Next themePrev. theme
to field of reseachto contents

03-1-1020-95/2005
Priority:1
Status: In-progress

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

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

Scientific Programme:
  1. A high-acceptance high-resolution spectrometer for electron pair detection in heavy-ion collisions is under construction at SIS (Darmstadt). The physics motivation includes the investigation of in-medium modification of light vector mesons ( , , ) as well as the study of the dilepton continium below the / -region in 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 work on track-finding software in the drift chamber system and data analysis are in progress.

  2. Research and development of new Position Sensitive Detectors with high spatial resolution.


Expected main results in 2004:
List of Activities
  Activity or project Spokespersons
Status
HADES
Position Sensitive Detectors with a high spatial resolution.
Yu.V. Zanevsky
Preparation
Data taking

Collaboration   
Country or international
organization
City Institute or Laboratory
Bulgaria Sofia INRNE BAS
Czech Republic Prague IMMC ASCR
Rez NRI
Cyprus Nicosia UCY
Germany Darmstadt GSI
Frankfurt/Main GU
Giessen JLU
Heidelberg Univ.
Munich TUM
Rossendorf FZR
Italy Catania INFN LNS
Milan Univ.
Hungary Debrecen DE
JINR Dubna BLTP
FLNP
LIT
Poland Cracow JU
Portugal Coimbra Univ.
Russia Moscow SSC-ITEP
IC RAS
MEPhI
Chernogolovka ISMAN
Troitsk INR RAS
Slovak Republic Bratislava IP SAS
Spain Santiago de Compostela USC
Valencia IFC
Ukraine Kiev BITP NASU
The USA Williamsburg, VA WM
Norfol, VA NSU

Next themePrev. theme
to field of reseachto contents