Technology advancement of the CCD201-20 EMCCD for the WFIRST coronagraph instrument: sensor characterization and radiation damage

被引：58

作者：

Harding, Leon K. ^{[1
]}

Demers, Richard T. ^{[1
]}

Hoenk, Michael ^{[1
]}

Peddada, Pavani ^{[1
]}

Nemati, Bijan ^{[1
]}

Cherng, Michael ^{[1
]}

Michaels, Darren ^{[1
]}

Neat, Leo S. ^{[1
]}

Loc, Anthony ^{[1
]}

Bush, Nathan ^{[2
]}

Hall, David ^{[2
]}

Murray, Neil ^{[2
]}

Gow, Jason ^{[2
]}

Burgon, Ross ^{[2
]}

Holland, Andrew ^{[2
]}

Reinheimer, Alice ^{[3
]}

Jorden, Paul R. ^{[4
]}

Jordan, Douglas ^{[4
]}

机构：

[1] CALTECH, Jet Prop Lab, 4800 Oak Grove Dr, Pasadena, CA 91109 USA

[2] Open Univ, Dept Phys Sci, Ctr Elect Imaging, Walton Hall, Milton Keynes MK7 6AA, Bucks, England

[3] E2v Inc, 765 Sycamore Dr, Milpitas, CA 95035 USA

[4] E2v Technol, 106 Waterhouse Lane, Chelmsford CM1 2QU, Essex, England

来源：

JOURNAL OF ASTRONOMICAL TELESCOPES INSTRUMENTS AND SYSTEMS | 2016年 / 2卷 / 01期

基金：

英国科学技术设施理事会;

关键词：

electron multiplying charge-coupled devices; WFIRST-AFTA; radiation damage; L2; orbit; techniques: mitigation; DISPLACEMENT DAMAGE; PERFORMANCE; SILICON; CAMERA; MODEL; CCDS;

D O I：

10.1117/1.JATIS.2.1.011007

中图分类号：

V [航空、航天];

学科分类号：

08 ; 0825 ;

摘要：

The Wide Field InfraRed Survey Telescope-Astrophysics Focused Telescope Asset (WFIRST-AFTA) mission is a 2.4-m class space telescope that will be used across a swath of astrophysical research domains. JPL will provide a high-contrast imaging coronagraph instrument-one of two major astronomical instruments. In order to achieve the low noise performance required to detect planets under extremely low flux conditions, the electron multiplying charge-coupled device (EMCCD) has been baselined for both of the coronagraph's sensors-the imaging camera and integral field spectrograph. JPL has established an EMCCD test laboratory in order to advance EMCCD maturity to technology readiness level-6. This plan incorporates full sensor characterization, including read noise, dark current, and clock-induced charge. In addition, by considering the unique challenges of the WFIRST space environment, degradation to the sensor's charge transfer efficiency will be assessed, as a result of damage from high-energy particles such as protons, electrons, and cosmic rays. Science-grade CCD201-20 EMCCDs have been irradiated to a proton fluence that reflects the projected WFIRST orbit. Performance degradation due to radiation displacement damage is reported, which is the first such study for a CCD201-20 that replicates the WFIRST conditions. In addition, techniques intended to identify and mitigate radiation-induced electron trapping, such as trap pumping, custom clocking, and thermal cycling, are discussed. (c) 2015 Society of Photo-Optical Instrumentation Engineers (SPIE)

引用

页数：31

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