XICHANG, July 17 (Xinhua) -- Jinping Mountain, located in the drainage basin of the Yalong River, the largest tributary of Jinsha River, has the highest altitude of 4,410 meters. The China Jinping Underground Laboratory (CJPL) is located in the middle of the 17.5-kilometer-long Jinping tunnel in southwest China's Sichuan Province. The laboratory, inaugurated in 2010, is an underground research facility with a rock overburden of about 2,400 meters.
CJPL-I, the first phase of China Jinping Underground Laboratory (CJPL), has an experimental space of 4000 cubic meters. Since its launch, the China Dark Matter Experiment (CDEX) led by Tsinghua University and the PandaX led by Shanghai Jiaotong University have achieved more than 30 internationally leading dark matter research results.
At present, the construction of the Deep Underground and ultra-low Radiation background Facility for frontier physics experiments (DURF), one of the 10 prior projects of the National Major Science &Technology infrastructure for the 13th Five-Year Plan, which relies on the second phase of the laboratory construction, is under intense construction and is expected to be completed by the end of 2024.
After its completion, the available space of CJPL will reach 300,000 cubic meters and the total construction area of the ground auxiliary experimental platform will be approximately 4,000 square meters. By then, CJPL is expected to be a world-leading deep underground research center and science education base.
This aerial photo taken on July 4, 2023 shows the Jinping tunnel where the China Jinping Underground Laboratory is located and the nearby Yalong River in southwest China's Sichuan Province. (Xinhua/Shen Bohan)
Workers are seen at the construction site of the second phase of China Jinping Underground Laboratory in southwest China's Sichuan Province, July 4, 2023. (Xinhua/Shen Bohan)
Doctor Yang Litao checks the operation of experimental equipment at the China Jinping Underground Laboratory in southwest China's Sichuan Province, July 3, 2023. (Xinhua/Jin Liwang)
Doctor Yang Litao checks the operation of experimental equipment at the China Jinping Underground Laboratory in southwest China's Sichuan Province, July 3, 2023. (Xinhua/Shen Bohan)
Doctor Yang Litao (L) and researcher Nie Qiyuan discuss on experimental data at the China Jinping Underground Laboratory in southwest China's Sichuan Province, July 3, 2023. (Xinhua/Shen Bohan)
Doctor Yang Litao checks experimental data at the China Jinping Underground Laboratory in southwest China's Sichuan Province, July 3, 2023. (Xinhua/Shen Bohan)
Doctor Yang Litao checks equipment inside a one-meter-thick polythene door at the China Jinping Underground Laboratory in southwest China's Sichuan Province, July 3, 2023. (Xinhua/Shen Bohan)
Doctor Yang Litao (L) and researcher Nie Qiyuan discuss on experimental data at the China Jinping Underground Laboratory in southwest China's Sichuan Province, July 3, 2023. (Xinhua/Shen Bohan)
Researcher Nie Qiyuan checks experimental data at the China Jinping Underground Laboratory in southwest China's Sichuan Province, July 3, 2023. (Xinhua/Jin Liwang)
Researcher Wang Yufeng pours liquid nitrogen into a pot at the China Jinping Underground Laboratory in southwest China's Sichuan Province, July 3, 2023. (Xinhua/Jin Liwang)
Doctor Yang Litao (1st R) discusses with researchers at the China Jinping Underground Laboratory in southwest China's Sichuan Province, July 3, 2023. (Xinhua/Shen Bohan)
Researchers pour liquid nitrogen into a pot for experiment at the China Jinping Underground Laboratory in southwest China's Sichuan Province, July 3, 2023. (Xinhua/Shen Bohan)
Doctor Yang Litao (R) works with researchers Liang Yifan (L) and Wang Yufeng at the China Jinping Underground Laboratory in southwest China's Sichuan Province, July 3, 2023. (Xinhua/Shen Bohan)
Researchers do experiment at the China Jinping Underground Laboratory in southwest China's Sichuan Province, July 3, 2023. (Xinhua/Shen Bohan)
Researcher Jing Mingkun checks experimental data at the China Jinping Underground Laboratory in southwest China's Sichuan Province, July 3, 2023. (Xinhua/Shen Bohan)
Doctor Yang Litao checks a hypothermia liquid nitrogen shielding device at the C1 hall of the second phase of the China Jinping Underground Laboratory in southwest China's Sichuan Province, July 4, 2023. (Xinhua/Jin Liwang)
A water-and-radon-proof layer is seen on the wall of the C hall of the second phase of China Jinping Underground Laboratory in southwest China's Sichuan Province, July 4, 2023. (Xinhua/Jin Liwang)
Researchers of the China Dark Matter Experiment (CDEX) pose for a group photo outside the first phase of the China Jinping Underground Laboratory in southwest China's Sichuan Province, July 3, 2023. (Xinhua/Shen Bohan)
Produced by Xinhua Global Service■
