Paper 
Title 
Page 
MOPB098 
Planning for Experimental Demonstration of Transverse Emittance Transfer at the GSI UNILAC through EigenEmittance Shaping 
404 

 C. Xiao, O.K. Kester
IAP, Frankfurt am Main, Germany
 L. Groening
GSI, Darmstadt, Germany



The minimum transverse emittances achievable in a beam line are determined by the two transverse eigenemittances of the beam. For vanishing interplane correlations they are equal to the transverse rmsemittances. Eigenemittances are constants of motion for all symplectic beam line elements, i.e. (even tilted) linear elements. To allow for rmsemittance transfer, the eigenemittances are changed by a nonsymplectic action to the beam, preferably preserving the 4drmsemittance. Unlike emittance swapping the presented concept will allow transforming a beam of equal rmsemittances into a beam of different rmsemittances while preserving the 4drmsemittance. This contribution will introduce the concept for eigenemittance shaping and rmsemittance transfer at an ion linac. The actual work status towards the experimental demonstration of the concept at the GSI UNILAC is presented.


