002901956 001__ 2901956
002901956 003__ SzGeCERN
002901956 005__ 20240624210155.0
002901956 0248_ $$aoai:cds.cern.ch:2901956$$pcerncds:FULLTEXT$$pcerncds:CERN:FULLTEXT$$pINIS$$pcerncds:CERN
002901956 037__ $$aCMS-CR-2024-100
002901956 041__ $$aeng
002901956 100__ $$aZuolo, Davide$$iINSPIRE-00660667$$jCCID-809222$$uColorado U.
002901956 245__ $$a3D silicon pixel sensors for the CMS experiment tracker upgrade
002901956 260__ $$c2024
002901956 269__ $$aGeneva$$bCERN$$c12 Jun 2024
002901956 300__ $$a3 p
002901956 520__ $$aThe upgrade program of the CMS experiment in view of the LHC High Luminosity phase (HL-LHC) includes a replacement of the silicon pixel tracker. This is necessary to guarantee the same tracking performance of the current detector under harsher operating conditions, including higher radiation fluences and hit rates. The first layer of the central (barrel) detector will be located at radial distance of 3 cm from the interaction point where the radiation fluence after 7 years of operation will be $1.9\times10^{16}$~n$_{eq}$/cm$^2$. Following an extensive R\ and D program, comprising both laboratory and test beam measurements, 3D sensors will be employed in this layer due to their higher radiation tolerance and lower power consumption after irradiation. The final design of the sensors will be presented, together with the most recent laboratory measurements. The main focus will be on the most recents test beam measurements, before and after irradiation up to $1.5\times10^{16}$~n$_{eq}$/cm$^2$, that proved a hit detection efficiency larger than 96\% at normal incidence with less than 2\% masked pixels, for applied bias voltages larger than 120 V.
002901956 595__ $$aCERN EDS
002901956 65017 $$2SzGeCERN$$aDetectors and Experimental Techniques
002901956 6531_ $$9CMS$$aRadiationHardness
002901956 6531_ $$9CMS$$aTestBeams
002901956 6531_ $$9CMS$$aTracker
002901956 690C_ $$aINTNOTE
002901956 690C_ $$aCERN
002901956 690C_ $$aPUBLCMS
002901956 693__ $$aCERN LHC$$eCMS
002901956 710__ $$5PH
002901956 710__ $$gCMS Collaboration
002901956 8564_ $$82539465$$s647292$$uhttps://cds.cern.ch/record/2901956/files/CR2024_100.pdf
002901956 916__ $$sn$$w202426
002901956 962__ $$b2896953$$nla biodola, isola d'elba20240526
002901956 963__ $$aPUBLIC
002901956 980__ $$aINTNOTECMSPUBL
002901956 980__ $$aConferencePaper
002901956 980__ $$aPREPRINT