The ATLAS Insertable B-Layer: from construction to operation

TL;DR

The ATLAS IBL is a highly radiation-resistant pixel detector layer installed at the LHC, utilizing advanced 3D sensors and CMOS technology, with successful construction, commissioning, and operational deployment within two years.

Contribution

This paper details the design, construction, and operational experience of the first large-scale application of 3D sensors and CMOS 130 nm technology in a high-energy physics detector.

Findings

Successful deployment of 3D sensors in a large-scale detector

Effective operation under high radiation and occupancy conditions

Key challenges and solutions in IBL construction and commissioning

Abstract

The ATLAS Insertable B-Layer (IBL) is the innermost layer of pixel detectors, and was installed in May 2014 at a radius of 3.3 cm from the beam axis, between the existing Pixel detector and a new smaller radius beam-pipe. The new detector, built to cope with high radiation and occupancy, is the first large scale application of 3D sensors and CMOS 130 nm technology. The IBL detector construction was completed within about two years (2012-2014), and the key features and challenges met during the IBL project are presented, as well as its commissioning and operational experience at the LHC.