THEME03-1-0983-92/2004

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03-1-0983-92/2004

Priority:

Status:

Approved for completion
in 2004

Study of Multiple Production in 4-geometry and Construction of the SPHERE Spectrometer. First-Line Experiments at the Nuclotron

Leader:

A.I. Malakhov

Scientific Programme:
Development of the SPHERE spectrometer and experiments on cumulative particle production and correlated phenomena. Search for manifestation of quark-gluon degrees of freedom in collisions of relativistic nuclei and phase transitions in nuclei (SPHERE, FASA, PHENIX) and exotic resonances. Study of nuclear multifragmentation processes and hyper- and

-nuclei production (FASA, GIBS). The Nuclotron internal target experiments: research using the two-arm EMCalorimeter and deuteron spin structure investigation (SPHERE). Cumulative particle production by tenzor polarized deuterons. Asymptotics in nuclear collisions and nucleon clusters. Development of the data base of the bubble chamber data. Detector development for relativistic heavy-ion experiments at the SPS (NA49), RHIC (PHENIX). Investigation of the ³He spin structure at RIKEN. Construction of some prototypes of the front-end electronics for primary processing; some prototypes of the logic processor; interface and network modules to organize a multichannel multiprocessor data acquisition system. Some developments of VBLHE-oriented architectures to construct a data acquisition system. Obtaining the data on heat generation, neutron multiplication, spectra, fission and radiation capture in the model uranium blanket and target-converter of the installation "Energy plus Transmutation". Studies of transmutation cross sections of radioactive nuclear wastes (iodine-129, neptunium-237 and plutonium-239). Study of fragmentation of light stable and radioactive nuclei in emulsions including irradiation of emulsion stacks with beams of secondary nuclei and data analysis.

Expected main results in 2004:

Publication of the results on studying the tenzor analyzing power A_yy for the reaction of deuteron fragmentation into cumulative pions at nonzero angles.
Publication of the results on studying the A_t-dependence of the reaction cross-section of deuteron fragmentation into pions in the twice cumulative region.
Investigation of the properties of nuclear multifragmentation induced by relativistic carbon ions as a function of beam energy. Beam tests of the upgraded 4-setup (FASA-2).
Study of exotic nuclei interactions (He, Li, B neutron deficit isotopes) in emulsions including irradiation of emulsion stacks with beams of secondary nuclei and data analysis.
Measurements and data analysis of spin effects of neutral meson production in polarized proton interactions. First experiments using the Nuclotron internal target to search for exotic eta-nucleus and multiquark state production.
Maintence of the system for measuring the beam intensity at the Nuclotron.
Design of the prototypes of two nuclear electronic devices.
Design of the prototypes of two devices in basic bus standards.
Data taking from the stand of the CMS muon chambers.
Investigation of neutron and fission fragment spectra in the target and blanket of the installation "Energy plus Transmutation". Study of transmutation cross-sections of radioactive wastes.
Investigation of the deuteron and ³He spin structure using the polarized deuteron beam at the Nuclotron and RIKEN.
Preparation of the detectors for the LNS and PHe3 projects.
Preparation of the prototipe of aerogel counters for PHENIX experiment at RHIC.
Participation in data taking and data analysis of PHENIX experiment.
Irradiation of emulsions with beams of light radioactive isotopes of boron and carbon.

List of Activities

Activity or project

Spokespersons

Status

a) SPHERE

A.G. Litvinenko
V. Penev

Data taking

b) SPHERE (intern. target)

A. G. Litvinenko
V. Penev

Preparation

GIBS

J. Lukstins

Data taking

PIKASO

L.S. Zolin
V.F. Peresedov

Data taking

FASA

V.A. Karnaukhov

Data taking

NA49 (TOF)

A.I. Malakhov
G.L. Melkumov

Data taking

ELECTRONICS

V.A. Smirnov

Preparation
Data taking

LNS

V.P. Ladygin

Preparation
Data taking

PHe3

A.I. Malakhov
T. Uesaka

Preparation

PHENIX

A.G. Litvinenko

Data taking
Data analysis
Preparation

10.

BECQUERELL

P.I. Zarubin
S. Vokal

Preparation
Data taking

11.

Energy plus
Transmutation

M.I. Krivopustov
D. Chultem

Preparation
Data taking

12.

SCAN-2

S.V. Afanasiev

Data taking

13.

DELTA-2

V.A. Krasnov
A.B. Kurepin

Preparation
Data taking

Collaboration
Country or international organization	City	Institute or Laboratory
Armenia	Yerevan	YerPhI
		YSU
Australia	Sydney	Univ.
Azerbaijan	Baku	IP ANAS
Belarus	Minsk	JIPENR NASB
Bulgaria	Sofia	SU
		INRNE BAS
		RAC BAS
		UCTM
CERN	Geneva
Czech Republic	Prague	CU
		CTU
	Plzen	"Skoda"
	Rez	NPI ASCR
		NRI
Democratic People's Republic of Korea	Pyongyang	INE SCNR
Egypt	Cairo	NRC AEA
	Giza	CU
Georgia	Tbilisi	TSU
		HEPI TSU
		IP GAS
Germany	Darmstadt	TUD
	Karlsruhe	Univ.
	Marburg	UM
	Siegen	Univ.
	Julich	FZJ
Greece	Thessaloniki	AUTH
Japan	Nagoya	Nagoya Univ.
	Osaka	RCNP
	Tsukuba	Univ.
	Wako	RIKEN
JINR	Dubna	DLNP
		LPP
		LIT
		BLTP
		FLNP
		DRRR
		SOD
India	Shillong	NEHU
Italy	Catania	Univ.
		INFN LNS
	Turin	INFN
Kazakhstan	Almaty	PTI MS-NAS RK
		INP NNC RK
Mongolia	Ulaanbaatar	IPT MAS
		NUM
Poland	Cracow	NINP
	Lodz	UL
	Lublin	IP MCSU
	Otwock-Swierk	SINS
		IAE
	Warsaw	SINS
		WU
		ETI
		FP WUT
		IRE WUT
		IEP WU
Romania	Bucharest	UB
		IFIN-HH
		INOE2000
		ISS
Russia	Gatchina	PNPI RAS
	Dimitrovgrad	RIAR
	Dubna	"Dubna" Univ.
	Moscow	SINP MSU
		MSU
		LPI RAS
		SSC-ITEP
		MEPhI
		SSC RRC KI
		VNIINM
		VNIIAM
		KIAM RAS
	Novosibirsk	BINP SB RAS
	Obninsk	SRR-IPPE
	Ozersk	"Mayak Plant"
	Protvino	SRC-IHEP
	St. Petersburg	BSTU
		KRI
	Sarov	RFNC-VNIIEF
	Tomsk	RINP TPU
	Troitsk	INR RAS
	Vladivostok	FENU
Serbia and Montenegro	Belgrade	Univ.
	Podgorica	Univ.
Slovak Republic	Bratislava	CU
		IP SAS
	Kosice	UPJS
Sweden	Lund	LU
	Stockholm	KTH
Ukraine	Kharkov	KFTI NASU
		KNU
		ISC NASU
	Kiev	BITP NASU
		INR SC NASU
The USA	Berkeley, CA	Berkeley Lab
	Iowa City, IA	UI
	Los Alamos, NM	LANL
	Upton, NY	BNL
Uzbekistan	Samarkand	SSU
	Tashkent	INP UAS
		Assoc."P.-S." PTI
Vietnam	Hanoi	IP NCNST

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