Author/Authors :
Bahrdt، نويسنده , , J. and Frentrup، نويسنده , , W. and Gaupp، نويسنده , , A. and Scheer، نويسنده , , M. and Gudat، نويسنده , , W. and Ingold، نويسنده , , G. and Sasaki، نويسنده , , S.، نويسنده ,
Abstract :
Two APPLE II type twin undulators are installed at BESSY II. They can either be operated in a chicane mode providing variable polarization at high switching rates or in a combined mode using a modulator for phase adaption. Studies on magnet block inhomogeneities have started to further improve the field quality and to reduce the effort on shimming.
