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Quadrupole Centering and Beam Steering in the Next Linear Collider Main Linacs

Technical Report ·
DOI:https://doi.org/10.2172/764979· OSTI ID:764979

Accurate measurement of quadrupole-to-BPM center offsets and use of this information in an auto-steering algorithm are two essential components of emittance preservation in the Next Linear Collider main linac. The authors present the results of an analytic/simulation study of possible statistical and systematic limitations on the measurement of quad-BPM center offsets. These results are incorporated in a simulation study of a potential main linac steering algorithm which relies entirely on remote-controlled magnet and RF-structure positioning devices to minimize emittance dilution. The effects of ground motion during the alignment process are also considered.

Research Organization:
Stanford Linear Accelerator Center, Menlo Park, CA (US)
Sponsoring Organization:
USDOE Office of Energy Research (ER) (US)
DOE Contract Number:
AC03-76SF00515
OSTI ID:
764979
Report Number(s):
SLAC-PUB-8561
Country of Publication:
United States
Language:
English