Development of a Multipole Wiggler at the PLS

The Pohang Accelerator Laboratory (PAL) has developed and installed a multipole wiggler (MPW14) to utilize high-energy synchrotron radiation at the Pohang Light Source (PLS). The MPW14 is a hybrid-type device with a period of 14 cm, a minimum gap of 14 mm, a maximum flux density of 2.02 Tesla, and a total magnetic structure length of 2056 mm. The peak flux density is higher compared to other wigglers with similar pole gaps and periods. The high peak flux density is achieved by using advanced new magnetic materials and by using 3-dimensional finite element (FEM) codes to optimize the magnetic geometry. Also, the optimal support positions on the backing beam and the compensation spring systems are determined to minimize the structure deformations. In this article, all the developments efforts for the PLS MPW14 wiggler are described. KCI Citation Count: 0