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Ultralow emittance beam production based on doppler laser cooling and coupling resonance
https://repo.qst.go.jp/records/54573
https://repo.qst.go.jp/records/545735f9cb5e6-6034-422b-b05c-2b8e1409f4f7
| Item type | 会議発表論文 / Conference Paper(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2015-07-22 | |||||
| タイトル | ||||||
| タイトル | Ultralow emittance beam production based on doppler laser cooling and coupling resonance | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_5794 | |||||
| 資源タイプ | conference paper | |||||
| アクセス権 | ||||||
| アクセス権 | metadata only access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
| 著者 |
Noda, Akira
× Noda, Akira× Nakao, Masao× al., et× 野田 章× 中尾 政夫 |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Doppler laser cooling has been applied to low-energy (40 keV) 24Mg+ ions together with the Synchro-Betatron Resonance Coupling (SBRC) method at the S-LSR in ICR, Kyoto University. The S-LSR storage ring has a high super periodicity of 6 preferable from the beam dynamical point of view. Following the realization of one dimensional (1D) ordering of a 7 MeV proton beam, three dimensional (3D) laser cooling has been experimentally demonstrated for ions with non-negligible velocity (v/c=0.0019, c: light velocity). So as to suppress heating effects due to intra-beam scattering (IBS), the circulating ion beam intensity has been reduced by scraping and the normalized emittances: EPSn of 1.3×10-11 πm·rad and 8.5×10-12 πm·rad, corresponding to 6.4 K and 2.1 K, have been realized for the horizontal and vertical directions, respectively with a beam intensity of ~104 , which are the lowest temperatures ever attained by laser cooling. Molecular Dynamics (MD) computer simulation predicts the realization of the lowest beam temperatures of ~0.001 K and ~0.1 K corresponding to EPSn of the order of 10-13πm·rad and 10-12 πm·rad for the longitudinal and transverse directions, respectively. With the same condition as utilized for the real experiments at S-LSR, formation of a 1D longitudinal string is expected if the laser spot size and laser detuning are adjusted to the proper values of 1.5 mm and -42 MHz, respectively with ramping of the detuning. 3D ordered state is also predicted for a coasting beam with laser cooling utilizing dispersive cooling. | |||||
| 書誌情報 |
IPAC2014: Proceedings of the 5th International Particle Accelerator Conference 巻 IPAC, 号 14, p. 28-33, 発行日 2014-08 |
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| 出版者 | ||||||
| 出版者 | JACoW | |||||
| ISBN | ||||||
| 識別子タイプ | ISBN | |||||
| 関連識別子 | 978-3-95450-132-8 | |||||
