Design and simulation of a thermal neutron beam for neutron capture studies at the Dalat research reactor

Author affiliations

Authors

  • Trinh Thi Tu Anh The University of Dalat, 01 Phu Dong Thien Vuong, Dalat, Lam Dong, Vietnam
  • Pham Dang Quyet The University of Dalat, 01 Phu Dong Thien Vuong, Dalat, Lam Dong, Vietnam https://orcid.org/0000-0002-8984-7747
  • Pham Ngoc Son Nuclear Research Institute, 01 Nguyen Tu Luc, Dalat, Lam Dong, Vietnam https://orcid.org/0000-0002-4489-9957
  • Phan Bao Quoc Hieu Nuclear Research Institute, 01 Nguyen Tu Luc, Dalat, Lam Dong, Vietnam https://orcid.org/0000-0001-9279-0027
  • Nguyen Thi Minh Sang The University of Dalat, 01 Phu Dong Thien Vuong, Dalat, Lam Dong, Vietnam
  • Cao Dong Vu Nuclear Research Institute, 01 Nguyen Tu Luc, Dalat, Lam Dong, Vietnam https://orcid.org/0000-0002-6486-1059

DOI:

https://doi.org/10.15625/0868-3166/17445

Keywords:

MCNP, design, crystal Al2O3, sapphire, thermal neutron flux

Abstract

This paper presents the application of the MCNP5 code to conduct a modification design and simulation of a thermal neutron beam for neutron capture studies at the Dalat Nuclear Research Reactor (DNRR). The designed configuration of the horizontal neutron channel No.2 at the DNRR, which contains a conical collimator of 240.3 cm in length, and neutron filters of crystal Al2O3 and Bi with alternative thickness, were simulated. A pure thermal neutron beam can be obtained at the irradiation position when a composition of crystal filter of 20 cm Al2O3 and 6 cm Bi is employed. The thermal and epithermal neutron fluxes are 1.02´108 n/cm2/s (account for 97.92% of total neutron flux) and 0.22´107 n/cm2/s (account for 2.08% of total neutron flux), respectively.

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References

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Published

23-04-2023

How to Cite

[1]
A. Trinh Thi Tu, Q. Pham Dang, S. Pham Ngoc, H. Phan Bao Quoc, S. Nguyen Thi Minh and V. Cao Dong, Design and simulation of a thermal neutron beam for neutron capture studies at the Dalat research reactor, Comm. Phys. 33 (2023) 185. DOI: https://doi.org/10.15625/0868-3166/17445.

Issue

Vol. 33 No. 2 (2023)

Section

Papers

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Received 22-08-2022
Accepted 14-02-2023
Published 23-04-2023