CaltechAUTHORS
Published July 21, 2008 | Version public
Journal Article Metadata-only

Cavity BPM system tests for the ILC energy spectrometer

Creators

  • 1. ROR icon University of Cambridge
  • 2. ROR icon Royal Holloway University of London
  • 3. ROR icon University College London
  • 4. ROR icon University of Notre Dame
  • 5. ROR icon University of California, Berkeley
  • 6. ROR icon Lawrence Berkeley National Laboratory
  • 7. ROR icon Daresbury Laboratory
  • 8. ROR icon California Institute of Technology

Abstract

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.

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).

Additional details

Identifiers

Eprint ID
16351
DOI
10.1016/j.nima.2008.04.033
Resolver ID
CaltechAUTHORS:20091015-120353367

Related works

Describes
10.1016/j.nima.2008.04.033 (DOI)

Funding

Commission of the European Communities
RIDS-011899
Science and Technology Facilities Council (STFC)
Department of Energy (DOE)
DE-AC02-76SF00515
Department of Energy (DOE)
DE-FG02-03ER41279

Dates

Created
2009-10-19
Created from EPrint's datestamp field
Updated
2021-11-08
Created from EPrint's last_modified field