Ivanov, A. V.

Paper	Title	Page
THIOA02	The First Commission Results of the High Voltage Magnetized Cooler for COSY	37
	V. B. Reva, N. Alinovsky, A. M. Batrakov, T. V. Bedareva, E. A. Bekhtenev, O. V. Belikov, V. N. Bocharov, V. V. Borodich, M. I. Bryzgunov, A. V. Bubley, V. A. Chekavinskiy, V. G. Cheskidov, B. A. Dovzhenko, A. Erokhin, G. A. Fatkin, M. G. Fedotov, A. D. Goncharov, K. Gorchakov, V. K. Gosteev, I. A. Gusev, A. V. Ivanov, G. V. Karpov, Y. I. Koisin, M. N. Kondaurov, A. Kryuchkov, A. D. Lisitsyn, I. A. Lopatkin, V. R. Mamkin, A. S. Medvedko, V. M. Panasyuk, V. V. Parkhomchuk, I. V. Poletaev, V. A. Polukhin, A. Yu. Protopopov, D. N. Pureskin, A. A. Putmakov, E. P. Semenov, D. V. Senkov, D. N. Skorobogatov, N. P. Zapiatkin BINP SB RAS, Novosibirsk
	The electron cooler of a 2 MeV for COSY storage ring FZJ is assembling in BINP. The cooler is designed on the classic scheme of low energy coolers like cooler CSRm, CSRe, LEIR that was produced in BINP before. The electron beam is transported inside the longitudinal magnetic field along whole trajectory from an electron gun to a collector. This optic scheme is stimulated by the wide range of the working energies 0.1(0.025)- 2 MeV. The electrostatic accelerator consists of 34 individual unify section. Each section contains two HV power supply (plus/minus 30 kV) and power supply of the magnetic coils. The electrical power to each section is provided by the cascade transformer. The cascade transformer is the set of the transformer connected in series with isolating winding. This paper describes the status of the electron cooling assembling.
	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.
TUPS06	Electron Gun with Variable Beam Profile for COSY Cooler	99
	A. V. Bubley, M. I. Bryzgunov, A. V. Ivanov, A. M. Kruchkov, V. V. Parkhomchuk, V. B. Reva BINP SB RAS, Novosibirsk
	Electron gun with variable beam profile is used on COSY 2 MeV cooler to optimize the cooling process. Further development of the gun is achieved with the help of the four-sector control electrode that provides some new features. Combined with BPMs it gives the possibility of the electron beam shape estimation. Application of the gun for stochastic cooling is also discussed in the article.
TUPS07	Electron Collector for 2 MeV Electron Cooler for COSY	103
	M. I. Bryzgunov, A. V. Bubley, V. A. Chekavinskiy, I. A. Gusev, A. V. Ivanov, M. N. Kondaurov, V. M. Panasyuk, V. V. Parkhomchuk, D. N. Pureskin, A. A. Putmakov, V. B. Reva, D. V. Senkov, D. N. Skorobogatov BINP SB RAS, Novosibirsk
	New electron collector for 2 MeV electron cooler for COSY ring is presented. In electron coolers efficiency of collector is important for high voltage power supply. In 2 MeV cooler for COSY it is also important from the point of view of radiation safety because secondary electrons, reflected from the collector go back to accelerating tube. Besides radiation effect it can cause problems with vacuum and electric strength. The collector presented in the article is supplemented with Wien filter which allows increase efficiency of the system by deflection secondary electron flux in crossed transverse electric and magnetic fields. Results of calculation and experimental results achieved on special test bench are presented.