江门中微子实验 / Jiangmen Underground Neutrino Observatory

The Jiangmen Underground Neutrino Observatory is a central project case in EP248 在高原与地下，探寻中国“大科学项目”. The episode describes it as a 700-meter underground laboratory built to study neutrinos while reducing cosmic-ray interference.

The project makes [[WeakSignalDetection|weak-signal detection]] concrete. The source explains that neutrino experiments need both a controlled signal source and a quiet environment, so the Jiangmen site combines underground shielding, proximity to nuclear reactors, a roughly 55-60 km reactor-distance baseline, and a large detector structure.

The episode’s strongest physical image is the detector system: a giant sphere intended for tens of thousands of tons of liquid scintillator, placed inside a large high-purity-water pool. [[MiaoQian|苗千]] also emphasizes the engineering reality around the science, including underground excavation, rock conditions, and much higher-than-expected water pumping.

Connections

• EP248 在高原与地下，探寻中国“大科学项目” and 苗千 / Miao Qian - source and reporter context.
• Big Science Infrastructure / 大科学基础设施, Weak Signal Detection / 微弱信号探测, and Extreme Environment Physics / 极端环境物理 - main conceptual frames.
• Big Science Technology Spillover / 大科学技术外溢 - source examples around acrylic material strength and photomultiplier-tube development.
• Science Engineering Aesthetics / 科学工程美感 - visual and bodily scale of the underground detector.