The Second LHAASO Collaboration Conference in 2023

Status and Prospect of cosmic rays iron spectrum with energy from 100 TeV to 10 PeV measured by LHAASO

Not scheduled

20m

Tianfu Cosmic Ray Research Center

Poster report(print size: 0.6m Wide*1.2m High)

Speaker

Dr Liqiao Yin

Description

The direct measurements of the proton spectrum show a softening at E ≈ 13 TeV and a similar softening at E ≈ 34.4 TeV on helium spectrum. Whether and where a softening on iron spectrum is very important to study the origin of cosmic rays. LHAASO hybrid observation can select the iron showers with 90% purity. The selection efficiency is 40%. It is expect to complete the measurement of iron spectrum next year.