Actions for Adjustable Permanent Quadrupoles Using Rotating Magnet Material Rods for the Next Linear Collider [electronic resource].

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Adjustable Permanent Quadrupoles Using Rotating Magnet Material Rods for the Next Linear Collider [electronic resource].

Published
Washington, D.C. : United States. Dept. of Energy. Office of Energy Research, 2002.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description
vp : digital, PDF file
Additional Creators
Stanford Linear Accelerator Center, United States. Department of Energy. Office of Energy Research, and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
The proposed Next Linear Collider (NLC) will require over 1400 adjustable quadrupoles between the main linacs' accelerator structures. These 12.7 mm bore quadrupoles will have a range of integrated strength from 0.6 to 132 Tesla, with a maximum gradient of 135 Tesla per meter, an adjustment range of +0 -20% and effective lengths from 324 mm to 972 mm. The magnetic center must remain stable to within 1 micrometer during the 20% adjustment. In an effort to reduce estimated costs and increase reliability, several designs using hybrid permanent magnets have been developed. All magnets have iron poles and use either Samarium Cobalt or Neodymium Iron to provide the magnetic fields. Two prototypes use rotating rods containing permanent magnetic material to vary the gradient. Gradient changes of 20% and center shifts of less than 20 microns have been measured. These data are compared to an equivalent electromagnet prototype. See High Reliability Prototype Quadrupole for the Next Linear Collider by C.E Rago, C.M SPENCER, Z. Wolf submitted to this conference.
Report Numbers
E 1.99:slac-pub-8991
slac-pub-8991
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Note
Published through SciTech Connect.
08/23/2002.
"slac-pub-8991"
Spencer, Cherrill M.
Type of Report and Period Covered Note
Topical;
Funding Information
AC03-76SF00515
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