27 August 2017 to 1 September 2017
RAI Congress Center, Amsterdam, The Netherlands
Europe/Amsterdam timezone

Improvement of Field Simulation Concept of Staggered Undulator with HTS YBCO Bulk

31 Aug 2017, 13:45
1h 45m
Posters Area

Posters Area

Poster Presentation of 1h45m A3 - Wigglers and Undulators Thu-Af-Po4.03

Speaker

Dr S.D. Chen (National Synchrotron Radiation Research Center)

Description

An undulator with a strong magnetic field in a short period will become an important light source device in an accelerator storage ring or a free-electron laser. The bulk YBCO can be used to construct a high-temperature-superconducting undulator with staggered array structure. The bulk YBCO of diameter 32 mm and thickness 2.5 mm was constructed and assembled as a staggered magnet array. The period length was 5 mm; the magnet gap is 4 mm. To estimate the strength of a sinusoidal field and to optimize the end-pole design to minimize the first field integral (i.e. electron angle) and second field integral (electron position), an energy-minimization method (EM-method) based on Bean’s model to simulate the field trapped in the HTS-Bulk is introduced. In this paper we focus on promoting the practical value of the EM-method simulation. Aggregating the experience of measurement of the bulk YBCO undulator at 77 K and 7 K and the experience of simulation work based on the EM-method, we tackle some issues to enhance the integrality of this undulator design work.

Submitters Country Taiwan

Primary authors

Dr S.D. Chen (National Synchrotron Radiation Research Center) Mr C.A. Chiang ( Science and Technology of Synchrotron Light source in Department of Physics, National Tsing Hua University) Dr C.M. Yang (Department of Material Science and Engineering, National Cheng Kung University) H.W. Luo (Department of Engineering and System Science, National Tsing Hua University) Dr J.C. Jan (National Synchrotron Radiation Research Center) Prof. I.G. chen (Department of Material Science and Engineering, National Cheng Kung University) Dr C.S. Hwang (National Synchrotron Radiation Research Center)

Presentation Materials