PAC07 - List of Authors (Trakhtenberg, E.)

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Trakhtenberg, E.

Paper	Title	Page
TUPMN100	LCLS Undulator Production	1148
	E. Trakhtenberg, T. Barsz, P. K. Den Hartog, G. S. Lawrence, E. R. Moog, S. Sasaki, I. Vasserman, M. White ANL, Argonne, Illinois T. Becker, S. Dufresne, W. Kummerle, R. Schuermann Metalex Manufacturing, Cincinnati, Ohio G. Goldfarb, N. Lagonsky, S. Lagonsky, S. Sorsher Hi-Tech Manufacturing, Schiller Park, Illinois
	Funding: Work supported by the U. S. Dept. of Energy, under contract numbers DE-AC02-06CH11357 and DE AC03-76SF00515. Design and construction of the undulators for the Linac Coherent Light Source (LCLS) is the responsibility of Argonne National Laboratory. A prototype undulator* was constructed in-house and was extensively tested. The device was tunable to well within the LCLS requirements and was stable over a period of several years. Experience constructing the prototype undulator led us to conclude that with appropriate engineering design and detailed assembly procedures, precision undulators can be constructed by qualified vendors without previous undulator-construction experience. Our detailed technological knowledge and experience were transferred to the successful bidders who have produced outstanding undulators. Our production concept for the 40 3.4 m long, fixed-gap, planar-hybrid undulators with a 30 mm period is presented. Manufacturing, quality assurance, and acceptance testing details are also presented. *LCLS Prototype Undulator Report, Argonne National Laboratory Report ANL/APS/TB-48, January 2004, R. Dejus, Editor.
TUPMN101	A Study of the Minimum Wall Thickness for an Extruded Aluminum Vacuum Chamber	1151
	E. Trakhtenberg, G. E. Wiemerslage ANL, Argonne, Illinois
	Funding: Work at Argonne National Laboratory is supported by the U. S. Department of Energy, Office of Science, Office of Basic Energy Sciences under contract # DE-Ac02-06CH11357. Multiple vacuum chambers for the insertion devices with 1-mm wall thickness were developed at Argonne for the APS and many other synchrotron radiation facilities.* Using the extrusion for the insertion device vacuum chamber (ID VC) for the DESY FEL project with a 9.5-mm inner diameter, we decreased the wall thickness to 0.6, 0.5, and 0.4 mm to test the vacuum integrity for a thin wall in these extrusions. A special ultrasonic transducer with a 1/8" diameter was required to do the job. Also some additional short samples, machined exactly as the experimental piece, were used to verify wall thickness mechanically. Experimental setup and test results are presented. * Trakhtenberg E., Wiemerslage G., Den Hartog P. "New insertion device vacuum chambers at the Advanced Photon Source", PAC 2003 Particle Accelerator Physics Conference; Portland, OR.