Cassiopée，面向 ELT 上 XAO 的技术发展：e-APD 红外探测器
Cassiopée, towards technological development for XAO on ELT: the e-APD infrared detector
AI总结：
Cassiopée 项目为未来 ELT 开发极高性能自适应光学关键技术，本文介绍用于波前传感器的快速大型红外 e-APD 相机开发，集成 512x512 阵列，面临自主运行、振动控制等多重挑战。
摘要：
Cassiopée 项目旨在开发关键技术，用于为未来的 ELT 部署极高性能的自适应光学。最终挑战是探测类地行星并表征其大气成分。为此，需要约 109 的成像对比度，这意味着自适应光学性能需实现飞跃，包括高密度可变形镜（120x120 执行器）、低噪声相机以及在几 kHz 下控制环路。该项目汇集了 2 个工业合作伙伴：First Light Imaging 和 ALPAO，以及 2 个学术合作伙伴：ONERA 和 LAM，他们将共同开发用于波前传感的新相机、新可变形镜及其在自适应光学环路中的实现。本文将介绍将用于系统波前传感器的快速大型红外 e-APD 相机的开发。该相机将集成最新的 512x512 Leonardo e-APD 阵列，并将受益于 First Light Imaging 的 C-RED One 相机的技术传承。该应用面临的最重要挑战是自主运行、振动控制、背景限制、紧凑性、采集速度和延迟。
英文摘要：
The Cassiopée project aims to develop the key technologies that will be used to deploy very high-performance Adaptive Optics for future ELTs. The ultimate challenge is to detect earth-like planets and characterize the composition of their atmosphere. For this, imaging contrasts of the order of 109 are required, implying a leap forward in adaptive optics performance, with high density deformable mirrors (120x120 actuators), low-noise cameras and the control of the loop at few kHz. The project brings together 2 industrial partners: First Light Imaging and ALPAO, and 2 academic partners: ONERA and LAM, who will work together to develop a new camera for wavefront sensing, a new deformable mirror and their implementation in an adaptive optics loop. This paper will present the development of the fast large infrared e-APD camera which will be used in the wavefront sensor of the system. The camera will integrate the latest 512x512 Leonardo e-APD array and will benefit from the heritage of the first-light imaging's C-RED One camera. The most important challenges for the application are the autonomous operation, vibration control, background limitation, compactness, acquisition speed and latency.
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