| タイトル | VUV Testing of Science Cameras at MSFC: QE Measurement of the CLASP Flight Cameras |
| 本文（外部サイト） | http://hdl.handle.net/2060/20150018357 |
| 著者（英） | Stewart, M.; Champey, Patrick R.; Winebarger, A.; Kobayashi, Ken; Beabout, D.; Beabout, B.; Cirtain, J.; Robertson, B.; Hyde, D. |
| 著者所属（英） | NASA Marshall Space Flight Center |
| 発行日 | 2015-08-20 |
| 言語 | eng |
| 内容記述 | The NASA Marshall Space Flight Center (MSFC) has developed a science camera suitable for sub-orbital missions for observations in the UV, EUV and soft X-ray. Six cameras were built and tested for the Chromospheric Lyman-Alpha Spectro-Polarimeter (CLASP), a joint National Astronomical Observatory of Japan (NAOJ) and MSFC sounding rocket mission. The CLASP camera design includes a frame-transfer e2v CCD57-10 512x512 detector, dual channel analog readout electronics and an internally mounted cold block. At the flight operating temperature of -20 C, the CLASP cameras achieved the low-noise performance requirements (less than or equal to 25 e- read noise and greater than or equal to 10 e-/sec/pix dark current), in addition to maintaining a stable gain of approximately equal to 2.0 e-/DN. The e2v CCD57-10 detectors were coated with Lumogen-E to improve quantum efficiency (QE) at the Lyman- wavelength. A vacuum ultra-violet (VUV) monochromator and a NIST calibrated photodiode were employed to measure the QE of each camera. Four flight-like cameras were tested in a high-vacuum chamber, which was configured to operate several tests intended to verify the QE, gain, read noise, dark current and residual non-linearity of the CCD. We present and discuss the QE measurements performed on the CLASP cameras. We also discuss the high-vacuum system outfitted for testing of UV and EUV science cameras at MSFC. |
| NASA分類 | Instrumentation and Photography |
| レポートNO | MSFC-E-DAA-TN26214 |
| 権利 | Copyright, Distribution as joint owner in the copyright |
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