Spectral quality of ALS U5.0 undulator and field error effects

Author

Wang, C. ; Marks, S. ; Kincaid, B.

Author_Institution

Lawrence Berkeley Lab., CA, USA

fYear

1993

fDate

17-20 May 1993

Firstpage

1578

Abstract

The first insertion device of the Advanced Light Source (ALS), a U5.0 undulator, has been carefully adjusted and qualified with a specially designed magnetic measurement system. The magnetic field of the undulator has been fully mapped at a series of gaps with very high accuracy. Based upon these measured field data, we evaluate the radiation spectral quality of this device in terms of an ideal sinusoidal device and examine the field error effects. Moreover, the statistical correlation between the field errors and radiation degradation is examined by using the large quantity of magnetic field data sets accumulated in the process of adjusting and qualifying the U5.0 undulator

Keywords

beam handling equipment; electron accelerators; magnetic field measurement; storage rings; wigglers; ALS U5.0 undulator; Advanced Light Source; field error effects; first insertion device; magnetic field; magnetic measurement system; radiation spectral quality; spectral quality; Brightness; Computer errors; Degradation; Laboratories; Light sources; Magnetic analysis; Magnetic field measurement; Magnetic variables measurement; Storage rings; Undulators;

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.1993.309076

Filename

309076