Title :
Characterizing proton beam of 6.7 MeV LEDA RFQ by fitting wire-scanner profiles to 3D nonlinear simulations
Author :
Lysenko, W.P. ; Gilpatrick, J.D. ; Qiang, J. ; Rybarcyk, L.J. ; Ryne, R.D. ; Schneider, J.D. ; Smith, H.V. ; Young, L.M. ; Schultze, M.E.
Author_Institution :
Los Alamos Nat. Lab., NM, USA
Abstract :
Quadrupole scans were used to characterize the transverse beam of the LEDA RFQ. The original scan data, obtained when the HEBT was installed immediately downstream of the RFQ, were reanalyzed by fitting to the 3-D nonlinear simulation code IMPACT. All the data in the measured profiles at the wire scanner were used, not just the rms widths. The measured and simulated profiles still have differences in their shapes that have not been explained. An improved model is required to get better fits and may result in more accurate emittance measurements
Keywords :
accelerator RF systems; accelerator magnets; electromagnets; high energy physics instrumentation computing; linear accelerators; particle beam diagnostics; particle beam dynamics; particle beam extraction; proton accelerators; proton beams; 3D nonlinear simulations; 6.7 MeV; HEBT; IMPACT code; LEDA RFQ; accurate emittance measurements; beam shape; linear accelerators; original scan data; proton beam characteristics; radiofrequency quadrupoles; transverse beam profiles; wire-scanner profiles; Atomic beams; Data analysis; Ear; Linear particle accelerator; Linearity; Particle beam measurements; Particle beams; Predictive models; Shape measurement; Wire;
Conference_Titel :
Particle Accelerator Conference, 2001. PAC 2001. Proceedings of the 2001
Conference_Location :
Chicago, IL
Print_ISBN :
0-7803-7191-7
DOI :
10.1109/PAC.2001.988001
