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M. Baltay

First Name: M.

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Last Name: Baltay

Full Name: M. Baltay

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1 paper
title: Research and development toward a 4.5-1.5 angstrom linac coherent light source (LCLS) at SLAC
format: conference proceeding
conference: FEL 1995 17th
year: 1996
32 authors: R. Tatchyn | J. Arthur | M. Baltay | K. Bane | R. Boyce | M. Cornacchia | T. Cremer | A. Fisher | S. J. Hahn | M. Hernandez | G. Loew | R. Miller | W. R. Nelson | H. D. Nuhn | D. Palmer | J. Paterson | T. Raubenheimer | J. Weaver | H. Wiedemann | H. Winick | C. Pellegrini | G. Travish | E. T. Scharlemann | S. Caspi | W. Fawley | K. Halbach | K. J. Kim | R. Schlueter | M. Xie | D. Meyerhofer | R. Bonifacio | L. De Salvo
abstract: In recent years significant studies have been initiated on the feasibility of utilizing a portion of the 3 km S-band accelerator at SLAC to drive a short wavelength (4.5-1.5 Angstrom) Linac Coherent Light Source (LCLS), a Free-Electron Laser (FEL) operating in the Self-Amplified Spontaneous Emission (SASE) regime. Electron beam requirements for single-pass saturation in a minimal time include: 1) a peak current in the 7 kA range, 2) a relative energy spread of <0.05%, add 3) a transverse emittance, epsilon [rad-m], approximating the diffraction-limit condition epsilon=lambda/4 pi, where lambda[m] is the output wavelength. Requirements on the insertion device include field error levels of 0.02% for keeping the electron bunch centered on and in phase with the amplified photons, and a focusing beta of 8 m/rad for inhibiting the dilution of its transverse density. Although much progress has been made in developing individual components and beam-processing techniques necessary for LCLS operation down to similar to 20 Angstrom, a substantial amount of research and development is still required in a number of theoretical and experimental areas leading to the construction and operation of a 4.5-1.5 Angstrom LCLS. In this paper we report on a research and development program underway and in planning at SLAC for addressing critical questions in these areas. These include the construction and operation of a linac test stand for developing laser-driven photocathode rf guns with normalized emittances approaching 1 mm-mrad; development of advanced beam compression, stability, and emittance control techniques at multi-GeV energies; the construction and operation of a FEL Amplifier Test Experiment (FATE) for theoretical and experimental studies of SASE at IR wavelengths; an undulator development program to investigate superconducting, hybrid/permanent magnet (hybrid/PM), and pulsed-Cu technologies; theoretical and computational studies of high-gain FEL physics and LCLS component designs; development of X-ray optics and instrumentation for extracting, modulating, and delivering photons to experimental users; and the study and development of scientific experiments made possible by the source properties of the LCLS.

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