TY - GEN
T1 - Study for evaluation of undulator magnetic field using vibrating wire method
AU - Tankaka, Yuu
AU - Kashiwagi, Shigeru
AU - Nanbu, Ken ichi
AU - Kawai, Masayuki
AU - Hinode, Fujio
AU - Muto, Toshiya
AU - Li, Xiangkun
AU - Hama, Hiroyuki
PY - 2011
Y1 - 2011
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=84884605639&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84884605639&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:84884605639
SN - 9783954501175
T3 - FEL 2011 - 33rd International Free Electron Laser Conference
SP - 413
EP - 416
BT - FEL 2011 - 33rd International Free Electron Laser Conference
T2 - 33rd International Free Electron Laser Conference, FEL 2011
Y2 - 22 August 2011 through 26 August 2011
ER -