Simulations of radiation-damaged 3D detectors for the Super-LHC
Simulations of radiation-damaged 3D detectors for the Super-LHC
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DOI：
10.1016/j.nima.2008.03.100
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发表时间：
2008-07
影响因子：
1.4
通讯作者：
D. Pennicard;G. Pellegrini;C. Fleta;R. Bates;V. O’Shea;C. Parkes;N. Tartoni
中科院分区：
文献类型：
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作者：
D. Pennicard;G. Pellegrini;C. Fleta;R. Bates;V. O’Shea;C. Parkes;N. Tartoni
未来的高亮度对撞机，如欧洲核子研究中心的超级大型强子对撞机，将需要能够承受极高辐射损伤的像素探测器。在本文中，模拟了各种三维探测器结构在高达1×10161MeV-neq/cm2的辐射损伤下的性能。仿真结果表明，由于耗尽距离小，三维探测器比平面探测器具有更高的收集效率和更低的耗尽电压。在设计具有大像素尺寸的3D探测器时，例如ATLAS传感器，可以采用不同的电极柱布局。由于电极间距较大，每像素使用少量的n+读出电极会导致更高的耗尽电压和更低的收集效率。相反，使用更多的电极会增加电极柱占用的不敏感体积和电容噪声。总体而言，1×10161MeV-neq/cm2损伤后的最佳性能是通过每像素使用4-6个n+电极来实现的。
Future high-luminosity colliders, such as the super-LHC at CERN, will require pixel detectors capable of withstanding extremely high radiation damage. In this article, the performances of various 3D detector structures are simulated with up to 1×10161MeV-neq/cm2radiation damage. The simulations show that 3D detectors have higher collection efficiency and lower depletion voltages than planar detectors due to their small depletion distance. When designing a 3D detector with a large pixel size, such as an ATLAS sensor, different electrode column layouts are possible. Using a small number of n+ readout electrodes per pixel leads to higher depletion voltages and lower collection efficiency, due to the larger electrode spacing. Conversely, using more electrodes increases both the insensitive volume occupied by the electrode columns and the capacitive noise. Overall, the best performance after 1×10161MeV-neq/cm2damage is achieved by using 4–6 n+ electrodes per pixel.