Photoelectric injector design considerations

Conference · Fri Jan 01 04:00:00 EST 1988

OSTI ID:6521822

Carlsten, B E; Sheffield, R L

We will present an analysis for different emittance growth mechanisms for electron beams in photoelectric injectors. The mechanisms will be broken up into three groups: space-charge forces due to self-similar expansion, space-charge forces due to non-self-similar expansion (including divergences and convergences of the beam), and rf forces. We will show that some of the emittance can be eliminated downstream, particularly that of the first group. General design considerations will become clear from this analysis and a generic design will be presented. In addition, a photoelectric injector design for both the Los Alamos National Laboratory XUV FEL and a compact free-electron laser (FEL) will be used to show a numerical agreement with the analysis. 5 refs., 2 figs.

• Research Organization: Los Alamos National Lab., NM (USA)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 6521822
• Report Number(s): LA-UR-88-3327; CONF-881049-53; ON: DE89005444
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
430200 -- Particle Accelerators-- Beam Dynamics
Field Calculations
& Ion Optics
430302* -- Particle Accelerators-- Injection & Extraction Systems
ACCELERATORS
BEAM EMITTANCE
BEAM INJECTION
BEAMS
DESIGN
ELECTRON BEAMS
ELECTRON EMISSION
EMISSION
FOCUSING
LEPTON BEAMS
LINEAR ACCELERATORS
NONLINEAR PROBLEMS
PARTICLE BEAMS
PHOTOELECTRIC EMISSION
RF SYSTEMS
SPACE CHARGE