Frank Laboratory of Neutron Physics is one of the laboratories of the Joint Institute for Nuclear Research (Dubna, Russia) that investigates the neutron as an elementary particle using various instruments, and employs the neutron as an instrument to investigate the structure and dynamics of condensed matter, including crystals and nanosystems, functional materials, complex liquids and polymers, rocks, etc. so that our findings could find application in molecular biology and pharmacology, engineering diagnostics and in other fields of science and technology.
IBR-2 Status OFF
The operation of the IBR-2 reactor and access to its experimental instruments have been suspended until September 2023
Events
Joint meeting of the working group on the development of the concept of the instrumental base of a new neutron source and STC of DNICM and DSC, 28 June (Tuesday), 2022, 15:00, FLNP Conference hall
"Proposals for the development of reflectometers at the Neptune reactor"
Speaker V. D. Zhaketov
FLNP SEMINAR, June 30, 2022 (Thursday) at 11:00, FLNP Conference Hall (3rd floor)
"On the possibility of creating a UCN source at a periodic pulsed reactor II"
A.I. Frank
It has recently been shown that the principle of time focusing and F.L. Shapiro's idea of pulsed filling of a UCN trap make it possible to create a sufficiently intense UCN source at a pulsed reactor of medium power. For a time-dependent effect on the neutron velocity, providing focusing in time, it was proposed to use the phenomenon of nonstationary neutron diffraction on a moving diffraction structure. Subsequent analysis has shown that the creation of a time lens based on this principle is associated with hardly surmountable difficulties. This forces us to turn to an alternative focusing approach based on the principle of nonstationary spin flip in a magnetic field.
The report will consider both approaches to time focusing and analyze the advantages and disadvantages of each of them. The results of conceptual calculations of a UCN source with magnetic focusing in the conditions of the IBR-2 and Neptun reactors will be presented, as well as the main problems encountered in the creation of such a source will be formulated.
FLNP SEMINAR, June 27, 2022 (Monday) at 15:00, FLNP Conference Hall (3rd floor)
"Kurchatov Complex for Synchrotron and Neutron Investigations:Main Areas of Work"
S.N.Yakunin(first deputy head, KCSNI NRC KI)
"Applications of modern X-ray methods in studies of liquid interfaces"
N.N.Novikova (chief researcher, NRC KI)
FLNP SEMINAR, June 21, 2022 (Thuesday) at 11:00, FLNP Conference Hall (3rd floor)
“On areas of neutron investigations at the URAL research reactor”
Gubkin A.F. M.N. Mikheev Institute of Metal Physics of the Ural Branch of the Russian Academy of Sciences
DNP Seminar, June 22 (Wednesday), 2022, 11:00, FLNP Conference Hall (3rd floor)
"Methods for measuring the characteristics of delayed neutrons and verifying nuclear data"
Gremyachkin D.E. (Researcher, Institute of Physics and Power Engineering, Obninsk)
In the nuclear reactor physics, one of the most essential issues is the control of a fission chain reaction. As a result of fission, 2-3 neutrons are instantly emitted. A small fraction of neutrons, less than 1%, occurs with some delay after the fission event. Thus, delayed neutrons allow to address the issue of an uncontrolled fission chain reaction on prompt neutrons, since they slow down the response of the reactor to a change in reactivity.
Due to the accumulation of long-lived highly toxic minor actinides, it is necessary to study and develop approaches to their disposal. One of such approaches is adding of long-lived minor actinides produced during the operation of nuclear power facilities to nuclear fuel in order to use them for generating energy as a result of fission. The neutron spectrum in such facilities is harder. Therefore, for the safe control of such facilities, it is necessary to know with high accuracy the characteristics of delayed neutrons emitted during the fission of nuclei that constitute nuclear fuel.
The development of a complex method for measuring the characteristics of delayed neutrons emitted during the fission of actinides using fast neutrons based on the effects that distort the results, as well as the development of methods for verifying the estimated nuclear physics data using the obtained results and recommended data, will be considered.
As a result, a technique for measuring the characteristics of delayed neutrons based on the spectral characteristics of the primary source of neutrons has been improved, a method for processing experimental data based on the spectral characteristics of the primary source of neutrons has been developed and applied, a new approach to measuring the temporal characteristics of delayed neutrons in the fission of heavy nuclei using neutrons generated in the reaction T (d,n) on a solid target has been proposed and approaches to verifying the estimated nuclear data using experimental and recommended macroscopic data on delayed neutrons have been developed, new experimental data on the time parameters of delayed neutrons in the fission of actinide nuclei in a wide range of primary neutron energies have been obtained.
News
Congratulations to Aleksandr Vladislavovich Belushkin with the election of a Corresponding Member of RAS!
On 1 June, 2022, at the General Meeting of the Russian Academy of Sciences, Head of the Division of Condensed Matter Research and Developments Aleksandr Vladislavovich Belushkin was elected as a Corresponding Member of RAS!
The Frank Laboratory of Neutron Physics congratulates Aleksandr Vladislavovich and wishes him great new achievements, discoveries and accomplishments!
The 6th International Workshop on Deep Learning in Computational Physics July 6-8, 2022 JINR, Dubna
We are pleased to invite you to participate to the DLCP-2022 – The 6th International Workshop on Deep Learning in Computational Physics which will be held in the Meshcheryakov Laboratory of Information Technologies (MLIT) of the Joint Institute for Nuclear Research (JINR) on July 6-8, 2022. The workshop will be held in a mixed format: face-to-face and remote. However, the poster section will be held in face-to-face only.
The workshop primarily focuses on the use of machine learning in particle astrophysics and high energy physics, but is not limited to this area. Topics of interest are various applications of artificial neural networks to physical problems, as well as the development of new modern machine learning methods for analyzing various scientific data, including big data.
The working language is English.
All relevant information on the workshop website: https://dlcp2022.jinr.ru/.
Organizers
Joint Institute for Nuclear Research, Meshcheryakov Laboratory of Information Technologies (MLIT JINR, Dubna, Russia) and M.V. Lomonosov Moscow State University, D.V. Skobeltsyn Institute of Nuclear Physics (SINP MSU, Moscow, Russia).
The main topics
The list is not limited these themes.
Track 1. Machine Learning in Particle Astrophysics and High Energy Physics
Track 2. Modern Machine Learning Methods
Track 3. Machine Learning in Natural Sciences
Track 4. Machine Learning in Education
Important dates
Abstract submission — June 22, 2022
Notification of acceptance — June 29, 2022
Registration — until July 4, 2022
The Workshop — July 6-8, 2022
Paper submission — August 9, 2022
Notification of paper acceptance — September 6, 2022
Registration and abstract submission
The registration and abstract submission should be done via the website. No fee for participation. Proceedings Selected articles will be recommended for publication in the scientific journal Numerical Methods and Programming (https://en.num-meth.ru) which indexed in RSCI. The journal is included in the Higher Attestation Commission (Russian Federation).
Contacts
All correspondence concerning the workshop should be addressed by e-mail.
Conference e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Competition selection in 2022 for personal scholarships named after Zh. I. Alferov for young scientists in the field of physics and nanotechnology
The Ministry of Science and Higher Education of Russia, together with the Council for Grants of the President of the Russian Federation, announces a competition selection in 2022 for personal scholarships named after Zh. I. Alferov for young scientists in the field of physics and nanotechnology. Registration of participants of the competition will be open from 12:00 AM 19 April to 2:00 PM 19 May, 2022. For registration and more details, please see: https://grants.extech.ru/
Candidates for the competition are nominated by the Science and Technology Council or the Scientific Council of JINR. FLNP candidates should first be heard and recommended by STC FLNP. The next meeting of STC FLNP will be held on 29 April (Friday) 2022, at 3:00 PM in the Conference Hall of FLNP JINR (bldg. 119, 3rd floor).
Condensed Matter Research at the IBR-2 to be discussed at FLNP conference
From 25 to 29 April 2022, the Frank Laboratory of Neutron Physics of the Joint Institute for Nuclear Research in Dubna will hold the International Conference “Condensed Matter Research at the IBR-2”.
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On January 26, 2022, the JINR Scientists' House hosted the solemn presentation of diplomas of doctors and candidates of sciences
On January 26, 2022, the JINR Scientists' House hosted the solemn presentation of diplomas of doctors and candidates of sciences to applicants who successfully defended their dissertations in the Dissertation Councils at the FLNP and DLNP. The Chairman of the JINR Qualification Commission Victor A. Matveev participated in the awarding ceremony. Among the eight awarded diplomas, four are DNICM FLNP researchers. Two new Doctors of Sciences appeared in the Laboratory: Doctor of Physical and Mathematical Sciences Tropin T.V. and doctor of technical science Kichanov S.E. Among the new certified candidates - Belozerova N.M. and Zhaketov V.D. The scope of scientific interests of employees is diverse: from nanocomposites, fullerenes, magnetic multilayer structures, and complex functional materials to the creation of techniques and methods for neutron radiography and tomography at the IBR-2 pulsed reactor. We congratulate the newly "baked" doctors and candidates of sciences and wish them further creative achievements in their chosen scientific areas.
In the photo: Doctor of Technical Sciences Sergey E. Kichanov, Candidate of Physical and Mathematical Sciences Nadezhda M. Belozerova, Scientific Secretary of the Dissertation Council at the FLNP Tatyana I. Ivankina, Doctor of Physical and Mathematical Sciences Timur V. Tropin, Chairman of the JINR Qualification Commission Academician Victor A. Matveev, Candidate of Physical and Mathematical Sciences Vladimir D. Zhaketov.