Performance test of the MAIKo active target
| Autor: | Furuno, T., Kawabata, T., Ong, H. J., Adachi, S., Ayyad, Y., Baba, T., Fujikawa, Y., Hashimoto, T., Inaba, K., Ishii, Y., Kabuki, S., Kubo, H., Matsuda, Y., Matsuoka, Y., Mizumoto, T., Morimoto, T., Murata, M., Sawano, T., Suzuki, T., Takada, A., Tanaka, J., Tanihata, I., Tanimori, T., Tran, D. T., Tsumura, M., Watanabe, H. D. |
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| Rok vydání: | 2018 |
| Předmět: | |
| Zdroj: | Nuclear Instruments and Methods in Physics Research Section A 908, 215-224 (2018) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1016/j.nima.2018.08.042 |
| Popis: | A new active target named MAIKo (Mu-PIC based Active target for Inverse Kinematics$_{\circ}$) 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 ($\mu$-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$^{\circ}$ was achieved for scattered $^{4}$He particles. Comment: 13 pages, 17 figures |
| Databáze: | arXiv |
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