DocumentCode
3205249
Title
Field Quality and Magnetic Center Stability Achieved in a Variable Permanent Magnet Quadrupole for the Ilc
Author
Iwashita, Y. ; Mihara, T. ; Kumada, Masayuki ; Spencer, Cherrill M.
Author_Institution
Kyoto ICR, Uji, Kyoto
fYear
2005
fDate
16-20 May 2005
Firstpage
1913
Lastpage
1915
Abstract
A superstrong permanent magnet quadrupole (PMQ) is one of the candidates for the final focus lens for the International Linear Collider (ILC). Our prototype PMQ can produce variable strengths from 3.5T to 24.2T in 1.4T steps. The magnetic center of the PMQ must not move more than a few microns during a 20% strength change to enable a Beam-Based Alignment (BBA) process to work. Our PMQ can be mechanically adjusted to suppress the center movement from more than 30μm to less than 10μm during strength changes.
Keywords
Gears; Lenses; Magnetic materials; Magnetic variables measurement; Permanent magnets; Prototypes; Stability; Superconducting magnets; Switches; Testing;
fLanguage
English
Publisher
ieee
Conference_Titel
Particle Accelerator Conference, 2005. PAC 2005. Proceedings of the
Print_ISBN
0-7803-8859-3
Type
conf
DOI
10.1109/PAC.2005.1590955
Filename
1590955
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