Mass production and performance study on the 20-inch PMT acrylic protection covers in JUNO
Journal of Instrumentation(2024)
摘要
The Jiangmen Underground Neutrino Observatory is a neutrino experiment that
incorporates 20,012 20-inch photomultiplier tubes (PMTs) and 25,600 3-inch
PMTs. A dedicated system was designed to protect the PMTs from an implosion
chain reaction underwater. As a crucial element of the protection system, over
20,000 acrylic covers were manufactured through injection molding, ensuring
high dimensional precision, mechanical strength, and transparency. This paper
presents the manufacturing technology, mass production process, and performance
characteristics of the acrylic covers.
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