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Femtosecond X-Ray Generation Through 90° Thomson Scattering: Status of the LBL Experiment

Description: Scattering of femotosecond laser pulses off a low energy relativistic electron beam at 90{sup o} offers the possibility to generate ultrashort X-ray pulses. Experiments are under preparation in the Beam Test Facility of the Center for Beam Physics at LBL to demonstrate the generation and detection of such pulses. The experiments involve a relativistic electron beam (tunable from 25-50 MeV) with a bunch length of 10 ps containing 1-2 nC, and an ultra short pulse (50-200 fs), high peak power (&gt… more
Date: November 1, 1994
Creator: Leemans, W.; Schoenlein, R.; Chin, A.; Glover, E.; Conde, M.; Chattopadhyay, S. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Time-dependent multi-dimensional simulation studies of the electron output scheme for high power FELs

Description: The authors examine the performance of the so-called electron output scheme recently proposed by the Novosibirsk group. In this scheme, the key role of the FEL oscillator is to induce bunching, while an external undulator, called the radiator, then outcouples the bunched electron beam to optical energy via coherent emission. The level of the intracavity power in the oscillator is kept low by employing a transverse optical klystron (TOK) configuration, thus avoiding excessive thermal loading on … more
Date: December 1, 1994
Creator: Hahn, S. J.; Fawley, W. M.; Kim, K. J. & Edighoffer, J. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Status of the LBL experiment on femtosecond x-ray generation through 90{degree} Thomson scattering

Description: A status report on the generation of femtosecond X-ray pulses through 90{degrees} Thompson scattering is presented. The experiment involves a relativistic electron beam (tunable from 25--50 MeV) with a bunch length of 10 ps containing 1 {minus}2 nC, and a ultrashort pulse (50--200 fs), high power (4 TW) 0.8 {mu}m Ti:Al{sub 2}O{sub 3} laser system. Both beams are focussed down to about a 50 {mu}m waist size and intersect at 90{degrees}. The laser field acts as an electromagnetic undulator for th… more
Date: June 1, 1994
Creator: Leemans, W.; Chattopadhyay, S.; Conde, M.; Glover, E.; Kim, K. J.; Schoenlein, R. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Crab crossing in a gamma-gamma collider

Description: The crabbing of an incident photon beam from a laser, and the electron beam with which it interacts at the conversion point, is shown to have the same efficiency as in head-on Compton scattering, but with the advantages of a crossing geometry. The resulting {gamma}-ray beam is also crabbed, which allows for a crossing collision point, while maintaining the luminosity at the same value it would have in a head-on collision.
Date: August 1, 1994
Creator: Xie, M.; Kim, K. J. & Sessler, A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

UV x-ray free electron lasers through high-gain single pass amplifier: Basic principles and issues

Description: The author reviews the basic principles of high gain free electron laser amplifier in single pass configuration for generation of intense, tunable radiation for wavelength shorter than 1,000 {angstrom}. Two schemes are discussed: for wavelength region between 1,000--100 {angstrom}, the high gain harmonic generation of a coherent input radiation can be used. For x-ray wavelength as short as a few {angstrom}, the self-amplified spontaneous emission is currently the only known free electron laser … more
Date: September 1, 1994
Creator: Kim, K. J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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