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

LHCb VELO upgrade

Sep 15, 2021, 9:20 AM
Teaching and Learning Building (University of Birmingham)

Teaching and Learning Building

University of Birmingham

Edgbaston Campus University of Birmingham B15 2TT UK
talk Advances in Pixel Detectors and Integration Technologies Advances in Pixel Detectors and Integration Technologies I


Kazuyoshi Carvalho Akiba (Nikhef)


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.

Your name Kazu Akiba
Institute Nikhef

Primary authors

Presentation materials