| Issue |
EPJ Web Conf.
Volume 283, 2023
Ultra High Energy Cosmic Rays (UHECR 2022)
|
|
|---|---|---|
| Article Number | 02002 | |
| Number of page(s) | 10 | |
| Section | Energy Spectrum and Mass Composition | |
| DOI | https://doi.org/10.1051/epjconf/202328302002 | |
| Published online | 28 April 2023 | |
https://doi.org/10.1051/epjconf/202328302002
LHAASO on Cosmic Ray Knees
1 Key Laboratory of Particle Astrophyics, Institute of High Energy Physics, Chinese Academy of Sciences, 100049 Beijing, China
2 University of Chinese Academy of Sciences, 100049 Beijing, China
3 Tianfu Cosmic Ray Research Center, Chengdu, Sichuan, China
* Corresponding author: caozh@ihep.ac.cn
Published online: 28 April 2023
LHAASO construction was complete in July 2021. The full array is operating very stably since then. All arrays, KM2A, WCDA and WFCTA are calibrated, including the absolute energy scale at 21 TeV, which was measured by using WCDA and propagated to WFCTA, with the uncertainty will be reduced down <10% in 4 years. The knee of pure proton spectrum will be measured in the first phase of the hybrid measurements of showers using four types of EAS detection techniques started in 2019 winter. Sufficient data have been collected and the analysis is in progress. Since the last run, the second phase were started in 2021 winter. The knee of the iron spectrum is the goal which will take at least 3 years of data collection. CR all-particle spectrum, composition and anisotropy are under analysis.
© The Authors, published by EDP Sciences, 2023
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