Ultrafast X-Ray Detector and its Gain Uniformity
An ultrafast x-ray detector consisted of an electron pulse time-dilation device, a combined electromagnetic lens system, a microchannel plate (MCP) gated imager, and an electrical pulse generator is reported. The time-dilation device is used to magnify the temporal width of the electron beam created...
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doaj-0985df8d9fa14f3b962ab5ffa67aefb62021-03-29T23:57:28ZengIEEEIEEE Access2169-35362019-01-01715855715856210.1109/ACCESS.2019.29505568887151Ultrafast X-Ray Detector and its Gain UniformityHouzhi Cai0https://orcid.org/0000-0003-4140-5824Pokun Deng1Wenyong Fu2Dong Wang3Jinyuan Liu4Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, Shenzhen University, Shenzhen, ChinaKey Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, Shenzhen University, Shenzhen, ChinaKey Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, Shenzhen University, Shenzhen, ChinaKey Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, Shenzhen University, Shenzhen, ChinaKey Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, Shenzhen University, Shenzhen, ChinaAn ultrafast x-ray detector consisted of an electron pulse time-dilation device, a combined electromagnetic lens system, a microchannel plate (MCP) gated imager, and an electrical pulse generator is reported. The time-dilation device is used to magnify the temporal width of the electron beam created from the photo-cathode (PC), and then the combined electromagnetic lens system images the dilated electron beam onto the MCP. Finally, the MCP imager samples the dilated electron signal and outputs corresponding visible light. A measured temporal resolution of 80 ps for the detector is achieved while the electron pulse is not dilated. The resolution is improved to 12 ps while an excitation pulse with 3.1 V/ps rising edge gradient is used to drive the PC to dilate the electron pulse. Moreover, the gain uniformity of the detector is also tested, which shows the gain is decreased gradually with the excitation pulse propagating on the PC and the drop in gain is about 1.7 ×.https://ieeexplore.ieee.org/document/8887151/Gain uniformitypulse-dilationtemporal resolutionx-ray detector |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Houzhi Cai Pokun Deng Wenyong Fu Dong Wang Jinyuan Liu |
spellingShingle |
Houzhi Cai Pokun Deng Wenyong Fu Dong Wang Jinyuan Liu Ultrafast X-Ray Detector and its Gain Uniformity IEEE Access Gain uniformity pulse-dilation temporal resolution x-ray detector |
author_facet |
Houzhi Cai Pokun Deng Wenyong Fu Dong Wang Jinyuan Liu |
author_sort |
Houzhi Cai |
title |
Ultrafast X-Ray Detector and its Gain Uniformity |
title_short |
Ultrafast X-Ray Detector and its Gain Uniformity |
title_full |
Ultrafast X-Ray Detector and its Gain Uniformity |
title_fullStr |
Ultrafast X-Ray Detector and its Gain Uniformity |
title_full_unstemmed |
Ultrafast X-Ray Detector and its Gain Uniformity |
title_sort |
ultrafast x-ray detector and its gain uniformity |
publisher |
IEEE |
series |
IEEE Access |
issn |
2169-3536 |
publishDate |
2019-01-01 |
description |
An ultrafast x-ray detector consisted of an electron pulse time-dilation device, a combined electromagnetic lens system, a microchannel plate (MCP) gated imager, and an electrical pulse generator is reported. The time-dilation device is used to magnify the temporal width of the electron beam created from the photo-cathode (PC), and then the combined electromagnetic lens system images the dilated electron beam onto the MCP. Finally, the MCP imager samples the dilated electron signal and outputs corresponding visible light. A measured temporal resolution of 80 ps for the detector is achieved while the electron pulse is not dilated. The resolution is improved to 12 ps while an excitation pulse with 3.1 V/ps rising edge gradient is used to drive the PC to dilate the electron pulse. Moreover, the gain uniformity of the detector is also tested, which shows the gain is decreased gradually with the excitation pulse propagating on the PC and the drop in gain is about 1.7 ×. |
topic |
Gain uniformity pulse-dilation temporal resolution x-ray detector |
url |
https://ieeexplore.ieee.org/document/8887151/ |
work_keys_str_mv |
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