Development of Stretched wire measurement bench at IDDL, DAVV Indore

International Conference on Recent Trends in Physics 2016

Gehlot, Mona^1 ; Mishra, G.^1

Insertion Device Development Lab, School of Physics, DAVV, Indore, India^1

关键词: Analytical approach;    Constant velocities;    Field integral;    Field measurement;    First integral;    Measurement accuracy;    Voltage fluctuations;    Wire vibrations;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/755/1/012054/pdf
DOI  :  10.1088/1742-6596/755/1/012054

来源: IOP

【 摘 要 】

A stretched wire magnetic measurement bench is under development at IDDL, DAVV, Indore. In this method a multistrend wire consisting of N turns is stretched inside the undulator to measure the field integrals of the undulators. The wire moved with constant velocity of translation measures the first integral of the undulator field. The cross motion of the wire at the undulator ends measures the second field integral. The measurement accuracy depends on the wire conditions and material properties. In this paper we follow an analytical approach to find the voltage fluctuations due to wire vibrations during the field measurement. It is shown that the voltage fluctuations depend on undulator gap, magnitude of the impulse on the wire. The mass density and the length of the wire also cause sizeable voltage fluctuations. The analytical derived expression is analysed to optimize system parameters for minimum errors during the measurement.