THEME05-2-1040-2001/2006

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05-2-1040-2001/2006

Priority:

Status:

Approved for completion
in 2006

Nucleus and Particle Interactions at Intermediate Energies

Leader:

V.I. Komarov

Scientific Programme:
Investigation of processes of strong, weak and electromagnetic interaction of elementary particles and light nuclei at intermediate energies with the aim of determining symmetries and dynamics of the interactions. Development and construction of setups for experiments at accelerators (JINR phasotron, PSI meson factory, COSY proton synchrotron) for obtaining new information and testing the present theoretical views in the topics. Development of projects for new experiments and experimental methods for intermediate-energy physics.

Expected main results in 2006:

Complete analysis of the received in 2004 data on radiative decay of pion (PIBETA).
Complete handling and analysis of data on process pd (pp)_s n in the 0.5-2.0 GeV energy range. Determination of the energy dependence of the differential cross section of pp (pp)_s ⁰ process at ⁰ in the energy range 0.8-2.0 GeV (ANKE COSY).
Design and development of the original gamma-detector composed on the base of BGO and plastic. (The peculiarities of the detector are it`s enlarged ability to suppress the cosmic background and the improved line shape of gamma-quanta of energies about of 25 MeV). Determination of the performance characteristics of the detector (CATALYSIS).
Further handling and analysis of data (30 000 events) obtained at the pion beam of the JINR phasotron. Submitting for publication of 3 articles with results of the nHe-interaction study. Performing of 2 beam-time runs (of 129 hours each) with exposition at the pion beam of 70-110 MeV (DUBTO).
Study at the PSI meson factory of the influence of uniaxial deformation of crystal on behaviour of the shallow acceptor impurity in the diamond-like semiconductors. Investigation of features of the magnetic structure of Holmium at the spin-slip transitions (MUON).
Reconstruction of the communication lines of the FAMILON setup. Test of a new readout electronics for multiwire chambers. Test run of the FAMILON experiment at the muon beam of the phasotron (on condition that the beam line IX is recovered) (FAMILON).
Development of the technique for production of the waterproof silica aerogel samples. Manufacture of the aerogel plates of the 16016030 mm ³ size and with refractive index n=1.03 for assembling the Cherenkov counter of a large area (AEROGEL).
Construction and test of the "BGO-Ball" detector for registration of gamma-quanta from positronium decay. Design of superconducting solenoid with magnetic field of 4 T (PALM).

List of projects:
	Project	Leader	Priority (period of realisation)
1.	DUBTO	N.A. Russakovich D.B. Pontecorvo	1 (1998-2006)
2.	CATALYSIS	V.G. Zinov	1 (2003-2006)
3.	МЮОН	V.N. Duginov T.N. Mamedov	1 (1997-2006)
4.	FAMILON	V.N. Duginov V.A. Gordeev	1 (2000-2006)
5.	PALM	I.N. Meshkov	1 (2006-2006)

List of Activities

Activity or Experiment

Leader

Status

PIBETA

S.M. Korenchenko

Data taking

ANKE COSY

V.I. Komarov

Data taking

DUBTO

N.A. Russakovich
G. Piragino

Data taking

CATALYSIS

V.G. Zinov

Preparation
Data taking

MUON

V.N. Duginov
T.N. Mamedov

Data taking

FAMILON

V.A. Gordeev
V.N. Duginov

Preparation

AEROGEL

A.I. Filippov

Preparation
Production

PALM

I.N. Meshkov

Preparation

Collaboration
Country or international organization	City	Institute or Laboratory
Azerbaijan	Baku	IP ANAS
Belarus	Minsk	NC PHEP BSU
		RINP BSU
Bulgaria	Sofia	SU
Croatia	Zagreb	RBI
Canada	Vancouver	TRIUMF
Georgia	Tbilisi	HEPI TSU
Germany	Aachen	RWTH
	Heidelberg	Univ.
	Julich	FZJ
	Cologne	Univ.
	Munster	UM
	Rossendorf	FZR IKH
	Stuttgart	MPI-MF
Italy	Frascatti	INFN LNF
	Rome	Univ. I
	Turin	INFN
JINR	Dubna	BLTP
		FLNR
		LIT
Netherlands	Delft	TUDelft
Poland	Otwock-Swierk	SINS
Russia	Alexandrov	VNIISIMS
	Gatchina	PNPI RAS
	Moscow	SSC-ITEP
		GPI RAS
		MSU
		SINP MSU
		SSC RRC KI
	Sarov	RFNC-VNIIEF
	Troitsk	INR RAS
Switzerland	Zurich	Univ.
		ETH
	Villigen	PSI
USA	Charlottesville, VA	UVa
	Pittsburgh, PA	Univ.
	Tucson, AZ	UA

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Nucleus and Particle Interactions at Intermediate Energies

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