Laser Cooling for 3-D Crystalline State at S-LSR
- Advanced Research Center for Beam Science, Institute for Chemical Research, Kyoto University, Gokano-sho, Uji-city, 611-0011, Kyoto (Japan)
- National Institute of Radiological Sciences, Anagawa 4-9-1, Inage-ku, Chiba-city, 263-8555, Chiba (Japan)
- Accelerator Engineering Co. Ltd., Anagawa 4-9-1, Inage-ku, Chiba-city, 263-8555, Chiba (Japan)
- Graduate School of Advanced Science of Matter, Hiroshima University, Higashi Hiroshima, Hiroshima (Japan)
- Max-Planck-Institut fuer Kernphysik, Postfach 103980, D-69029, Heidelberg (Germany)
At ICR, Kyoto University, an ion storage and cooler ring, S-LSR has been constructed. Its mean radius and maximum magnetic rigidity are 3.6 m and 1.0 Tm, respectively. 24Mg+ ions with the kinetic energy of 35 keV are to be laser-cooled by the frequency doubled ring dye laser with the wavelength of 280 nm. In order to avoid the shear heating, dispersion compensation is planned by the overlap of the electric field with the dipole magnetic field in all 6 deflection elements. Intermediate electrodes, which can be potential adjusted, are to be utilized so as to realize a uniform electric field radial direction within a rather limited vertical gap, 70 mm of the dipole magnet. Synchro-betatron coupling needed for 3-dimensional laser cooling is to be realized by placing the RF cavity at the siraight section with finite dispersion for the normal mode lattice, which is expected to realize 1 dimensional string. For the case of dispersion compensated lattice to suppress the shear heating, possibility of realizing ''tapered cooling'' with use of an Wien Filter combined with the laser cooling is being investigated in order to avoid the usage of the coupling cavity, which seems to be difficult to fabricate. With the presence of such a tapered cooling, formation of a 1 shell crystalline structure is expected.
- OSTI ID:
- 20798446
- Journal Information:
- AIP Conference Proceedings, Vol. 821, Issue 1; Conference: COOL05: International workshop on beam cooling and related topics, Galena, IL (United States), 18-23 Sep 2005; Other Information: DOI: 10.1063/1.2190156; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
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