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JINR Contribution to the CBM experiment

Report at the 5th Workshop on the Scientific Cooperation Between German Research Centers and JINR,

Dubna, January 17-19, 2005

A.I.Malakhov

Joint Institute for Nuclear Research, Dubna malakhov@lhe.jinr.ru

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Superconducting Dipole Magnet

Transition Radiation Detector (TRD)

JINR participation:

Simulation (tracking, RICH, magnetic field)

Physics

The present JINR facility NUCLOTRON could be used as a test bench for CBM detectors

Straw Transition Radiation Tracker (TRT)

Compressed Barionic Matter (CBM)

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Letter of Intent

for the Compressed Baryonic Matter Experiment

at the Future Accelerator Facility in Darmstadt

The CBM collaborationDarmstadt, January 2004

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Task Institution

Feasibility study D-Meson identification GSI Darmstadt, Czech Acad. Science Rez,Techn. Univ. Prague

Feasibility study low-mass vector meson identification via dilepton pairs

Univ. Krakow, JINR-LHE Dubna

Feasibility study charmonium identification INR Moscow

Simulations hadron identification via TOF Heidelberg Univ., Kiev Univ., NIPNE Bucharest, INR Moscow, RBI Zagreb

Simulation tools GSI Darmstadt

Tracking KIP Univ. Heidelberg, Univ. Mannheim, JINR-LHE Dubna, JINR-LIT Dubna

Silicon Pixel Detector IReS Strasbourg, Frankfurt Univ., GSI Darmstadt, RBI Zagreb, Krakow Univ.,

Silicon Strip Detector SINP Moscow State Univ., CKBM St. Petersburg, KRI St. Petersburg

R&D on RPC TOF detector system with read-out electronics LIP Coimbra, Univ. Santiago de Compostela, Univ. Heidelberg, GSI Darmstadt, NIPNE Bucharest, INR Moscow, FZR Rossendorf, IHEP Protvino, ITEP Moscow, Korea Univ. Seoul, RBI Zagreb, Univ. Krakow, Univ. Marburg

R&D on fast gaseous detectors for TRD JINR-LHE Dubna, GSI Darmstadt, Univ. Münster, PNPI St. Petersburg, NIPNE Bucharest

R&D on straw tube tracker (TRD) JINR-LPP Dubna, FZR Rossendorf

R&D on Ring Imaging Cherenkov Detector (RICH): mirror and UV detector

IHEP Protvino, GSI Darmstadt, PNPI St. Petersburg

R&D on RICH radiator gas system Pusan Nat. Univ.

Design and construction of an electromagnetic calorimeter (ECAL)

ITEP Moscow, Univ. Krakow, Univ. Frankfurt

Diamond microstrip detector GSI, Univ. Mannheim

Trigger and Data Acquisition KIP Univ. Heidelberg, Univ. Mannheim, JINR LIT Dubna, GSI Darmstadt, Univ. Bergen, KFKI Budapest, Silesia Univ. Katowice, PNPI St. Petersburg, Univ. Warsaw

Design of a superconducting dipole magnet JINR-LHE Dubna, GSI Darmstadt

Calculation of radiation doses Kiev Univ.

Modification of HADES for 8 AGeV Czech Acad. Science Rez

Delta electrons GSI Darmstadt

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Laboratory of High Energies

Leader A.I.Malakhov

Laboratory of Particle Physics

Leader V.D.Peshekhonov

Transition Radiation Detector (TRD)

Straw Transition Radiation Tracker (TRT)

Software (track and pattern reconstruction, RICH, magnetic field)

Superconducting Dipole Magnet

Physics

Simulation (Track Track finder, Track fitter)finder, Track fitter)

Laboratory of Information Technologies

Leader V.V.Ivanov

Laboratory of Theoretical Physics

Leader D.Blaschke

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DEVELOPMENT of FAST GAS DETECTORS for TRD

Yu. Zanevsky Laboratory of High Energies

Joint Institute for Nuclear Research

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Development and Construction of Transition Radiation Detector for ALICE

(JINR Participation)________________________________________________________

Collaboration: Heidelberg, GSI, Munster, Frankfurt, Dubna, Bucharest.Coordinator from JINR - Yu. Zanevsky

Main task of LHE JINR :• Development and construction of 100 Chambers for Transition Radiation Detector • Testing at a laboratory conditions and on the beam at CERN• Detector Commissioning on the beam at CERN

At blg. 40 of LHE JINR has been constructed:

■ Rooms (including 3 clean rooms ~120 m2 , class better than 10.000)■ Climate facility at clean rooms ■ Winding machine under PC control, tables, special tools e.t.c.

Main goal: e/π discrimination of > 100 (p > 1 GeV/c) Position resolution of ~ 200 μm Large area ( 700 m2, 6 layers)

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Development and Construction of Transition Radiation Detector for ALICE

(JINR Participation)________________________________________________________

Winding Machine under operation Transfer of Wire Planes on TRD chambers

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Development and Construction of Transition Radiation Detector for ALICE

(JINR Participation)________________________________________________________

Assembling of TRD chamber Testing of TRD chamber with X-ray tube

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Tests of prototypes (MWPC, GEM) / July 2004 at SIS /

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2 type of Detectors (from LHE JINR) has been tested on the beam at GSI in July 2004 with Ar/CO-2 and Xe/CO-2 gas mixture:

1) MWPC (with drift gap) 2 mm anode-cathode gap 8 mm drift gap 2 mm anode pitch 10 x 10 cm ² area PAD readout (3 x 4 mm ²)

2) GEM-3 3 mm drift gap 3 ampl. stages 10 x 10 cm ² area PAD readout (10 x 20 mm ²)

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Borisovskay Z. , Matyushevsky E., Shabunov A.

The Superconducting Dipole Magnet

Laboratory of High Energies Joint Institute for Nuclear Research

P.G.Akishin Laboratory of Information Technologies

Joint Institute for Nuclear Research

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Superconducting Dipole Magnet

Large Aperture 1x1 m2

The field integral 1 TmThe weight of the iron yoke is 67000 kg

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The CBM Superconducting Dipole Magnet

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The Possible Variant of Superconducting Dipole Magnet

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Track finder for STS

with conformal mappingO. Rogachevsky

Laboratory of High Energies Joint Institute for Nuclear Research

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V.Peshekhonov

Laboratory of Particle Physics

Joint Institute for Nuclear Research

CBM STRAW TRANSITION RADIATION DETECTOR/TRACKER (TRT)

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CBM STRAW TRT

V.Peshekhonov 2 03.10.2004

Target-Detector distance:

1-st module - 4 m

2-d - 6 m

3-d - 8 m

Angle Acceptance – from 50 mrad to 500 mrad

Sensitive area X(horizontal) x Y(vertical) for 1-st, 2-d, 3-d module:

~ (5.8 x 3.9) m2; (8.7 x 5.8) m2; (11.6 x 7.7) m2

Space Resolution - < 200 mkm

Rejection of electrons from pions ~ 300

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Software (track and pattern reconstruction, RICH,

magnetic field)

V.V. Ivanov

Laboratory of Information Technologies

Joint Institute for Nuclear Research

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3D track recognition by the track-following method (G.Ososkov, A.Airiyan, A.Lebedev, S.Lebedev)

Accurate momentum restoration based on orthogonal polynomial sets (E.P.Akishina, V.V.Ivanov, E.I.Litvinenko)

Application of Kalman filter for momentum restoration (S.A.Baginyan, V.V.Ivanov, P.V.Zrelov)

Polynomial approximation in a problem of accurate momenta reconstruction (P.G.Akishin)

RICH ring guidance by the Hough transform approach charged particle tracing through inhomogeneous (B.Kostenko, G.Ososkov, A.Solovjev)

Looking for the STS “secondary” tracks (V.Ivanov, G.Ososkov, A.Airiyan)

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D.Blaschke

General topics which can be covered by Laboratory of Theoretical Physics in CBM

program

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1. Hadron masses/decays in chiral quark/qluon models (M.Ivanov, M.Volkov)

2. Hadron-hadron cross sections including D-meson properties and J/ψ breakup (D.Blaschke, M.Ivanov, N.Kochelev)

3. Hadrons in hot, dencse matter including in-medium mesons (M.Volkov, V.Yudichev, D.Blaschke, E.Kuraev, A.Radzhabov)

4. Equation of state and QCD phase diagram (D.Blaschke, V.Toneev, V.Yudichev, Khvorostukhin)

5. Kinetics and hydrodynamics of heavy-ion collisions with application to analysis of various hadronic and photon/lepton observables (V.Toneev, V.Skokov)

6. Relativistic effects in hadron-nucleus scattering (S.Bondarenko, V.Burov, V.Chabanov)

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Total cost in 2005 (funding required from BMBF ):

Materials and equipment for R&D of fast gas detectors

36.0 k€

Materials and equipment for straw tube tracker prototype

22.0 k€

Computers for development of Level-1 trigger 18.0 k€

Scientific missions 14.0 k€

Sum 90.0 k€

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ITEM MEuro

TRD +TRT detectors (R&D, prototyping, construction)

6.4

Dipole Superconducting Magnet (R&D, construction)

3.0

Physics, simulation, software, computing 0.7

SUM 10.1