• Open Access

Stability considerations of permanent magnet quadrupoles for CESR phase-III upgrade

W. Lou, D. Hartill, D. Rice, D. Rubin, and J. Welch
Phys. Rev. ST Accel. Beams 1, 022401 – Published 26 June 1998
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Abstract

The Cornell electron storage ring (CESR) phase-III upgrade plan includes very strong permanent magnet quadrupoles in front of the cryostat for the superconducting quadrupoles and physically as close as possible to the interaction point. Together with the superconducting quadrupoles, they provide tighter vertical focusing at the interaction point. The quadrupoles are built with neodymium iron boron (NdFeB) material and operate inside the 15 kG solenoid field. Requirements on the field quality and stability of these quadrupoles are discussed and test results are presented.

  • Received 5 March 1998

DOI:https://doi.org/10.1103/PhysRevSTAB.1.022401

This article is available under the terms of the Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.

Authors & Affiliations

W. Lou, D. Hartill, D. Rice, D. Rubin, and J. Welch

  • Laboratory of Nuclear Studies, Cornell University, Ithaca, New York 14853

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Vol. 1, Iss. 2 —

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