MCP-based Photodetectors for Cryogenic Applications
Ranjan Dharmapalan, Anil Mane, Karen Byrum, Marcel Demarteau, Jeffrey, Elam, Edward May, Robert Wagner, Dean Walters, Lei Xia, Junqi Xie, Huyue Zhao, and J. Wang
TL;DR
This paper presents the development and testing of MCP-based photodetectors customized for cryogenic environments, including liquid argon, with promising timing and spatial resolution capabilities.
Contribution
It introduces cryogenic-compatible MCP photodetectors with tailored designs and initial testing results, advancing their application in liquid argon detectors.
Findings
Successful fabrication of cryogenic MCP detectors
Achieved pico-second timing resolution
Explored wavelength shifting mitigation strategies
Abstract
The Argonne MCP-based photo detector is an offshoot of the Large Area Pico-second Photo Detector (LAPPD) project, wherein 6 cm x 6 cm sized detectors are made at Argonne National Laboratory. We have successfully built and tested our first detectors for pico-second timing and few mm spatial resolution. We discuss our efforts to customize these detectors to operate in a cryogenic environment. Initial plans aim to operate in liquid argon. We are also exploring ways to mitigate wave length shifting requirements and also developing bare-MCP photodetectors to operate in a gaseous cryogenic environment.
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