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Evaluation of radiation environment in the target area of fragment separator HFRS at HIAF

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Abstract

In this work, the radiation environment in the target area of a fragment separator is evaluated using FLUKA code. The energy deposition in quadrupole coils is presented to provide guidance for a radiation-resistant magnets design. Results show that neutrons dominate in the prompt radiation field. A compact shielding design is recommended for high radiation areas along with the minimization of air activation in the tunnel in order to minimize the radiation effect on nearby beam lines. The displacements per atom results for the graphite target and copper coils indicate that the effect is insignificant. In addition, the activation level of the target is estimated for workers under possible hands-on maintenance condition.

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Authors and Affiliations

  1. Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, 730000, China

    Yao Yang, You-Wu Su, Wu-Yuan Li, Jun-Kui Xu, Chong Xu, Wei-Wei Yan & Wang Mao

  2. University of Chinese Academy of Sciences, Beijing, 100049, China

    Yao Yang

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  1. Yao Yang
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Correspondence to You-Wu Su.

Additional information

This work was supported by the National Key Research and Development Program of China (No. 2017YFC0107700).

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Yang, Y., Su, YW., Li, WY. et al. Evaluation of radiation environment in the target area of fragment separator HFRS at HIAF. NUCL SCI TECH 29, 147 (2018). https://doi.org/10.1007/s41365-018-0479-9

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