Performance test of the MAIKo active target

Performance test of the MAIKo active target
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DOI：
10.1016/j.nima.2018.08.042
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发表时间：
2018-09
期刊：
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
影响因子：
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通讯作者：
T. Furuno;T. Kawabata;H. Ong;S. Adachi;Y. Ayyad;T. Baba;Y. Fujikawa;Takashi Hashimoto;K. Inaba;Y. Ishii;S. Kabuki;H. Kubo;Y. Matsuda;Y. Matsuoka;T. Mizumoto;T. Morimoto;M. Murata;T. Sawano;Tomokazu Suzuki;A. Takada;J. Tanaka;I. Tanihata;I. Tanihata;T. Tanimori;D. T. Tran;D. T. Tran;M. Tsumura;H. Watanabe
T. Furuno;T. Kawabata;H. Ong;S. Adachi;Y. Ayyad;T. Baba;Y. Fujikawa;Takashi Hashimoto;K. Inaba;Y. Ishii;S. Kabuki;H. Kubo;Y. Matsuda;Y. Matsuoka;T. Mizumoto;T. Morimoto;M. Murata;T. Sawano;Tomokazu Suzuki;A. Takada;J. Tanaka;I. Tanihata;I. Tanihata;T. Tanimori;D. T. Tran;D. T. Tran;M. Tsumura;H. Watanabe
中科院分区：
其他
文献类型：
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作者：
T. Furuno;T. Kawabata;H. Ong;S. Adachi;Y. Ayyad;T. Baba;Y. Fujikawa;Takashi Hashimoto;K. Inaba;Y. Ishii;S. Kabuki;H. Kubo;Y. Matsuda;Y. Matsuoka;T. Mizumoto;T. Morimoto;M. Murata;T. Sawano;Tomokazu Suzuki;A. Takada;J. Tanaka;I. Tanihata;I. Tanihata;T. Tanimori;D. T. Tran;D. T. Tran;M. Tsumura;H. Watanabe

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京都大学和大坂大学核物理研究中心（RCNP）开发了一种名为MAIKo（基于Mu-PIC的反向动力学主动靶）的新主动靶。MAIKo适用于逆运动学中前向散射角下不稳定核的丢失质谱。MAIKo由一个时间投影室（TPC）组成，其中包含一个微像素室（μ-PIC）作为电子倍增和收集系统。在MAIKo中，介质气体也起着反应靶的作用，因此可以以高位置分辨率探测低能反冲粒子。MAIKo TPC在430 hPa下使用He（93%）+iso-C4 H10（7%）和He（93%）+CO2（7%）混合气体。用α源和56 MeV的4 He束评价了MAIKo的气体增益和角分辨率。TPC在高达1000 kcps的光束强度下稳定运行。本文提出了一种利用Hough变换分析散射事件的跟踪算法。对散射的~ 4 He粒子的角分辨达到1.3°。
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-C 4 H 10 (7%) and He (93%)+ CO 2 (7%) mixture gasses at 430 hPa. The gas gain and the angular resolution of MAIKo were evaluated with an alpha source and a 4 He 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 4 He particles.