An optical design of the telescope in the Wide Field of View Cherenkov/Fluorescence Telescope Array

doi:10.1016/j.astropartphys.2015.01.006

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	An optical design of the telescope in the Wide Field of View Cherenkov/Fluorescence Telescope Array
	LHAASO Collaboration
	2015
发表期刊	ASTROPARTICLE PHYSICS
卷号	67 页码:8-17
摘要	Spherical design and Davies-cotton design, which can supply a wide Field of View (FOV) and have a single optical element structure, are the two candidate optics for Wide FOV Cherenkov/Fluorescence Telescope Array (WFCTA). To obtain a good imaging quality, we have done a detailed study to acquire optimal configurations for these two optics. In this paper, first, a proper curvature radius for the reflector, an optimized location for the camera, as well as a tolerance for the distortion of images for two designs have been presented. Furthermore, using such optimal configurations, the features of Cherenkov images initiated by proton and iron showers both with two optics have been investigated. Based on these results, it can be concluded that spherical design has the prior optical properties, such as a wider FOV of 16°, a higher and more homogeneous resolution for all incident directions within the 16° FOV and a lower light loss in the spots, as well as more signals collected in an Cherenkov image, relatively shorter arrival time difference for lights in a shower and brighter PMTs in the central part of a shower track. Thus it will be chosen as WFCTA optics. Finally, the optical properties of the two designs with 10° FOV have also been investigated. It should be mentioned that with such a smaller FOV, Davies-cotton optics is an effective design for it has a great imaging quality comparing with the setup of 16° FOV. © 2015 Elsevier B.V. All rights reserved.
文章类型	Article
关键词	Cherenkov Curvature radii Imaging quality Light spot Photon collection Spherical designs Telescope arrays Wide field of view
DOI	10.1016/j.astropartphys.2015.01.006
收录类别	EI
WOS类目	408 Structural Design ; 657 Space Physics ; 741.1 Light/Optics ; 819.1 Natural Fibers ; 921.6 Numerical Methods
引用统计	被引频次：3[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ihep.ac.cn/handle/311005/228898
专题	粒子天体物理中心
推荐引用方式 GB/T 7714	LHAASO Collaboration. An optical design of the telescope in the Wide Field of View Cherenkov/Fluorescence Telescope Array[J]. ASTROPARTICLE PHYSICS,2015,67:8-17.
APA	LHAASO Collaboration.(2015).An optical design of the telescope in the Wide Field of View Cherenkov/Fluorescence Telescope Array.ASTROPARTICLE PHYSICS,67,8-17.
MLA	LHAASO Collaboration."An optical design of the telescope in the Wide Field of View Cherenkov/Fluorescence Telescope Array".ASTROPARTICLE PHYSICS 67(2015):8-17.

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