THEME 03-2-1100-2010/2021

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

Issues addressed and main goals of research:
Search for and investigation of double-neutrino and neutrinoless modes of double beta-decay, clarification of the neutrino nature, Majorana or Dirac, and absolute neutrino mass scale and hierarchies. Search for the neutrino magnetic moment and dark matter. Investigation of galactic and extragalactic neutrino sources, 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. 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:

Data taking in the 2 β 0 ν -decay measurements of ¹⁰⁶Cd, ⁸²Se, ⁷⁶Ge with the SuperNEMO and GERDA spectrometers.
Processing of experimental data and determination of T_1/2(2 β 2 ν ) for ⁴⁸Ca, ⁹⁶Zr, ¹³⁰Te, ¹¹⁶Cd, ⁸²Se and ⁷⁶Ge.
Data taking with the HPGe-based low-background spectrometer at the Kalinin Nuclear Power Plant. Search for a signal of coherent neutrino scattering on the Germanium nuclei. Search for the neutrino magnetic moment at the sensitivity level of ~ 10 ^-12 µ_B.
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.
Research and development of the semiconductor-based detecting systems for the GERDA and MAJORANA experiments. Continuation of the data taking in both experiments. Preparation of the tone-scale germanium project LEGEND.
Data taking with seven clusters of the BAIKAL-GVD neutrino tlescope. Search for and study of high-energy neutrinos of the astrophysical nature. Building and commissioning of new detector clusters. Development and testing of new data acquisition and data transmission systems aiming in a lower energy threshold (Baikal project).
Investigation of KLL and KMM Auger electrons in ⁶⁷Ga and ^152,154,155Eu decays.
Development and testing of new low-threshold (~ 200 eV) HPGe detectors for searching for the coherent neutrino scattering, as well as plastic scintillator detectors for their active shielding.
Continuation of data taking by the DANSS spectrometer. Data analysis and publication of results (on sterile neutrinos, reactor monitoring, sensivity to nuclear fuel components) based on statistics over four years of operation (4 million registered antineutrinos). R&D for the upgrade of the DANSS spectrometer.

List of projects:
	Project	Leader	Priority (period of realisation)
1.	SuperNEMO	O.I. Kochetov	1 (2013-2021)
2.	GEMMA-II	A.V. Lybashevsky E.A. Yakushev	1 (2010-2021)
3.	EDELWEISS-LT	E.A. Yakushev	1 (2010-2021)
4.	G&M (GERDA)	K.N. Gusev	1 (2010-2021)
5.	DANSS	Yu.A. Shitov	1 (2011-2021)
6.	BAIKAL	I.A. Belolaptikov	1 (2009-2023)

Muon Ordinary capture for the
Nuclear Matrix elemENTs in ββ decays (MONUMENT)

D.R. Zinatulina

1 (2021-2023)

List of Activities:

Activity or Experiment

Leaders

Status

Laboratory or other
Division of JINR
Responsible person

Main researchers

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

BLTP

F. Simkovic

Investigation of 2K2 β and 2K0
decays of ¹⁰⁶Cd with the TGV
spectrometer

N.I. Rukhadze
I. Shtekl

Data taking

DLNP

S.L. Katulina, A.V. Salamatin, V.G. Sandukovskiy, V.V. Timkin

BLTP

F. Simkovic

G&M (GERDA-MAJORANA
Project)

K.N. Gusev

Preparation
Data taking

DLNP

M.V. Fomina, A.A. Klimenko, O.I. Kochetov, A.V. Lubashevsky, I.B. Nemchenok, N.S. Rumyantseva, V.G. Sandukovsky, E.A. Shevchik, M.V. Shirchenko, A.A. Smolnikov, I.V. Zhitnikov, D.R. Zinatulina

BLTP

F. Simkovic

GEMMA-III Project

A.V. Lybashevsky
E.A. Yakushev

Modernization
Data taking

DLNP

V.V. Belov, M.V. Fomina, S.V. Kazartsev, J.H. Khushvaktov, A.S. Kuznetsov, D.V. Medvedev, D.V. Ponomarev, V.G. Sandukovsky, K.V. Shakhov, T.A. Shevchik, M.V. Shirchenko, S.V. Rozov, I.E. Rozova, I.V. Zhitnikov, D.R. Zinatulina

EDELWEISS-LT Project

E.A. Yakushev
S.V. Rozov

Modernization
Data taking

DLNP

E.A. Evsenkin, D.V. Filosofov, A.V. Lubashevsky, N.A. Mirzaev, L.L. Perevoshchikov, D.V. Ponomarev, F.V. Rakhimov, I.E. Rozova, K.V. Shakhov

BAIKAL Project

I.A. Belolaptikov

Preparation
Data taking

DLNP

P.I. Antonov, I.V. Borodina, 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, M.B. Milenin, M.L. Minaev, V. Nazari, D.V. Naumov, T. Orazgali, D.A. Orlov, L.L. Perevoshchikov, 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. Sorokovnikov, N.I. Sosunov, I.A. Stepkin, E.V. Khramov, B.A. Shaybonov, K.I. Shevchenko, M.V. Shirchenko, Yu.V. Yablokova

Investigation of spectra of
low-energy electrons after
radioactive decays to obtain data
for atomic and nuclear physics and
for nuclear medicine. Development
of ultrastable energy calibration for
the KATRIN neutrino project.
Investigation of decays of rear-earth
radionuclides and structure of their
excited states

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, L.L. Perevoshikov, A.E. Sirenko, V.I. Stegailov, A.A. Solnyshkin, D.V. Filosofov, Yu.V. Yablokova

FLNR

I.N. Izosimov

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

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

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

D. Borowicz, 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

Yu.A. Shitov

Data taking
Modernization

DLNP

V.V. Belov, M.V. Fomina, S.V.Kazartsev, A.S. Kuznetsov, D.V. Medvedev, A.G. Olshevsky, I.E. Rozova, N.S. Rumyantseva, M.V. Shirchenko, E.A. Shevchik, D.R. Zinatulina, I.V. Zhitnikov

12.

MONUMENT Project

D.R. Zinatulina
M.V. Shirchenko

Preparation
Data taking

DLNP

V.V. Belov, M.V. Fomina, K.N. Gusev, S.V. Kazartsev, N.S. Rumyantseva, E.A. Shevchik, Yu.A. Shitov, 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
Kazakhstan	Almaty	INP
Mongolia	Ulaanbaatar	IPT MAS
Poland	Krakow	INP PAS
	Lublin	UMCS
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
United Kingdom	London	UCL
	Manchester	UoM
Uzbekistan	Tashkent	INP AS RUz
		NUU
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