NDLI: Controlling transverse multibunch instabilities in linacs of high-energy linear colliders.

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Controlling transverse multibunch instabilities in linacs of high-energy linear colliders.

Content Provider	Semantic Scholar
Author	Ruth, Peter
Copyright Year	1990
Abstract	In this paper, we study multibunch beam breakup, with emphasis on theoretical methods applicable to the design of a linear collider with center-of-mass energy near 1 TeV. One way to significantly improve the luminosity and energy transfer efficiency of such a collider is to accelerate a train of bunches rather than just a single bunch each time the linac accelerating structure is filled with a pulse of RF energy. For the required bunch charges and intensities, the transverse instability due to the wake fields produced in the accelerating structure is very severe unless measures are taken to control it. Therefore, we examine the effects of several methods of reducing this instability: (1) use of damped a.cceleration cavities, (2) placing th e b unches near nodes of the transverse wake fields produced by preceding bunches, (3) introducing a spread (over different cells of the accelerating structure) of the individual mode frequencies in the transverse wake field, and (4) varying the strength of the transverse focusing from bunch to bunch, in such a way as to partially cancel the effects of the wake fields from preceding bunches. We present examples illustrating the effectiveness of these cures, using realistic linear collider design parameters.
Starting Page	964
Ending Page	977
Page Count	14
File Format	PDF HTM / HTML
Alternate Webpage(s)	http://www.slac.stanford.edu/pubs/slacpubs/4750/slac-pub-4801.pdf
PubMed reference number	10012422v1
Volume Number	41
Issue Number	3
Journal	Physical review. D, Particles and fields
Language	English
Access Restriction	Open
Subject Keyword	Borg Category-Ratio 10 Perceived Exertion Score 7 Energy Transfer Fill Radiotherapy Systems, Linear Accelerator
Content Type	Text
Resource Type	Article

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