Design and Improvement of a Mini-Pole Superconducting Undulator at NSRRC
Authors:
- J. C. JanJJJ. C. Jan
- C. S. HwangCHC. S. Hwang
- P. H. LinPLP. H. Lin
- F. Y. LinFLF. Y. Lin
- 6 June 2008
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Applied Superconductivity
- Vol. 18 (2) , 427-430
Abstract
The wire windings and magnetic performance of the mini-pole superconducting undulator (SCU) at the National Synchrotron Radiation Research Center (NSRRC) are being improved. NbTi superconducting (SC) wire with a rectangular cross section 0.51 mm 0.77 mm was wound on a racetrack iron pole. The designed field strength was 1.4 T at excitation current 510 A. The bath LHe-cryostat cools the SC wire directly and uniformly using LHe. A stainless-steel (SS) beam duct (thickness 0.3 mm) is designed to separate the ultra-high vacuum (UHV) from the storage ring and the LHe. The SS beam duct is glued to the dummy arrays with resin epoxy. The dummy arrays provide a strong support for the beam duct, providing against deformity from a pressure differential. A vacuum test was performed with a short version of a beam duct (length 400 mm) at low temperature. This paper describes the construction of the magnet, the measurement of the field and the testing of the SS beam duct.Keywords
This publication has 6 references indexed in Scilit:
- Design of Cryogen-Free Mini-Pole Superconducting UndulatorIEEE Transactions on Applied Superconductivity, 2007
- Development of Mini-pole Superconducting UndulatorAIP Conference Proceedings, 2007
- Generation of x-ray radiation in a storage ring by a superconductive cold-bore in-vacuum undulatorPhysical Review Special Topics - Accelerators and Beams, 2006
- Design and Development of a Short-Period Superconducting Undulator at the APSIEEE Transactions on Applied Superconductivity, 2005
- Cryogenic system of the MAX-WigglerCryogenics, 2004
- Computing 3D magnetic fields from insertion devices2002