正在为NASA WFIRST日冕仪开发，WFIRST日冕仪是喷气推进实验室(Pasadena, CA)的一项系外行星成像技术开发，计划于2026年发射。日冕仪的设计目的是直接成像附近恒星周围的行星，并描绘它们的光谱。这些行星非常微弱，提供的信号类似于探测器的暗电流，需要使用光子计数探测器。红色灵敏度(600-980nm)是捕获感兴趣的光谱特征的首选。emccd在日冕仪中作为科学传感器和波前传感器作为基准，以简化系统架构。我们正在进行一项测试计划，以表征EMCCD在所需模式下的性能，并与Teledyne-e2v进行技术开发计划，以增强传感器在太空中的使用。在本文中，我们将总结我们的进展，项目现状和飞行发展计划。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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High Energy, Optical, and Infrared Detectors for Astronomy VIII

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