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Trapping and dark current in plasma-based accelerators

Conference ·
OSTI ID:860773
The trapping of thermal electrons in a nonlinear plasma wave of arbitrary phase velocity is investigated. The threshold plasma wave amplitude for trapping plasma electrons is calculated, thereby determining the fraction trapped and the expected dark current in a plasma-based accelerator. It is shown that the presence of a laser field (e.g., trapping in the self-modulated regime of the laser wakefield accelerator) increases the trapping threshold. Implications for experimental and numerical laser-plasma studies are discussed.
Research Organization:
Ernest Orlando Lawrence Berkeley NationalLaboratory, Berkeley, CA (US)
Sponsoring Organization:
USDOE Director. Office of Science. Office of High EnergyPhysics
DOE Contract Number:
AC02-05CH11231
OSTI ID:
860773
Report Number(s):
LBNL--56571; BnR: KA1501020
Country of Publication:
United States
Language:
English

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