Development of 60 μm pitch CdTe double-sided strip detectors for the FOXSI-3 sounding rocket experiment

Development of 60 μm pitch CdTe double-sided strip detectors for the FOXSI-3 sounding rocket experiment
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为 FOXSI-3 探空火箭实验开发 60 μm 节距 CdTe 双面条形探测器

DOI：
10.1016/j.nima.2018.07.011
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发表时间：
2019
期刊：
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
影响因子：
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通讯作者：
Takahashi Tadayuki
Takahashi Tadayuki
中科院分区：
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文献类型：
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作者：
Furukawa Kento;Buitrago-Casas Juan Camilo;Vievering Juliana;Hagino Kouichi;Glesener Lindsay;Athiray P.S.;Krucker S?m;Watanabe Shin;Takeda Shin’ichiro;Ishikawa Shin’nosuke;Musset Sophie;Christe Steven;Takahashi Tadayuki

文献摘要

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FOXSI-3(聚焦光学X射线太阳成像仪)是一项国际探测火箭实验，用于观测来自太阳的硬X射线。前两次飞行成功地证明了硬X射线波段太阳直接成像概念的有效性。对于计划于2018年夏天进行的第三次发射，我们制作了一台镉镉双面条带探测器的原型。为了评估其基本性能，我们进行了实验室测试。确认了13.9keV时0.8keV和59.5keV时1.3keV的能量分辨率(FWHM)。由于光学角分辨率比探测器在焦面处的条距更精细，因此确定子条的位置对于充分利用光学的高精度是非常重要的。为了测试亚条分辨的可能性，我们发展了一种新的方法，用一个精细的多针孔准直器来研究探测器条。分析的结果是非常有利的，我们通过制作多针孔和平板辐照的亚条图像来确定亚条的分辨率。利用平板辐照的子带图像，也验证了探测器的光谱均匀性。
FOXSI-3 (Focusing Optics X-ray Solar Imager) is an international sounding rocket experiment to observe hard X-rays from the Sun. The previous two flights successfully demonstrated the efficacy of the concept of direct solar imaging in hard X-ray band. For the third launch scheduled in the summer of 2018, we have fabricated a prototype of the CdTe Double-sided Strip Detector.To evaluate the basic performance, laboratory tests were conducted. Energy resolution (FWHM) of 0.8 keV at 13.9 keV and 1.3 keV at 59.5 keV are confirmed. Since the optic angular resolution is finer than the strip pitch of the detector at the focal plane, sub-strip position determination is important to make full use of the high precision of the optic. To test the possibility of sub-strip resolution, we developed a new method of investigating the detector strips with a fine multi-pinhole collimator. The results of the analysis were highly favorable and we confirmed the sub-strip resolution by making sub-strip images of multi-pinholes and flat-irradiation. The spectral uniformity over the detector is also confirmed using the sub-strip image of flat-irradiation.