Los Alamos beam halo experiment: comparing theory, simulation and experiment.
- Ji
We compare macroparticle simulations with measurements from a proton beam-halo experiment in a 52-quadrupole periodic-focusing channel. Three different initial distributions with the same Courant-Snyder parameters and emittances, but different shapes, predict different beam profiles in the transport system. Input distributions with greater population in the tails produce larger rates of emittance growth, a result that is qualitatively consistent with the particle-core model of halo formation in mismatched beams. The simulations underestimate the growth rate of halo and emittance for mismatched beams. Better agreement between simulations and experiment may require an input distribution that represents more accurately the tails of the real input beam.
- Research Organization:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 976284
- Report Number(s):
- LA-UR-02-5086; TRN: US1006865
- Resource Relation:
- Conference: Submitted to: Advanced Accelerator Concepts Workshop, Oxnard, CA, June 23-28, 2002
- Country of Publication:
- United States
- Language:
- English
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