dipole

Paper	Title	Other Keywords	Page
TUCOA01	Helical Cooling Channel Developments	emittance, simulation, collider, electron	67
	R. P. Johnson, C. Y. Yoshikawa Muons, Inc, Batavia Y. S. Derbenev, V. S. Morozov JLAB, Newport News, Virginia
	Helical Cooling Channels, based on the same helical dipole Siberian Snake magnets used for spin control in synchrotrons and storage rings, are now proposed for almost all stages of muon beam cooling that are required for high luminosity muon colliders. We review the status of the theory, simulations, and technology development for the capture, phase rotation, 6-D ionization cooling, parametric-resonance ionization cooling, and reverse emittance exchange sections of one of the candidate scenarios for a high-luminosity. high-energy muon collider.
	Slides
TUPS03	Closed Orbit Correction in 2 MeV Electron Cooler Section at COSY-Juelich	electron, ion, injection, closed-orbit	92
	L. J. Mao, J. Dietrich, V. Kamerdzhiev, B. Lorentz, H.-J. Stein FZJ, Jülich
	A 2 MeV magnetized electron cooling system will be installed in COSY to boost the luminosity for future high density internal target experiments. For an effective electron cooling, the proton beam and electron beam have to overlap coaxially, it lead to the necessity of a good orbit correction in cooler section. Since the toroid magnets, the proton beam orbit distortion is anti-symmetric in horizontal plane. With steerers at each side of cooler, the proton beam can be made coaxial in the cooler and the deflection can be compensated. The distortion caused by bending coils in toroid is symmetric in vertical plane. A four-bump method is suggested for correction. Using the magnetic field data measured in BINP, we calculated the orbit distortion of proton beam at injection energy, and investigated the scheme of closed orbit correction. The simulation of orbit distortion and result of the correction are presented in this paper.
TUPS10	Magnetic System of Electron Cooler for COSY	electron, simulation, power-supply, pick-up	114
	V. M. Panasyuk, M. I. Bryzgunov, A. V. Bubley, V. K. Gosteev, V. V. Parkhomchuk, V. B. Reva BINP SB RAS, Novosibirsk
	Cooler magnetic system for COSY is described. Electron beam energy range is wide (24 keV- 2 MeV), typical bending radiuses of electrons are near 1 m, typical magnetic fields are 0.5 – 2 kG. Under such conditions transport channels with longitudinal magnet field for motion of electrons from high voltage terminal of cascade transformer into cooling section and their return for recuperation are discussed. Results of Hall device measurements are compared with suitable computations. Also some steps were taken for improve of the magnetic field line straightness in the cooling section.