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| TUPS02 |
Booster Electron Cooling System of NICA Project
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- A. Yu. Rudakov, E. V. Ahmanova, I. N. Meshkov, R. Pivin, V. I. Shokin, A. O. Sidorin, A. V. Smirnov, N. D. Topilin, Yu. A. Tumanova, S. Yakovenko
JINR, Dubna, Moscow Region
- A. V. Ivanov
BINP SB RAS, Novosibirsk
- A. V. Shabunov
JINR/VBLHEP, Moscow
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Nuclotron-based Ion Collider fAcility (NICA) is the new accelerator complex being constructed at the JINR. It includes the injection complex, existing superconducting proton synchrotron "Nuclotron", and the new superconducting proton synchrotrons – the Booster and the Collider. We plan to use in the NICA several cooling systems: electron cooling for the Booster and for the Collider, and stochastic cooling for the Collider. The Booster electron cooling system is designed for the electron energy range of 1.5 – 60 keV and maximum current of 1.0 A. The elements of electron cooling system (electron gun, collector, power supply system) will be tested at the test-bench "Recuperator" at the JINR. In the report the design and the basic parameters of the Booster electron cooling system are presented.
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| TUPS20 |
Demonstration of Longitudinal Stacking in the ESR with Barrier Buckets and Stochastic Cooling
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- M. Steck, C. Dimopoulou, B. Franzke, O. E. Gorda, T. Katayama, F. Nolden, G. Schreiber
GSI, Darmstadt
- I. N. Meshkov, A. O. Sidorin, G. V. Trubnikov
JINR, Dubna, Moscow Region
- D. Möhl
CERN, Geneva
- R. Stassen, H. Stockhorst
FZJ, Jülich
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Fast longitudinal beam accumulation has been demonstrated in the ESR at GSI with an Ar18+ beam coming from the synchrotron SIS18 at 400 MeV/u. Continuous application of stochastic cooling in all three phase space directions, merges the stack with the new injected bunch. Longitudinal beam compression was achieved by using either short barrier bucket rf pulses or by successive injections onto the unstable fixed point of the rf bucket at h=1. This recent experiment in the ESR provides the proof of principle for the planned longitudinal stacking of pre-cooled antiprotons in the HESR, injected from the CR.
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