PSD12: The 12th International Conference on Position Sensitive Detectors

LHCb VELO upgrade

15 Sept 2021, 09:20

15m

Teaching and Learning Building (University of Birmingham)

talk Advances in Pixel Detectors and Integration Technologies Advances in Pixel Detectors and Integration Technologies I

Speaker

Kazuyoshi Carvalho Akiba (Nikhef)

Description

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.

Presentation materials

PSD LHCb VELO upgrade 15th September.pdf