Simulation studies of emittance growth in RMS mismatched beams

Conference · Tue Jan 01 04:00:00 EST 1991

DOI:https://doi.org/10.1109/PAC.1991.164264· OSTI ID:5933734

Cucchetti, A; Wangler, T ^[1]; Reiser, M ^[2]

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1. Los Alamos National Lab., NM (USA)
2. Maryland Univ., College Park, MD (USA)

As shown in a separate paper, a charged-particle beam, whose rms size is not matched when injected into a transport channel or accelerator, has excess energy compared with that of a matched beam. If nonlinear space-charge forces are present and the mismatched beam transforms to a matched equilibrium state, rms-emittance growth will occur. The theory yields formulas for the possible rms-emittance growth, but not for the time it takes to achieve this growth. In this paper we present the results of systematic simulation studies for a mismatched 2-D round beam in an ideal transport channel with continuous linear focusing. Emittance growth rates obtained from the simulations for different amounts of mismatch and initial charge will be presented and the emittance growth will be compared with the theory. 6 refs., 7 figs.

• Research Organization: Los Alamos National Lab., NM (USA)
• Sponsoring Organization: DOE; USDOE, Washington, DC (USA)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 5933734
• Report Number(s): LA-UR-91-1396; CONF-910505--15; ON: DE91011414
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
430200* -- Particle Accelerators-- Beam Dynamics
Field Calculations
& Ion Optics
BEAM EMITTANCE
BEAM INJECTION
BEAM TRANSPORT
BEAMS
COMPUTERIZED SIMULATION
PARTICLE BEAMS
SIMULATION
SPACE CHARGE