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Status and Plan for The Upgrade of The CMS Pixel Detector

The silicon pixel detector is the innermost component of the CMS tracking system and plays a crucial role in the all-silicon CMS tracker. While the current pixel tracker is designed for and performing well at an instantaneous luminosity of up to $\rm 1\times 10^{34}cm^{-2}s^{-1}$, it can no longer b...

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Autor principal: Lu, Rong-Shyang
Lenguaje:eng
Publicado: 2014
Materias:
Acceso en línea:https://dx.doi.org/10.1016/j.nuclphysbps.2015.09.161
http://cds.cern.ch/record/1955407
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author Lu, Rong-Shyang
author_facet Lu, Rong-Shyang
author_sort Lu, Rong-Shyang
collection CERN
description The silicon pixel detector is the innermost component of the CMS tracking system and plays a crucial role in the all-silicon CMS tracker. While the current pixel tracker is designed for and performing well at an instantaneous luminosity of up to $\rm 1\times 10^{34}cm^{-2}s^{-1}$, it can no longer be operated efficiently at significantly higher values. Based on the strong performance of the LHC accelerator, it is anticipated that peak luminosities of two times the design luminosity are likely to be reached before 2018 and perhaps significantly exceeded in the running period until 2022, referred to as LHC Run 3. Therefore, an upgraded pixel detector, referred to as the phase 1 upgrade, is planned for the year-end technical stop in 2016. With a new pixel readout chip (ROC), an additional fourth layer, two additional endcap disks, and a significantly reduced material budget the upgraded pixel detector will be able to sustain the efficiency of the pixel tracker at the increased requirements imposed by high luminosities and pile-up. The main new features of the upgraded pixel detector will be an ultra-light mechanical design, a digital readout chip with higher rate capability and a new cooling system. These and other design improvements, along with results of Monte Carlo simulation studies for the expected performance of the new pixel detector, will be discussed and compared to those of the current CMS detector.
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spelling cern-19554072019-09-30T06:29:59Zdoi:10.1016/j.nuclphysbps.2015.09.161http://cds.cern.ch/record/1955407engLu, Rong-ShyangStatus and Plan for The Upgrade of The CMS Pixel DetectorDetectors and Experimental TechniquesThe silicon pixel detector is the innermost component of the CMS tracking system and plays a crucial role in the all-silicon CMS tracker. While the current pixel tracker is designed for and performing well at an instantaneous luminosity of up to $\rm 1\times 10^{34}cm^{-2}s^{-1}$, it can no longer be operated efficiently at significantly higher values. Based on the strong performance of the LHC accelerator, it is anticipated that peak luminosities of two times the design luminosity are likely to be reached before 2018 and perhaps significantly exceeded in the running period until 2022, referred to as LHC Run 3. Therefore, an upgraded pixel detector, referred to as the phase 1 upgrade, is planned for the year-end technical stop in 2016. With a new pixel readout chip (ROC), an additional fourth layer, two additional endcap disks, and a significantly reduced material budget the upgraded pixel detector will be able to sustain the efficiency of the pixel tracker at the increased requirements imposed by high luminosities and pile-up. The main new features of the upgraded pixel detector will be an ultra-light mechanical design, a digital readout chip with higher rate capability and a new cooling system. These and other design improvements, along with results of Monte Carlo simulation studies for the expected performance of the new pixel detector, will be discussed and compared to those of the current CMS detector.CMS-CR-2014-275oai:cds.cern.ch:19554072014-10-07
spellingShingle Detectors and Experimental Techniques
Lu, Rong-Shyang
Status and Plan for The Upgrade of The CMS Pixel Detector
title Status and Plan for The Upgrade of The CMS Pixel Detector
title_full Status and Plan for The Upgrade of The CMS Pixel Detector
title_fullStr Status and Plan for The Upgrade of The CMS Pixel Detector
title_full_unstemmed Status and Plan for The Upgrade of The CMS Pixel Detector
title_short Status and Plan for The Upgrade of The CMS Pixel Detector
title_sort status and plan for the upgrade of the cms pixel detector
topic Detectors and Experimental Techniques
url https://dx.doi.org/10.1016/j.nuclphysbps.2015.09.161
http://cds.cern.ch/record/1955407
work_keys_str_mv AT lurongshyang statusandplanfortheupgradeofthecmspixeldetector