Beam test of a new radio frequency quadrupole linac for the Japan Proton Accelerator Research Complex

We performed a beam test of a new radio frequency quadrupole linac (RFQ III) for the beam current upgrade of the Japan Proton Accelerator Research Complex. First, the conditioning of RFQ III was conducted, and after 20 h of conditioning, RFQ III became very stable with a nominal peak power and duty...

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Veröffentlicht in:Physical review special topics. PRST-AB. Accelerators and beams 2014-12, Vol.17 (12), p.120101, Article 120101
Hauptverfasser: Kondo, Yasuhiro, Morishita, Takatoshi, Yamazaki, Saisyun, Hori, Toshihiko, Sawabe, Yuki, Chishiro, Etsuji, Fukuta, Shinpei, Hasegawa, Kazuo, Hirano, Koichiro, Kikuzawa, Nobuhiro, Koizumi, Isao, Miura, Akihiko, Oguri, Hidetomo, Ohkoshi, Kiyonori, Sato, Fumiaki, Shinozaki, Shinichi, Ueno, Akira, Kawamata, Hiroshi, Sugimura, Takashi, Takagi, Akira, Fang, Zhigao, Fukui, Yuji, Futatsukawa, Kenta, Ikegami, Kiyoshi, Maruta, Tomofumi, Miyao, Tomoaki, Nanmo, Kesao
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Sprache:eng
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Zusammenfassung:We performed a beam test of a new radio frequency quadrupole linac (RFQ III) for the beam current upgrade of the Japan Proton Accelerator Research Complex. First, the conditioning of RFQ III was conducted, and after 20 h of conditioning, RFQ III became very stable with a nominal peak power and duty factor of 400 kW and 1.5%, respectively. An off-line beam test was subsequently conducted before installation in the accelerator tunnel. The transmission, transverse emittance, and energy spread of the 50-mA negative hydrogen beam from RFQ III were measured and compared with simulation results. The experiment and simulation results showed good agreement; therefore, we conclude that the performance of RFQ III conforms to its design.
ISSN:1098-4402
1098-4402
2469-9888
DOI:10.1103/PhysRevSTAB.17.120101