Abstract

A new pixel detector for the CMS experiment was built in order to cope with the instantaneous luminosities anticipated for the Phase I Upgrade of the LHC. The new CMS pixel detector provides four-hit tracking with a reduced material budget as well as new cooling and powering schemes. A new front-end readout chip mitigates buffering and bandwidth limitations, and allows operation at low comparator thresholds. In this paper, comprehensive test beam studies are presented, which have been conducted to verify the design and to quantify the performance of the new detector assemblies in terms of tracking efficiency and spatial resolution. Under optimal conditions, the tracking efficiency is (99.95 +/- 0.05) %, while the intrinsic spatial resolutions are (4.80 +/- 0.25) mu m and (7.99 +/- 0.21) mu m along the 100 mu m and 150 mu m pixel pitch, respectively. The findings are compared to a detailed Monte Carlo simulation of the pixel detector and good agreement is found.

Autore Pugliese

• Selvaggi Giovanna , De Palma Mauro , My Salvatore

Tutti gli autori

• SELVAGGI G.;DE PALMA M.;MY S.

Titolo volume/Rivista

Non Disponibile

Anno di pubblicazione

2017

ISSN

1748-0221

ISBN

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Numero di citazioni Wos

Nessuna citazione

Ultimo Aggiornamento Citazioni

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Numero di citazioni Scopus

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Settori ERC

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Codici ASJC

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