@article{oai:repo.qst.go.jp:00080235,
 author = {Shinya, Takahiro and Weber, Moises and Fagotti, Enrico and Hayashi, Kenichi and Kubo, Naoya and Marchena, Alvaro and Moya, Ivan and Regidor, David and Scantamburlo, Francesco and Akagi, Tomoya and Antoniazzi, Loris and Bellan, Luca and Cara, Philippe and Comunian, Michele and Dzitko, Herve and Ebisawa, Takashi and Gex, Dominique and Grespan, Francesco and Hirata, Yosuke and Jokinen, Antti and Kasugai, Atsushi and Kirpitchev, Igor and Kobayashi, Hitoshi and Kondo, Keitaro and Maebara, Sunao and Mendez, Puri and Molla, Joaquin and Montis, Maurizio and de la Morena, Cristina and Nakayama, Takahide and Palmieri, Antonio and Pisent, Andrea and Sakamoto, Keishi and Shimosaki, Yoshito and Sugimoto, Masayoshi and Takayama, Ken and Takahiro, Shinya and Hayashi, Kenichi and Kubo, Naoya and Tomoya, Akagi and Takashi, Ebisawa and Yosuke, Hirata and Atsushi, Kasugai and Kobayashi, Hitoshi and Keitaro, Kondo and Sunao, Maebara and Nakayama, Takahide and Keishi, Sakamoto and Yoshito, Shimosaki and Masayoshi, Sugimoto and Takayama, Ken},
 issue = {6},
 journal = {IEEE TRANSACTIONS ON PLASMA SCIENCE},
 month = {Apr},
 note = {The eight-chain RF system and radio frequency quadrupole (RFQ) linac were successfully integrated at the facility of the Linear IFMIF Prototype Accelerator (LIPAc). We achieved an unprecedented high current deuteron beam up to
55 mA in pulse operation (300 μs, 1 Hz). The keys of the success were (1) understanding reflected power from RFQ to RF system, (2) tuning each RF chain individually, (3) intensive RF conditioning for holding the stable RF power in the RFQ, and (4) optimizing the beam loading compensation control. Interestingly, the reflection at the breakdown in RF conditioning was higher than an estimation and reached up to 600 kW so far. In order to avoid damage on tetrodes by the high reflection, the impedance of each circulator was accurately adjusted.},
 title = {Integration of 175 MHz LIPAc RF system and RFQ Linac for Beam Commissioning},
 volume = {48},
 year = {2020}
}