Informace o publikaci

Measurements of the neutron spectra from the p+Be neutron generator of the NPI CAS

Autoři

MAJERLE Mitja ANSORGE Martin BÉM Pavel KOLIADKO Daniil MRÁZEK Jaromír NOVÁK Jan ŠIMEČKOVÁ Eva ŠTEFÁNIK Milan KOŠŤÁL Michal MATĚJ Zdeněk CHOHAN Haridev WONG Ocean

Rok publikování 2023
Druh Článek v odborném periodiku
Časopis / Zdroj NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
Fakulta / Pracoviště MU

Fakulta informatiky

Citace
www https://www.sciencedirect.com/science/article/pii/S0168900223003042
Doi http://dx.doi.org/10.1016/j.nima.2023.168314
Klíčová slova Fast neutron generator; Neutron spectrum measurement; Organic scintillator; Time-of-flight; Unfolding
Popis The Nuclear Physics Institute of the Czech Academy of Sciences (NPI CAS) operates several neutron sources, including a generator of a continuous spectrum of neutrons up to 33 MeV. Accelerated protons from the U-120M cyclotron are directed to an 8 mm thick beryllium target to produce the neutrons. In this work, the neutron spectrum at distances of 3–8 m was directly measured with NE213 and stilbene scintillator detectors in the forward, diagonal and perpendicular directions. At a distance of 50 cm from the Be target, the neutron spectrum was validated with a gold activation detector. From previous work, the neutron spectra at close distances were characterized for use in high-intensity irradiation. Both the newly measured spectra at large distances and the previously measured spectrum were simulated using the Monte Carlo code, MCNP6.2, with ENDF7PROT and JENDL-4.0/HE nuclear data libraries. The comparison of the simulated and experimentally measured spectra revealed several limitations of both libraries.

Používáte starou verzi internetového prohlížeče. Doporučujeme aktualizovat Váš prohlížeč na nejnovější verzi.

Další info