Bulletin of the American Physical Society
6th Joint Meeting of the APS Division of Nuclear Physics and the Physical Society of Japan
Sunday–Friday, November 26–December 1 2023; Hawaii, the Big Island
Session D13: Instrumentation: Rare Event and Low-Level Signal Measurements
9:00 AM–11:45 AM,
Wednesday, November 29, 2023
Hilton Waikoloa Village
Room: Kona 2-3
Chair: Phillip Barbeau, Duke University
Abstract: D13.00008 : Development of the isomer tagging system for mass measurements at OEDO-SHARAQ*
10:45 AM–11:00 AM
Presenter:
Yuki Nakamura
Authors:
Yuki Nakamura
Mei Amitani
(Tokyo City University)
Chihaya Fukushima
(Tokyo City University)
Daiki Nishimura
(Tokyo City University)
Shin'ichiro Michimasa
(Center for Nuclear Study, the University of Tokyo)
Shutaro Hanai
(Center for Nuclear Study, the University of Tokyo)
Eiji Ideguchi
(RCNP, Osaka University)
Nobuaki Imai
(Center for Nuclear Study, the University of Tokyo)
Hiroki Nishibata
(Kyushu University)
Kodai Okawa
(Center for Nuclear Study, the University of Tokyo)
Takeshi Y Saito
(RIKEN AMO Physics Laboratory, Center for Nuclear Study, the University of Tokyo)
Daisuke Suzuki
(RIKEN Nishina Center)
Hiroyuki Takahashi
(Tokyo City University)
Hisato Tanaka
(Kyushu University)
Keita Kawata
(Center for Nuclear Study, the University of Tokyo)
Rin Yokoyama
(Center for Nuclear Study, the University of Tokyo)
Collaboration:
SHARAQ13 collaboration
The isomer tagging system, which consists of two HPGe detectors, two CeBr3 detectors and an active stopper composed of two 10-mm-thick plastic scintillators, was installed downstream of the final focal plane of the OEDO-SHARAQ in the air. The secondary beam stopped inside of the active plastic stopper. The two HPGe detectors were installed in close proximity perpendicular to the beam direction, and CeBr3 detectors were tilted at 45 degrees. Additionally, a veto scintillator was placed downstream of the active stopper to identify events that beam particles penetrate the stopper. These energy and timing data of the HPGe, CeBr3, plastic stopper, and veto were recorded using digital signal processers parallelly with the mass measurement data through a timestamp scheme. In this presentation, we will introduce the isomer tagging system and discuss the performances.
*This work was partly supported by JSPS KAKENHI Grant Number JP22H01230.
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