Abstract

An angle-tunable wedge degrader system has been developed to be used as a monoenergetic degrader for a low-energy radioactive isotope (RI) beamline working with the slowing-down method. The system consists of a pair of aluminum degraders with quadratic cross sections, whose overlap works effectively as a wedge-type degrader; the wedge angle can be tuned by changing the relative position of the two aluminum degraders. This paper presents the operation principle, estimation of performance and application range by simulation, and the experimental validation.

Details

Title
Angle-tunable wedge degrader for an energy-degrading RI beamline
Author
Hwang, Jongwon 1 ; Shin’ichiro Michimasa 1 ; Ota, Shinsuke 1 ; Dozono, Masanori 1 ; Imai, Nobuaki 1 ; Yoshida, Koichi 2 ; Yanagisawa, Yoshiyuki 2 ; Kusaka, Kensuke 2 ; Ohtake, Masao 2 ; Ahn, Deuk Soon 2 ; Beliuskina, Olga 1 ; Fukuda, Naoki 2 ; Iwamoto, Chihiro 1 ; Kawase, Shoichiro 3 ; Kawata, Keita 1 ; Kitamura, Noritaka 1 ; Masuoka, Shoichiro 1 ; Otsu, Hideaki 2 ; Sakurai, Hiroyoshi 2 ; Schrock, Philipp 1 ; Sumikama, Toshiyuki 2 ; Suzuki, Hiroshi 2 ; Takaki, Motonobu 1 ; Takeda, Hiroyuki 2 ; Tsunoda, Rieko 1 ; Wimmer, Kathrin 4 ; Yako, Kentaro 1 ; Shimoura, Susumu 1 

1  Center for Nuclear Study, the University of Tokyo, Wako, Saitama 351-0198, Japan 
2  RIKEN Nishina Center for Accelerator-Based Science, Wako, Saitama 351-0198, Japan 
3  Department of Advanced Energy Engineering Science, Kyushu University, Kasuga, Fukuoka 816-8560, Japan 
4  Department of Physics, the University of Tokyo, Bunkyo, Tokyo 113-0033, Japan 
Publication year
2019
Publication date
Apr 2019
Publisher
Oxford University Press
e-ISSN
20503911
Source type
Scholarly Journal
Language of publication
English
DOI
https://doi.org/10.1093/ptep/ptz028
ProQuest document ID
3171483642
Copyright
© The Author(s) 2019. Published by Oxford University Press on behalf of the Physical Society of Japan. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.