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Persistent URL	http://purl.org/net/epubs/work/32500052
Record Status	Checked
Record Id	32500052
Title	Simulation study of a passive plasma beam dump using varying plasma density
Contributors	K Hanahoe (Cockcroft Inst., and Manchester Univ.), G Xia (Cockcroft Inst., and Manchester Univ.), M Islam (Cockcroft Inst., and Manchester Univ.), Y Li (Cockcroft Inst., and Manchester Univ.), Ö Mete-Apsimon (Cockcroft Inst., and Lancaster Univ.), B Hidding (Cockcroft Inst., and Strathclyde Univ.), J Smith
Abstract	A plasma beam dump uses the collective oscillations of plasma electrons to absorb the kinetic energy of a particle beam. In this paper, a modified passive plasma beam dump scheme is proposed using either a gradient or stepped plasma profile to maintain a higher decelerating gradient compared with a uniform plasma. The improvement is a result of the plasma wavelength change preventing the re-acceleration of low energy particles. Particle-in-cell simulation results show that both stepped and gradient plasma profiles can achieve improved energy loss compared with a uniform plasma for an electron bunch of parameters routinely achieved in laser wakefield acceleration.
Organisation	CI
Keywords
Funding Information	STFC; Cockcroft Institute
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Language	English (EN)

Type	Details	URI(s)	Local file(s)	Year
Journal Article	Phys Plasmas 24, no. 2 (2017): 023120.	doi:10.1063/1.4977449		2017