NDLI: Beam Position Monitoring Using the Hom-Signals from a Damped and Detuned Accelerating Structure

Content Provider	IEEE Xplore Digital Library
Author	Dobert, S. Adolphsen, C. Jones, R. Lewandowski, J. Li, Z. Pivi, M. Wang, J. Higo, T.
Copyright Year	2005
Description	Author affiliation: SLAC, Menlo Park, CA 94025, U.S.A. (Dobert, S.)
Abstract	The Next and Global Linear Collider (NLC/GLC) designs require precision alignment of the beam in the accelerator structures to reduce short range wakefields. The moderately damped and detuned structures themselves provide suitable higher order mode (HOM) signals to measure this alignment. The modes in the lowest dipole band, whose frequencies range from 14-16 GHz, provide the strongest signals. To determine the position resolution they provide, an NLC/GLC prototype structure that was installed in the ASSET facility of the SLAC Linac was instrumented to downmix and digitize these signals. The beam position within the structure was determined by simultaneously measuring the signals at three frequencies (14.3, 15, 15.7 GHz) corresponding to modes localized at the beginning, the middle and the end of the 60 cm long structure. A resolution of 1 micron was achieved even with 28 dB signal attenuation, which is better than the 5 micron resolution required for the NLC/GLC.
Starting Page	2804
Ending Page	2806
File Size	1764956
Page Count	3
File Format	PDF
ISBN	0780388593
DOI	10.1109/PAC.2005.1591275
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-05-16
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Particle beams Monitoring Acceleration Signal resolution Colliding beam accelerators Frequency Colliding beam devices Linear accelerators Prototypes Linear particle accelerator
Content Type	Text
Resource Type	Article

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Beam Position Monitoring using the HOM-Signals from a Damped and Detuned Accelerating Structure

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