Monitoring mixed neutron-proton field near the primary proton and deuteron beams in spallation targets

Monitoring mixed neutron-proton field near the primary proton and deuteron beams in spallation targets

Článek WoS

At the Joint Institute for Nuclear Research (JINR) we are involved in the Accelerator-Driven-System (ADS) research. We perform experiments with assemblies composed of a spallation target and a subcritical blanket irradiated with high-energy proton or deuteron beams that generate high-energy neutron fields by spallation and fission reactions. In this paper, three uranium assemblies are presented: Energy plus Transmutation (E+T), QUINTA and BURAN. We discuss the results of the E+T and QUINTA irradiations by 1.6 GeV deuterons and 660 MeV protons, respectively. We have focused on the regions close to the primary beam passage through the targets. The field has been measured using activation detectors of 209Bi, 59Co, and natPb. Monte Carlo simulations using MCNPX 2.7.0 have been performed and compared to the experimental results. We discovered that the field intensity near the primary beam is very dependent on the precision of the accelerator beam settings. Therefore, a Monte Carlo-based study of the influence of the uncertainty of primary proton beam parameters on experimental result accuracy of the QUINTA assembly has been carried out. The usage of MCNPX 2.7.0 in the future BURAN irradiations has been assessed.

At the Joint Institute for Nuclear Research (JINR) we are involved in the Accelerator-Driven-System (ADS) research. We perform experiments with assemblies composed of a spallation target and a subcritical blanket irradiated with high-energy proton or deuteron beams that generate high-energy neutron fields by spallation and fission reactions. In this paper, three uranium assemblies are presented: Energy plus Transmutation (E+T), QUINTA and BURAN. We discuss the results of the E+T and QUINTA irradiations by 1.6 GeV deuterons and 660 MeV protons, respectively. We have focused on the regions close to the primary beam passage through the targets. The field has been measured using activation detectors of 209Bi, 59Co, and natPb. Monte Carlo simulations using MCNPX 2.7.0 have been performed and compared to the experimental results. We discovered that the field intensity near the primary beam is very dependent on the precision of the accelerator beam settings. Therefore, a Monte Carlo-based study of the influence of the uncertainty of primary proton beam parameters on experimental result accuracy of the QUINTA assembly has been carried out. The usage of MCNPX 2.7.0 in the future BURAN irradiations has been assessed.

ADS; MCNPX; Proton irradiation; QUINTA; activation foil method

ADS; MCNPX; Proton irradiation; QUINTA; activation foil method

TICHÝ, P.; ADAM, J.; GUSTOV, S.; KUSHVATOV, J.; SOLNYSHKIN, A.; SVOBODA, J.; TYUTYUNNIKOV, S.; ZEMAN, M.

2021

30.04.2020

Council of Scientific & Industrial Research - National Institute of Science Communication and Information Resources

Dr K S Krishnan Marg, New Delhi 110 012, India

0975-1041

INDIAN JOURNAL OF PURE & APPLIED PHYSICS

58

4

Indická republika

282

293

12

http://nopr.niscair.res.in/handle/123456789/54496