Radiation hardness tests of highly irradiated full-3D sensors

详细信息    查看全文

• 作者：Iain Haughton ; Cinzia DaVia ; Stephen Watts
• 关键词：Full-3D silicon ; Infra-red laser ; High luminosity LHC ; Irradiation ; Signal efficiency
• 刊名：Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
• 出版年：2016
• 出版时间：11 January 2016
• 年：2016
• 卷：806
• 期：Complete
• 页码：425-431
• 全文大小：2472 K

文摘

Several full-3D silicon sensors (with column electrodes going fully through the bulk) were irradiated up to a fluence of (2.14±0.18)×10¹⁶ n_eq cm⁻². An infra-red laser was used to induce a homogeneous signal within each sensor׳s bulk. The signal degradation, measured as a signal efficiency (signal after irradiation normalised to its value before irradiation) was determined for each fluence. The experimental set-up allowed for monitoring of the beam spot diameter, position and reflection intensity on the sensor׳s surface. Corrections, dependent on the measured reflection intensity, were made when calculating the signal efficiency. The sensor irradiated to the highest fluence showed a signal efficiency of (50±5)%$(50\pm 5)\%$.