The 2 PW/1 Hz laser system for laser-driven proton tumor therapy facility CLAPA- <i>II</i> : Compact laser plasma accelerator II
In this paper, we report the recent progress on the 2 PW/1 Hz laser system for laser-driven proton tumor therapy facility CLAPA-II [Kedong et al., Phys. Rev. Accel. Beams 23, 111302 (2020)], and the system is currently capable of outputting a maximum single-pulse laser energy of 71.9 J, a pulse width of 29 fs, and a peak power of 2.48 PW for high-power fs lasers. In terms of laser quality parameters, ps contrast is better than 1012, and ns contrast is 2 × 1010. In terms of laser stability, the horizontal and vertical angular pointing fluctuations over 500 shots were measured to be 1.04 and 0.797 μrad, respectively. The device has currently been deployed in laser acceleration experiments.
Authors
- Philippe Fichot
- Alain Pellegrina
- Olivier Chalus (ORCID: https://orcid.org/0000-0002-9552-1903)
- Hailong Zhang (ORCID: https://orcid.org/0000-0002-8951-7094)
- G. Rey
- Yanying Zhao
- Vincent Leroux
- Chang Liu
- Minjian Wu
- Xueqing Yan
- Yixing Geng
Institutions
- Peking University (CN)
- Thales (Australia) (AU)
- State Key Laboratory of Nuclear Physics and Technology
Publication Details
- Journal
- Review of Scientific Instruments
- Published
- 2026-05-01
- DOI
- https://doi.org/10.1063/5.0322895
- Primary Topic
- Laser-Plasma Interactions and Diagnostics
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- National Natural Science Foundation of China
- China Postdoctoral Science Foundation
- Beijing Municipal Science and Technology Commission
- National Key Research and Development Program of China