Magnetic design of a 14 mm period prototype superconducting undulator

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• 作者：Mona Gehlot^a ; ^{mona_gehlot@yahoo.com} ; G. Mishra^a ; ^b ; ^c ; Frederic Trillaud^b ; Geetanjali Sharma^c
• 关键词：Superconducting undulator ; Undulator ; Free electron laser ; Radia
• 刊名：Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
• 出版年：2017
• 出版时间：21 February 2017
• 年：2017
• 卷：846
• 期：Complete
• 页码：13-17
• 全文大小：1580 K
• 卷排序：846

文摘

In this paper we report the design of a 14 mm period prototype superconducting undulator that is under fabrication at Insertion Device Development Laboratory (IDDL) at Devi Ahilya Vishwavidyalaya, Indore, India. The field computations are made in RADIA and results are presented in an analytical form for computation of the on axis field and the field on the surface of the coil. On the basis of the findings, a best fit is presented for the model to calculate the field dependence on the gap and the current density. The fit is compared with Moser-Rossmanith formula proposed earlier to predict the magnetic flux density of a superconducting undulator. The field mapping is used to calculate the field integrals and its dependence on gap and current densities as well.