Radiation hardness of three-dimensional polycrystalline diamond detectors
Radiation hardness of three-dimensional polycrystalline diamond detectors
复制标题
DOI：
10.1063/1.4921116
复制
发表时间：
2015-05-11
影响因子：
4
通讯作者：
Sciortino, Silvio
中科院分区：
文献类型：
--
作者：
Lagomarsino, Stefano;Bellini, Marco;Sciortino, Silvio
粒子检测中的三维概念基于垂直于固态辐射传感器表面的柱状电极的制造。它允许通过降低必要的偏置电压并缩短材料内部的电荷载流子路径来改善材料的抗辐射特性。如果将这一概念应用于长期以来公认的极其抗辐射的材料（如金刚石），则有望为实现具有前所未有的性能的探测器铺平道路。我们制造了传统的三维多晶金刚石探测器，并在中子损伤前后对其进行了测试，最高可达1.2 x 10(16) cm(-2)、1 MeV当量中子注量。我们发现，在实验中最高的中子损伤下，三维探测器收集到的信号比传统平面探测器高出三倍。 (C) 2015 AIP 出版有限责任公司。
The three-dimensional concept in particle detection is based on the fabrication of columnar electrodes perpendicular to the surface of a solid state radiation sensor. It permits to improve the radiation resistance characteristics of a material by lowering the necessary bias voltage and shortening the charge carrier path inside the material. If applied to a long-recognized exceptionally radiation-hard material like diamond, this concept promises to pave the way to the realization of detectors of unprecedented performances. We fabricated conventional and three-dimensional polycrystalline diamond detectors, and tested them before and after neutron damage up to 1.2 x 10(16) cm(-2), 1 MeV-equivalent neutron fluence. We found that the signal collected by the three-dimensional detectors is up to three times higher than that of the conventional planar ones, at the highest neutron damage ever experimented. (C) 2015 AIP Publishing LLC.