THEME02-2-1109-2012/2014

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02-2-1109-2012/2014

Priority:

Status:

Approved for completion
in 2014

Astrophysical Studies in Space Experiments

Leader:

L.G. Tkatchev

Participating Countries, Institutes and International organizations:
Belarus, Czech Republic, Japan, Mexico, Republic of Korea, Russia.

Scientific Programme:

The TUS space experiment has been proposed to measure the energy spectrum, composition and angular distribution of the Ultra High Energy Cosmic Rays (UHECR) at E 10 ¹⁹-10 ²⁰ eV, to study the region beyond the GZK cutoff. Existence of these particles is beyond the Standard Model of particle physics and is of great interest. The study from the orbit is much more effective in comparison with the ground-based detectors. The existing world statistics is assumed to be increased by a factor of 2-3 during 3 years of the global data taking. The TUS detector will make it possible to study UHECP neutrino Extensive Air Showers (EAS) from the space orbit.
The aim of the NUCLEON Project is direct CR measurements in the energy range 10 ¹¹-10 ¹⁵ eV and the atomic charge range Z = 1-30 in the near-Earth space to solve mainly the "knee" problem in the CR spectrum. The CR phenomena in this energy region are investigated in terrestrial experiments by measurement of EAS parameters or in balloon or space experiments. Below ~ 10 ¹⁴ eV the spectrum and composition are known from direct observation with detectors placed in balloons and earth satellites. However, at higher energies the CR flux is smaller and more difficult for direct and needs observation. Precise measurement of the CR composition and anisotropy will help to test the existing theoretical concepts and will become a basis for further studies.

Expected main results in 2014:

Completion of the complex tests of the in flight TUS apparatus on the Michail Lomonosov satellite.
Participation in the data taking of the TUS experiment.
Participation in production of the TUS on-line programs and off-line analysis.
Design and production of the fluorescent datactor for ТУНКА array.
Design of the calibration system for TUS detector on the Earth orbit.
Completion of the complex tests of the NUCLEON trigger system.
Development of the MC simulation program for the HERO space detector. Development of on-line data handling programs. Participation in the avant-project preparation.
Participation in the data taking of the NUCLEON experiment.

List of projects:
	Project	Leader	Priority (period of realization)
1.	TUS	L.G. Tkatchev	1 (2012-2014)

List of Activities

Activity or Experiment

Leaders

Status

Laboratory or other
Division of JINR
Responsible person

Main researchers

Experiment TUS

L.G. Tkatchev

Realization

DLNP

V.M. Grebenyuk, S.V. Bektemerova, S.Yu. Porokhovoy, D.V. Naumov, A.V. Tkachenko, F.F. Grinyuk, M. Slunechka, V. Slunechkova, O. Bakina, N. Zaikova, A.A. Siniza, N.I. Kalinin , V.F. Boreyko, A.A. Timoshenko, V.M. Romanov

VBLHEP

A.V. Skrypnik

LIT

S.K. Slepnev

Experiment NUCLEON

L.G. Tkatchev

Realization

DLNP

V.M. Grebenyuk, S.Yu. Porokhovoy, N.I. Kalinin, V.F. Boreyko, Nguen Man Shat, B.M. Sabirov, A.B. Sadovsky, Z.B. Krumshtein, A.V. Tkachenko, A.A. Timoshenko

VBLHEP

N.V. Gorbunov

LIT

V.N. Shigaev

FLNP

A.D. Rogov

Preparation of project
"Showers of knowledges"

G.A. Shelkov

Project preparation

DLNP

A.V. Guskov, V.O. Gromov, A.S. Zhemchugov, N.N. Khovansky, V.G. Kruchonok

Collaboration
Country or International Organization	City	Institute or Laboratory
Belarus	Minsk	NC PHEP BSU
		IP NASB
Czech Republic	Prague	IP ASCR
		CU
Japan	Wako	RIKEN
Mexico	Puebla	BUAP
Republic of Korea	Seoul	EWU
Romania	Bucharest	ISS
Russia	Moscow	SINP MSU
		VNIIEM Corporation
	Dubna	Raduga
	Korolev	RSC "Energia"
Ukraine	Kiev	NUK
	Kharkov	ISM NASU

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