Cooled Beam Dynamics
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TUP01
 Beam Tracking Studies of Electron Cooling in ELENA  
 
  • J. Resta-López, J.R. Hunt, B. Veglia, C.P. Welsch
    Cockcroft Institute, Warrington, Cheshire, United Kingdom
  
  The Extra Low ENergy Antiproton storage ring (ELENA), which is a new small synchrotron currently being commissioned at CERN, will further decelerate antiprotons from the Antiproton Decelerator (AD) from 5.3 MeV to energies as low as 100 keV and provide high quality beams for antimatter experiments. At such unprecedented low energy, it is important to evaluate the long term beam stability. To provide a consistent explanation of the different physical effects acting on the beam, multi-particle and multi-turn tracking simulations have been performed in the ELENA ring, including electron cooling and different scattering effects under realistic assumptions. The effect of several imperfections in the electron cooling process is also analysed. The aim is to make a comparison with measurements, thus obtaining a full characterisation of the beam evolution in ELENA.  
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TUP02
 Emittance Measurement of Cooled Beams  
 
  • J. Resta-López, J.R. Hunt, B. Veglia, C.P. Welsch
    Cockcroft Institute, Warrington, Cheshire, United Kingdom
  
  Precise emittance measurements are essential to guarantee optimum beam control and performance in all kind of accelerator machines. Amongst them, ultra-low energy antiproton and ion facilities, where beam cooling is essential, are not an exception. In these machines, the emittance reconstruction techniques have to face several challenges, e.g. asymmetric beams, long beam profile tails, diffusion and space charge effects. In addition, likely in a strongly cooled beam there will appear a high correlation between momentum offset and transverse emittance. In this contribution, we investigate effective reconstruction algorithms based in scraping techniques in presence of the above effects. Simulation results are presented for the case of the Extra Low ENergy Antiproton storage ring (ELENA), which is currently being commissioned at CERN.  
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THM21 NICA Project: Three Stages and Three Coolers 84
 
  • I.N. Meshkov, G.V. Trubnikov
    JINR, Dubna, Moscow Region, Russia
  
  The Nuclotron-based Ion Collider fAcility (NICA) project is under development at JINR. The first and general goal of the project is experimental study of both hot and dense baryonic matter to search for so-called Mixed Phase formation in collisions of heavy relativistic ions. The second goal is spin physics (in collisions of polarized protons and deuterons). The project NICA is developed in three stages. 1st stage, "The Baryonic Matter at Nuclotron", is a fixed target experiment with ions accelerated in the linac and two SC synchrotrons - the Booster and the Nuclotron up to kinetic energy of 4.5 GeV/u (the Centre mass system energy ECMS up to 3.45 GeV/u). The Booster has an electron cooler of the electron energy up to 50 keV. The 2nd stage extends the ECMS from 4 to 11 GeV/u in colliding beams' mode. The Collider will be equipped with both stochastic cooling system and double electron one of electron energy of 0.5 - 2.5 MeV, which are being designed and manufactured at the Budker INP. Stage III - Polarized Beams Mode of The Collider is at the level of the conceptual design. We emphasize on beam dynamics in the NICA machines and a necessity of the cooling methods application.  
slides icon Slides THM21 [8.370 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-COOL2017-THM21  
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