RADIATION PROTECTION ›› 2023, Vol. 43 ›› Issue (6): 542-548.

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Study on the diamond dose measurement device for X-rays generated from ultrashort and ultra-intense laser facility

SONG Honghu1,2, WU Zhen1,2, QIU Rui1,2, WEI Shuoyang1,2, GONG Hui1,2, ZHANG Hui1,2, LI Junli1,2   

  1. 1. Department of Engineering Physics, Tsinghua University, Beijing 100084;
    2. Key Laboratory of Particle & Radiation Imaging (Tsinghua University), Ministry of Education, Beijing 100084
  • Received:2022-09-19 Online:2023-11-20 Published:2023-12-25

Abstract: An active dose measurement device based on a diamond detector was developed by our research group, and its performance was further studied. Monte Carlo software FLUKA was used to model the device. Energy and angular response simulations were performed based on the model. The device was calibrated in China National Institute of Metrology. Energy response and dose rate response calibration of the device was conducted by using 137Cs and 60Co. 137Cs is used for the angular response calibration of the device. The results showed that the output current of the device was linear with the dose rate, and no obvious saturation phenomenon was observed. The device has a good angular response to 137Cs, with the maximum variation less than 18%. Related verification experiments were carried out based on 3 MV and 6 MV electron pulse accelerator and “XG-III” laser facility. The results given by the device were consistent with Unidos dosimeter and TLD detectors, with maximum deviation less than 7% and 35%, respectively. Based on the above simulation and experiments, the feasibility of applying this device to real-time dose measurement of pulsed radiation field induced by ultra-short and ultra-intense laser facility is further verified, which provides an alternative for dosimetric method of such pulsed radiation field.

Key words: ultrashort and ultra-intense laser, X-ray, dose, active mode

CLC Number: 

  • TL817