May 24 – 28, 2021
America/Vancouver timezone

The LHCb VELO Upgrade

May 27, 2021, 6:06 AM
Parallel session talk Experiments: Trackers Experiments: Trackers


Vinicius Franco Lima (University of Liverpool (GB))


The Vertex Locator (VELO), surrounding the interaction region of the LHCb experiment, reconstructs the collision points (primary vertices) and decay vertices of long-lived particles (secondary vertices). The upgraded VELO will be composed of 52 modules placed along the beam axis divided into two retractable halves. The modules will each be equipped with 4 silicon hybrid pixel tiles, each read out with by 3 VeloPix ASICs, glued onto a thin silicon plate with embedded micro-channels that allow the circulation of liquid CO$_2$. The silicon sensors must withstand an integrated fluence of up to 8$\times 10^{15}$ 1 MeV n$_{eq}$/cm$^{2}$, a roughly equivalent dose of 400 MRad. The highest occupancy ASICs will have pixel hit rates of 900 Mhit/s and produce an output data rate of over 15 Gbit/s.

The design of the VELO upgrade will be presented with the results from the latest R\&D and detector construction.

TIPP2020 abstract resubmission? Yes, this would have been presented at TIPP2020.

Primary authors

Kazuyoshi Carvalho Akiba (Nikhef) Paula Collins (CERN) Vinicius Franco Lima (University of Liverpool (GB))

Presentation materials