Smirnov, A. V.

Paper	Title	Page
MOIO06	Recent Status of Beam Cooling at S-LSR	19
	A. Noda, M. Nakao, H. Souda, H. Tongu Kyoto ICR, Uji, Kyoto T. Fujimoto, S. I. Iwata, S. Shibuya AEC, Chiba M. Grieser MPI-K, Heidelberg I. N. Meshkov, A. V. Smirnov, E. Syresin JINR, Dubna, Moscow Region K. Noda, T. Shirai NIRS, Chiba-shi H. Okamoto HU/AdSM, Higashi-Hiroshima
	At S-LSR in ICR, Kyoto University, approaches to multi-dimensional laser cooling of Mg ions with the use of synchro-betatron coupling has been applied in addition to the realization of one dimensional ordering of 7 MeV proton beam with application of an electron beam cooling. In the present paper, recent results of transverse cooling of bunched beam will be presented together with an aproach to provide a short bunch 7 MeV proton beam with a high peak current to make bio-medical irradiation of biological cells.
	Slides
WECOA01	Ion Kinetics in the Ultra-low Energy Electrostatic Storage Ring (USR)	89
	A. I. Papash MPI-K, Heidelberg A. V. Smirnov JINR, Dubna, Moscow Region C. P. Welsch The University of Liverpool, Liverpool
	The Ultra-low energy Storage Ring (USR) at the Facility for Low-energy Antiproton and Ion Research (FLAIR) will provide cooled beams of antiprotons in the energy range between 300 keV down to 20 keV and possibly less. A large variety of the envisaged experiments including in-ring collision experiments with a reaction microscope require a comprehensive study of the long term beam dynamics processes in the ring. Detailed investigations into the ion kinetics under consideration of the effects from electron cooling and multiple scattering of the beam on a supersonic gas jet target have been carried out using the BETACOOL code. The life time, equilibrium momentum spread and equilibrium lateral spread during collisions with this internal gas jet target were estimated. The results from simulations were benchmarked against experimental data of beam losses in the ELISA storage ring. In addition, the results from experiments at the TSR ring where a 93 keV/u beam CF+ ions has been shrunk to extremely small dimensions have been reproduced. Based on these simulations, conditions for stable ring operation with extremely low emittance beam are presented. Finally, results from studies into the interaction of ions with a gas jet target at very low energies are summarized.
	Slides
TUPS02	Booster Electron Cooling System of NICA Project
	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
	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.
TUPS11	Superconducting Shield for Solenoid of Electron Cooling System	118
	A. V. Smirnov, N. N. Agapov, D. E. Donets, V. M. Drobin, S. Kulikov, R. Pivin, G. V. Trubnikov JINR, Dubna, Moscow Region G. L. Dorofeev RRC, Moscow
	The homogeneity of the magnetic field in the straight solenoid of the electron cooling system is the very important task. The superconducting solenoids are planned for electron cooling systems of collider rings of NICA project. To reach the necessary homogeneity in the straight section the superconducting shield was proposed. The experimental and numerical investigations of the field homogeneity with the superconducting shield are presented.
TUPS13	Electron Cooler for NICA Collider	125
	S. Yakovenko, E. V. Ahmanova, A. G. Kobets, I. N. Meshkov, R. Pivin, A. Yu. Rudakov, A. V. Smirnov, N. D. Topilin, Yu. A. Tumanova JINR, Dubna, Moscow Region A. A. Filippov Allrussian Electrotechnical Institute, Moskow A. V. Shabunov JINR/VBLHEP, Moscow
	The electron cooling system at electron energy up to 2.5 MeV for the NICA collider is under design at JINR. The electron cooler is developed according to the available world practice of similar systems manufacturing. The main peculiarity of the electron cooler for the NICA collider is using of two cooling electron beams (one electron beam per each ring of the collider) that never has been done before. The acceleration and deceleration of the electron beams is produced by common high-voltage generator. The conceptual design of the electron cooling system has been developed. The cooler consist of three tanks. Two of them contain acceleration/deceleration tubes and are immersed in superconducting solenoids. The third one contains HV generator, which design is based on voltage multiplying scheme