The soft x-ray photon-counting telescope for solar observations
The soft x-ray photon-counting telescope for solar observations
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用于太阳观测的软 X 射线光子计数望远镜
DOI：
10.1117/12.2055925
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发表时间：
2014
期刊：
影响因子：
--
通讯作者：
E. E.
中科院分区：
文献类型：
--
作者：
Sakao;T.;Narukage;N.;Suematsu;Y.;Watanabe;K.;Shimojo;M.;Imada;S.;Ishikawa;S.;and DeLuca;E. E.
我们目前的概述和发展活动的软X射线光子计数光谱成像仪的太阳日冕，我们设想作为一个可能的科学有效载荷，为未来的空间太阳能任务，包括日本太阳能C。软X射线成像仪将采用Wolter I掠入射扇形反射镜，利用该反射镜，将以太阳X射线望远镜的最高角分辨率（焦距为4米，每像素0.5”）拍摄日冕图像（1兆千公里至超过10兆千公里）。除了高分辨率的图像，我们试图实现光子计数能力的成像器采用背照式CMOS图像传感器作为焦平面器件。X射线日冕的成像光谱学将首次在~0.5 keV至10 keV的能量范围内进行。软X射线成像仪的成像光谱观测将为研究磁重联机制和与耀斑有关的超热（非热）电子的产生提供一个宝贵的探针。本文介绍了日本正在进行的光子计数成像仪的研制活动，重点是亚弧秒分辨率掠入射镜的研制。
We present overview and development activities of a soft X-ray photon-counting spectroscopic imager for the solar corona that we conceive as a possible scientific payload for future space solar missions including Japanese Solar-C. The soft X-ray imager will employ a Wolter I grazing-incidence sector mirror with which images of the corona (1 MK to beyond 10 MK) will be taken with the highest-ever angular resolution (0.5"/pixel for a focal length of 4 m) as a solar Xray telescope. In addition to high-resolution imagery, we attempt to implement photon-counting capability for the imager by employing a backside-illuminated CMOS image sensor as the focal-plane device. Imaging-spectroscopy of the X-ray corona will be performed for the first time in the energy range from ~0.5 keV up to 10 keV. The imaging-spectroscopic observations with the soft X-ray imager will provide a noble probe for investigating mechanism(s) of magnetic reconnection and generation of supra-thermal (non-thermal) electrons associated with flares. Ongoing development activities in Japan towards the photon-counting imager is described with emphasis on that for sub-arcsecond-resolution grazing-incidence mirrors.