The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
TY - CONF
AU - Zhao, Z.
AU - Du, B.
AU - Jia, Q.K.
AU - Karabekyan, S.
AU - Pflüger, J.
AU - Yakopov, M.
ED - Schaa, Volker RW
ED - Petit-Jean-Genaz, Christine
ED - Ko, In Soo
ED - Kim, Dong Eon
ED - Kim, Kyung Sook
TI - First Field Integral Measurement Campaign for Air Coil
J2 - Proc. of IPAC2016, Busan, Korea, May 8-13, 2016
C1 - Busan, Korea
T2 - International Particle Accelerator Conference
T3 - 7
LA - english
AB - For the operation of the air coils, which are needed for the undulator segments of the European x-ray free-electron laser (E-XFEL), precise conversion constants are needed to properly convert excitation current to steering strength. This paper describes the measurement of all 200 air coils, needed for this purpose using the short moving wire (MW) system. A LabView program was developed to measure the distribution of first field integral of both vertical (B_{y}) and horizontal (B_{z}) magnetic field components in the median plane of an air coil automatically. The program is an adaptation of the existing program, which was used to characterize magnetic properties of the phase shifters (PS). Before doing the measurements the new program automatically finds the centers of B_{y} and B_{z} components, which are found to match with the geometrical centers with sufficient accuracy. After the measuring procedure is complete, the results are presented as graphics output and final tables. It shows that the measurement results can fully meet the design requirements of E-XFEL. For all measurements the excitation current of the coils was set to 1 Ampere.
PB - JACoW
CP - Geneva, Switzerland
SP - 2991
EP - 2993
KW - undulator
KW - controls
KW - power-supply
KW - operation
KW - LabView
DA - 2016/06
PY - 2016
SN - 978-3-95450-147-2
DO - 10.18429/JACoW-IPAC2016-WEPOY001
UR - http://jacow.org/ipac2016/papers/wepoy001.pdf
ER -