PAC07 - List of Authors (Smith, J. C.)

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Smith, J. C.

Paper	Title	Page
WEOAAB01	Spin Transport in the International Linear Collider	1955
	J. C. Smith CLASSE, Ithaca
	Funding: Work supported by the U. S. National Science Foundation and the U. S. Department of Energy. Polarized positron and electron beams are ideal for searching for new physics at the International Linear Collider (ILC). In order to properly orient and preserve the polarization of both beams at the Interaction Point (IP) the beam polarization must be manipulated by a series of spin rotators along the beam line. Furthermore, the polarization for both beams should be known with a relative uncertainty of about 0.5% or better, therefore, all sources of depolarization along the ILC should be identified. We report on a spin rotator design for the ILC and polarization studies between Damping Ring extraction and the Interaction Point.
	Slides
THPMS013	Comparison of Tracking Codes for the International Linear Collider	3020
	J. C. Smith CLASSE, Ithaca P. Eliasson Uppsala University, Uppsala K. Kubo KEK, Ibaraki A. Latina, D. Schulte CERN, Geneva P. Lebrun, K. Ranjan Fermilab, Batavia, Illinois F. Poirier, N. J. Walker DESY, Hamburg P. Tenenbaum SLAC, Menlo Park, California
	Funding: Supported by the US Department of Energy, the US National Science Foundation and the Commission of the European Communities under the 6th Framework Programme "Structuring the European Research Area". In an effort to compare beam dynamics and create a ‘‘benchmark'' for Dispersion Free Steering (DFS) a comparison was made between different International Linear Collider (ILC) simulation programs while performing DFS. This study consisted of three parts. First, a simple betatron oscillation was tracked through each code. Secondly, a set of component misalignments and corrector settings generated from one program was read into the other to confirm similar emittance dilution. Thirdly, given the same set of component misalignments DFS was performed independently in each program and the resulting emittance dilution was compared. Performance was found to agree exceptionally well in all three studies.
THPMS056	Emittance Preservation in the International Linear Collider Ring to Main Linac Transfer Line	3118
	P. Tenenbaum SLAC, Menlo Park, California K. Kubo KEK, Ibaraki A. Latina CERN, Geneva J. C. Smith CLASSE, Ithaca
	Funding: Work supported by the US Department of Energy, contract DE-AC02-76SF00515. The very small vertical beam emittance in the International Linear Collider (ILC) can be degraded by dispersion, xy coupling, transverse wakefields, and time-varying transverse fields introduced by elements with misalignments, strength errors, xy rotation errors, or yz rotation errors in the Ring to Main Linac (RTML) transfer line. We present a plan for emittance preservation in this beamline which uses local, quasi-local, and global correction schemes. Results of simulations of the emittance preservation algorithm are also presented and discussed.