two gamma event

High Energy


High Energy Seminar

Description High Energy Seminar
Speaker: Mia Liu (FNAL)
Title: The Phase 1 Upgraded FPIX in CMS
Host: John Conway
Room: 285
Abstract:The task of the CMS pixel detector is to provide high-resolution 3D space points required for charged particle track pattern recognition and bottom quark tagging. Situated closest to the interaction point just outside the beam pipe, the pixel detector has to be able to cope with the high data rates and radiation doses. The Phase-0 pixel detector was designed for the LHC nominal luminosity of 10^34 cm−2 s−1 and performed excellently during Run 1 and early Run 2 data-taking in 2015 and 2016. However, the LHC has exceeded its design luminosity in 2016 and the phase-0 detector suffered from dynamical inefficiencies, resulting in data loss and degraded tracking and vertex reconstruction performance. To cope with the more challenging environment, CMS planned a phase-1 upgrade of the pixel detector, which is expected to perform well until the High Luminosity LHC. The new forward pixel detector was constructed by US CMS institutions during 2015-2016 and installed in CMS in early 2017. The detector was quickly commissioned and transitioned smoothly to data-taking. In this talk, I will discuss the improved detector design as well as experiences from constructing and commissioning the forward part of the detector. I will also discuss the DC-DC converter failures observed last year and where we stand today in understanding this issue.
Date Tue, May 8, 2018
Time 9:10am-10:10am PDT
Duration 1 hour
Access Public
Created by High-Energy Seminars
Updated Wed, April 25, 2018 6:27am PDT
Send Reminder Yes  -  1 day 4 hour 0 minutes before start

Recent changes RSS feed Creative Commons License Powered by PHP