Characterisation of a semi 3-D sensor coupled to Medipix2
- 作者：Lukas Tlustos ; Juha Kalliopuska ; Rafael Ballabriga ; Michael Campbell ; Simo Erä ; nen ; Xavier Llopart
- 关键词：Silicon radiation detectors ; 3D detectors
- 刊名：Nuclear Instruments and Methods in Physics Research Section A ; Accelerators ; Spectrometers ; Detectors and Associated Equipment
- 出版年：2007
- 期刊代码：41_01689002
- 类别：ph
- 出版时间：1 October 2007
- 卷：580
- 期：2
- 页码：897-901
- 文件大小：830 K
摘要
A 
thick semi-3D Si sensor has been characterised after bump-bonding to a Medipix2 read-out chip. The bonding quality measured using a 90Sr-source was found to be excellent (>99.9%). Comparative measurements with respect to a standard planar 
Si sensor comprising IV-curves, depletion voltage and energy resolution have been performed. IV-curves and depletion voltages correspond to the values expected from the sensor geometry. The depletion voltage of the semi-3D sensor is significantly lower than the one of the planar sensor. The energy resolution of the semi-3D device has been found to be lower. The uniformity of the pixel response has been measured using a pulsed 1060 nm laser.