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Title: Beam-based alignment technique for the SLC (Stanford Linear Collider) linac

Abstract

Misalignment of quadrupole magnets and beam position monitors (BPMs) in the linac of the SLAC Linear Collider (SLC) cause the electron and positron beams to be steered off-center in the disk-loaded waveguide accelerator structures. Off-center beams produce wakefields which limit the SLC performance at high beam intensities by causing emittance growth. Here, we present a general method for simultaneously determining quadrupole magnet and BPM offsets using beam trajectory measurements. Results from the application of the method to the SLC linac are described. The alignment precision achieved is approximately 100 ..mu..m, which is significantly better than that obtained using optical surveying techniques. 2 refs., 4 figs.

Authors:
; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Stanford Linear Accelerator Center, Menlo Park, CA (USA)
OSTI Identifier:
6251003
Report Number(s):
SLAC-PUB-4902; LBL-27057; CONF-890335-160
ON: DE89012279
DOE Contract Number:  
AC03-76SF00515
Resource Type:
Conference
Resource Relation:
Conference: 13. particle accelerator conference, Chicago, IL, USA, 20 Mar 1989; Other Information: Portions of this document are illegible in microfiche products
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; BEAM BENDING MAGNETS; ALIGNMENT; BEAM MONITORS; BEAM OPTICS; BEAM POSITION; ORBITS; STANFORD LINEAR COLLIDER; TRAJECTORIES; WAVEGUIDES; ACCELERATOR FACILITIES; ACCELERATORS; ELECTRICAL EQUIPMENT; ELECTROMAGNETS; EQUIPMENT; LINEAR ACCELERATORS; MAGNETS; MEASURING INSTRUMENTS; MONITORS; 430303* - Particle Accelerators- Experimental Facilities & Equipment

Citation Formats

Adolphsen, C E, Lavine, T L, Atwood, W B, Himel, T M, Lee, M J, Mattison, T S, Pitthan, R, Seeman, J T, Williams, S H, and Trilling, G H. Beam-based alignment technique for the SLC (Stanford Linear Collider) linac. United States: N. p., 1989. Web.
Adolphsen, C E, Lavine, T L, Atwood, W B, Himel, T M, Lee, M J, Mattison, T S, Pitthan, R, Seeman, J T, Williams, S H, & Trilling, G H. Beam-based alignment technique for the SLC (Stanford Linear Collider) linac. United States.
Adolphsen, C E, Lavine, T L, Atwood, W B, Himel, T M, Lee, M J, Mattison, T S, Pitthan, R, Seeman, J T, Williams, S H, and Trilling, G H. 1989. "Beam-based alignment technique for the SLC (Stanford Linear Collider) linac". United States. https://www.osti.gov/servlets/purl/6251003.
@article{osti_6251003,
title = {Beam-based alignment technique for the SLC (Stanford Linear Collider) linac},
author = {Adolphsen, C E and Lavine, T L and Atwood, W B and Himel, T M and Lee, M J and Mattison, T S and Pitthan, R and Seeman, J T and Williams, S H and Trilling, G H},
abstractNote = {Misalignment of quadrupole magnets and beam position monitors (BPMs) in the linac of the SLAC Linear Collider (SLC) cause the electron and positron beams to be steered off-center in the disk-loaded waveguide accelerator structures. Off-center beams produce wakefields which limit the SLC performance at high beam intensities by causing emittance growth. Here, we present a general method for simultaneously determining quadrupole magnet and BPM offsets using beam trajectory measurements. Results from the application of the method to the SLC linac are described. The alignment precision achieved is approximately 100 ..mu..m, which is significantly better than that obtained using optical surveying techniques. 2 refs., 4 figs.},
doi = {},
url = {https://www.osti.gov/biblio/6251003}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Mar 01 00:00:00 EST 1989},
month = {Wed Mar 01 00:00:00 EST 1989}
}

Conference:
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