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Title: Multipole Spill-Down Effects in the SPEAR3 Dipole Magnets

Abstract

The main SPEAR3 dipole magnets are 1.45 m long with a pole contour designed to horizontally deflect and vertically focus the electron beam. At the nominal beam energy (3 GeV), the field and gradient along the magnet centerline are 1.3 T and 3.3 T/m (k = {minus}0.33 m{sup {minus}2}), respectively. Due to the straight core construction, the beam passes through each dipole with up to 16.6 mm trajectory offset relative to the centerline. This paper describes a method used to characterize the spilldown effect from magnetic multipole fields as observed by the beam traversing the dipole magnets. Results of tracking studies utilizing the longitudinal variation of multipole fields are discussed.

Authors:
Publication Date:
Research Org.:
Stanford Linear Accelerator Center, Menlo Park, CA (US)
Sponsoring Org.:
USDOE Office of Energy Research (ER) (US)
OSTI Identifier:
10522
Report Number(s):
SLAC-PUB-8234
TRN: US0103582
DOE Contract Number:  
AC03-76SF00515
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: 19 Aug 1999
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; SPEAR; DESIGN; DIPOLES; ELECTRON BEAMS; MAGNETS; MULTIPOLES; BEAM TRANSPORT

Citation Formats

Corbett, William. Multipole Spill-Down Effects in the SPEAR3 Dipole Magnets. United States: N. p., 1999. Web. doi:10.2172/10522.
Corbett, William. Multipole Spill-Down Effects in the SPEAR3 Dipole Magnets. United States. doi:10.2172/10522.
Corbett, William. Thu . "Multipole Spill-Down Effects in the SPEAR3 Dipole Magnets". United States. doi:10.2172/10522. https://www.osti.gov/servlets/purl/10522.
@article{osti_10522,
title = {Multipole Spill-Down Effects in the SPEAR3 Dipole Magnets},
author = {Corbett, William},
abstractNote = {The main SPEAR3 dipole magnets are 1.45 m long with a pole contour designed to horizontally deflect and vertically focus the electron beam. At the nominal beam energy (3 GeV), the field and gradient along the magnet centerline are 1.3 T and 3.3 T/m (k = {minus}0.33 m{sup {minus}2}), respectively. Due to the straight core construction, the beam passes through each dipole with up to 16.6 mm trajectory offset relative to the centerline. This paper describes a method used to characterize the spilldown effect from magnetic multipole fields as observed by the beam traversing the dipole magnets. Results of tracking studies utilizing the longitudinal variation of multipole fields are discussed.},
doi = {10.2172/10522},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1999},
month = {8}
}

Technical Report:

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