TY - JOUR
T1 - Performance test of the MAIKo active target
AU - Furuno, T.
AU - Kawabata, T.
AU - Ong, H. J.
AU - Adachi, S.
AU - Ayyad, Y.
AU - Baba, T.
AU - Fujikawa, Y.
AU - Hashimoto, T.
AU - Inaba, K.
AU - Ishii, Y.
AU - Kabuki, S.
AU - Kubo, H.
AU - Matsuda, Y.
AU - Matsuoka, Y.
AU - Mizumoto, T.
AU - Morimoto, T.
AU - Murata, M.
AU - Sawano, T.
AU - Suzuki, T.
AU - Takada, A.
AU - Tanaka, J.
AU - Tanihata, I.
AU - Tanimori, T.
AU - Tran, D. T.
AU - Tsumura, M.
AU - Watanabe, H. D.
N1 - Funding Information:
The authors are grateful to the cyclotron crews at RCNP for providing the high-quality and stable 4 He beam. The authors also thank Dr. H. Baba from RIKEN for his valuable advice on the data acquisition system. T. F. appreciates the JSPS Research Fellowship for young scientists, Japan under program No. JP14J00949 . H. J. O. and I. T. acknowledge the support of A. Tohsaki and his spouse. The present work was supported by JSPS KAKENHI, Japan Grant Nos. JP20244030 , JP23340068 , JP23224008 and 15H02091 .
Publisher Copyright:
© 2018 Elsevier B.V.
PY - 2018/11/11
Y1 - 2018/11/11
N2 - A new active target named MAIKo (Mu-PIC based Active target for Inverse Kinematics∘) has been developed at Kyoto University and Research Center for Nuclear Physics (RCNP), Osaka University. MAIKo is suited for missing-mass spectroscopy of unstable nuclei at forward scattering angles in inverse kinematics. MAIKo consists of a time projection chamber (TPC), which incorporates a micro-pixel chamber (μ-PIC) as the electron multiplication and collection system. In MAIKo, the medium gas also plays the role of a reaction target, thus allowing detection of low-energy recoil particles with high position resolution. The MAIKo TPC was commissioned with He(93%)+iso-C4H10(7%) and He(93%)+CO2(7%) mixture gasses at 430 hPa. The gas gain and the angular resolution of MAIKo were evaluated with an alpha source and a 4He beam at 56 MeV. The TPC was stably operated up to 1000-kcps beam intensity. A tracking algorithm using the Hough transform method has been developed to analyze scattering events. An angular resolution of 1.3°was achieved for scattered 4He particles.
AB - A new active target named MAIKo (Mu-PIC based Active target for Inverse Kinematics∘) has been developed at Kyoto University and Research Center for Nuclear Physics (RCNP), Osaka University. MAIKo is suited for missing-mass spectroscopy of unstable nuclei at forward scattering angles in inverse kinematics. MAIKo consists of a time projection chamber (TPC), which incorporates a micro-pixel chamber (μ-PIC) as the electron multiplication and collection system. In MAIKo, the medium gas also plays the role of a reaction target, thus allowing detection of low-energy recoil particles with high position resolution. The MAIKo TPC was commissioned with He(93%)+iso-C4H10(7%) and He(93%)+CO2(7%) mixture gasses at 430 hPa. The gas gain and the angular resolution of MAIKo were evaluated with an alpha source and a 4He beam at 56 MeV. The TPC was stably operated up to 1000-kcps beam intensity. A tracking algorithm using the Hough transform method has been developed to analyze scattering events. An angular resolution of 1.3°was achieved for scattered 4He particles.
KW - Active target
KW - Hough transformation
KW - MAIKo
KW - Missing-mass spectroscopy
KW - Time projection chamber
KW - μ-PIC
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U2 - 10.1016/j.nima.2018.08.042
DO - 10.1016/j.nima.2018.08.042
M3 - Article
AN - SCOPUS:85052436294
SN - 0168-9002
VL - 908
SP - 215
EP - 224
JO - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
JF - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
ER -