A resonant Schottky pick-up for Rare-RI Ring at RIKEN

作者：Suzaki F^*; Abe Y; Ozawa A; Suzuki T; Uesaka T; Wakasugi M; Yamada K; Yamaguchi T; Yamaguchi Y; Zenihiro J

来源：Physica Scripta, 2015, T166: 014059.

DOI：10.1088/0031-8949/2015/T166/014059

• storage rings
• Schottky noise pick-ups
• isochronous mass spectrometry

The Rare-RI Ring project has been launched at RIKEN. The Rare-RI Ring is a storage ring specially designed for the isochronous mass spectrometry of unstable nuclei. Precise mass measurements (delta m/m similar to 10(-6)) are necessary to reveal the r-process path and, therefore, the ion-optical conditions must be tuned to yield isochronicity of order 10(-6). For this purpose, we employ a highly sensitive resonant Schottky cavity as a probe for single-ion detection. Here, we first explain this technique theoretically and derive the necessary equations. Then, based on the results of off-line tests, we determine the sensitivity of the Schottky pick-up and estimate the intensities of the signals induced inside the cavity.

• 出版日期2015-11