Abstract：

The TES microcalorimeter has an energy resolution at the eV level and a wide range of absorber material options, which meet the requirements for β decay energy spectrum measurement. Firstly, I will report that based on this detector, we have precisely measured the energy spectrum structure of Pb210's β decay at 0 keV, which provides important references for dark matter detection, solar axions, and neutrino energy spectra. Then, I will introduce the precise measurement plan for the β energy spectra of In115 and Co60. Finally, we will focus on introducing the measurement scheme for neutron two-body decay based on TES microcalorimeter and discuss the detector structure design. We look forward to the help of experts to optimize the scheme. Successfully observe the signal of neutron two-body decay in the near future is very important, based on neutron two-body decay, we can make precise measurements of the fundamental physical properties of neutrons and neutrinos.

Biography：

Undergraduate: Lanzhou University       major: Nuclear Physics

PHD: Institute of High Energy Physics   major: Particle Physics and Nuclear Physics

2014/10-2016/09 :Visiting Scholar, Department of Physics, University of Wisconsin-Madison,  Prof. Dan MacCammon

2017/11-2024/09 : ShanghaiTech University, Associate Research Fellow

2024/10-now      : Advanced Energy Science and Technology Guangdong Laboratory, Research Fellow

Research areas: microcalorimeter, high energy astrophysics, X/γ-ray spectroscopy, β-decay spectroscopy