Human radiological safety assessment for petawatt laser-driven ion acceleration experiments in CLAPA-T

Zhang Xiaopeng; Zhao Jiarui; Xu Shengxuan; Chen Xun; Gao Ying; Chen Shiyou; Zhu Kun; Yan Xueqing; Ma Wenjun

doi:10.1063/5.0172687

Volume 9 Issue 4

Jul. 2024

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Zhang Xiaopeng, Zhao Jiarui, Xu Shengxuan, Chen Xun, Gao Ying, Chen Shiyou, Zhu Kun, Yan Xueqing, Ma Wenjun. Human radiological safety assessment for petawatt laser-driven ion acceleration experiments in CLAPA-T[J]. Matter and Radiation at Extremes, 2024, 9(4): 047201. doi: 10.1063/5.0172687

Citation:

Zhang Xiaopeng, Zhao Jiarui, Xu Shengxuan, Chen Xun, Gao Ying, Chen Shiyou, Zhu Kun, Yan Xueqing, Ma Wenjun. Human radiological safety assessment for petawatt laser-driven ion acceleration experiments in CLAPA-T[J]. Matter and Radiation at Extremes, 2024, 9(4): 047201. doi: 10.1063/5.0172687

Citation:

Zhang Xiaopeng, Zhao Jiarui, Xu Shengxuan, Chen Xun, Gao Ying, Chen Shiyou, Zhu Kun, Yan Xueqing, Ma Wenjun. Human radiological safety assessment for petawatt laser-driven ion acceleration experiments in CLAPA-T[J]. Matter and Radiation at Extremes, 2024, 9(4): 047201. doi: 10.1063/5.0172687

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Human radiological safety assessment for petawatt laser-driven ion acceleration experiments in CLAPA-T

doi: 10.1063/5.0172687

Zhang Xiaopeng^{1, 2},
Zhao Jiarui^{1, 3, 4
,
,
,},
Xu Shengxuan^{2, 3},
Chen Xun^{1, 3},
Gao Ying^{1, 3
,},
Chen Shiyou^{1, 3},
Zhu Kun^{1, 3, 4},
Yan Xueqing^{2, 3, 4},
Ma Wenjun^{1, 3, 4
,
,}

1.
State Key Laboratory of Nuclear Physics and Technology, and Key Laboratory of HEDP of the Ministry of Education, CAPT, Peking University, Beijing 100871, China
2.
Key Laboratory of Particle Astrophysics, Institute of High Energy Physics, CAS, Beijing 100049, China
3.
Beijing Laser Acceleration Innovation Center, Huairou, Beijing 101400, China
4.
Institute of Guangdong Laser Plasma Technology, Baiyun, Guangzhou 510540, China

More Information

Author Bio:
Electronic mail: wenjun.ma@pku.edu.cn
Corresponding author: a)Author to whom correspondence should be addressed: jrzhao@pku.edu.cn
Received Date: 2023-08-17
Accepted Date: 2024-03-17

Available Online: 2024-07-01

Publish Date: 2024-07-01

Abstract

Abstract

The newly built Compact Laser Plasma Accelerator–Therapy facility at Peking University will deliver 60 J/1 Hz laser pulses with 30 fs duration. Driven by this petawatt laser facility, proton beams with energy up to 200 MeV are expected to be generated for tumor therapy. During high-repetition operation, both prompt radiation and residual radiation may cause safety problems. Therefore, human radiological safety assessment before commissioning is essential. In this paper, we simulate both prompt and residual radiation using the Geant4 and FLUKA Monte Carlo codes with reasonable proton and as-produced electron beam parameters. We find that the prompt radiation can be shielded well by the concrete wall of the experimental hall, but the risk from residual radiation is nonnegligible and necessitates adequate radiation cooling. On the basis of the simulation results, we discuss the constraints imposed by radiation safety considerations on the annual working time, and we propose radiation cooling strategies for different shooting modes.

Conflict of Interest
The authors have no conflicts to disclose.
Author Contributions
Xiaopeng Zhang: Data curation (lead); Formal analysis (lead); Software (lead); Visualization (lead); Writing – original draft (equal); Writing – review & editing (equal). Jiarui Zhao: Conceptualization (lead); Data curation (equal); Formal analysis (equal); Funding acquisition (equal); Investigation (equal); Methodology (equal); Project administration (lead); Supervision (equal); Writing – original draft (lead); Writing – review & editing (lead). Shengxuan Xu: Investigation (equal); Visualization (equal). Xun Chen: Formal analysis (equal); Investigation (equal); Methodology (equal). Ying Gao: Conceptualization (equal); Investigation (equal). Shiyou Chen: Investigation (equal); Methodology (equal); Software (equal). Kun Zhu: Conceptualization (equal); Supervision (equal). Xueqing Yan: Conceptualization (equal); Project administration (equal); Supervision (equal). Wenjun Ma: Conceptualization (lead); Funding acquisition (lead); Investigation (equal); Methodology (equal); Project administration (equal); Supervision (lead); Writing – original draft (equal); Writing – review & editing (equal).
X.P.Z. and J.R.Z. contributed equally to this work. X.P.Z., J.R.Z., and W.J.M. conceived of the paper. X.P.Z. and J.R.Z. constructed the simulations and wrote the original manuscript. W.J.M. reformatted the manuscript for publication. All other authors contributed to the discussion of the results.
The data that support the findings of this study are available within the article.

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References(34)

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