Space charge calculations of elliptical cross-section electron pulses in PARMELA

The Boeing version of the PARMELA code has been modified to compute the space charge effects for electron pulses with highly elliptical transverse cross-sections. A dynamic gridding routine has been added to allow good resolution for pulses as they evolve in time. The results from calculations for t...

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Bibliographic Details
Published in:Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment Accelerators, spectrometers, detectors and associated equipment, 1999, Vol.429 (1), p.281-286
Main Authors: Koltenbah, B.E.C., Parazzoli, C.G.
Format: Article
Language:English
Subjects:
FEL
Microbunch compression
Simulation
Space charge
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Summary:The Boeing version of the PARMELA code has been modified to compute the space charge effects for electron pulses with highly elliptical transverse cross-sections. A dynamic gridding routine has been added to allow good resolution for pulses as they evolve in time. The results from calculations for the chicane buncher in the 1 kW visible FEL beam line at Boeing indicate that the old circular algorithm of the SCHEFF subroutine overestimates the emittance growth in the bend plane by 30–40%.
ISSN:0168-9002
1872-9576
DOI:10.1016/S0168-9002(99)00126-6