First structural tests of the CryoAC Detector silicon chip of the Athena X-ray observatory
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT(2023)
摘要
The 50 mK cryogenic focal plane anti-coincidence detector of the Athena X-ray observatory (CryoAC) is a silicon suspended absorber sensed by a network of about 400 Ir/Au Transition Edge Sensors (TES) and connected through silicon bridges to a surrounding silicon frame plated with gold (rim). The device is shaped by Deep Reactive Ion Etching (DRIE) from a single silicon wafer of 500 mu m. There are two different possible geometries: a single Monolithic absorber and a Segmented one with 4 distinct absorber structures. As part of the payload of space mission the detector must resist to several mechanical excitation. We have tested a set of structural prototypes of the CryoAC vibrating several hexagonal silicon samples by using the vibrational mask provided by SRON which is responsible for FPA design. The aim is to have a first information on the mechanical response of the silicon bridges that connect the absorber to the rim, to start a trade-off over the two geometries and to validate the elastic-mechanical response.
更多查看译文
关键词
Vibrational tests,DRIE,Silicon absorber,Athena,X-IFU,CryoAC
AI 理解论文
溯源树
样例
生成溯源树,研究论文发展脉络
Chat Paper
正在生成论文摘要