Neon dewar for the X-ray spectrometer onboard Suzaku
Neon dewar for the X-ray spectrometer onboard Suzaku
复制标题
朱雀号 X 射线光谱仪的氖气杜瓦瓶
DOI：
10.1016/j.nima.2005.12.093
复制
发表时间：
2006
影响因子：
1.4
通讯作者：
R. Kelley
中科院分区：
文献类型：
--
作者：
R. Fujimoto;K. Mitsuda;M. Hirabayashi;K. Narasaki;S. Breon;R. Boyle;M. Dipirro;S. Volz;R. Kelley
朱雀星上的X射线光谱仪（XRS）是第一个在轨的X射线微量热仪阵列。传感器阵列工作在60mK，这是通过绝热退磁制冷机和超流液氦实现的。氖杜瓦瓶是XRS的真空绝热容器。对XRS杜瓦瓶的要求是在发射时的机械环境（15G）下保持探测器和低温系统，并在近地轨道上达到3年的寿命。其特点是采用固体氖作为第二制冷剂和机械冷却器，优化设计氖箱的支撑带以尽可能减少热负荷，并采用减震器以减轻发射时的机械环境。来自机械冷却器的微音效应是影响探测器性能的一个问题，但地面测试结果证明，它们不会干扰探测器。在轨道上运行约1个月后，其热性能表明杜瓦可能达到其设计目标。
The X-ray spectrometer (XRS) onboard Suzaku is the first X-ray microcalorimeter array in orbit. The sensor array is operated at 60mK, which is attained by an adiabatic demagnetization refrigerator and superfluid liquid helium. The neon dewar is a vacuum-insulated container for the XRS. The requirements for the XRS dewar are to maintain the detector and the cryogenic system under the mechanical environment at launch (∼15G), and to attain a lifetime of 3 years in a near-earth orbit. It is characterized with adoptions of solid neon as the second cryogen and a mechanical cooler, design optimization of the support straps for the neon tank to reduce the heat load as much as possible, and shock absorbers to mitigate the mechanical environment at launch. Microphonics from the mechanical cooler was one of the concerns for the detector performance, but the ground test results proved that they do not interfere with the detector. After about 1 month in orbit, its thermal performance showed that the dewar potentially achieves its design goals.