Magnetic modeling vs measurements of the dipoles for the JLAB 10 kw Free Electron Laser Upgrade

Author

Biallas, G.H. ; Baggett, K. ; Douglas, D.R. ; Hiatt, T. ; Wines, R. ; Schultheiss, T.J. ; Christina, V.A. ; Rathke, J.W. ; Smirnov, Alexander ; Newsham, D. ; Luo, Y. ; Yu, D.

Author_Institution

Thomas Jefferson Nat. Accelerator Facility, Newport News, VA, USA

Volume

4

fYear

2003

fDate

12-16 May 2003

Firstpage

2186

Abstract

Magnetic measurements of the six families of dipoles for the infrared Free Electron Laser Upgrade at the Thomas Jefferson National Accelerator Facility (Jlab) are compared to the magnetic models on which their design is based. The magnets were designed in parallel by three organizations. They used ANSYS, Radia or Opera 3D as a 3D magnetic modeling program. Comparison of the discrepancies between model and magnet measurement is presented along with analysis of their potential causes. These dipoles operate in two field ranges. The injector/extractor dipoles operate around 0.05 T and the arc dipoles and optical Chicane dipoles operate between 0.22 to 0.71 T. All magnets are required to meet core field and field integral flatness to parts in 10⁴ over their "good field" region.

Keywords

accelerator magnets; beam handling techniques; free electron lasers; infrared sources; 3D magnetic modeling program; arc dipoles; extractor dipoles; field integral flatness; infrared Free Electron Laser Upgrade; injector dipole; magnetic measurements; optical chicane dipoles; Free electron lasers; Grid computing; Laser modes; Magnetic cores; Magnetic field measurement; Magnetic variables measurement; Magnets; Military computing; Optical resonators; Wine industry;

fLanguage

English

Publisher

ieee

Conference_Titel

Particle Accelerator Conference, 2003. PAC 2003. Proceedings of the

ISSN

1063-3928

Print_ISBN

0-7803-7738-9

Type

conf

DOI

10.1109/PAC.2003.1289060

Filename

1289060