Speaker
Jingbo Wang
(Argonne National Laboratory)
Description
The Argonne Microchannel Plate (MCP) Photodetector Group has produced 6cm × 6cm active area MCP photodetectors that feature fabrication with low-cost borosilicate glass, bialkali photocathodes, single photoelectron time resolution of approximately 30ps, and sub-millimeter spatial resolution. We report on the design, fabrication technology, and test results of production runs of an improved design of the detector that allows biasing of each component individually for best optimization. In addition, we have improved the quantum efficiency of the photocathode and report results from this work. The detectors are appealing for applications requiring precision timing and/or spatial resolution including time-of-flight measurement and optical time projection chambers (TPCs) in which tracks are reconstructed using Cherenkov imaging of particles produced in or entering the chamber. Prospects for incorporation into such instrumentation are discussed.
Author
Jingbo Wang
(Argonne National Laboratory)
Co-authors
JUNQI XIE
(Argonne National Laboratory)
Karen Byrum
(Argonne National Lab)
Lei Xia
(Argonne National Laboratory)
Prof.
Marcel Demarteau
(Argonne National Laboratory)
Prof.
Robert Wagner
(Argonne National Laboratory)
