The upgraded Pixel Detector of the ATLAS experiment for Run-2 at the Large Hadron Collider

被引：1

作者：

Mullier, G. ^{[1
]}

机构：

[1] Univ Bern, AEC LHEP, Sidlerstr 5, CH-3012 Bern, Switzerland

来源：

JOURNAL OF INSTRUMENTATION | 2016年 / 11卷

基金：

美国国家科学基金会;

关键词：

Overall mechanics design (support structures and materials; vibration analysis etc); Detector design and construction technologies and materials; Radiation-hard detectors; Radiation-hard electronics;

D O I：

10.1088/1748-0221/11/02/C02061

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

The Pixel Detector of the ATLAS experiment has shown excellent performance during the whole Run-1 of the Large Hadron Collider (LHC). Taking advantage of Long Shutdown 1 (LS1) during 2014/2015, the Pixel Detector was brought to surface to equip it with new service panels and to repair modules. The Insertable B-Layer (IBL), a fourth layer of pixel sensors, was installed in-between the existing Pixel Detector and a new beam-pipe at a radius of 3.3 cm. To cope with the high radiation and increased pixel occupancy due to the proximity to the interaction point, two different silicon sensor technologies (planar and 3D) were used and a new readout chip has been designed with CMOS 130 nm technology with larger area, smaller pixel size and faster readout capability. Dedicated design features in combination with a new composite material were considered and used in order to reduce the material budget of the support structure while keeping the optimal thermo-mechanical performance. An overview of the lessons learned during the IBL project is presented, focusing on the challenges and highlighting the issues met during the production, integration, installation and commissioning phases of the detector. Early performance tests using cosmic and beam data are also presented.

引用

页数：7

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