Study for evaluation of undulator magnetic field using vibrating wire method

Yuu Tankaka, Shigeru Kashiwagi, Ken ichi Nanbu, Masayuki Kawai, Fujio Hinode, Toshiya Muto, Xiangkun Li, Hiroyuki Hama

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We have constructed a planer undulator that is Halbach type composed of permanent magnet blocks. The period length of the undulator and the number of periods are 100 mm and 25, respectively. The vibrating wire method is studied to measure the periodic magnetic field of the undulator. A thin copper-beryllium wire is placed on the beam axis in the undulator. An AC current flow is applied in the wire, then by measuring amplitudes and phases of standing waves excited on the wire, we can reconstruct the magnetic field distribution along the wire numerically. In this paper, we discuss relations between reproducibility of the undulator field and the mode harmonics number incorporated into the reconstruction of undulator field.

Original languageEnglish
Title of host publicationFEL 2011 - 33rd International Free Electron Laser Conference
Pages413-416
Number of pages4
Publication statusPublished - 2011
Event33rd International Free Electron Laser Conference, FEL 2011 - Shanghai, China
Duration: 2011 Aug 222011 Aug 26

Publication series

NameFEL 2011 - 33rd International Free Electron Laser Conference

Other

Other33rd International Free Electron Laser Conference, FEL 2011
Country/TerritoryChina
CityShanghai
Period11/8/2211/8/26

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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