Title :
Experimental approach to ultra-cold ion beam at S-LSR
Author :
Noda, A. ; Shirai, T. ; Souda, H. ; Tanabe, M. ; Tongu, H. ; Ikegami, M. ; Ishikawa, T. ; Nakao, M. ; Fadil, H. ; Grieser, M. ; Meshkov, I. ; Smirnov, A. ; Noda, Kentaro
Author_Institution :
Kyoto Univ., Kyoto
Abstract :
At S-LSR, abrupt reduction of momentum spread of 7 MeV proton beam to ~2 times 10-6 at proton number of -2000 has been observed, which indicates phase transition to 1 dimensional ordered state. Attained proton temperatures after transition are 26 mueV and 1 meV for longitudinal and transverse directions, respectively, which compared with the corresponding values of 20 mueV and 34 meV for electron beam, indicates the magnetization of electron. Laser cooling of 24Mg+ has also been started and momentum spread of ~108 ions is reduced to 2 times 10-4, saturated with the momentum transfer from transverse degree of freedom by intra-beam scattering.
Keywords :
beam handling techniques; ion beams; laser cooling; proton beams; storage rings; 24Mg+ ion beam cooling; S-LSR; electron beam; electron volt energy 7 MeV; injector proton linac; laser cooling; magnetization; proton beam; proton temperatures; storage ring; ultracold ion beam; Cooling; Crystallization; Electron beams; Ion beams; Laser beams; Particle beam injection; Particle beams; Particle scattering; Protons; Ring lasers;
Conference_Titel :
Particle Accelerator Conference, 2007. PAC. IEEE
Conference_Location :
Albuquerque, NM
Print_ISBN :
978-1-4244-0916-7
DOI :
10.1109/PAC.2007.4441137
