学术报告（4月18日）

报告摘要：像素探测器拥有优异的空间分辨率和迅速的时间响应能力，在各个学科的前沿研究起到越来越重要的作用。本报告作者参与大型强子对撞机（LHC）的ATLAS国际合作组硅像素探测器的研发，并报告该研发最新研发进展。其中包括抗辐照的像素探测器的研发，准皮秒级超快像素探测器的研发。

另外，本报告还探讨基于CMOS的单片集成的像素探测器研发以及在ATLAS升级中的应用。在过去几年，CMOS技术广泛用于数码相机与手机摄像头中。CMOS硅探测器采用工业标准工艺，抛弃传统类型所需的复杂倒装焊等连接方式，性能优异且造价大幅降低，因而逐渐成为国际硅探测器领域的研究热点。

另外，我国科学家提出建造高能环形正负电子对撞机（CEPC），利用干净的正负电子对撞事例更为精确地测量Higgs粒子性质，揭示可能的新物理迹象。这也对径迹探测器提出更高的性能要求。本文也会报道几个针对CEPC的物理要求的像素探测器的研发，包括高分辨与低功耗的像素探测器的研发。

报告人简介：

梁志均，中国科学院高能物理研究所，副研究员。

beat365中国唯一官方网站物理学博士毕业。

从2006年起参与大型强子对撞机（LHC）上的ATLAS实验。

2010-2013年间，在英国牛津大学（University of Oxford) 粒子物理系任博士后，负责ATLAS实验上硅探测器的激光准直，与担任ATLAS电弱物理的召集人。

2014-2015年间，在美国加州大学圣克鲁兹分校物理系任博士后，负责研发ATLAS实验下一代的抗辐照硅探测器的研发。

2016年至今，在中国科学院高能物理研究所任副研究员，负责ATLAS实验下一代的硅探测器的研发与制造。

Abstract: Pixel detector has excellent resolution and fast response time. It becomes more and more important in many field of scientific researches, including chemistry, biology, material physics, and high energy physics …

This seminar will present the progress in silicon tracking detector research and development for ATLAS experiment in Large Hadron collider, including radiation hard silicon sensor and ultra-fast silicon detector which has 30 picosecond response time.

The new development in CMOS-based pixel detector will be discussed as well. CMOS sensor has been widely used in digital camera and cell phone in recent years. It has potential to reduce the cost of pixel detector, and it becomes a hot topic in pixel tracking detector research.

The seminar will also discuss the pixel detector development for application in circular electron-positron collier (CEPC). CEPC is proposed by Chinese high energy community to measure the Higgs boson properties precisely. A high-resolution pixel sensor with low power consumption under development for CEPC application.

Information about Reporter:

Prof. Zhijun Liang, Deputy Researcher at the Institute of High Energy Physics, Chinese Academy of Sciences.

He received his doctorate from the School of Physics at the Sun Yat-sen University.

Since 2006 he participated the ATLAS experiment at the LHC.

2010-2013 he did the postdoctoral research for the particle physics at the Department of Physics, University of Oxford in the UK. He directed the laser alignment of silicon detector for the ATLAS experiment. In addition, he was the convener for Electroweak Physics at the same time.

2014-2015, he did the postdoctoral research at the Department of Physics, UC (University of California) Santa Cruz in the USA. He directed the research of anti-radiation silicon detector for the next generation of ATLAS experiment.

2016 he became the Deputy Researcher at the Institute of High Energy Physics, Chinese Academy of Sciences and directed the research and production of anti-radiation silicon detector for the next generation of ATLAS experiment.