FRPP33 　ポスターセッション③　 9月4日 ポスター会場 10:30-12:30

第三高調波電圧誘導法によるNbTiN多層薄膜構造の超伝導特性の評価

EVALUATION OF SUPERCONDUCTING CHARACTERISTICS OF NbTiN MULTILAYER THIN-FILM STRUCTURE BY THE THIRD HARMONIC VOLTAGE METHOD

○佐伯 学行，片山 領，早野 仁司，井藤 隼人，久保 毅幸（KEK），岩下 芳久，頓宮 拓（京都大学），Rimmer Robert，Valente-Feliciano Anne-Marie，Hannon Fay（JLab）

○Takayuki Saeki, Ryo Katayama, Hitoshi Hayano, Hayato Ito, Takayuki Kubo (KEK), Yoshihisa Iwashita, Hiromu Tongu (Kyoto University), Robert Rimmer, Anne-marie Valente-feliciano, Fay Hannon (JLab)

In recent years, it has been pointed out that the maximum accelerating gradient of a superconducting RF cavity can be increased by coating the inner surface of the cavity with a multilayer thin-film structure consisting of alternating insulating and superconducting layers. In this structure, the principal parameter that limits the performance of the cavity is the critical magnetic field, or in other words the effective Hc1, at which vortices begin penetrating into the superconductor layer. We made samples that have a NbTiN/Insulator thin-film structure on a pure Nb substrate. We measured the effective Hc1 of the NbTiN/Insulator/Nb-structure samples by using the third-harmonic voltage method. This presentation reports details of the measurement results. 登録番号 10184 に同様の発表がありますが、発表者と要旨に漏れや間違いがあります。ご面倒をおかけしますが、登録番号 10184 はcancelとしてください。よろしくお願いいたします。