Characterisation of single crystal CVD diamond particle detectors for hadron physics experiments
Characterisation of single crystal CVD diamond particle detectors for hadron physics experiments
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用于强子物理实验的单晶 CVD 金刚石粒子探测器的表征
DOI：
10.1002/pssa.200561929
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发表时间：
2005
期刊：
影响因子：
--
通讯作者：
B. Marczewska
中科院分区：
文献类型：
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作者：
M. Pomorski;E. Berdermann;M. Ciobanu;A. Martemyianov;P. Moritz;M. Rebisz;B. Marczewska
本文报道了一种用于核物理实验中重离子粒子识别和最小电离粒子定时的单晶CVD金刚石探测器的表征结果。电荷收集效率约为100%，这是多晶CVD -金刚石探测器所无法达到的。使用混合核素α‐源实现了20 keV （ΔE/E≈0.004）的能量分辨率，这与硅引脚二极管探测器的能量分辨率相当。利用低阻抗宽带电子技术和ToF技术，空穴或电子分别在金刚石体内部漂移，估计了两种载流子的饱和速度、迁移率和寿命。此外，还讨论了新材料与聚晶金刚石的热释光性能。单晶CVD金刚石的俘获中心密度要低得多。（©2005 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim）
Characterisation results from a single‐crystal CVD diamond detector are reported, which is under development for heavy‐ion particle identification and minimum‐ionizing particles timing in nuclear physics experiments. The charge collection efficiency is about 100%, never obtained from polycrystalline CVD‐diamond detectors. An energy resolution of 20 keV (ΔE/E ≈ 0.004) is achieved using a mixed nuclide α‐source, which is comparable to the energy resolution of silicon pin diode detectors. Using low impedance broadband electronics and a ToF technique, where holes or electrons drift separately inside the diamond bulk, the saturation velocity, mobility and lifetime of both charge carriers are estimated. In addition the thermoluminescent properties of the new material are discussed in comparison to polycrystalline diamond. A much lower density of trapping centres has been found for single‐crystal CVD diamond. (© 2005 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)