skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Beam based alignment at the KEK accelerator test facility

Abstract

The KEK Accelerator Test Facility (ATF) damping ring is a prototype low emittance source for the NLC/JLC linear collider. To achieve the goal normalized vertical emittance {gamma}{var_epsilon}{sub {gamma}} = 20 nm-rad, magnet placement accuracy better than 30 mm must be achieved. Accurate beam-based alignment (BBA) is required. The ATF arc optics uses a FOBO cell with two horizontally focusing quadrupoles, two sextupoles and a horizontally defocusing gradient dipole, all of which must be aligned with BBA. BBA at ATF uses the quadrupole and sextupole trim windings to find the trajectory through the center of each magnet. The results can be interpreted to assess the accuracy of the mechanical alignment and the beam position monitor offsets.

Authors:
; ; ;
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Director, Office of Science (US)
OSTI Identifier:
797861
Report Number(s):
LBNL-50661; CBP Note - 434
R&D Project: 455101; B& R KA0403011; TRN: US0202046
DOE Contract Number:  
AC03-76SF00098
Resource Type:
Conference
Resource Relation:
Conference: European Particle Accelerator Conference 2002 (EPAC02), Paris (FR), 06/03/2002--06/07/2002; Other Information: PBD: 14 Jun 2002
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; ACCELERATORS; ACCURACY; ALIGNMENT; BEAM POSITION; DAMPING; FOCUSING; LINEAR COLLIDERS; MAGNETS; MONITORS; OPTICS; QUADRUPOLES

Citation Formats

Ross, M., Nelson, J., Woodley, M., and Wolski, A. Beam based alignment at the KEK accelerator test facility. United States: N. p., 2002. Web.
Ross, M., Nelson, J., Woodley, M., & Wolski, A. Beam based alignment at the KEK accelerator test facility. United States.
Ross, M., Nelson, J., Woodley, M., and Wolski, A. Fri . "Beam based alignment at the KEK accelerator test facility". United States. https://www.osti.gov/servlets/purl/797861.
@article{osti_797861,
title = {Beam based alignment at the KEK accelerator test facility},
author = {Ross, M. and Nelson, J. and Woodley, M. and Wolski, A.},
abstractNote = {The KEK Accelerator Test Facility (ATF) damping ring is a prototype low emittance source for the NLC/JLC linear collider. To achieve the goal normalized vertical emittance {gamma}{var_epsilon}{sub {gamma}} = 20 nm-rad, magnet placement accuracy better than 30 mm must be achieved. Accurate beam-based alignment (BBA) is required. The ATF arc optics uses a FOBO cell with two horizontally focusing quadrupoles, two sextupoles and a horizontally defocusing gradient dipole, all of which must be aligned with BBA. BBA at ATF uses the quadrupole and sextupole trim windings to find the trajectory through the center of each magnet. The results can be interpreted to assess the accuracy of the mechanical alignment and the beam position monitor offsets.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2002},
month = {6}
}

Conference:
Other availability
Please see Document Availability for additional information on obtaining the full-text document. Library patrons may search WorldCat to identify libraries that hold this conference proceeding.

Save / Share: