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Latest results of experimental approach to ultra-cold beam at S-LSR
https://repo.qst.go.jp/records/54592
https://repo.qst.go.jp/records/54592b3677490-c6c5-4ccc-85db-b36342b84101
| Item type | 会議発表論文 / Conference Paper(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2015-08-25 | |||||
| タイトル | ||||||
| タイトル | Latest results of experimental approach to ultra-cold beam at S-LSR | |||||
| 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× Souda, Hikaru× Tongu, Hiromu× Okamoto, Hiromi× Osaki, Kazuya× Yuri, Yosuke× Jimbo, Kouichi× Grieser, Manfred× He, Zhengqi× 野田 章× 中尾 政夫× 想田 光× 頓宮 拓× 岡本 宏己× 百合 庸介 |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Utilizing S-LSR which has a super-periodicity of 6 and is designed to be tough against resonant perturbation to the circulating beam, we have tried to approach as low as possible temperature with laser cooled 40 keV 24Mg+ ion beam. With the use of theoretically proposed Synchro-Betatron Resonance Coupling scheme, we have experimentally demonstrated the capability of active indirect transverse laser cooling. At first, the achieved transverse cooling efficiency was limited due to heating caused by intra-beam scattering (IBS). For the purpose of reduction of IBS heating, we have established a scheme to control the circulating ion beam intensity down to ~104 by scraping the outskirt of the beam with the use of a horizontally moving scraper, which enabled us to cool down the transverse beam temperatures down to 20 K and 29 K for horizontal and vertical directions, respectively for the operation tune without H-V coupling. They were modified to be 40 K and 11 K by the horizontal and vertical coupling with the difference resonance with an excitation of a solenoid of 22.5 G, which were further improved to 7.0 K and 2.1 K adding deceleration by an induction accelerator of 6 mV/m using a -26 MHz detuned laser. |
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| 書誌情報 |
Proceedings of Workshop on Beam Cooling and Related Topics (COOL '13) p. 157-161, 発行日 2013-11 |
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