Jul 6 – 13, 2022
Bologna, Italy
Europe/Rome timezone

Low Radioactive Material Screening and Background Estimation for the PandaX-4T Experiment

Jul 8, 2022, 7:05 PM
1h 25m
Bologna, Italy

Bologna, Italy

Palazzo della Cultura e dei Congressi
Poster Dark Matter Poster Session


Mengmeng Wu (SUN YAT-SEN University)


The PandaX-4T experiment, which is aiming to detect dark matter using a liquid xenon detector, is located in the China Jinping Underground Laboratory (CJPL). Various ultralow background technologies are used to control the intrinsic/surface backgrounds, including HPGe gamma spectroscopy, ICP-MS, NAA, radon emanation measurement system, krypton assay station and alpha detection system. Combining measured results and Monte Carlo simulation, electron recoil and nuclear recoil background from material intrinsic radioactivity, radon emanation and krypton are calculated.

In this poster, an overview of the PandaX-4T material screening program, surface background control and background analysis will be presented.

In-person participation No

Primary author

Mengmeng Wu (SUN YAT-SEN University)


Chen Cheng (SUN YAT-SEN University) Lin Si (Shanghai Jiao Tong University ) Zhicheng Qian (Shanghai Jiao Tong University ) Yukun Yao (Shanghai Jiao Tong University )

Presentation materials