Skorobogatov, D. N.

Paper	Title	Page
MOIO05	Status of the 2 MeV Electron Cooler for COSY/HESR	15
	J. Dietrich, V. Kamerdzhiev FZJ, Jülich M. I. Bryzgunov, A. D. Goncharov, V. M. Panasyuk, V. V. Parkhomchuk, V. B. Reva, D. N. Skorobogatov BINP SB RAS, Novosibirsk
	The 2 MeV electron cooling system for COSY-Juelich was proposed to further boost the luminosity even in presence of strong heating effects of high-density internal targets. The project is funded since mid 2009. The design and construction of the cooler is accomplished in cooperation with the Budker Institute of Nuclear Physics in Novosibirsk, Russia. The 2 MeV cooler is also well suited in the start up phase of the High Energy Storage Ring (HESR) at FAIR in Darmstadt. It can be used for beam cooling at injection energy and is intended to test new features of the high energy electron cooler for HESR. The infrastructure necessary for the operation of the cooler in the COSY ring (radiation shielding, cabling, water cooling etc.) is established. The electron beam commissioning at BINP Novosibirsk is scheduled to start at May of 2011. First results are reported. Final commissioning at COSY-Juelich is planned for the end of 2011.
	Slides
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
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.