Design of detector to monitor the Bragg peak location of carbon ions by means of prompt <italic style="font-style: italic">γ</italic>-ray measurements with Geant4

Yan Fan; Guang-Ming Huang; Xiang-Ming Sun; Zhen Wang; Shu-Guang Zou; Jun Liu; Dong Wang; Hui-Li Kang; Ping Yang; Hua Pei; Da-Ming Sun; Zi-Li Li

doi:10.1007/s41365-018-0388-y

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Design of detector to monitor the Bragg peak location of carbon ions by means of prompt γ-ray measurements with Geant4

NUCLEAR ELECTRONICS AND INSTRUMENTATION | Updated：2021-02-07

- Design of detector to monitor the Bragg peak location of carbon ions by means of prompt γ-ray measurements with Geant4
- Nuclear Science and Techniques Vol. 29, Issue 4, Article number: 48(2018)
- Affiliations：
  
  1.PLAC, Key Laboratory of Quark & Lepton Physics (MOE), Department of Physics Science and Technology, Central China Normal University, Hubei 430079, China
- Author bio：
  
  fyanf@mails.ccnu.edu.cn
  gmhuang@phy.ccnu.edu.cn
  xmsun@phy.ccnu.edu.cn
- Funds：
- DOI：10.1007/s41365-018-0388-y
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Yan Fan, Guang-Ming Huang, Xiang-Ming Sun, et al. Design of detector to monitor the Bragg peak location of carbon ions by means of prompt γ-ray measurements with Geant4. [J]. Nuclear Science and Techniques 29(4):48(2018)
DOI：

Yan Fan, Guang-Ming Huang, Xiang-Ming Sun, et al. Design of detector to monitor the Bragg peak location of carbon ions by means of prompt γ-ray measurements with Geant4. [J]. Nuclear Science and Techniques 29(4):48(2018) DOI： 10.1007/s41365-018-0388-y.

摘要

Abstract

Real-time monitoring of the Bragg peak location of carbon ions is urgently required for the quality control of hadron therapy. In this study, we design an annular detector to monitor the Bragg peak location of carbon ions with Geant4 simulation. This 360° surrounding structure has a high detection efficiency for the small-dose situation. The detector consists of a multi-layered collimator system and an NaI scintillator for prompt gamma counting. The multi-layered collimator includes a lead layer to prevent unwanted gammas and the paraffin and boron carbide layers to moderate and capture fast neutrons. An inclination of the detector further diminishes the background signal caused by neutrons. The detector, with optimized parameters, is applicable to carbon ions of different energies. In addition, the scintillator is replaced by an improved EJ301 organic liquid scintillator to discriminate gammas and neutrons. Inserting thin Fe slices into the liquid scintillator improves the energy deposition efficiency. The Bragg peak location of 200 MeV/u carbon ions can be monitored by prompt gamma detection with the improved liquid scintillator.

关键词

Keywords

Bragg peakcarbon ionprompt γ-rayGeant4

references

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Key Laboratory of Nuclear Physics and Ion‑Beam Application (MOE), Institute of Modern Physics, Fudan University

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Institute of Plasma Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences

University of Science and Technology of China

Institute of Energy, Hefei Comprehensive National Science Center (Anhui Energy Laboratory)

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Design of detector to monitor the Bragg peak location of carbon ions by means of prompt γ-ray measurements with Geant4

DOI：10.1007/s41365-018-0388-y

摘要

Abstract

关键词

Keywords

references