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arXiv 1802.01745physics.ins-dethep-ex
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抗辐射LGAD设计

Radiation resistant LGAD design

M. Ferrero, R. Arcidiacono, M. Barozzi, M. Boscardin, N. Cartiglia, G. F. Dalla Betta, Z. Galloway, M. Mandurrino, S. Mazza, G. Paternoster, F. Ficorella, L. Pa… 展开作者

M. Ferrero, R. Arcidiacono, M. Barozzi, M. Boscardin, N. Cartiglia, G. F. Dalla Betta, Z. Galloway, M. Mandurrino, S. Mazza, G. Paternoster, F. Ficorella, L. Pancheri, H-F W. Sadrozinski, V. Sola, A. Staiano, A. Seiden, F. Siviero, M. Tornago, Y. Zhao

摘要:

在本文中,我们报告的50微米厚的LGAD探测器在布鲁诺凯斯勒基金会采用几种不同的掺杂组合的增益层的耐辐射性。设计并成功制作了增益层掺杂硼、硼低扩散、镓、碳酸硼和碳酸镓的LGAD探测器。这些传感器已暴露于中子注量高达$ϕ_n \sim 3 \cdot 10^{16}\; n/cm^2$和质子注量高达$ϕ_p \sim 9\cdot10^{15}\; p/cm^2$,以测试其耐辐射性。实验结果表明,镓掺杂的LGAD比硼掺杂的LGAD更严重地受到初始受主去除的影响,而碳的存在降低了镓和硼掺杂的初始受主去除。硼低扩散显示出比标准硼注入更高的抗辐射性,表明初始受主去除机制依赖于注入宽度。这项研究还表明,质子照射是至少两倍更有效地产生初始受体去除,使质子照射远比中子照射更具破坏性。

英文摘要:

In this paper, we report on the radiation resistance of 50-micron thick LGAD detectors manufactured at the Fondazione Bruno Kessler employing several different doping combinations of the gain layer. LGAD detectors with gain layer doping of Boron, Boron low-diffusion, Gallium, Carbonated Boron and Carbonated Gallium have been designed and successfully produced. These sensors have been exposed to neutron fluences up to $ϕ_n \sim 3 \cdot 10^{16}\; n/cm^2$ and to proton fluences up to $ϕ_p \sim 9\cdot10^{15}\; p/cm^2$ to test their radiation resistance. The experimental results show that Gallium-doped LGADs are more heavily affected by initial acceptor removal than Boron-doped LGAD, while the presence of Carbon reduces initial acceptor removal both for Gallium and Boron doping. Boron low-diffusion shows a higher radiation resistance than that of standard Boron implant, indicating a dependence of the initial acceptor removal mechanism upon the implant width. This study also demonstrates that proton irradiation is at least twice more effective in producing initial acceptor removal, making proton irradiation far more damaging than neutron irradiation.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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