Calculation and analysis of the magnetic field of a transverse focusing undulator

Li Jiayu; Li Heting; Jia Qika

doi:10.11884/HPLPB201628.160092

Volume 28 Issue 10

Aug. 2016

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Article Navigation > High Power Laser and Particle Beams > 2016 > 28(10): 105104

Chen Zhiqiang, Jia Wei, He Xiaoping, et al. Double peak phenomenon of applied pulse voltage induced by flashover around parallel-plate electrodes[J]. High Power Laser and Particle Beams, 2019, 31: 070005. doi: 10.11884/HPLPB201931.180383

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Li Jiayu, Li Heting, Jia Qika. Calculation and analysis of the magnetic field of a transverse focusing undulator[J]. High Power Laser and Particle Beams, 2016, 28: 105104. doi: 10.11884/HPLPB201628.160092

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Calculation and analysis of the magnetic field of a transverse focusing undulator

doi: 10.11884/HPLPB201628.160092

1.
National Synchrotron Radiation Laboratory,University of Science and Technology of China,Hefei 230029,China

Received Date: 2016-03-24
Rev Recd Date: 2016-05-03
Publish Date: 2016-10-15

Abstract

Abstract

The transverse focusing undulators can be used for electron beams of low energy and smaller function. At present, there are some designs on transverse focusing undulators at home and abroad. This paper proposes several transverse focusing undulators of different magnetic structures which are based on the inclined surface of permanent magnet or/and pole blocks. Using the three-dimensional program Radia, the characteristics of focusing field of these undulators were calculated, the relationship between the focusing characteristics with the main parameters was studied, and performance of these undulators were also compared with other existing transverse focusing undulators. The results show that, for both the weak and strong focusing, several undulator schemes with better and simpler structures than the existing transverse focusing undulators were proposed. In addition, the average focusing gradient of weak focusing undulators does not increase significantly with the center magnetic field whereas the average focusing gradient of strong focusing undulators increases obviously with the center magnetic field.
- transverse focusing undulator,
- focusing parameters,
- inclined angle,
- numerical calculation

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