Development of secondary electron time detector for ion beams

S. Suzuki, A. Ozawa, T. Moriguchi, Y. Ichikawa, M. Amano, D. Kamioka, Y. Tajiri, K. Hiraishi, T. Matsumoto, D. Nagae, Y. Abe, S. Naimi, T. Yamaguchi, S. Omika, Z. Ge, N. Tadano, K. Wakayama, A. Kitagawa, S. Sato

Research output: Contribution to journalConference articlepeer-review

Abstract

A time detector is under development for the mass measurement with the Rare-RI (radioactive isotope) Ring at the RI beam factory (RIBF) in RIKEN. To perform successful mass measurement, a time detector requires a small energy loss of the ion beams, a good time resolution, and a sufficient detection efficiency. To satisfy these requirements, our time detector utilizes isochronous transport of the secondary electrons emitted from a thin foil. The isochronous transport of the electrons from the foil to the micro-channel plate (MCP) detector is provided by the crossed electromagnetic field. To improve the detection efficiency, the transport time of the electrons is reduced by a factor of two using a strong magnetic field. An experiment to test the performance of the time detector was carried out with heavy ion beams. The time resolution was σ < 100 ps with a maximum detection efficiency of 99% for heavy ion beams. The details of the detector are presented in this contribution.

Original languageEnglish
Article number111
JournalProceedings of Science
Volume2016-September
Publication statusPublished - Jan 1 2016
Externally publishedYes
Event26th International Nuclear Physics Conference, INPC 2016 - Adelaide, Australia
Duration: Sep 11 2016Sep 16 2016

All Science Journal Classification (ASJC) codes

  • General

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