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Title: Design and fabrication of prototype 6×6 cm 2 microchannel plate photodetector with bialkali photocathode for fast timing applications

Abstract

Planar microchannel plate-based photodetector with bialkali photocathode is capable of fast and accurate time and position resolutions. A new 6 cm x 6 cm photodetector production facility was designed and built at Argonne National Laboratory. Small form-factor MCP-based photodetectors completely constructed of glass were designed and prototypes were successfully fabricated. Knudsen effusion cells were incorporated in the photocathode growth chamber to achieve uniform and high quantum efficiency hotocathodes. The thin film uniformity distribution was simulated and measured for an antimony film deposition, showing uniformity of better than 10%. Several prototype devices with bialkali photocathodes have been fabricated with the described system and their characteristics were evaluated in the large signal (multi-PE) limit. A typical prototype device exhibits time-of-flight resolution of ~ 27 psec and differential time resolution of ~ 9 psec, corresponding to spatial resolution of ~ 0.65 mm.

Authors:
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Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
OSTI Identifier:
1392554
DOE Contract Number:  
AC02-06CH11357
Resource Type:
Journal Article
Journal Name:
Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment
Additional Journal Information:
Journal Volume: 784; Journal ID: ISSN 0168-9002
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
bialkali photocathode; differential time resolution; effusion cells; microchannel plate; photodetector; spatial resolution; time resolution; uniformity

Citation Formats

Xie, Junqi, Byrum, Karen, Demarteau, Marcel, Gregar, Joseph, May, Edward, Virgo, Mathew, Wagner, Robert, Walters, Dean, Wang, Jingbo, Xia, Lei, and Zhao, Huyue. Design and fabrication of prototype 6×6 cm 2 microchannel plate photodetector with bialkali photocathode for fast timing applications. United States: N. p., 2015. Web. doi:10.1016/j.nima.2014.10.050.
Xie, Junqi, Byrum, Karen, Demarteau, Marcel, Gregar, Joseph, May, Edward, Virgo, Mathew, Wagner, Robert, Walters, Dean, Wang, Jingbo, Xia, Lei, & Zhao, Huyue. Design and fabrication of prototype 6×6 cm 2 microchannel plate photodetector with bialkali photocathode for fast timing applications. United States. doi:10.1016/j.nima.2014.10.050.
Xie, Junqi, Byrum, Karen, Demarteau, Marcel, Gregar, Joseph, May, Edward, Virgo, Mathew, Wagner, Robert, Walters, Dean, Wang, Jingbo, Xia, Lei, and Zhao, Huyue. Mon . "Design and fabrication of prototype 6×6 cm 2 microchannel plate photodetector with bialkali photocathode for fast timing applications". United States. doi:10.1016/j.nima.2014.10.050.
@article{osti_1392554,
title = {Design and fabrication of prototype 6×6 cm 2 microchannel plate photodetector with bialkali photocathode for fast timing applications},
author = {Xie, Junqi and Byrum, Karen and Demarteau, Marcel and Gregar, Joseph and May, Edward and Virgo, Mathew and Wagner, Robert and Walters, Dean and Wang, Jingbo and Xia, Lei and Zhao, Huyue},
abstractNote = {Planar microchannel plate-based photodetector with bialkali photocathode is capable of fast and accurate time and position resolutions. A new 6 cm x 6 cm photodetector production facility was designed and built at Argonne National Laboratory. Small form-factor MCP-based photodetectors completely constructed of glass were designed and prototypes were successfully fabricated. Knudsen effusion cells were incorporated in the photocathode growth chamber to achieve uniform and high quantum efficiency hotocathodes. The thin film uniformity distribution was simulated and measured for an antimony film deposition, showing uniformity of better than 10%. Several prototype devices with bialkali photocathodes have been fabricated with the described system and their characteristics were evaluated in the large signal (multi-PE) limit. A typical prototype device exhibits time-of-flight resolution of ~ 27 psec and differential time resolution of ~ 9 psec, corresponding to spatial resolution of ~ 0.65 mm.},
doi = {10.1016/j.nima.2014.10.050},
journal = {Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment},
issn = {0168-9002},
number = ,
volume = 784,
place = {United States},
year = {2015},
month = {6}
}