Author/Authors :
Schmerge، نويسنده , , J.F. and Bolton، نويسنده , , P.R. and Clendenin، نويسنده , , J.E. and Decker، نويسنده , , F.-J. and Dowell، نويسنده , , D.H. and Gierman، نويسنده , , S.M. and Limborg، نويسنده , , C.G. and Murphy، نويسنده , , B.F.، نويسنده ,
Abstract :
Proposed fourth-generation light sources using SASE FELs to generate short pulse, coherent, X-rays require demonstration of high brightness electron sources. The gun test facility at SLAC was built to test high brightness sources for the proposed linac coherent light source at SLAC. The transverse-emittance measurements are made at nearly 30 MeV by measuring the spot size on a YAG screen using the quadrupole scan technique. The emittance was measured to vary from 1 to 3.5 mm mrad as the charge is increased from 50 to 350 pC using a laser pulse width of 2 ps FWHM. The measurements are in good agreement with simulation results using the LANL version of PARMELA.
