LHCb experiment: Difference between revisions

Revision as of 11:32, 19 September 2013

Revision as of 10:40, 10 April 2014

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The vertex detector (known as the vertex locator or VELO) is built around the proton interaction region.<ref>[http://lhcb-vd.web.cern.ch/lhcb-vd/default.htm], The LHCb VELO (from the VELO group)</ref><ref>[http://lhcb-public.web.cern.ch/lhcb-public/en/Detector/VELO-en.html], VELO Public Pages</ref> It is used to measure the particle trajectories close to the interaction point in order to precisely separate primary and secondary vertices.

The detector operates at {{convert|7|mm}} from the LHC beam. This implies an enormous flux of particles; The VELO has been designed to withstand integrated fluences of more than 10¹⁴&nbsp;p/cm² per year for a period of about three years. The detector operates in [[vacuum]] and is cooled to approximately {{convert|-25|C|F}} using a biphase [[carbon dioxide|CO₂]] system. The data of the VELO detector are amplified and read out by the [[Beetle (ASIC)|Beetle ASIC]].

=== RICH1 ===