HIAT09 - List of Authors (Jimbo, K.)

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Jimbo, K.

Paper	Title	Page
D-06	Approach to 2 Dimensional Laser Cooling and its Optical Observation System	299
	A. Noda, M. Nakao, H. Souda, H. Tongu Kyoto University/ICR, Kyoto A.V. Smirnov JINR, Dubna T. Shirai NIRS, Chiba-shi K. Jimbo Kyoto University/IAE, Kyoto M. Grieser MPI-K, Heidelberg
	Funding: The present work was supported by Advanced Compact Accelerator Development program by MEXT of Japanese Government. Support from Global COE, The Next Generation of Physics, is also greatly appreciated. Laser cooling for bunched Mg ion beam with the kinetic energy of 40 keV has been applied with S-LSR at ICR, Kyoto University. Up to now, clear peaking of equilibrium momentum spread after laser cooling has been observed at such a synchrotron tune as resonates with the horizontal betatron tune, which is considered to be due to heat transfer from the horizontal degree of freedom to the longitudinal one. In order to demonstrate transverse cooling by observation of reduction of the horizontal beam size, spontaneous emission from laser induced excited state of the Mg ion, has been observed with the use of CCD camera. Some reduction of horizontal beam size has been observed with a certain synchrotron tune, a little bit smaller compared with the fractional part of the horizontal tune.

Paper

Title

Page

D-06

Approach to 2 Dimensional Laser Cooling and its Optical Observation System

299

A. Noda, M. Nakao, H. Souda, H. Tongu
Kyoto University/ICR, Kyoto
A.V. Smirnov
JINR, Dubna
T. Shirai
NIRS, Chiba-shi
K. Jimbo
Kyoto University/IAE, Kyoto
M. Grieser
MPI-K, Heidelberg

Funding: The present work was supported by Advanced Compact Accelerator Development program by MEXT of Japanese Government. Support from Global COE, The Next Generation of Physics, is also greatly appreciated.

Laser cooling for bunched Mg ion beam with the kinetic energy of 40 keV has been applied with S-LSR at ICR, Kyoto University. Up to now, clear peaking of equilibrium momentum spread after laser cooling has been observed at such a synchrotron tune as resonates with the horizontal betatron tune, which is considered to be due to heat transfer from the horizontal degree of freedom to the longitudinal one. In order to demonstrate transverse cooling by observation of reduction of the horizontal beam size, spontaneous emission from laser induced excited state of the Mg ion, has been observed with the use of CCD camera. Some reduction of horizontal beam size has been observed with a certain synchrotron tune, a little bit smaller compared with the fractional part of the horizontal tune.