Speaker
Dr
Karen Byrum
(Argonne National Laboratory)
Description
Microchannel plate (MCP) based photodetectors feature fast timing, good position resolution and a compact form factor. We report detailed design, fabrication and characterization of a low-cost 6 cm x 6 cm fast timing photodetector based on microchannel plates. The whole assembly is made of low cost glass materials and hermetically sealed with bialkali photocathode in vacuum. A prototype MCP-photodetector exhibits gain over 10^7 level with good uniformity and photocathode quantum efficiency as high as 20%. The timing resolution reaches 20 ps and 70 ps at multi-PE and single-PE measurements, respectively. The spatial resolution reaches 0.5 mm at multi-PE measurement. Challenges and future improvements will also be presented and discussed.
Primary authors
Dr
Junqi Xie
(Argonne National Laboratory)
Dr
Karen Byrum
(Argonne National Laboratory)
Co-authors
Dr
Dean Walters
(Argonne National Laboratory)
Mr
Edward May
(Argonne National Laboratory)
Dr
Huyne Zhao
(Argonne National Laboratory)
Dr
Jingbo Wang
(Argonne National Laboratory)
Dr
Lei Xia
(Argonne National Laboratory)
Dr
Marcel Demarteau
(Argonne National Laboratory)
Dr
Robert Wagner
(Argonne National Laboratory)
