Insertion device magnet measurements for the Advanced Light Source

Author

Marks, S. ; Cork, C. ; Hoyer, E. ; Humphries, D. ; Kincaid, B. ; Plate, D. ; Robb, A. ; Schlueter, R. ; Wang, C. ; Hassenzahl, W.

Author_Institution

Lawrence Berkeley Lab., CA, USA

fYear

1993

fDate

17-20 May 1993

Firstpage

1575

Abstract

Allowable magnetic field errors for the 4.6 m long insertion devices for the Advanced Light Source (ALS) are extremely small and are driven by electron beam and radiation requirements. Detailed measurements and adjustments of each insertion device are performed to qualify them for installation in the ALS. To accomplish this, a high speed, precision magnetic measurement facility has been designed and built. Hall probe mapping equipment, capable of completing a 2500 sample, 6 m scan with precision axial position monitoring using a laser interferometer in under one minute, is used to obtain both local and integrated field information. A 5.5 m long, 1 cm wide coil is used to measure the field integral through an entire insertion device. This paper describes magnetic measurement equipment, and results of measurements on IDA, the first of the ALS insertion devices

Keywords

beam handling equipment; electron accelerators; storage rings; 1 cm; 4.6 m; 5.5 m; 6 m; ALS; Advanced Light Source; Hall probe mapping equipment; electron beam; insertion device magnet measurements; integrated field information; laser interferometer; local field information; magnetic field errors; precision axial position monitoring; radiation requirements; Brightness; Electron beams; Engine cylinders; Hall effect devices; Laboratories; Light sources; Magnetic devices; Magnetic field measurement; Magnetic separation; Monitoring;

fLanguage

English

Publisher

ieee

Conference_Titel

Particle Accelerator Conference, 1993., Proceedings of the 1993

Conference_Location

Washington, DC

Print_ISBN

0-7803-1203-1

Type

conf

DOI

10.1109/PAC.1993.309075

Filename

309075