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02-1-1020-95/2008
Priority:1
Status: In-progress

High-Acceptance Toroidal Spectrometer HADES.
R&D of New Particle Detectors

Leader:   A.I. Malakhov
Scientific leader:    Yu.V. Zanevsky

Scientific Programme:
  1. A High-Acceptance Di-Electron Spectrometer for electron pair detection in heavy-ion collisions has been constructed and commissioned on the SIS (Darmstadt). The physics motivation includes the investigation of in-medium modification of light vector mesons as well as study of the dilepton continium in the hot dense hadronic matter. The main detector components include a ring-imaging Cherenkov detector (RICH) for electron identification, a superconducting magnet with toroidal geometry, a drift chamber system for tracking before and behind the field region and an electron trigger array with time-of-flight measurement and shower detection. The spectrometer has the geometric acceptance of almost 50% for the electron pair and a mass resolution of 1.0% in the / -region. Special attention will be paid to the investigation of different aspects of dilepton and photon radiation from a hot and dense nuclear medium, dilepton sources in nuclear interactions, asymmetry and anisotropy of dielectrons and photons. High-resolution low-mass multilayer Drift Chambers for the central part of the HADES spectrometer were constructed at VBLHE JINR. The analogue readout electronics with high density of integration and low power dissipation was developed at VBLHE; mass production of this electronics was carried out for the drift chamber system of the spectrometer. The track-finding and track-fitting software in the drift chamber system and data analysis has been performed in VBLHE too.

  2. Research and development of new Position Sensitive Detectors with high spatial resolution for nuclear physics and other field of science.
Expected main results in 2007:
List of projects:
  Project Leader Priority
(period of realisation)
1. HADES Yu.V. Zanevsky 1   (1996-2008)


List of Activities
  Activity or Experiment Leader
Status
HADES
Position Sensitive Detectors
with a high spatial resolution.
A.I. Malakhov
Yu.V. Zanevsky
Preparation
Data taking

Collaboration
Country or international
organization
City Institute or Laboratory
Belarus Minsk NC PHEP BSU
Czech Republic Prague IMMC ASCR
Cyprus Nicosia UCY
Germany Darmstadt GSI
Frankfurt/Main GU
Giessen JLU
Heidelberg Univ.
Munich TUM
Rossendorf FZR
Italy Catania INFN LNS
Milan Unimi
Hungary Debrecen DE
JINR Dubna BLTP
FLNP
Poland Cracow JU
Portugal Coimbra Univ.
Russia Moscow ITEP
IC RAS
MEPhI
Chernogolovka ISMAN
Troitsk INR RAS
Slovak Republic Bratislava SAS
Spain Santiago de Compostela USC
Valencia IFIC
USA Williamsburg, VA WM
Norfol, VA NSU

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