Development of a SiPM Camera for a Schwarzschild-Couder Cherenkov Telescope for the Cherenkov Telescope Array
Development of a SiPM Camera for a Schwarzschild-Couder Cherenkov Telescope for the Cherenkov Telescope Array
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为切伦科夫望远镜阵列的 Schwarzschild-Couder Cherenkov 望远镜开发 SiPM 相机
DOI：
10.22323/1.236.1023
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发表时间：
2015
期刊：
影响因子：
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通讯作者：
D. Williams
中科院分区：
文献类型：
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作者：
A. Otte;J. Biteau;H. Dickinson;S. Funk;T. Jogler;C. Johnson;P. Karn;K. Meagher;H. Naoya;Thanh Huy Nguyen;A. Okumura;M. Santander;L. Sapozhnikov;A. Stier;H. Tajima;L. Tibaldo;J. Vandenbroucke;S. Wakely;A. Weinstein;D. Williams
我们介绍了一种新型的11328像素硅光电倍增管相机的研制，该相机与具有Schwarzschild-Couder光学系统的地面切伦科夫望远镜一起使用，可能成为切伦科夫望远镜阵列的中型望远镜。这种像素化的相机对空气簇射图像进行采样，其光学分辨率是目前切伦科夫望远镜使用的相机的两倍多。更高分辨率的优点将是更好的事件重建，产生更好的背景抑制和重建的伽马射线事件的角分辨率，这在例如银河粒子加速器的形态研究和寻找河外伽马射线源周围的伽马射线晕方面至关重要。将如此大量的像素打包到只有半平方米的面积中，并将快速读数直接连接到传感器的背面是一项具有挑战性的任务。在原型相机的开发中，使用了滨松公司的SiPM和直通硅通孔(TSV)技术。我们给出了相机设计的现状报告，并强调了使这一开发成为可能的一些技术进步。
We present the development of a novel 11328 pixel silicon photomultiplier (SiPM) camera for use with a ground-based Cherenkov telescope with Schwarzschild-Couder optics as a possible medium-sized telescope for the Cherenkov Telescope Array (CTA). The finely pixelated camera samples air-shower images with more than twice the optical resolution of cameras that are used in current Cherenkov telescopes. Advantages of the higher resolution will be a better event reconstruction yielding improved background suppression and angular resolution of the reconstructed gamma-ray events, which is crucial in morphology studies of, for example, Galactic particle accelerators and the search for gamma-ray halos around extragalactic sources. Packing such a large number of pixels into an area of only half a square meter and having a fast readout directly attached to the back of the sensors is a challenging task. For the prototype camera development, SiPMs from Hamamatsu with through silicon via (TSV) technology are used. We give a status report of the camera design and highlight a number of technological advancements that made this development possible.