03-2-1100-2010/2024
 
Priority: 1
   
Status: In-progress


Non-Accelerator Neutrino Physics and Astrophysics

Leaders:     E.A. Yakushev
A. Kovalik

Participating countries and international organizations:
Azerbaijan, Bulgaria, Czech Republic, Finland, France, Germany, Italy, Kazakhstan, Malaysia, Mongolia, Poland, Russia, Slovakia, Switzerland, United Kingdom, USA, Uzbekistan.

Issues addressed and main goals of research:
Search for the neutrinoless mode and investigation of the double-neutrino mode of the double beta decay, clarification of the neutrino nature, Majorana or Dirac, and the absolute neutrino mass scale and hierarchies. Search for the neutrino magnetic moment, coherent elastic neutrino-nucleus scattering and dark matter. Investigation of galactic and extragalactic neutrino sources, the diffusive neutrino cosmic background, and search for exotic particles (monopoles). Use of the neutrino detector for a distant investigation of processes inside of the reactor core of the Kalinin Nuclear Power Plant (KNPP). Search for sterile neutrinos. Spectroscopy of nuclei far from stability. Development of new methods for charged and neutral particle detection.

Expected results in the current year:
  1. Data taking in the 2b0n decay measurements of 82Se with the SuperNEMO spectrometer. Processing of the data collected in the GERDA experiment, set T1/2 limits for different 2b-decay modes.

  2. Processing of experimental data and determination of T1/2(2b2n) for 48Ca, 96Zr, 130Te, 116Cd, 82Se. Set a refined value of T1/2(2β2ν) for 76Ge based on the GERDA Phase II data.

  3. Data taking with the HPGe-based low-background nGeN spectrometer at the Kalinin Nuclear Power Plant. Search for a signal of coherent neutrino scattering on germanium nuclei. Data taking start searching for the neutrino magnetic moment at the sensitivity level of ~ (5-9)·10 -12 µB after several years of data taking.

  4. Continuation of data taking in the EDELWEISS experiment with new detectors operating with an energy threshold of 0.1 keV suitable for the extra-low mass WIMP region. Analysis of previously accumulated data, determination of parameters for light dark matter for the mass region below 1 GeV/c 2. Start of the Ricochet phase of the experiment for precision CEnNS studuing at ILL with the detectors developed by EDELWEISS.

  5. Start of data taking in the tone-scale LEGEND experiment searching for the  2b2n decay of 76Ge. Assessment of the background level with the first batch of enriched detectors (~60 kg). Adding all available detectors and launching a full-scale experiment.

  6. Data taking with ten clusters of the BAIKAL-GVD neutrino telescope. Search for and study of high-energy neutrinos of astrophysical nature. Construct on and commissioning of new detector clusters. Development and testing of new data acquisition and data transmission systems aiming at a lower energy threshold (Baikal project).

  7. Continuation of the study of low-energy electrons from radioactive decay. Measurement of Auger spectra for 103Pd and 125I and low-energy conversion electrons from the decay of 227Ac. Commissioning of the new vacuum evaporation setup in a radiochemical laboratory. 57Co calibration measurements of the ESA-50 spectrometer. Processing of measurement results for 2022 and 2023.

  8. Development and testing of new low-threshold (~ 200 eV) HPGe detectors for searching for the coherent neutrino scattering, as well as of plastic scintillator detectors for their active shielding.

  9. Results of search for sterile neutrinos on the 2016-2021 data accumulated by the DANSS spectrometer. Precision estimates of the gamma and neutron background at the location of the DANSS spectrometer (room A336 under the reactor of the 4th power unit of the KNPP). R&D results of the spectrometr modernization.

  10. The radiochemical laboratory of the 2nd class will be commissioned at DLNP; equipment for manufacture of radioactive sources for brachytherapy of cancer diseases will be installed; obtained sanitary and epidemiological certificates for the radiochemical laboratory will be concluded.

  11. Continuation of the MONUMENT project. Analysis of data from 2021 and 2022 the experimental campaigns, namely for the measured 136Ba, 76Se, 100Mo enriched isotopes. Preparation for measurements in 2023 (purchase of isotopically enriched elements, modernization of the muon trigger system). Data taking and analysis of accumulated data.
List of projects:
  Project Leader Priority
(period of realisation)

1.

SuperNEMO

O.I. Kochetov

1   (2013-2023)

2.

nGEN (GEMMA)

A.V. Lubashevskiy E.A.Yakushev

1   (2010-2023)

3.

EDELWEISS/RICOCHET

E.A. Yakushev

1   (2010-2023)

4.

GERDA (LEGEND)

K.N. Gusev

1   (2010-2023)

5.

DANSS

M.V. Shirchenko

1   (2011-2023)

6.

BAIKAL

I.A. Belolaptikov

1   (2009-2023)
7. MONUMENT D.R. Zinatulina 1   (2021-2023)

List of Activities
  Activity or Experiment Leaders
Status
      Laboratory or another
    Division of JINR
Responsible person		 Main researchers
1. SuperNEMO Project O.I. Kochetov
R&D
Data taking
 

DLNP

D.V. Filosofov, I.I. Kamnev, D.V. Karaivanov, F.F. Klimenko, M.A. Mirzaev, I.B. Nemchenok, A.V. Rahimov, A.V. Salamatin, A.A. Smolnikov, Yu.A. Shitov V.V. Timkin, V.I. Tretyak, O.V. Vagina
     
2. Investigation of 2K2n and 2K0n
decays of 106Cd with the TGV
spectrometer		 N.I. Rukhadze
I. Shtekl
Data taking
 

DLNP

K.N. Gusev, S.L. Katulina, A.A. Klimenko, S.V. Rozov, A.V. Salamatin, V.G. Sandukovskiy, V.V. Timkin, V.P. Volnikh, E.A. Yakushev
     
3. GERDA (LEGEND) Project K.N. Gusev
Preparation
Data taking
 

DLNP

Yu.V. Gurov, S.A. Evseev, D.I. Filosofov, M.V. Fomina, A.A. Klimenko, O.I. Kochetov, A.V. Lubashevsky, I.I. Kamenev, Z.Kh. Khushvaktov,
I.B. Nemchenok, A.V.Rakhimov, S.V. Rozov, N.S. Rumyantseva, V.G. Sandukovsky, K.V. Shaktov, Yu.A. Shitov, E.A. Shevchik, M.V. Shirchenko, A.A. Smolnikov, S.I. Vasilev, V.P. Volnikh, I.V. Zhitnikov, D.R. Zinatulina, E.A. Yakushev
     
4. nGEN (GEMMA) Project A.V. Lubashevskiy
E.A. Yakushev
Modernization
Data taking
 

DLNP

V.V. Belov, S.A.Evseev, D.V. Filosofov, M.V. Fomina, L.Grubchin, U.B. Gurov, A.Kh. Inoyatov, S.L. Katulina, S.V. Kazartsev, S.P. Kiyanov, D.V. Medvedev, D.V. Ponomarev, D.S. Pushkov, A.V. Salamatin, V.G. Sandukovsky, K.V. Shakhov, T.A. Shevchik, M.V. Shirchenko, Z.Kh. Khukhvatov, S.V. Rozov, I.E. Rozova, V.P. Volnykh, I.V. Zhitnikov
5. EDELWEISS/RICOCHET Project E.A. Yakushev
S.V. Rozov
Modernization
Data taking
 

DLNP

V. Belov, Yu. Gurov, A. Inoyatov, D. Karaivanov, S. Kazartsev, J. Khushvaktov, S. Evseev, A.V. Lubashevskiy, D.Filosofov, N.A. Mirzaev, D.V. Ponomarev, F.V. Rakhimov, I.E. Rozova, A.Salamatin, K.V. Shakhov, N.Temerbulatov, V. Trofimov, Yu. Vaganov
6. BAIKAL Project I.A. Belolaptikov
Preparation
Data taking
 

DLNP

V.F. Allakhverdyan, P.I. Antonov, I.V. Borodina, V. Dik, I.S. Dotsenko, M.S. Dovbnenko, R. Dvornicky, A.A. Doroshenko, T.V. Elzhov, A.N. Emelianov, S.A. Evseev, K.V. Golubkov, N.A. Gorshkov, M.S. Katulin, S.A. Katulin, S.L. Katyulina, M.M. Kolbin, K.V. Konishev, A.V. Korobchenko, M.V. Kruglov, Y.M. Malyshkin,  M.B. Milenin, M.L. Minaev,
D.V. Naumov, D.A. Orlov, D.P. Petukhov, E.N. Pliskovski, I.E. Rozova, V.D. Rushay, A.V. Salamatin, G.B. Safronov, S.I. Sinegovsky, A.E. Sirenko, M.N. Sorokovikov, N.I. Sosunov, I.A. Stepkin, A.P. Stromakov, E.V. Khramov, B.A. Shaybonov, K.I. Shevchenko, Yu.V. Yablokova, D.V. Zvezdov, D. Seitova, A.G. Solovjev
7. Experimental strudy of low-energy electron spectra arising in radioactive decay with the aim to obtain new data on low-excited states of nuclei and radiation-free relaxation of atomic systems A.Kh. Inoyatov
A. Kovalik
Data taking
 

DLNP

M.A. Abd Al'ngar, M.S. Dovbnenko, S.V. Fateev, N.V. Morozova, V.A. Morozov, A.E. Sirenko, V.I. Stegailov, A.A. Solnyshkin, D.V. Filosofov, Yu.V. Yablokova
 

FLNR

I.N. Izosimov
8. Radiochemical support of
irradiation of targets, separation
of radionuclides from them by
radiochemistry and mass separation
methods, preparation of ionizing
radiation sources for physical
research at DLNP; chemical,
radiochemical and mass separator
support of low-background
measurements for neutrino physics		 D.V. Filosofov
A.Kh. Inoyatov
Preparation
 

DLNP

Yu.A. Vaganov, A.I. Velichkov, D.V. Karaivanov, N.V. Morozova, J.K. Samatov, A.A. Solnyshkin, J.A. Dadakhanov, E.S. Kurakina, A.E. Baimukhanova, A.V. Rakhimov, N.A. Mirzayev, M.Y. Vorobyeva, E.A. Denisova
 

FLNR

G.A. Bozhikov

  
9. Development of methods for the
separation of elements
(radiochemistry and mass
separation); development of
methods for obtaining radioisotopes
for nuclear medicine and the
synthesis of radiopharmaceuticals
based on them; development and
manufacture of micro sources for
cancer brachytherapy; study of the
physicochemical properties of
condensed matter using the method
of perturbed angular correlations of
nuclear radiation

D.V. Filosofov
Preparation
 

DLNP

A. Baymukhanova, Yu.A. Vaganov, A.I. Velichkov, D.V. Karaivanov, A.A. Solnyshkin, A.V. Salamatin, D.A. Salamatin, N.T. Temerbulatova, E.S. Kurakina
 

FLNR

G.A. Bozhikov
10. Development and production of
low-energy-threshold HPGe
detectors. Development and
production of special types of
Si and Ge detectors for low
background measurements.
Development and production
of plastic scintillators for
low-background spectrometers,
neutron detectors, and cosmic
muon detection. Development and
production of a muon detection
network for continuous atmosphere
control in the Moscow region		 E.A. Yakushev
Preparation
 

DLNP

Yu.B. Gurov, L. Grubchin, K.N. Gusev, S.L. Katulina, I.B. Nemchenok, D.V. Ponomarev, S.V. Rozov, V.G. Sandukovskiy
 

FLNR

A.M. Rodin
 

VBLHEP

N.I. Zamyatin
11. DANSS Project M.V. Shirchenko
Data taking
Modernization
 

DLNP

V.V. Belov, M.V. Fomina, S.V.Kazartsev, S.P. Kiyanov, D.V. Medvedev, D.S. Pushkov, I.E. Rozova, A.V. Salamatin, D.V. Filosofov, E.A. Shevchik, I.V. Zhitnikov, V.P. Volnykh
12. MONUMENT Project D.R. Zinatulina
M.V. Shirchenko
Data taking
Modernization
  DLNP

V.V. Belov, M.V. Fomina, K.N. Gusev, S.V. Kazartsev, N.S. Rumyantseva, E.A. Shevchik, E. Sushenok, I.V.Zhitnikov 

Collaboration
Country or International Organization City Institute or Laboratory
Azerbaijan Baku IRP ANAS
Bulgaria Plovdiv PU
  Sofia INRNE BAS
Czech Republic Prague CTU
  Rez NPI CAS
Finland Jyvaskyla UJ
France Grenoble UGA
  Lyon IPNL
  Modane LSM
  Orsay CSNSM
  Saclay CEA
Germany Heidelberg MPIK
  Karlsruhe KIT
  Mainz JGU
  Munich TUM
Italy Assergi INFN LNGS
Kazakhstan Almaty INP
Malaysia Johor Bahru UTM
Mongolia Ulaanbaatar IPT MAS
Poland Krakow INP PAS
Russia Dubna Dubna State Univ.
  Gatchina NRC KI PNPI
  Moscow ITEP
    NNRU "MEPhI"
    SC "VNIINM"
    SINP MSU
  Moscow, Troitsk HPPI RAS
    INR RAS
  Neutrino BNO INR RAS
  St. Petersburg FIP
    KRI
  Tomsk NPI TPU
  Voronezh VSU
Slovakia Bratislava CU
    IEE SAS
Switzerland Villigen PSI
  Zurich UZH
United Kingdom London UCL
  Manchester UoM
USA Chapel Hill, NC UNC
  Tuscaloosa, AL UA
Uzbekistan Tashkent INP AS RUz
    NUU