Analysis of pulsed wire method for field integral measurements in undulators

Pramana

Ganeshwar Mishra¹  Vinit Kumar1² 

[1] Physics Department, Devi Ahilya University, Khandwa Road, Indore 452 017, India$$;Beam Physics and Free Electron Laser Laboratory, Raja Ramanna Centre for Advanced Technology, Indore 452 013, India$$

关键词: Undulator;    free-electron laser;    synchrotron radiation source;    magnetic characterization.;   

DOI  :  

学科分类：物理（综合）

来源: Indian Academy of Sciences

【 摘 要 】

Pulsed wire technique is a fast and accurate method for the measurement of first and second field integrals of undulators used in free-electron lasers and synchrotron light sources. In this paper, we present a theoretical analysis of this technique by finding out the analytic solution of the differential equation for the forced vibration of the wire taking dispersion due to stiffness into account. Method of images is used to extend these solutions to include reflections at the ends. For long undulators, the effect of dispersion of the acoustic wave in the wire could be significant and our analysis provides a method for the evaluation of the magnetic field profile even in such cases taking the effect due to dispersion into account in an exact way.

【 授权许可】

Unknown