THEME02-1-1097-2010/2012

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02-1-1097-2010/2012

Priority:

Status:

New

Study of Polarization Phenomena and Spin Effects
at the JINR Nuclotron-M Facility

Leader:	A.D. Kovalenko
Deputies:	N.M. Piskunov V.P. Ladygin R.A. Shindin

Participating Countries, Institutes and International organizations:
Belarus, Bulgaria, CERN, Czech Republic, France, Germany, Japan, Poland, Romania, Russia, Slovak Republic, Sweden, Ukraine, USA, Uzbekistan.

Scientific Programme:
Methodical support of the experiments at polarized beams of the Nuclotron-M and NICA facilities, including development of polarimetery systems. Measurement of analyzing power for the reaction p + CH₂ at polarized proton momentum up to 7.5 GeV/c at the setup ALPOM-2. Measurement of tensor analyzing power and spin correlation in d

p reaction in the deuteron core area with the use of polarized ³He target and polarized deuteron beam of the Nuclotron-M. Study of 2N- and 3N-correlations in deuteron-proton elastic scattering and deuteron break-up reactions at the Nuclotron internal target. Works on modernization of Saclay-Argonne-JINR polarized proton target (setup PPT). The measurements of set of the np spin observables at 0 ^o -

_T(np) (the total np cross section differences), using transverse (T) polarized targets as well as quasi-monochromatic relativistic 1.2-3.6 GeV neutron beams. Determination of the forward scattering NN amplitudes over this energy region. Comparison of the obtained data with QCD motivated model calculations. Study of charge-exchange processes in dp--interactions at the setup STRELA. Development of theoretical models for description of the simplest nuclear systems taking into account relativistic effects, meson and quark-gluon components of the internal movement. Theoretical analysis of experimental data obtained at Nuclotron-M. The study of the properties of strongly interacting matter utilizing polarization phenomena in hadron-nucleon and lepton-nucleon interactions, and in the decay of polarized radioactive atomic nuclei. Study of highly excited nuclear matter and collective effects in nuclear media; delta and other nucleonic resonance excitations on protons and nuclei. Preparation of the setup DELTA-2 and data taking on the light neutral mesons production in polarized nucleons and nucleus interactions.

Expected main results in 2010:

Preparation of perspective program and the project of investigations at light ion polarized beams of the JINR accelerator facility for 2010-2017 taking into account the NICA project realization, including development of polarimetry systems.
Current work in accordance with the approved projects and collaborative protocols within the frames of their real financial support, including:
a) realization of the projects ALPOM-2 and DSS;
b) physics and methodical investigations at the setups STRELA, DELTA-SIGMA, DELTA-2 at the extracted and internal Nuclotron beams, analysis of the collected data;
c) works on modernization of the PPT, preparation of the setup to exposition at the Nuclotron.
Participation in the joint scientific programs and experiments, design and test of the new detectors and electronics for the use at COSY (Julich), SPS (CERN), RHIC (BNL), TJNAF (Newport News), FAIR (GSI) in accordance with the approved collaborative agreements.
Development of the methods to calculation of the amplitudes and polarization characteristics of deuteron fragmentation and deuteron elastic scattering on protons and nuclei taking into account FSI and relativistic effects.

List of projects:
	Project	Leader	Priority (period of realisation)
1.	DSS	V.P. Ladygin A.I. Malakhov T. Yesaka	1 (2010-2012)
2.	ALPOM-2	N.M. Piskunov	1 (2010-2012)

List of Activities

Activity or Experiment

Leader

Laboratory

Responsible
person

Leading Researchers
and number of participants

Methodical support of the
experiments at polarized
beams of the Nuclotron-M
and NICA facilities, develop-
ment of polarimetery systems

A.D. Kovalenko

Project preparation

VBLHEP

V.P. Ladygin + 4 pers.
V.V. Gogolev
L.N. Strunov
V.I. Sharov
A.I. Malakhov
F.P. Nagaytsev
I.A. Savin
V.A. Krasnov + 2 pers.
R.A. Shindin
S.S. Shimansky
V.I. Fimushkin

BLTP

V.V. Burov
V.K. Lukyanov
A.V. Efremov
O.V.Teryaev

DLNP

L.S. Azhgirey
M. Finger + 4 pers.

ALPOM-2

N.M. Piskunov
E. Tomasi-Gustafsson
C.F. Perdrisat

Data taking

VBLHEP

V.V. Glagolev + 2 pers.
I.M. Sitnik
A.A. Povtoreyko + 1 pers.
D.A. Kirillov
Yu.P. Bushuev
P.A. Rukoyatkin
O.P. Gavrishchuk + 6 pers.
S.N. Bazylev + 5 pers.
Yu.T. Kiryushin + 3 pers.

DSS

A.I. Malakhov
V.P. Ladygin
T. Yesaka

Preparation

VBLHEP

S.G. Reznikov + 9 pers.
V.A. Krasnov + 2 pers.
N.B. Ladygina
E.B. Plekhanov
A.P. Ierusalimov

DLNP

L.S. Azhgirey + 2 pers.
G.I. Lykasov

Modernization of the polarized proton target (setup PPT)

N.S. Borisov

Preparation
Data taking

VBLHEP

E.A. Matyushevsky + 5 pers.
E.V. Komogorov
N.G. Anishchenko

DLNP

N.S. Borisov + 2 pers.
Yu.A.Usov + 5 pers.
N.A. Bazhanov
Yu.A. Plis
A.N. Fedorov

Experiments on the programm DELTA-SIGMA

V.I. Sharov

Data taking

VBLHEP

L.N. Strunov
R.A. Shindin + 2 pers.
E.V. Chernykh
L.B. Golovanov + 2 pers.
P.K. Manyakov
N.A. Kuzmin
I.P. Yudin

DLNP

L.S. Azhgirey + 1 pers.
I.L. Pisarev
N.S. Borisov + 1 pers.
Yu.A. Usov + 8 pers.
M. Finger + 4 pers.

FLNP

S.B. Borzakov
Ts. Panteleev

BLTP

N.V. Kochelev
E.A. Kuraev

LIT

R.V. Polyakova + 1 pers.

Experiments on the programm STRELA

N.M. Piskunov

Data taking

VBLHEP

V.V. Glagolev + 1 pers.
N.M. Piskunov + 2 pers.
Yu.P. Bushuev
A.A. Povtoreyko + 2 pers.
D.A. Kirillov + 3 pers.
L.B. Golovanov + 2 pers.
S.N. Bazylev + 2 pers.
V.L. Lyuboshits
P.K. Manyakov + 1 pers.

Theoretical calculations of polarized processes

V.V. Burov
V.K. Lukyanov

Data analysis

BLTP

V.V. Burov + 5 pers.

VBLHEP

N.B. Ladygina
A.P. Ierusalimov

Spin effects in hadron-nucleon and lepton-nucleon interactions

M. Finger

Data analysis

DLNP

E.I. Bunyatova
M. Slunechka
V. Slunechkova
M. Finger(younger)
A. Yanata

Works on the program DELTA-2

V.A. Krasnov
A.B.Kurepin

Modernization
Data taking

VBLHEP

V.A. Krasnov + 4 pers.
S.N. Bazylev + 2 pers.
E.B. Plekhanov
P.K. Manyakov + 3 pers.
A.P. Ierusalimov + 1 pers.
Yu.S. Anisimov + 2 pers.
V.P. Ladygin + 5 pers.

Collaboration
Country or International Organization	City	Institute or Laboratory
Belarus	Minsk	INP BSU
Bulgaria	Sofia	INRNE BAS
		UCTM
CERN	Geneva
Czech Republic	Prague	CU
		CTU
	Brno	ISI ASCR
	Liberec	TUL
	Rez	NPI ASCR
France	Saclay	IRFU
Germany	Dresden	TU Dresden
	Bochum	RUB
	Julich	FZJ
Japan	Tokyo	UT
	Hiroshima	Hiroshima Univ.
	Osaka	RCNP
Poland	Otwock-Swierk	SINS
Romania	Bucharest	INCDIE ICPE-CA
Russia	Gatchina	PNPI RAS
	Moscow	LPI RAS
		RRC KI
	Troitsk	INR RAS
Slovak Republic	Bratislava	IP SAS
	Kosice	IEP SAS
		PJSU
Sweden	Uppsala	UU
Switzerland	Geneva	UniGe
	Villigen	PSI
Ukraine	Kharkov	KFTI NASU
USA	Upton, NY	BNL
	Newport News, VA	JLab
	Norfolk, VA	NSU
	Williamsburg, VA	WM
Uzbekistan	Tashkent	INP UAS
		Assoc."P.-S." PTI

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Study of Polarization Phenomena and Spin Effects at the JINR Nuclotron-M Facility

Study of Polarization Phenomena and Spin Effects
at the JINR Nuclotron-M Facility