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MPD concept, structure & plans. V.Kekelidze, Round Table IV, Dubna. Introduction. The M ulti P urpose D etector ( MPD ) is proposed for a study of hot and dense baryonic matter in collisions of heavy ions over mass range A=1-197 at a centre-of-mass energy √s NN = 4-11 GeV ( +79 Au).
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MPD concept, structure & plans V.Kekelidze, Round Table IV, Dubna
V.Kekelidze, Round Table IV Introduction The MultiPurpose Detector (MPD) is proposed for a study of hot and dense baryonic matter in collisions of heavy ions over mass range A=1-197 at a centre-of-mass energy √sNN = 4-11 GeV (+79Au). The MPD experiment is foreseen to be carried out at a future JINR accelerator complex facility NICA which is designed for averaged luminosity L = 1027 cm-2s-1.
V.Kekelidze, Round Table IV 11 September 2009 Main goal – search for mixed phase and critical end-point • Proposed tasks • Yield & spectra of particles (charged, neutrals, strange / multi ) • Study of the K/π(strangeness to entropy) ratio • Anisotropic collective flow • Femtoscopy (momentum correlations) • e-m probes • P (CP) - asymmetry • Other studies with MPD • Dense cold matter at NICA
V.Kekelidze, Round Table IV Physics motivation LE-RHIC scan NICA energy range
V.Kekelidze, Round Table IV MPD Collaboration • Joint Institute for Nuclear Research • Institute for Nuclear Research, RAS, RF • Bogolyubov Institute for Theoretical Physics, NAS, Ukraine • Nuclear Physics Institute of MSU, RF • Institute Theoretical & Experimental Physics, RF • St.Petersburg State University, RF • Institute of Applied Physics, AS, Moldova • Institute for Nuclear Research & Nuclear • Energy BAS, Sofia, Bulgaria • Institute for Scintillation Materials, Kharkov, Ukraine • State Enterprise Scientific & Technology • Research Institute for Apparatus construction, Kharkov, Ukraine • Particle Physics Center of Belarusian State University • Members of the Collaboration • JINR ~ 100 • Other institutes 39 • Institutions • JINR • 10 institutes from 5 countries • The Collaboration is permanently growing • New members – are welcome
V.Kekelidze, Round Table IV Progress of the MPD project preparation • The first MPD concept was presented in LoI • issued in February 2008 • - it is now modified • Editorial board • Golovatyuk V. • Kekelidze V. • Madigozhin D. • Murin Yu. • Nikitin V. • Rogachevsky O. • Toneev V. • Referee board • Gorbunov N. • Kolesnikov V. • Meshkov I. • Olchevski A. • Potrebenikov Yu. • Topilin N. • Tyapkin I. • Zanevsky Yu. • The first version of MPD CDR was issued • in June 2009 • Now the version 0.6 • is available • It will be developed until • ~ mid of 2010
V.Kekelidze, Round Table IV CDR preparation Responsibilities • Physics coordination - Sisakian A., Sorin A., • Toneev V. • Technical coordinator - Golovatyuk V. • Software, MC & tracking coordinator - Rogachevsky O. Main contributors to the physics tasks • Murin Yu.A. • Nikitin V.A. • Olchevski A.G. • Stavinskiy A.V. • Toneev V.D. • Tyapkin I.A. • Kolesnikov V.I. • Krumshtein Z.V. • Lednicky R. • Lokhtin I.P. • Malinina L.V. • Musulmanbekov G.J.
V.Kekelidze, Round Table IV Subdetector groups • TPC - Yu.Zanevski et. al. • ECal - I.Tyapkin, A.Olchevsky et.al. • TOF - V.Golovatyuk et.al. • Straw wheels - V.Peshekhonov et.al. • ZCal - A.Kurepin et.al. • CPC - Yu.Kiryushin et.al. • FFD - V.Yurevich et.al. • BBC - R.Zulkarneev et.al. • DAQ - V.Slepnev, S.Bazylev et.al. • IT - Yu.Murin, V.Nikitin et.al. • The CBM-MPD STS consortium … in IT silicon module development is well progressing
Charge multiplicity distribution in central Au-Au collisions V.Kekelidze, Round Table IV
V.Kekelidze, Round Table IV Au-Au collision at 9 GeV/n for three regions of pseudorapidity |η| < 1. 1. < η < 2.65 η> 2.65 Geant-4 simulation Particle momenta in the MPD
V.Kekelidze, Round Table IV Requirements to the Detector • The detector to explore phase diagram of strongly interacting matter • in a high track multiplicity environment • has to cover a phase space: |η|<2, p = 0.1 - 3 GeV/c • be functional at high interaction rates (several kHz), • comprise high efficiency • & good particle identification capabilities • based on the recent detector developments • to be of reasonable cost.
V.Kekelidze, Round Table IV CentralDetector - CD & two ForwardSpectrometers (optional) – FS-A&FS-B MPD general view
V.Kekelidze, Round Table IV CD dimension
V.Kekelidze, Round Table IV MPD scheme 3 stages of putting into operation 2-nd stage IT,EC-subdetectors TOF RPC ZDC 3-d stage F-spectrometers (optional ?) TPC ECal EC Tracker 1-st stage barrel part (TPC, Ecal, TOF) + ZDC, BBC, S-SC, …
V.Kekelidze, Round Table IV CD η-regions
V.Kekelidze, Round Table IV CD parts in η-regions
V.Kekelidze, Round Table IV • New electronics providing the rate of ~ 6 kHz • Max transparency (low X0) of end cap structure • Spatial resolution σz = 1 mm, σx = 0.6 mm TPC new approach
V.Kekelidze, Round Table IV TPC: Read-Out electronics requirement and design
Conceptual layout of IT V.Kekelidze, Round Table IV Strip pitch = 100 mkm Stereo angle = 150 provides σxy = 23μm and σz=120 μm
V.Kekelidze, Round Table IV Neutral kaon & hyperon detection V0 reconstruction Neutral kaon & Lambda decays invariant mass reconstruction
Particle identification V.Kekelidze, Round Table IV TPC (ionization) & TPC+TOF (mass reconstruction) TPC using ionization
New design of straw wheels V.Kekelidze, Round Table IV
V.Kekelidze, Round Table IV ECAL – “shashlyk” type modules with APD readout
Cathode pad chamber tracker V.Kekelidze, Round Table IV based on Rochacell 31HF foam
V.Kekelidze, Round Table IV Integration and services
V.Kekelidze, Round Table IV ECal Solenoid + ECal Installation sequence & support structure rails Solenoid + ECal +TOF+TPC Solenoid + ECal +TOF
V.Kekelidze, Round Table IV CD assembly completed (without IT) ECal TPC Rails TOF Solenoid
V.Kekelidze, Round Table IV Timetable of the MPD works the first colliding beams for MPD is expected in 2015
Summary V.Kekelidze, Round Table IV • The version 0.6 of CDR is available • MPD main features (advantages) • The CDR development is continued • R&D activity is in progress • The MPD Collaboration is growing • capability to work at high luminosity • high rate of event recording • hermeticity - towards 4 geometry • smooth scan in • - relevant energy region • A-number • b-parameter
Thankyou! V.Kekelidze, Round Table IV “The one who knows his limits never fails...” ...From the book "Dao De Jing" (author Lao Tzu) ... VI-V century BC
