Electron cooling of bunched ion beam at NIRS-HIMAC

✍ Scribed by K. Noda; S. Shibuya; D. Tann; S. Ninomiya; T. Uesugi; T. Furukawa; T. Honma; T. Iwashima; H.Y. Ogawa; Y. Hashimoto; T. Fujisawa; H. Uchiyama; T. Uesugi; M. Muramatsu; E. Syresin

• Publisher: Elsevier Science
• Year: 2004
• Tongue: English
• Weight: 309 KB
• Volume: 532
• Category: Article
• ISSN: 0168-9002
• DOI: 10.1016/j.nima.2004.06.039

✦ Synopsis

Electron-cooling experiments have been carried out at the HIMAC-synchrotron in order to provide high-quality beams for medical and related research. For investigating the behavior of the free radicals, especially, the beam bunch was compressed by electron cooling with a triangle-wave RF-field. The dependences of the bunch length on the electron energy and the RF voltage were investigated under various intensities of Ar 18+ beam. As a result, the bunch length was limited by around 20 ns due to the space-charge effect under an intensity of 1.33 Â 10 6 ions/bunch and an RF amplitude of 340 V.