3D diamond detector technology and radiation hardness studies

从高能物理实验的位置敏感探测器到放射治疗的剂量测定，在当前和未来的实验和应用中，对粒子探测器的要求越来越高。金刚石作为一种材料，由于与传统硅相比具有更高的原子键强度，因此本质上更不易辐射。该项目旨在开发一种新型粒子探测器技术，该技术基于金刚石作为探测器材料和石墨线形式的大块电极，以达到超高的辐射容忍度。体内电极的概念先前已在硅探测器中部署，并已被证明可以将辐射硬度提高一个数量级。由于辐射硬度的增加是由于电极的几何排列而与材料无关，因此同样的原理也适用于金刚石。因此，这将导致提供粒子探测器的技术具有前所未有的辐射硬度，有利于STFC路线图中的关键项目，即粒子物理领域的能量前沿实验，以及用于癌症治疗的放射治疗领域的诊断设备。该项目的成功将通过证明3D钻石探测器可以在可靠的过程中制造，并且辐射硬度符合预期来证明。

The requirements for particle detectors in current and future experiments and applications, from position sensitive detectors for high energy physics experiments to dosimetry for radiation therapy, become increasingly demanding. Diamond as a material is intrinsically radiation harder due to the higher atomic bonding strength compared to conventional Silicon. The project aims to develop a novel particle detector technology that is based on diamond as a detector material and in-bulk electrodes in the form of graphitic wires to reach ultra-high levels of radiation tolerance. The concept of in-bulk electrodes has been deployed previously in Silicon detectors and has proven to raise the radiation hardness by one order of magnitude. Since the increase in radiation hardness is due to the geometrical arrangement of electrodes and independent of the material, the same principle is applicable to diamond. This will consequently lead to a technology providing particle detectors with unprecedented radiation hardness, benefitting key projects in the STFC roadmap, namely in the areas of Particle Physics for experiments at the energy frontier, and for diagnostic devices in the area of radiation therapy for cancer treatment. The success of the project will be demonstrated by the proof that 3D diamond detectors can be made in a reliable process and that the radiation hardness meets the expectations.