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Resistive Wall Wakefield in the LCLS Undulator Beam Pipe.

DE2004833045

Publication Date	2004
Personal Author	Bane, K. L. F.; Stupakov, G.
Page Count	22
Abstract	We have shown that, due to the ac resistive wall wakefield, the present LCLS undulator design, with its round copper beam pipe, will result in an unacceptably large energy variation induced within the bunch over the length of the undulator (0.6%). If, instead, we use a flat, aluminum chamber, the energy variation can be reduced to within acceptable limits (less-than-or-similar-to 0.2%). Finally we have shown that the effect of the anomalous skin effect in the beam pipe wall is small, and can be ignored.
Keywords	Wiggler magnets Copper Design Skin effect Wakefields
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	Stanford Linear Accelerator Center, CA.; Department of Energy, Washington, DC.
Supplemental Notes	Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200514

Resistive Wall Wakefield in the LCLS Undulator Beam Pipe.

Resistive Wall Wakefield in the LCLS Undulator Beam Pipe.
DE2004833045

Publication Date	2004
Personal Author	Bane, K. L. F.; Stupakov, G.
Page Count	22
Abstract	We have shown that, due to the ac resistive wall wakefield, the present LCLS undulator design, with its round copper beam pipe, will result in an unacceptably large energy variation induced within the bunch over the length of the undulator (0.6%). If, instead, we use a flat, aluminum chamber, the energy variation can be reduced to within acceptable limits (less-than-or-similar-to 0.2%). Finally we have shown that the effect of the anomalous skin effect in the beam pipe wall is small, and can be ignored.
Keywords	Wiggler magnets Copper Design Skin effect Wakefields
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	Stanford Linear Accelerator Center, CA.; Department of Energy, Washington, DC.
Supplemental Notes	Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200514