Nuclear Techniques ›› 2018, Vol. 41 ›› Issue (3): 30604-030604.doi: 10.11889/j.0253-3219.2018.hjs.41.030604


Shielding calculation of LBE target flow pipeline in ADS

LIU Zhaoqing1,2, ZHAO Zelong1,2, YANG Yongwei1, HONG Shuang1, MENG Haiyan1   

  1. 1. Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China;
    2. University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2017-10-09 Revised:2017-12-27 Online:2018-03-10 Published:2018-03-14
  • Supported by:
    Supported by Strategic Priority Research Program of Chinese Academy of Sciences (No.XDA03030102)

Abstract: [Background] Accelerator driven sub-critical system (ADS) devices use independent loops to cool liquid lead-bismuth eutectic (LBE) spallation targets, spallations produced by the high-energy proton beam irradiating target will continue releasing photons after entering the flow pipe, which may cause radiation damage to the workers nearby the flow pipe. [Purpose] This study aims to obtain the radiation dose equivalent produced by the photons and select the appropriate shielding scheme. [Methods] Accumulative yield of spallation products of a typical Y-type LBE with window target was calculated using the high-energy particle transport program Fluka. The radioactive decay calculation program Origen2 was employed to calculate the photon intensity and population energy spectrum of the spallation product. Then the shielding of flow pipe was assessed by Fluka. [Results] The flow pipe wall should be thickened by 20 cm using lead as the shielding materials according to the GB18871-2002 national standard which requires occupational radioactive workers' annual dose equivalent limit of 20 mSv. [Conclusion] This work provides reference for shielding design of loop of LBE windowed target of ADS.

Key words: ADS, LBE flow pipe, Shielding calculation, Fluka, Origen2

CLC Number: 

  • TL328