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Cavity BPM system tests for the ILC energy spectrometer

Slater, M. and Adolphsen, C. and Arnold, R. and Boogert, S. and Boorman, G. and Gournaris, F. and Hildreth, M. and Hlaing, C. and Jackson, F. and Khainovski, O. and Kolomensky, Yu. G. and Lyapin, A. and Maiheu, B. and McCormick, D. and Miller, D. J. and Orimoto, T. J. and Szalata, Z. and Thomson, M. and Ward, D. and Wing, M. and Woods, M. (2008) Cavity BPM system tests for the ILC energy spectrometer. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 592 (3). pp. 201-217. ISSN 0168-9002. doi:10.1016/j.nima.2008.04.033.

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The main physics programme of the International Linear Collider (ILC) requires a measurement of the beam energy at the interaction point with an accuracy of 10-4 or better. To achieve this goal a magnetic spectrometer using high resolution beam position monitors (BPMs) has been proposed. This paper reports on the cavity BPM system that was deployed to test this proposal. We demonstrate sub-micron resolution and micron level stability over 20 h for a long BPM triplet. We find micron-level stability over 1 h for 3 BPM stations distributed over a long baseline. The understanding of the behaviour and response of the BPMs gained from this work has allowed full spectrometer tests to be carried out.

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Additional Information:© 2008 Elsevier B.V. Received 23 December 2007; revised 7 April 2008; accepted 16 April 2008; available online 7 May 2008. We wish to thank the SLAC accelerator and End Station A operations and support staff. Our work has been supported by the U.S. Department of Energy under contract numbers DE-AC02-76SF00515 (SLAC) and DE-FG02- 03ER41279 (UC Berkeley), by the EC under FP6 “Research Infrastructure Action - Structuring the European Research Area” EuroTev DS Project under contract number RIDS-011899 and by the Science and Technology Facilities Council (STFC).
Funding AgencyGrant Number
Commission of the European CommunitiesRIDS-011899
Science and Technology Facilities Council (STFC)UNSPECIFIED
Department of Energy (DOE)DE-AC02-76SF00515
Department of Energy (DOE)DE-FG02-03ER41279
Subject Keywords:Cavity beam position monitor; BPM; End station A; ESA; International linear collider; ILC; Energy spectrometer; Beam orbit stability
Issue or Number:3
Record Number:CaltechAUTHORS:20091015-120353367
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:16351
Deposited By: Jason Perez
Deposited On:19 Oct 2009 17:08
Last Modified:08 Nov 2021 23:26

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