Title :
Laser cooling of stored beams in ASTRID
Author :
Hangst, J.S. ; Berg-Sorensen, K. ; Jessen, P.S. ; Kristensen, M. ; Molmer, K. ; Nielsen, J.S. ; Poulsen, O. ; Schiffer, J.P. ; Shi, P.
Author_Institution :
Inst. of Phys., Aarhus Univ., Denmark
Abstract :
Results of laser cooling experiments on 100 keV Li/sup +/ beams in the storage ring ASTRID are reported. The metastable fraction of the lithium beam has been laser cooled to a momentum spread dp/p approximately 10/sup -6/, corresponding to a rest frame temperature T/sub ///=1 mK. Laser diagnostic methods have been employed to study the dynamics of intrabeam relaxation. A theoretical model of laser cooling has been used to interpret the experimental results. Molecular dynamics simulations of intrabeam interactions and the connection with crystalline beams are also discussed.<>
Keywords :
beam handling techniques; ion accelerators; laser beam applications; lithium; positive ions; storage rings; Li/sup +/; intrabeam relaxation; laser cooling experiments; metastable fraction; storage ring ASTRID; Cooling; Crystallization; Laser beams; Laser modes; Laser theory; Lithium; Metastasis; Ring lasers; Storage rings; Temperature;
Conference_Titel :
Particle Accelerator Conference, 1991. Accelerator Science and Technology., Conference Record of the 1991 IEEE
Conference_Location :
San Francisco, CA, USA
Print_ISBN :
0-7803-0135-8
DOI :
10.1109/PAC.1991.164770
