THEME02-7-1044-2002/2005

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02-7-1044-2002/2005

Priority:

Status:

In-progress

Search for Effects of Polarized Hidden Strangeness in Nucleons
(Project NIS)

Leader:

A.G. Litvinenko
E.A. Strokovsky

Scientific Programme:
Obtaining new experimental data on total and differential cross sections of

and

production in pp and np interactions at thresholds.
Experimental and theoretical studies of vector meson production mechanisms at threshold in nucleon-nucleon interactions at intermediate energies.
Data on OZI-rule violation, its energy dependence and dependence on isospin of the NN system in the initial state at nucleon energies close to the

and

meson production thresholds.
A new large acceptance magnetic spectrometer for experiments at intermediate energies with multitracking capability and a particle identification system (PID) based on time-of-flight measurements will be constructed at the Nuclotron extracted beam.

Expected main results in 2004:

Mounting of the tracking system at the place of the experiment in bld. 205 (VBLHE). Comission and begin of exploitation. Calibrating measurements at beam.
Purchase of elements and modules of the front-end electronics and power supplies for trackers and PID subsystem. Installation of the first hodoscope station. Comissioning of the time-of-flight system based on RPC-detectors.
Monte-Carlo determination of the setup performance for study of multi-quark hadrons, including pentaquarks.
R&D and test-bench study of one mini-drift chamber for vertex detector.
Study of the physical background and trigger system with the extracted proton beam.
Creation of the software for event reconstruction, on-line and off-line analysis.
Production of the thin liquid hydrogen target.

List of Activities

Activity or project

Spokespersons

Status

NIS

A.G. Litvinenko
E.A. Strokovsky

Preparation

Collaboration
Country or international organization	City	Institute or Laboratory
Germany	Munich	LMU
Georgia	Tbilisi	HEPI TSU
Poland	Cracow	JU

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Search for Effects of Polarized Hidden Strangeness in Nucleons (Project NIS)

Search for Effects of Polarized Hidden Strangeness in Nucleons
(Project NIS)