Efficiency Enhancement of Indirect Transverse Laser Cooling with Synchro-Betatron Resonant Coupling by Suppression of Beam Intensity

• Hikaru Souda

• Masao Nakao

• Hiromu Tongu

• Kouichi Jimbo

• Kazuya Osaki

• Hiromi Okamoto

• Yosuke Yuri

• He Zhengqi

• Manfred Grieser

• Akira Noda

Abstract

The efficiency of indirect transverse laser cooling with synchro-betatron resonance coupling has been improved with the reduction in beam intensity by scraping the tail part of the beam. In order to measure the beam size at a low beam intensity, a new scheme to measure the beam profile by observation of the survival ratio with changing the scraper position has been established. With 10 4 particles, the transverse cooling time was reduced to 1.2 s, and the cooled horizontal and vertical beam sizes were 0.19 and 0.61 mm, corresponding to temperatures of 20 and 29 K, respectively, which is largely improved compared with that in our previous experiment [Nakao et al.: Phys. Rev. ST Accel. Beam 15 (2012) 110102].

Journal

• Japanese Journal of Applied Physics

  Japanese Journal of Applied Physics 52 (3R), 030202-, 2013-02-15

  IOP Publishing

Keywords

• General Physics and Astronomy
• General Engineering

Details

• CRID: 1360847874816460416
• NII Article ID: 210000141855
• DOI: 10.7567/jjap.52.030202
• ISSN: 13474065
• ISSN: 00214922
• Web Site: https://iopscience.iop.org/article/10.7567/JJAP.52.030202
• Web Site: https://iopscience.iop.org/article/10.7567/JJAP.52.030202/pdf
• Data Source:
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  • CiNii Articles
  • KAKEN