Measurement of the neutron angular distribution from a beryllium target bombarded with a 345-MeV/u 238U beam at the RIKEN RI beam factory

Nakao, Noriaki; Uwamino, Yoshitomo; Tanaka, K.

doi:10.1016/j.nimb.2018.02.036

Cited by 4 publications

(1 citation statement)

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“…The streaming neutrons through the maze were measured by activation detectors composed of aluminum (2.7 g/cm 3 , 99.99% purity), which is widely used in high-energy neutron measurements [8]. Two sizes of the aluminum (ϕ 8.0 cm × t 1.0 cm and ϕ 4.0 cm × t 0.4 cm, where ϕ is the diameter and t is the thickness) were used depending on the neutron intensity in the corresponding locations.…”

Section: Activation Detectors and Experimental Setupmentioning

confidence: 99%

Measurements and Monte Carlo simulations of high-energy neutron streaming through the access maze using activation detectors at 24 GeV/c proton beam facility of CERN/CHARM

Nakao

Kajimoto

Sanami

et al. 2021

Journal of Nuclear Science and Technology

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A measurement of high-energy neutron streaming was performed through a maze at the CERN (Conseil Européen pour la Recherche Nucléaire) High-energy AcceleRator Mixed-field (CHARM) facility. The protons of 24 GeV/c were injected onto a 50-cm-thick copper target and the released neutrons were streamed through a maze with several corridor-legs horizontally designed with the shield walls in the facility. Streaming neutrons were measured by using aluminum activation detectors placed at 10 locations in the maze. From the radionuclide production rate in the activation detectors, the attenuation profile along the maze was obtained for the reaction of 27 Al(n,α) 24 Na. Monte Carlo simulations performed with two codes, the Particle and Heavy Ion Transport System (PHITS) and CERN FLUktuierende KAskade (FLUKA), gave good agreements with the measurements within a factor of 1.7 for the production rates ranging over more than 3 orders of magnitude.

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Section: Activation Detectors and Experimental Setupmentioning

confidence: 99%