Design and fabrication of prototype 6×6 cm2 microchannel plate photodetector with bialkali photocathode for fast timing applications

Junqi Xie; Karen Byrum; Marcel Demarteau; Joseph Gregar; Edward May; Mathew Virgo; Robert Wagner; Dean Walters; Jingbo Wang; Lei Xia; Huyue Zhao

doi:10.1016/j.nima.2014.10.050

Design and fabrication of prototype 6×6 cm² microchannel plate photodetector with bialkali photocathode for fast timing applications

Junqi Xie
, Karen Byrum
, Marcel Demarteau
, Joseph Gregar
, Edward May
, Mathew Virgo
, Robert Wagner
, Dean Walters
, Jingbo Wang
, Lei Xia
, Huyue Zhao

Research output: Contribution to journal › Article › peer-review

9 Scopus citations

Abstract

Planar microchannel plate-based photodetectors with a bialkali photocathode are able to achieve photon detection with very good time and position resolution. A 6×6 cm² photodetector production facility was designed and built at Argonne National Laboratory. Small form-factor MCP-based photodetectors completely constructed out 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 photocathodes. The thin film uniformity 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.

Original language	English
Pages (from-to)	242-247
Number of pages	6
Journal	Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume	784
DOIs	https://doi.org/10.1016/j.nima.2014.10.050
State	Published - Jun 1 2015
Externally published	Yes

Funding

The authors would like to thank Ronald Kmak, designer at ANL, for his work on the chamber design. The authors also would like to thank SVT Associates, Inc. (SVTA) for helps on Knudsen effusion cell design. Work at Argonne National Laboratory was supported by the U. S. Department of Energy, Office of Science, Office of Basic Energy Sciences and Office of High Energy Physics under contract DE-AC02-06CH11357 . Use of the Center for Nanoscale Materials was supported by the U. S. Department of Energy, Office of Science, Office of Basic Energy Sciences , under Contract No. DE-AC02-06CH11357 .

Keywords

Bialkali photocathode
Differential time resolution
Effusion cells
Microchannel plate
Photodetector
Spatial resolution
Time resolution
Uniformity

Access to Document

10.1016/j.nima.2014.10.050

Cite this

Xie, J., Byrum, K., Demarteau, M., Gregar, J., May, E., Virgo, M., Wagner, R., Walters, D., Wang, J., Xia, L., & Zhao, H. (2015). Design and fabrication of prototype 6×6 cm² microchannel plate photodetector with bialkali photocathode for fast timing applications. Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 784, 242-247. https://doi.org/10.1016/j.nima.2014.10.050

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abstract = "Planar microchannel plate-based photodetectors with a bialkali photocathode are able to achieve photon detection with very good time and position resolution. A 6×6 cm2 photodetector production facility was designed and built at Argonne National Laboratory. Small form-factor MCP-based photodetectors completely constructed out 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 photocathodes. The thin film uniformity 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 \textasciitilde{}27 psec and differential time resolution of \textasciitilde{}9 psec, corresponding to spatial resolution of \textasciitilde{}0.65 mm.",

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author = "Junqi Xie and Karen Byrum and Marcel Demarteau and Joseph Gregar and Edward May and Mathew Virgo and Robert Wagner and Dean Walters and Jingbo Wang and Lei Xia and Huyue Zhao",

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Xie, J, Byrum, K, Demarteau, M, Gregar, J, May, E, Virgo, M, Wagner, R, Walters, D, Wang, J, Xia, L & Zhao, H 2015, 'Design and fabrication of prototype 6×6 cm² microchannel plate photodetector with bialkali photocathode for fast timing applications', Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, vol. 784, pp. 242-247. https://doi.org/10.1016/j.nima.2014.10.050

Design and fabrication of prototype 6×6 cm² microchannel plate photodetector with bialkali photocathode for fast timing applications. / Xie, Junqi; Byrum, Karen; Demarteau, Marcel et al.
In: Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 784, 01.06.2015, p. 242-247.

Research output: Contribution to journal › Article › peer-review

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AU - Gregar, Joseph

AU - May, Edward

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AU - Wagner, Robert

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AU - Xia, Lei

AU - Zhao, Huyue

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N2 - Planar microchannel plate-based photodetectors with a bialkali photocathode are able to achieve photon detection with very good time and position resolution. A 6×6 cm2 photodetector production facility was designed and built at Argonne National Laboratory. Small form-factor MCP-based photodetectors completely constructed out 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 photocathodes. The thin film uniformity 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.

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ER -

Xie J, Byrum K, Demarteau M, Gregar J, May E, Virgo M et al. Design and fabrication of prototype 6×6 cm² microchannel plate photodetector with bialkali photocathode for fast timing applications. Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 2015 Jun 1;784:242-247. doi: 10.1016/j.nima.2014.10.050