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booster

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TUCHB02 Project of the Nuclotron-based Ion Collider fAcility (NICA) at JINR ion, collider, heavy-ion, proton 14
 
  • A. O. Sidorin, N. N. Agapov, V. Aleksandrov, A. V. Butenko, E. D. Donets, A. V. Eliseev, V. V. Fimushkin, A. Govorov, V. Karpinsky, V. D. Kekelidze, H. G. Khodzhibagiyan, V. Kobets, S. A. Kostromin, A. D. Kovalenko, O. S. Kozlov, A. Kuznetsov, I. N. Meshkov, V. A. Mikhailov, V. Monchinsky, V. Shevtsov, A. N. Sissakian, A. V. Smirnov, A. Sorin, G. V. Trubnikov, V. Volkov, V. Zhabitsky
    JINR, Dubna, Moscow Region
  • O. I. Brovko
    JINR/VBLHEP, Moscow
  • T. Katayama
    GSI, Darmstadt
  The Nuclotron-based Ion Collider fAcility (NICA) is the new accelerator complex being constructed at JINR aimed to provide collider experiments with heavy ions up to uranium at the center of mass energy from 4 to 11 GeV/u. It includes 6 Mev/u linac, 600 MeV/u booster, upgraded SC synchrotron Nuclotron and collider consisting of two SC rings, which provide average luminosity of the level of 1027cm-2s-1.  
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TUPSA004 Superconducting Magnets for the NICA Accelerator Complex in Dubna collider, dipole, quadrupole, synchrotron 41
 
  • E. V. Muravieva, H. G. Khodzhibagiyan, V. A. Mikhailov
    JINR, Dubna, Moscow Region
  The Nuclotron-based Ion Collider Facility (NICA) is the new accelerator complex being constructed at JINR aimed to provide collider experiments with heave ions and polarized deuterons. It includes new linac, Booster, upgraded superconducting (SC) synchrotron Nuclotron and Collider consisting of two storage rings. The NICA Booster dipole and quadrupole magnets are based on the Nuclotron type magnet with "cold" iron yoke and winding of hollow superconductor. This paper presents the basic characteristics, describes the design and status of manufacturing of the NICA Booster dipole and quadrupole full size model magnets.  
 
TUPSA014 Design of the Nuclotron Booster in the NICA Project ion, injection, electron, dipole 68
 
  • A. O. Sidorin, N. N. Agapov, A. V. Eliseev, V. Karpinsky, H. G. Khodzhibagiyan, A. D. Kovalenko, G. L. Kuznetsov, I. N. Meshkov, V. A. Mikhailov, V. Monchinsky, A. V. Smirnov, G. V. Trubnikov, B. Vasilishin
    JINR, Dubna, Moscow Region
  The main goal of the Nuclotron booster construction are following: accumulation up to 4*10+9 Au32+ ions; acceleration of the ions up to energy of 600 MeV/u that is sufficient for stripping of the ions to the bare nucleus state; simplification of the requirements to the vacuum conditions in the Nuclotron; forming of the required beam emittance at the energy of 100 MeV/u with electron cooling system. The features of this booster, the requirement to the main synchrotron systems and their parameters are presented.  
 
TUPSA019 Power Supply and Protection System of the Nuclotron Booster in the NICA Project power-supply, dipole, quadrupole, superconducting-magnet 83
 
  • A. V. Kudashkin
    JINR/VBLHEP, Moscow
  The Nuclotron Booster in NICA project is aimed to accelerate heavy ions up to 600 MeV/u to provide effective stripping before injection into the Nuclotron. The Booster power supply system consists of one powerful unit, providing maximum current of 12 kA and field ramp up to 1 T/s, and two additional units, that are used for the ring working point adjustment. The quench protection system is based on thyristor keys. Structure and parameters of the power sypply system is presented.  
 
TUPSA022 Simulation of Au32+ Beam Losses Due to Charge Exchange and Dynamic Vacuum in Nuclotron Booster ion, simulation, vacuum, beam-losses 89
 
  • A. O. Sidorin, A. Kuznetsov, V. A. Mikhaylov, G. V. Trubnikov
    JINR, Dubna, Moscow Region
  • A. V. Philippov
    JINR/VBLHEP, Dubna, Moscow region
  • P. Puppel, P. J. Spiller
    GSI, Darmstadt
  The StrahlSim code was used to simulate the beam loss and the dynamic vacuum for the proposed Nuclotron booster. The Nuclotron booster will accelerate Au32+ ions from 6.2 MeV/u to 600 MeV/u. The simulations have been carried out considering systematic injection (0% to 10%) and RF-capture losses (5% to 15%). Furthermore the influence of an ion catcher system on the beam loss has been investigated, in order to estimate, if such a system could stabilize the beam loss. Without an ion catcher system, zero systematic losses, and a static pressure of , the transmission was calculated to be 83%. The presence of an ion catcher system would stabilize the transmission at a considerably higher level than without such a system for all scenarios.  
 
WECHB02 Review of the Diamond Light Source Timing System gun, linac, photon, controls 144
 
  • Y. S. Chernousko, P. Hamadyk, M. T. Heron
    Diamond, Oxfordshire
  Funding: Diamond Light Source Ltd

The Diamond Light Source timing system utilises a central event generator with distributed event receivers at the equipment being controlled for all accelerator and beamline subsystems. This provides distributed fiducials with resolution of 8 nsec and stability of 8 psec. It is based on commercial hardware from Micro-Research, Finland. This paper describes the installed timing system and summarizes 5-year operational experience of the system. This includes the hardware and software, the distributing network, and the achieved precision and stability of the system. Developments in the timing system to support additional operational functionality of Diamond, including top-up operation, are also discussed.

 
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WEPSB028 Booster Electron Cooling System of NICA Project electron, ion, emittance, gun 230
 
  • A. V. Smirnov, E. V. Ahmanova, I. N. Meshkov, R. Pivin, A. Yu. Rudakov, V. I. Shokin, A. O. Sidorin, N. D. Topilin, Yu. A. Tumanova, S. Yakovenko
    JINR, Dubna, Moscow Region
  • A. V. Shabunov
    JINR/VBLHEP, Moscow
  Nuclotron-based Ion Collider fAcility (NICA) is the new accelerator complex being constructed on the JINR site. A few cooling systems are considered for the NICA project – electron one for the Booster-synchrotron and for Collider rings – both electron and stochastic ones. The main goal of the Booster electron cooler is a decrease of the longitudinal emittance from the injection value to the necessary value for acceleration to Nuclotron. The designed electron cooling system for Collider rings have to prevent the emittance growth due to the intrabeam scattering and to keep the average luminosity on the constant value. The peculiarity of electron cooling systems is the using of superconducting solenoids to provide the beam transportation in cooling sections.  
 
THPSC025 Low Level RF Control of ITEP-TWAC Facility controls, ion, synchrotron, proton 374
 
  • P. N. Alekseev, S. V. Barabin, A. D. Milyachenko, V. P. Zavodov
    ITEP, Moscow
  Digital LLRF control system was developed to improve the RF system mobility in multimode operation of the ITEP-TWAC booster and main synchrotrons. High precision mapping of the magnetic field derivative signal to the reference function of accelerating frequency f(B) allows to accelerate ions of any type in both rings up to relativistic energies even without feedback loops. The first modification of the LLRF control module is based on a fixed point DSP, which operates with the frequency lookup table to calculate the accelerating frequency. This module is now used in the booster synchrotron. Upgraded module has a floating point DSP, which allows calculation of the accelerating frequency "on the fly". This module is in operation in the main ring. Short description of the systems is given. Some results and experience obtained at operation with the number of types of particles, such as protons and ions of carbon, aluminum, iron and silver, are presented.