Author/Authors :
Nagai، نويسنده , , R. and Kobayashi، نويسنده , , H. and Sasaki، نويسنده , , S. and Sawamura، نويسنده , , M. and Sugimoto، نويسنده , , M. and Kato، نويسنده , , R. and Kikuzawa، نويسنده , , N. and Ohkubo، نويسنده , , M. and Minehara، نويسنده , , E. and Ikehata، نويسنده , , T. and Mase، نويسنده , , H.، نويسنده ,
Abstract :
A newly designed hybrid undulator (DFTH-1), whose field termination parts are a novel implementation of the displacement-free termination scheme, has been constructed for the JAERI FEL project. The field termination part of the undulator was designed to minimize the electron trajectory walkoff by using the 3D magnetic field computational code named ELF/Magic. The DFTH-1 undulator could reduce the walkoff by one third of that of the conventional hybrid undulator with non-steering termination.
