Valishev, A.

Paper	Title	Page
TUOCKI03	Observations and Modeling of Beam-Beam Effects at the Tevatron Collider	725
	A. Valishev Y. Alexahin, V. A. Lebedev, R. S. Moore, V. D. Shiltsev Fermilab, Batavia, Illinois
	This report summarizes recent experience with beam-beam effects at the Tevatron collider. Improvements in the beam life time resulting from implementation of the new helical orbit are analyzed. Effects of second order chromaticity correction and beam-beam compensation with Electron Lenses are studied.
	Slides
THPMN109	Status of the ILC Main Linac Lattice Design	2966
	A. Valishev N. Solyak Fermilab, Batavia, Illinois M. Woodley SLAC, Menlo Park, California
	The report describes the present design of the ILC Main Linac lattice. The topics covered include basic element layout, optical functions, and issues centered around the linac following of the Earth's curvature. Also discussed are beam parameter measurements and instrumentation requirements.
FRPMS015	Correction of Second Order Chromaticity at Tevatron	3922
	A. Valishev G. Annala, V. A. Lebedev, R. S. Moore Fermilab, Batavia, Illinois
	Correction of the second order betatron tune chromaticity is essential for operation at the working point near half integer resonance which is proposed as one of the ways to improve performance of the Tevatron. In this report the new chromaticity correction scheme with split sextupole families is described. Details of implementation and commissioning at the present working point are discussed.
TUODC02	Development of 3D Beam-Beam Simulation for the Tevatron	905
	E. G. Stern J. F. Amundson, P. Spentzouris, A. Valishev Fermilab, Batavia, Illinois J. Qiang, R. D. Ryne LBNL, Berkeley, California
	We present status of development of a 3D Beam-Beam simulation code. The essential features of the code are 3D particle-in-cell Poisson solver, multi-bunch beam transport and interaction, chromaticity and machine impedance. The simulations match synchro-betatron oscillations measured at the VEPP-2M collider. The impedance model is compared to analytic expressions for instability growth.
	Slides
TUPAS024	Experimental and Simulation Studies of Beam-Beam Compensation with Tevatron Electron Lenses	1703
	V. Kamerdzhiev Y. Alexahin, V. D. Shiltsev, A. Valishev, X. Zhang Fermilab, Batavia, Illinois D. N. Shatilov BINP SB RAS, Novosibirsk
	Initially the Tevatron Electron Lenses (TELs) were intended for compensation of the beam-beam effect on the antiproton beam. Owing to recent increase in the number of antiprotons and reduction in their emittance, it is the proton beam now that suffers most from the beam-beam effect. We present results of beam studies, compare them with the results of computer simulations using LIFETRAC code and discuss possibilities of further improvements of the Beam-Beam Compensation efficiency in the Tevatron.