11-16 July 2022
Europe/Moscow timezone
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Studying neutron spectrum of photoneutron source of INR RAS

13 Jul 2022, 15:00
20m
НИИЯФ, ЮК, Ц-05

НИИЯФ, ЮК, Ц-05

Speaker

Alexey Afonin (INR RAS)

Description

A W-Be-photoneutron neutron source IN-LUE based on a linear electron accelerator was created and installed at the Institute for Nuclear Research of RAS [1]. The shape of the neutron spectrum and flux estimation was obtained earlier as a result of simulation [2]. Due to the impossibility of measuring the neutron spectrum in a wide range of energies within the source, various methods of spectrum unfolding based on the solution of the inverse problem are usually used.
In this work, the results of unfolding the neutron spectrum into photoneutron source chamber of the source are presented. As experimental data for unfolding, we used the data of neutron activation analysis of samples irradiated in the source (Ag, Mg, Mn,Sb, Ti, etc.). To unfold the spectrum, a number of well-known Nuclear Energy Agency (NEA) programs were used [3], which implement various algorithms for solving the inverse problem.
This work also presents the results of measurements of the neutron flux by various methods, as well as their comparison.

  1. A.V.Andreev et al. // Bull. Russ. Acad. Sci.: Phys., 2017, V. 81, P. 748.
  2. N.Sobolevsky // Fifth Int. Conf. on Nucl. Fragm. (NUFRA2015). Kemer. Oct. 2015.
  3. OECD Nuclear Energy Agency (NEA) Data Bank. Computer program services.
Section 7. Synchrotron and neutron radiation sources and their use in scientific and applied fields
The speaker is a student or young scientist No

Primary author

Alexey Afonin (INR RAS)

Co-authors

Aleksandr Kasparov (INR RAS) Dr Mikhail Mordovskoy (INR RAS) Stanislav Potashev (Institute for Nuclear Research of Russian Academy of Sciences)

Presentation Materials