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Nuclear Physics
03-0-1129-2017/2021
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03-4-1128-2017/2022
    03-4-1128 - RUS
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03-4-1128-2017/2022

 

Priority:

1

 

 

Status:

In-progress


Investigations of Neutron Nuclear Interactions
and Properties of the Neutron

Leader:

E.V. Lychagin

Deputies:  

Yu.N. Kopatch
P.V. Sedyshev


Participating countries and international organizations:

Albania, Australia, Austria, Azerbaijan, Belarus, Belgium, Bulgaria, CERN, China, Croatia, Czech Republic, Egypt, Finland, France, Georgia, Germany, Hungary, IAEA. India, Italy, Japan, Kazakhstan, Moldova, Mongolia, North Macedonia, Norway, Poland, Republic of Korea, Romania, Russia, Serbia, Slovakia, Slovenia, South Africa, Switzerland, Thailand, Turkey, Ukraine, USA, Uzbekistan, Vietnam.


Issues addressed and main goals of research:

Experimental and theoretical investigations of symmetry breaking effects in reactions with neutrons and fundamental properties of the neutron to test the parameters of the Standard Model and search for "new physics". Investigation of the properties of excited nuclei, reactions with emission of charged particles, fission physics. Obtaining of relevant data for astrophysics, nuclear power engineering and nuclear waste transmutation problem using neutron- and gamma-induced reactions. Application of neutron physics methods in other fields of science and technology. Development and construction of detectors of neutrons and other ionizing radiation, as well as applied methods in nuclear physics with neutrons. Development of the Intense REsonance Neutron Source (IREN) and the experimental base at the IREN and IBR-2 facilities.


Expected results in the current year:

Investigations of violations of fundamental symmetries
in neutron-nucleus interactions and related data

  • Measurement of TRI and ROT effects for gamma-rays and neutrons in the fission of uranium by polarized neutrons.

  • Measurement of yields and angular correlations of light charged particles in ternary and quaternary fission of 252Cf using Timepix detectors.

  • Determination of characteristics of excitation levels of nuclei in the (n, 2n) and (n, n'γ) reactions with neutrons with an energy of 14 MeV.

  • Measurements of angular and energy distributions of prompt fission neutrons (PFN) in 235U(n,f) and 239Pu(n,f) reactions in the resonance region using a position-sensitive twin ionization chamber and 32 scintillation counters.

  • Determination of model concepts of modern values of the level density and radiation widths of nuclei of various shapes and types in the capture of slow neutrons.

  • Carrying out an experiment to search for a singlet deuteron.

  • Measurement of fast neutron cross sections for 6Li(n,α)3H and 91Zr(n,α)88Sr reactions.

Investigation of fundamental properties of the neutron, UCN physics:

  • Design and development of the necessary experimental equipment for realization of an experiment to measure the efficiency of extracting very cold neutrons from a source by a specially designed reflector.

  • Construction of a physical and mathematical model of propagation of slow neutrons in nanostructured diamond reflectors based on data of single small-angle scattering of cold neutrons.

  • Measurements of quasi-mirror reflection of VCN from a sample with crystallites of ~ 20 nm in size.

  • Design and construction of a new experimental setup for studying the recently observed phenomenon of nonstationary heating of UCNs on surface acoustic waves.

  • Development of the concept of a UCN source based on the idea of accumulating a pulsed neutron flux formed by a time lens. 

Applied and methodological research:

  • Measurement of neutron fluxes and spectra by the counting and current method at beamline 1 of the IBR-2 reactor to simulate the possibility of measuring the neutron lifetime.

  • Development of a prototype setup for neutron polarization by transmission through a 3He target.

  • Carrying out vacuum and cryogenic tests of a cryostat with a superconducting magnet to create an all-wave neutron polarizer.

  • Development and testing of an elemental analysis technique using the tagged neutron method and high-resolution gamma-ray detectors.

  • Investigation with the use of the EG-5 accelerator of the optical and electronic properties of semiconductor materials under X-ray irradiation.

  • Development of a modernization project for the EG-5 accelerator and its infrastructure.

  • Neutron activation and resonance neutron analysis of archaeological, biological and environmental samples at the IREN facility and at beamlines 3 and 11b of the IBR-2 reactor.

  • Creation of a network database of neutron activation analysis to automate studies of the elemental composition of samples of various nature at INP (Alma-Ata, Kazakhstan) and organization of routine neutron activation analysis at the automated site created in 2017-2019 at INP.

  • Completion of modernization of REGATA facility at the IBR-2 reactor.

  • Determination of the elemental content of plant, biological, geological samples, as well as new materials, including nanomaterials, by means of the neutron activation analysis method at the IBR-2 reactor using the REGATA facility.

  • Determination of radiation hardness of clean materials.

  • The use of low-background gamma spectrometry and alpha spectrometry to analyze the content of radionuclides in environmental objects.

Development of the IREN facility:

  1. Providing the neutron beam time from IREN for physical experiments.



List of projects:


 

Project

Leader

Priority
(period of realisation)

1.

TANGRA

Yu.N. Kopatch

1   (2014-2022)



List of Activities:


 

Activity or Experiment

Leaders

Status

 

    Laboratory or other
    Division of JINR
    Responsible person

Main researchers

1.

Investigations of violations
of fundamental symmetries in
neutron-nucleus interactions
and related data

Yu.N. Kopatch

Upgrade
Data taking
Data analysis


 

FLNP

G.S. Ahmedov, D. Berikov, S.B. Borzakov, I.I. Chuprakov, G.V. Daniljan, S. Enkhbold, Fan Lyong Tuan, N.A. Fedorov, Yu.M. Gledenov, D.N. Grozdanov, N.A. Gundorin, A.P. Kobzev, M. Kulik, V.L. Kuznetsov, E.V.Kuznetsova, Zh.V. Mezentseva, S.V. Mironov, V.V. Novitsky, I.A. Oprea, K.D. Oprea, Yu.N. Pokotilovskij, A.B. Popov, P.V. Sedyshev, M.V. Sedysheva, O.V. Sidorova, N.V. Simbirtseva, V.R. Skoj, A.M. Suhovoj, S.A.Telezhnikov, T.Yu. Tretyakova, Vu Dyk Kong, Sh.S. Zeynalov, 24 engineers, 4 workers


2.

Investigation of fundamental
properties of the neutron, UCN
physics

E.V. Lychagin

Upgrade
Data taking
Data analysis


 

FLNP

G.G. Bunatyan, T.L. Enik, A.I. Frank, W.I. Furman, S.V. Gorunov, G.V. Kulin, L.V. Mitsyna, A.Yu. Muzychka, A. Nesipbai, A.Yu. Nezvanov, Yu.N. Pokotilovskij, N.Yu. Rebrova, A.V. Strelkov, E.I. Sharapov, M.A. Zakharov, K.N. Zhernenkov, 3 engineers, 1 worker


3.

Applied research

P.V. Sedyshev

Upgrade
Data taking
Data analysis


 

FLNP

M.V. Frontasyeva, A.P. Kobzev, Yu.N. Kopatch, W.I. Furman, V.N. Shvetsov, K.N. Vergel, D.S. Grozdov, I.I. Zinicovscaia, G.Y. Hristozova, N.S. Yushin, P.S. Nekhoroshkov, G.S. Ahmedov, N.V. Simbirtseva, S.B. Borzakov, N.A. Fedorov, D.N. Grozdanov, N.A. Gundorin, M. Kulik, Zh.V. Mezentseva, I.A. Oprea, K.D. Oprea, V.R. Skoj, A.Yu. Dmitriev, 22 engineers, 4 workers


4.

Development of the IREN facility

V.N. Shvetsov

Upgrade


 

FLNP

V.G. Pjataev, E.A. Golubkov, 17 engineers, 1 worker


 

VBLHEP A.P. Sumbaev

V.F. Minashkin, V.N. Zamrij, 3 engineers


 

DLNP

I.N. Meshkov


5.

Development of experimental
infrastructure of the IREN facility

V.N. Shvetsov

Upgrade


 

FLNP

A.A. Beliakov, E.V. Lychagin, V.G. Pyataev, P.V. Sedyshev, V.A. Trepalin, 15 engineers


6.

Modernization of EG-5 accelerator

A.S. Doroshkevich

Upgrade


 

FLNP

A.N. Likhachev, A.P. Kobzev, 4 engineers


7.

Project TANGRA

Yu.N. Kopatch

Upgrade
Data taking
Data analysis



FLNP

F.Aliev, N.A. Fedorov, N.A. Gundorin, D.N. Grozdanov, C. Hramco, I.A. Oprea, K.D. Oprea, P.V. Sedyshev, V.R. Skoj, V.N. Shvetsov, T.Yu. Tretyakova


 

VBLHEP

U.Yu. Aleksakhin, S.V. Khabarov, Yu.N. Rogov, R.A. Salmin, M.G. Sapozhnikov, V.M. Slepnev, N.I. Zamjatin, E.V. Zubarev


 

DLNP

A.V. Krasnoperov, A.B. Sadovskii, A.V. Salamatin


 

LRB

G.N. Timoshenko

 

Collaboration


Country or International Organization

City

Institute or laboratory

Albania

Tirana

UT

Armenia

Yerevan

SRCHCH

Australia

Melbourne

Univ.

Austria

Innsbruck

Univ.

Azerbaijan

Baku

BSU

 

 

IGG ANAS

 

 

IRP ANAS

Belarus

Minsk

INP BSU

 

 

SPMRC NASB

Bulgaria

Plovdiv

PU

 

 

UFT

 

Sofia

IE BAS

 

 

INRNE BAS

CERN

Geneva

CERN

China

Beijing

IHEP CAS

 

Xi'an

NINT

Croatia

Zagreb

Oikon IAE

 

 

RBI

Czech Republic

Ostrava

UO

 

 

VSB-TUO

 

Prague

CEI

 

 

CTU

 

Rez

CVR

Egypt

Alexandria

Univ.

 

Cairo

NRC

 

Giza

CU

 

Mansoura

MU

 

Shibin El Kom

MU

Finland

Jyvaskyla

UJ

 

Oulu

UO

France

Cadarache

CC CEA

 

Grenoble

ILL

 

 

LPSC

 

Saclay

LLB

 

Strasbourg

IPHC

Georgia

Tbilisi

AIP TSU

 

 

TSU

Germany

Darmstadt

GSI

 

Dresden

HZDR

 

Kleve

HSRW

 

Mainz

JGU

 

Munich

TUM

 

Tubingen

Univ.

Hungary

Budapest

RKK OU

IAEA

Vienna

IAEA

India

Varanasi

BHU

Italy

Rome

ENEA

Japan

Kyoto

KSU

 

Tsukuba

KEK

Kazakhstan

Almaty

INP


Kyzlorda

KazSRIRG

 

Nur-Sultan

ENU

Moldova

Chisinau

IC ASM

 

 

IMB ASM

Mongolia

Ulaanbaatar

CGL

 

 

NRC NUM

North Macedonia

Skopje

UKiM

Norway

Trondheim

NTNU

Poland

Gdansk

GUT

 

Krakow

INP PAS

 

Lodz

UL

 

Lublin

UMCS

 

Opole

UO

 

Otwock (Swierk)

NCBJ

 

Poznan

AMU

 

Wroclaw

UW

Republic of Korea

Daejeon

KAERI

 

Pohang

PAL

 

Seoul

Dawonsys

Romania

Baia Mare

TUCN-NUCBM

 

Bucharest

IFIN-HH

 

 

IGR

 

 

UB

 

 

UPB

 

Cluj-Napoca

INCDTIM

 

Constanta

UOC

 

Galati

UG

 

Iasi

NIRDTP

 

Magurele

ISS

 

 

NIMP

 

Oradea

UO

 

Pitesti

ICN

 

Ramnicu Valcea

I.C.S.I.

 

Sibiu

ULBS

 

Targoviste

UVT

Russia

Borok

IBIW RAS

 

Dubna

Diamant

 

 

Dubna State Univ.

 

Gatchina

NRC KI PNPI

 

Grozny

CSPU

 

Irkutsk

LI SB RAS

 

Ivanovo

ISUCT

 

Izhevsk

UdSU

 

Moscow

GIN RAS

 

 

GPI RAS

 

 

IKI RAS

 

 

IPCE RAS

 

 

ITEP

 

 

MSU

 

 

NRC KI



SIAS

 

 

SINP MSU

 

 

VNIIA

 

Moscow, Troitsk

INR RAS

 

Nizhny Novgorod

IPM RAS

 

Obninsk

IPPE

 

Sevastopol

IBSS

 

St. Petersburg

Botanic garden BIN RAS

 

 

FIP

 

 

Ioffe Institute

 

 

KRI

SPMU

 

 

SPSFTU

 

Tula

TSU

 

Vladikavkaz

NOSU

 

Voronezh

VSU

 

Yekaterinburg

UrFU

Serbia

Belgrade

IPB

 

 

Univ.

 

Novi Sad

UNS

Slovakia

Bratislava

CU

 

 

IEE SAS

 

 

ILE SAS

 

 

IP SAS

Slovenia

Ljubljana

GeoSS

South Africa

Bellville

UWC

 

Pretoria

UNISA

 

Stellenbosch

SU

Switzerland

Villigen

PSI

Thailand

Hat Yai

PSU

Turkey

Canakkale

COMU

Ukraine

Berdyansk

BSPU

 

Donetsk

DonIPE

 

Kharkov

ISMA NASU

 

 

NSC KIPT

 

Kiev

KINR NASU

 

 

NUK

 

Uzhhorod

IEP NASU

USA

Durham, NC

Duke

 

Los Alamos, NM

LANL

 

Oak Ridge, TN

ORNL

Uzbekistan

Tashkent

INP AS RUz

Vietnam

Hanoi

IOP VAST

 

 

VNU