Author: Sidorin, A.O.
Paper Title Page
TUYCH01
 Application of the Beam Cooling Methods at the NICA Project  
 
  • G.V. Trubnikov, I.N. Meshkov, A.O. Sidorin, A.V. Smirnov, S. Yakovenko
    JINR, Dubna, Moscow Region, Russia
  • T. Katayama
    GSI, Darmstadt, Germany
  
  The Nuclotron-based Ion Collider fAcility (NICA) is a new accelerator complex being constructed at JINR aimed to provide experiments with colliding heavy ions up to Au for experimental study of hot and dense strongly interacting baryonic matter and search for possible signs of the mixed phase and critical endpoint in the centre-of-mass energy range sq.root(SNN) = 4-11 GeV. This facility includes new 3 MeV/u linac, 600 MeV/u booster synchrotron (Booster), upgraded superconducting (SC) synchrotron Nuclotron (4,5 GeV/u maximal kinetic energy for ions with Z/A = 1/3) and collider consisting of two vertically separated SC rings, which provide average luminosity of the order of 10e27cm2s1 at high energies. Beam cooling systems are proposed for elements of the NICA project. The Booster synchrotron will be equipped with an electron cooling system. Two beam cooling systems – stochastic and electron will be used in the collider rings. Parameters of the cooling systems, proposed scenario of operation and peculiarities of their design intended to achieve required beam parameters are presented in this report.  
slides icon Slides TUYCH01 [3.574 MB]  
 
TUACH02 Long Term Beam Dynamics Simulation with the BETACOOL Code 60
 
  • A.V. Smirnov, A.O. Sidorin
    JINR, Dubna, Moscow Region, Russia
  
  General goal of the BETACOOL program is to simulate long term processes (in comparison with the ion revolution period) in the ion storage ring leading to variation of the ion distribution function in 6 dimensional phase space. The ion beam motion inside a storage ring is supposed to be stable and it is treated in linear approximation. Results of the numerical simulation of the beam dynamics for new projects FAIR (GSI, Germany) and NICA (JINR, Russia) are presented.  
slides icon Slides TUACH02 [1.004 MB]  
 
WEZCH03 Status of the Nuclotron 117
 
  • A.O. Sidorin, N.N. Agapov, A.V. Alfeev, V. Andreev, V. Batin, A.V. Butenko, D.E. Donets, E.D. Donets, A.V. Eliseev, V.V. Fimushkin, A.R. Galimov, E.V. Gorbachev, A. Govorov, E.V. Ivanov, V. Karpinsky, V.D. Kekelidze, H.G. Khodzhibagiyan, A. Kirichenko, A.G. Kobets, A.D. Kovalenko, O.S. Kozlov, N.I. Lebedev, I.N. Meshkov, V.A. Mikhailov, V. Monchinsky, S. Romanov, T.V. Rukoyatkina, N. Shurkhno, I. Slepnev, V. Slepnev, A.V. Smirnov, A. Sorin, G.V. Trubnikov, A. Tuzikov, B. Vasilishin, V. Volkov
    JINR, Dubna, Moscow Region, Russia
  • O.I. Brovko, D.E. Donets, A.V. Philippov
    JINR/VBLHEP, Dubna, Moscow region, Russia
  
  One of the goals of present Nuclotron development is to test operational modes, diagnostic and beam control equipment required for R&D of the NICA collider elements. Main achievement in this direction are descussed. Results of the last runs of the Nuclotron operation are presented.  
slides icon Slides WEZCH03 [3.582 MB]  
 
MOPPA017 Collider of the NICA Accelerator Complex: Optical Structure and Beam Dynamics 278
 
  • O.S. Kozlov, A.V. Eliseev, H.G. Khodzhibagiyan, S.A. Kostromin, I.N. Meshkov, A.O. Sidorin, G.V. Trubnikov
    JINR, Dubna, Moscow Region, Russia
  
  Accelerator complex NICA, developed in VBLHEP JINR, must provide an ion-ion (Au79 +) and ion-proton collisions at energies of 1-4.5 GeV/u, as well as experiments on collisions of polarized proton-proton and deuteron-deuteron beams. The calculations of the optical properties of superconducting collider rings have been aimed to create appropriate conditions for the collisions of beams and obtaining the required luminosity parameters in the working range of energies. The collider characteristics and the beam dynamics have been worked out in most for ion-ion mode of the complex.  
 
TUPPB003 Progress in NICA Booster Design 310
 
  • A.S. Valkovich, O.S. Kozlov, I.N. Meshkov, V.A. Mikhaylov, A.O. Sidorin, G.V. Trubnikov
    JINR, Dubna, Moscow Region, Russia
  
  New collider facility NICA * is envisioned to be built at The Joint Institute of Nuclear Research. The work presented explores issues of correction system of the Booster Synchrotron. The optimal arrangement of Beam Position Monitors and Orbit Correctors along the ring was investigated in order to achieve decent quality of the orbit correction. The SVD properties of the orbit correction system are presented. Optimal arrangement of the sextupole lenses for the correction of chromaticity of the ring was obtained. The reduction of the dynamical aperture due to the presence of the sextupole lenses was minimized by means of proper choice of betatron phase advances between the lenses.
* Design and construction of Nuclotron-based Ion Collider fAcility (NICA), Conceptual design report, Editors I.Meshkov, A.Sidorin, JINR, Dubna, 2008 		 
 
TUPPB004 Development of Stochastic Cooling Technique for NICA Project 313
 
  • N. Shurkhno
    MSU, Moscow, Russia
  • A.G. Kobets, I.N. Meshkov, V.V. Seleznev, A.O. Sidorin, G.V. Trubnikov
    JINR, Dubna, Moscow Region, Russia
  • R. Stassen
    FZJ, Jülich, Germany
  
  The experiment on stochastic cooling at Nuclotron, initiated two years ago as a test bench for NICA collider, is progressing. Stochastic cooling system was constructed in 2011. Important results of runs performed at Nuclotron (December 2011 and March 2012) are the following: beam Shottky-noise in the energy range 0.5-4 GeV/u has been measured for deutron and carbon beams with new pick-up structure and methodology for notch-filter and system delay adjustments (open-loop measurements) have been tested. Afterwards the initial scheme was revised and significantly improved and now is being prepared for the experiment. This report presents the results of first stochastic cooling tests at Nuclotron, and further development of stochastic cooling system.  
 
TUPPB007 Transfer Channel from Booster to Nuclotron at the NICA Facility 322
 
  • G.A. Filatov, I.N. Meshkov, V.A. Mikhaylov, A.O. Sidorin, N.D. Topilin, G.V. Trubnikov, A. Tuzikov
    JINR, Dubna, Moscow Region, Russia
  
  In the last years the Nuclotron-based Ion Collider fAcility (NICA) project is developed at Joint Institute for Nuclear Research (JINR), Dubna, Russia. Important elements of the NICA are two synchrotrons: Booster and Nuclotron. Connection between these synchrotrons is provided with the transfer channel for heavy ions at energy of 600 MeV/u. The transfer channel includes a stripping station and charge separation system. General goal of the optic design is to minimize emittance at the exit of the channel. Magnetic system of the channel will be constructed using magnets of the Nuclotron type.  
 
WEPPD024 The Quench Detection System for Superconducting Elements of Nuclotron Acceleration Complex 605
 
  • A.O. Sidorin, E.V. Ivanov, G.V. Trubnikov
    JINR, Dubna, Moscow Region, Russia
  
  The system provides highly effective detection of quenches in superconducting elements of Nuclotron. Full information about quench element is transmitted to control room. Diagram of analogue quench signal could be displayed on screen for further analysis. The system performs scheduled self-test diagnostics in real time and controls power elements of energy evacuation.  
 
MOBCH01 Storage, Acceleration and Short Bunched Beam Formation of 197Au+79 Ions in the NICA Collider 30
 
  • A.V. Eliseev, A.V. Smirnov
    JINR, Dubna, Moscow Region, Russia
  • T. Katayama
    GSI, Darmstadt, Germany
  • E. Kenzhbulatov, G.Y. Kurkin, V.M. Petrov, V. Volkov
    BINP SB RAS, Novosibirsk, Russia
  • O.S. Kozlov, A.O. Sidorin, G.V. Trubnikov
    JINR/VBLHEP, Dubna, Moscow region, Russia
  • I.N. Meshkov
    JINR/DLNP, Dubna, Moscow region, Russia
  
  The regimes of high intensity beam of 197Au79+ ions in NICA Collider is considered. The first stage – ion storage is proposed to be performed with Barrier Bucket technique at ion energy of 1–3 GeV/u. Experiments in collider mode in this energy range can be performed at injection energy. For experiments at higher, up to 4.5 GeV/u, energy ions are accelerated with the same BB method. Formation of bunched beam is fulfilled in two steps – first, at 24th harmonics and then, final formation, at 72th harmonics of RF system. The possibility of achievement of designed bunch parameters is shown.  
slides icon Slides MOBCH01 [0.807 MB]  
 
MOPPA016 Dynamics of 197Au78+ Ions Generated in Recombination with Cooling Electrons in the NICA Collider 275
 
  • A.V. Eliseev
    JINR, Dubna, Moscow Region, Russia
  • O.S. Kozlov, A.B. Kuznetsov, A.V. Philippov, A.O. Sidorin, A. Tuzikov
    JINR/VBLHEP, Dubna, Moscow region, Russia
  • I.N. Meshkov
    JINR/DLNP, Dubna, Moscow region, Russia
  
  Ions 197Au78+ are generated in recombination of original bare nuclei 197Au79+ with cooling electrons in the electron cooler of the NICA Collider. The ions 197Au78+ dynamics is considered in the in energy range 1–4.5 GeV/u when ion beam is bunched with RF voltage (collision mode operation of the NICA Collider). It is shown that some part of 197Au78+ ions can be involved in synchrotron motion when other part suffers a chaotic motion regime. Most of these ions live in vacuum chamber until further recombination in to the state of 197Au77+ and leave the Collider acceptance very fast. The evolution in time of ion distribution over the Collider aperture is presented.