  Radon is a significant background source in rare event detection experiments.
Activated Carbon (AC) adsorption is widely used for effective radon removal.
The selection of AC considers its adsorption capacity and radioactive
background. In this study, using self-developed devices, we screened and
identified a new kind of low-background AC from Qingdao Inaf Technology Company
that has very high Radon adsorption capacity. By adjusting the average pore
size to 2.3 nm, this AC demonstrates a radon adsorption capacity of 2.6 or 4.7
times higher than Saratech or Carboact activated carbon under the same
conditions.
