Printed-circuit magnets for the University of Maryland Electron Ring (UMER) - new developments

Author

Li, H. ; Bernal, S. ; Kishek, R.A. ; Godlove, T. ; Shea, P. G O ; Reiser, M.

Author_Institution

Inst. for Res. in Electron. & Appl. Phys., Maryland Univ., College Park, MD, USA

Volume

3

fYear

2001

fDate

2001

Firstpage

1802

Abstract

The short printed-circuit quadrupoles for UMER produce fields with small gradients that meet our needs for the focusing and bending of a 10 keV, 100 mA electron beam over a circumference of 11.5 m. The field quality of the magnets has been established [see W.W. Zhang et al., Phys. Rev. ST Accel. Beams 3, 122401 (2000)], but correcting elements are needed to compensate for quadrupole rotation errors that lead to undesirable beam rotations in the injector line as well as in the main lattice. The correcting elements consist of printed-circuit quadrupoles; that are mounted over the main quadrupoles, with a relative angle of 45 degrees. In this way, a skew quadrupole component can be easily, independently and electronically adjusted to rotate the quadrupole field. Results are presented of field measurements of the modified quadrupoles, as well as preliminary observations in the UMER injector, and corresponding computer simulations

Keywords

accelerator magnets; electromagnets; electron accelerators; electron beam focusing; particle beam injection; particle beam stability; storage rings; 10 keV; 100 mA; 11.5 m; UMER; University of Maryland Electron Ring; beam rotations; bending; electron beam; focusing; injector line; magnetic field quality; main lattice; modified quadrupoles; printed-circuit magnets; quadrupole rotation; short printed-circuit quadrupoles; skew quadrupole component; Assembly; Coils; Current supplies; Electron beams; Magnetic field measurement; Magnets; Mechanical variables measurement; Personal communication networks; Physics; Rotation measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Particle Accelerator Conference, 2001. PAC 2001. Proceedings of the 2001

Conference_Location

Chicago, IL

Print_ISBN

0-7803-7191-7

Type

conf

DOI

10.1109/PAC.2001.987188

Filename

987188