The Chinese must be serious about finding DM

[BeAChooser]

... or it could be cover for yet another underground military facility.

In any case ...

https://www.chinadaily.com.cn/a/202312/ ... f1ebc.html

CHENGDU -- A 2,400-meter-deep physics laboratory in Southwest China's Sichuan province became operational on Thursday, making it the deepest and largest underground lab in the world.

Scientists believe the laboratory provides a "clean" space for them to pursue the invisible substance known as dark matter. They said the extreme depth helps block most cosmic rays that mess with the observation.

The Deep Underground and Ultra-low Radiation Background Facility for Frontier Physics Experiments (DURF) is located beneath Jinping Mountain in Sichuan's Liangshan Yi autonomous prefecture.

The DURF, with a total room capacity of 330,000 cubic meters, is the second phase of China Jinping Underground Laboratory. It started construction in December 2020 and was jointly built by Tsinghua University and Yalong River Hydropower Development Company Ltd.

Cost? About 200 million dollars. Getting down that deep and moving 330,000 cubic meters of rock in just 3 years is no small task. But then the Chinese have gotten rather good at building deep underground facilities.

At least we knew about this lab. The one in California where they were working on Covid and other dangerous diseases? We didn’t know about that until some low level building code officer noticed a green garden hose sticking out of a hole at the location.

Just saying …

[Cargo]

And that(C.lab) was a just temporary location they moved all the stuff too. We don't know what/where their original lab was. Just saying, so I heard.

[Demosophist]

Cost? About 200 million dollars. Getting down that deep and moving 330,000 cubic meters of rock in just 3 years is no small task. But then the Chinese have gotten rather good at building deep underground facilities.

At least we knew about this lab. The one in California where they were working on Covid and other dangerous diseases? We didn’t know about that until some low level building code officer noticed a green garden hose sticking out of a hole at the location.

Just saying …

$200 million is about the cost of a nice bungalow in the NJ suburbs.

[BeAChooser]

More …

https://news.yahoo.com/china-opens-worl ... 20665.html

The China Jinping Underground Laboratory-II (CJPL-II) laboratory in southwest China's Sichuan Province opened in December 2023, an expansion of the original CJPL facility, which was first launched in 2010.

CJPL-II stands at 7,874 feet underground with a surface area of more than 11.6 million cubic feet … snip … That makes it bigger than Italy's Gran Sasso National Laboratory, which previously held the record

… snip …

CJPL hosts the Particle and Astrophysical Xenon Experiments (PandaX) and the China Dark Matter Experiment.

PandaX now sits inside a water tank of about 32,000 cubic feet to protect its 8,800 pounds of liquid xenon detector from background interference. That's a big improvement on their previous detector, which only held 264 pounds of liquid xenon.

This upgrade puts PandaX-4T in a similar league to the detectors in Italy and at the Sanford Underground Research Facility in Lead, South Dakota, per Nature News.

And when they don’t find anything?

Oh well … it’s just money.