Research and Development Toward a 4.5-1.5 {Angstrom} Linac Coherent Light Source (LCLS) at SLAC

Conference · Tue Aug 01 04:00:00 EDT 1995

OSTI ID:628014

Tatchyn, R; Arthur, J; Baltay, M ^[1]

---

1. and others

In recent years significant studies have been initiated on the feasibility of utilizing a portion of the 3km S-band accelerator at SLAC to drive a short wavelength (4.5-1.5 A) 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 {lt}0.05%, and (3) a transverse emittance, {epsilon}[r-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 approx. 20 A, 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 A 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.

• Research Organization: Stanford Linear Accelerator Center, Menlo Park, CA (United States)
• Sponsoring Organization: USDOE Office of Energy Research, Washington, DC (United States)
• DOE Contract Number: AC03-76SF00515
• OSTI ID: 628014
• Report Number(s): SLAC-PUB--95-6994; CONF-9508156--; ON: DE97009078
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
COMPUTERIZED SIMULATION
ELECTRON BEAMS
FREE ELECTRON LASERS
PHOTOCATHODES
TESTING
USES
WIGGLER MAGNETS
X RADIATION