Optimization for spatial resolution and count rate of a far ultraviolet photon-counting imaging detector based on induced charge position-sensitive anode

	Optimization for spatial resolution and count rate of a far ultraviolet photon-counting imaging detector based on induced charge position-sensitive anode
	Ni Q.
	2014
发表期刊	Guangxue Xuebao/Acta Optica Sinica
ISSN	ISBN/02532239
卷号	34 期号:8
摘要	A new prototype of two-dimensional photon-counting imaging detector with induced charge WSA anode in far ultraviolet (FUV) region has been developed based on the FUV imaging spectrometer's requirements on high output count rate and spatial resolution. The detector is mainly composed of a CsI Chevron microchannel plate (MCP) stacks operating in pulse-counting mode, induced-charge wedge-strip position-sensitive anode (WSA) and correlative analog and data processing circuit. A three electrode induced-charge WSA anode with 48 mm diameter active area is designed and fabricated, and front-end analog and data collection circuit are also been developed. The space resolution for induced-charge WSA anode depends on the signal-to-noise ratio (SNR) of front-end analog circuit, while the SNR is relative to the shaping time of shaping amplifier. The longer is the shaping time, the higher is the SNR, and the lower is the maximum output rate of the front-end analog circuit. Both resolution and maximum count rate are measured for different shaping time such as 0.25, 0.5, 1, 2 and 4 ms. The measured results show that the resolution is between 4 lp/mm and 9 lp/mm, and maximum output rate is between 11 kcounts/s and 105 kcounts/s. The shaping amplifier with 0.5 ms shaping time can only completely satisfy the requirement of FUV imaging spectrometer on the spatial resolution and maximum output rate.
收录类别	EI
语种	中文
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/44238
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Ni Q.. Optimization for spatial resolution and count rate of a far ultraviolet photon-counting imaging detector based on induced charge position-sensitive anode[J]. Guangxue Xuebao/Acta Optica Sinica,2014,34(8).
APA	Ni Q..(2014).Optimization for spatial resolution and count rate of a far ultraviolet photon-counting imaging detector based on induced charge position-sensitive anode.Guangxue Xuebao/Acta Optica Sinica,34(8).
MLA	Ni Q.."Optimization for spatial resolution and count rate of a far ultraviolet photon-counting imaging detector based on induced charge position-sensitive anode".Guangxue Xuebao/Acta Optica Sinica 34.8(2014).

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