Measurement and simulation of whole beam brightness on the ETA-II (Experimental Test Accelerator-II) linear induction accelerator

Conference · Tue Aug 07 04:00:00 EDT 1990

OSTI ID:6542489

Chen, Y J; CLark, J C; Paul, A C; Nexsen, W E; Turner, W C

Measurement of beam radius as a function of focusing strength of an upstream solenoidal field allows simultaneous determination of the beam energy, brightness and tilt of the phase space ellipse. On ETA-II beam radius has been measured by analyzing foil emitted Cherenkov light with a gated (5 ns) image intensified CCD camera. The beam energy measurement is corroborated with a spectrometer magnet and core brightness with a two hole emittance diagnostic. For a 6 MeV, 1.6 kA beam, the whole beam brightness was measured to be 4.0 {times} 10{sup 8} A/(m-rad){sup 2} with an inner core (few percent) brightness of 1.2 {times} 10{sup 9} A/(m-rad){sup 2}. The data was simulated with a particle transport code that includes the effects of energy sweep and magnetic misalignment. The code predicts a halo produced by an orbital resonance that is also observed experimentally.

• Research Organization: Lawrence Livermore National Lab., CA (USA)
• Sponsoring Organization: DOD; DOE/DP
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 6542489
• Report Number(s): UCRL-JC-103786; CONF-9009123--31; ON: DE91000652
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
430200* -- Particle Accelerators-- Beam Dynamics
Field Calculations
& Ion Optics
ACCELERATORS
BEAM EMITTANCE
BEAM LUMINOSITY
BEAM PROFILES
CHARGE-COUPLED DEVICES
COMPUTERIZED SIMULATION
FREE ELECTRON LASERS
LASERS
LINEAR ACCELERATORS
MATHEMATICAL SPACE
MEASURING METHODS
PHASE SPACE
SEMICONDUCTOR DEVICES
SIMULATION
SPACE