Photon-counting soft x-ray telescope for the Solar-C mission, Solar Physics and Space Weather Instrumentation IV. Edited by Fineschi, Silvano ; Fennelly, Judy
Photon-counting soft x-ray telescope for the Solar-C mission, Solar Physics and Space Weather Instrumentation IV. Edited by Fineschi, Silvano ; Fennelly, Judy
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用于 Solar-C 任务的光子计数软 X 射线望远镜、太阳物理和空间天气仪器 IV。
DOI：
10.1117/12.893276
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发表时间：
2011
期刊：
影响因子：
--
通讯作者：
Noriyuki
中科院分区：
文献类型：
--
作者：
Sakao;Taro ; Narukage;Noriyuki
我们报告了我们一直在研究的光子计数软x射线望远镜的仪器轮廓和科学原理，该望远镜可能是日本太阳-c任务的科学有效载荷，该任务计划于2019年左右发射。来自太阳日冕的软x射线（~1- 10 keV）包含了丰富的信息：(1)在软x射线中观察到的活动区域明亮核心的可能加热机制（即非耀斑日冕中最热的部分），(2)与耀斑中正在进行的磁重联过程相关的动力学和磁流体动力学结构，甚至(3)与耀斑相关的日冕等离子体超热分布的产生。然而，软x射线日冕的成像光谱研究迄今为止仍未被探索，因为实现这一目标的仪器困难。随着近年来CMOS-APS探测器技术的显著进步，光子计数x射线望远镜将能够在传统的光子集成型曝光之外，对活动区域和耀斑进行成像光谱研究，从而提供观测目标每个空间点的详细温度信息（超出迄今为止使用的滤光比温度）。光子计数x射线望远镜将采用Wolter I型光学元件和一块焦距为4米的分段反射镜，结合焦平面CMOS-APS探测器（0.4-0.5英寸/像素），其帧读出速率要求高达1000 fps。
We report instrument outline as well as science of the photon-counting soft X-ray telescope that we have been studying as a possible scientific payload for the Japanese Solar-C mission whose projected launch around 2019. Soft X-rays (~1- 10 keV) from the solar corona include rich information on (1) possible mechanism(s) for heating the bright core of active regions seen in soft X-rays (namely, the hottest portion in the non-flaring corona), (2) dynamics and magnetohydrodynamic structures associated with magnetic reconnection processes ongoing in flares, and even (3) generation of supra-thermal distributions of coronal plasmas associated with flares. Nevertheless, imaging-spectroscopic investigation of the soft X-ray corona has so far remained unexplored due to difficulty in the instrumentation for achieving this aim. With the advent of recent remarkable progress in CMOS-APS detector technology, the photon-counting X-ray telescope will be capable of, in addition to conventional photon-integration type exposures, performing imaging-spectroscopic investigation on active regions and flares, thus providing, for example, detailed temperature information (beyond the sofar- utilized filter-ratio temperature) at each spatial point of the observing target. The photon-counting X-ray telescope will emply a Wolter type I optics with a piece of a segmented mirror whose focal length 4 meters, combined with a focal-plane CMOS-APS detector (0.4-0.5"/pixel) whose frame read-out rate required to be as high as 1000 fps.