Comparing simulations and test data of a radiation damaged CCD for the Euclid mission
Comparing simulations and test data of a radiation damaged CCD for the Euclid mission
复制标题
比较欧几里得任务中辐射损坏的 CCD 的模拟和测试数据
DOI：
10.1117/12.2232696
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发表时间：
2016
期刊：
影响因子：
--
通讯作者：
T. Prod’homme
中科院分区：
文献类型：
--
作者：
J. Skottfelt;D. Hall;J. Gow;N. Murray;A. Holland;T. Prod’homme
地球大气层外恶劣的辐射环境所产生的辐射损害效应可能是大多数空间飞行任务所关切的一个问题。随着科学目标的要求越来越高，对这些任务上的仪器精度的要求也越来越高，因此研究辐射损伤对电荷耦合器件（CCD）的影响具有重要意义。欧几里得使命的主要目标是利用弱透镜和重子声学来研究暗物质和暗能量的性质振荡技术弱透镜技术依赖于由大型CCD阵列获得的遥远星系的非常精确的形状测量。预计在使命的6年标称寿命期间，CCD将退化到无法进行这些测量的程度，除非辐射损伤效应得到纠正。因此，我们已经创建了一个蒙特卡罗模型，模拟物理过程中发生的传输信号时，通过辐射损坏的CCD。该软件基于Shockley-Read-Hall理论，并尽可能接近地模拟CCD中的物理特性。该代码运行在一个单一的电极水平，并考虑到电荷云的大小和密度，三维陷阱的位置，和多级时钟。该模型的一个关键要素是，它将电子密度的设备特定模拟作为直接输入，从而避免对电荷云的大小和密度进行任何分析假设。本文阐述了如何测试数据和模拟数据可以进行比较，以进一步我们的理解的位置和个人的辐射诱导陷阱的属性。
The radiation damage effects from the harsh radiative environment outside the Earth's atmosphere can be a cause for concern for most space missions. With the science goals becoming ever more demanding, the requirements on the precision of the instruments on board these missions also increases, and it is therefore important to investigate how the radiation induced damage affects the Charge-Coupled Devices (CCDs) that most of these instruments rely on. The primary goal of the Euclid mission is to study the nature of dark matter and dark energy using weak lensing and baryonic acoustic oscillation techniques. The weak lensing technique depends on very precise shape measurements of distant galaxies obtained by a large CCD array. It is anticipated that over the 6 year nominal lifetime of mission, the CCDs will be degraded to an extent that these measurements will not be possible unless the radiation damage effects are corrected. We have therefore created a Monte Carlo model that simulates the physical processes taking place when transferring signal through a radiation damaged CCD. The software is based on Shockley-Read-Hall theory, and is made to mimic the physical properties in the CCD as close as possible. The code runs on a single electrode level and takes charge cloud size and density, three dimensional trap position, and multi-level clocking into account. A key element of the model is that it takes device specific simulations of electron density as a direct input, thereby avoiding to make any analytical assumptions about the size and density of the charge cloud. This paper illustrates how test data and simulated data can be compared in order to further our understanding of the positions and properties of the individual radiation-induced traps.
CCD 的多级并行时钟用于：提高电荷传输效率、清除持久性、时钟防晕以及生成用于泵浦的低噪声背景
DOI：
10.1117/12.2024839
发表时间：
2013
期刊：
--
影响因子：
--
作者：
Murray N
通讯作者：
Murray N
欧几里得辐射损伤电荷耦合器件中的电荷转移建模
DOI：
10.1117/12.925394
发表时间：
2012
期刊：
--
影响因子：
--
作者：
Hall D
通讯作者：
Hall D
对 Euclid CCD 结构中的电荷存储进行建模
影响因子：
1.3
作者：
Clarke A
通讯作者：
Clarke A