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The Gaia Challenge: Testing High Performance CCDs in large quantities

机译：盖亚挑战：大量测试高性能CCD

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Gaia, funded by ESA with EADS Astrium as the prime contractor, is an ambitious space observatory designed to measure the positions of around one billion stars with unprecedented accuracy and is currently planned for launch in 2011. The Gaia instrument will feature a focal plane containing 106 large area CCD91-72s manufactured by e2v technologies. This will be the largest CCD focal plane ever flown in space covering an area of 0.286m~2. To ensure that the devices meet the required high specification, they undergo significant testing before being accepted by the end user. This involves geometrical, mechanical, environmental, endurance, electrical and electro-optical testing. With the flight phase contract for Gaia requiring the delivery of 130 flight grade devices (plus another 40 engineering devices of various grades), the volume of testing is an order of magnitude greater than and of similar timescale to, the typical space programmes e2v technologies are involved with. This paper will begin by providing an overview of the Gaia mission and the custom CCD91-72 that e2v technologies have designed for it. Next the various phases of the Gaia programme will be outlined and how e2v approached the test requirements for each stage. Problems encountered, lessons learned, and technical and logistical solutions implemented at each stage will be presented, to discuss how e2v technologies improved the quality of the test data whilst reducing the test times. There will be particular emphasis on the electro-optical testing and the test cameras on which this is performed.
机译：盖亚航空航天局由欧洲航天局提供资金，以EADS Astrium作为主要承包商，是一个雄心勃勃的太空观测站，旨在以前所未有的精度测量大约10亿颗恒星的位置，目前计划于2011年发射。 e2v技术制造的大面积CCD91-72s。这将是有史以来最大的CCD焦平面，覆盖面积为0.286m〜2。为确保设备符合要求的高规格，在接受最终用户认可之前，它们会经过大量测试。这涉及几何，机械，环境，耐久性，电和电光测试。盖亚的飞行阶段合同要求交付130个飞行级设备（加上另外40个不同级别的工程设备），因此测试量比典型的太空计划e2v技术高出一个数量级，并且时间相近。参与。本文将首先概述Gaia任务以及e2v技术为其设计的定制CCD91-72。接下来，将概述Gaia计划的各个阶段，以及e2v如何满足每个阶段的测试要求。将介绍在每个阶段遇到的问题，经验教训以及实施的技术和后勤解决方案，以讨论e2v技术如何在减少测试时间的同时提高测试数据的质量。将特别强调电光测试和在其上执行测试的测试相机。

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