Corrugated Pipe as a Beam Dechirper

Bane, K.L.F. ; Stupakov, G. ; /SLAC

关键词: ACCELERATORS;    AMPLITUDES;    APERTURES;    ELECTRONS;    OSCILLATIONS ACCPHY;   

DOI  :  10.2172/1038704
RP-ID  :  SLAC-PUB-14925
PID  :  OSTI ID: 1038704
Others  :  TRN: US1202109

学科分类：核物理和高能物理

美国|英语

来源: SciTech Connect

【 摘 要 】

We have studied the use of a metallic pipe with small corrugations for the purpose of passively dechirping, through its wakefield, a short, intense electron bunch. The corrugated pipe is attractive for this purpose because its wake: (i) has near maximal possible amplitude for a given aperture and (ii) has a relatively large oscillation wave length, even when the aperture is small. We showed how the corrugated structure can satisfy dechirping requirements encountered in the NGLS project at LBNL. We found that a linear chirp of -40 MeV/mm can be induced by an NGLS-like beam, by having it pass through a corrugated, metallic pipe of radius 3 mm, length 8.2 m, and corrugation parameters full depth 450 {mu}m and period 1000 {mu}m. This structure is about 15 times as effective in the role of dechirper as an S-band accelerator structure used passively.