Sep 12 – 17, 2021
University of Birmingham
Europe/London timezone

Construction and Operation of the CMS Phase-1 Silicon Pixel Detector at the LHC

Sep 15, 2021, 3:50 PM
Teaching and Learning Building (University of Birmingham)

Teaching and Learning Building

University of Birmingham

Edgbaston Campus University of Birmingham B15 2TT UK
poster Detectors for High Radiation and Extreme Environments Poster Session 3 (Applications in Particle Physics)


Somnath Choudhury (Indian Institute of Science (IN))


The CMS Phase-1 Pixel Detector was designed to cope with an instantaneous luminosity 2 x 10^34 cm-2 s-1 and 25 ns bunch spacing with very small efficiency loss. The upgraded detector has 124M channels that features a 4-hit coverage in the tracking volume. DC-DC converters were used to deliver more power to the detector without the need of replacing the cable plant. CO2 based cooling was implemented and carbon based structures were used to reduce material in the tracking volume. The data acquisition system was upgraded to accept higher event rates and a digital data format from the detector front-ends. The detector was installed in early 2017 and has been successfully operated since then. In this presentation, the construction and assembly, operational experience and the performance of the pixel detector at the LHC will be discussed.

Institute Indian Institute of Science, Bangalore
Your name Somnath Choudhury
Nationality India
Title Dr.

Primary author

Somnath Choudhury (Indian Institute of Science (IN))

Presentation materials