論文

査読有り
2013年1月21日

Evaluation of novel KEK/HPK n-in-p pixel sensors for ATLAS upgrade with testbeam

Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
  • R. Nagai
  • ,
  • J. Idárraga
  • ,
  • C. Gallrapp
  • ,
  • Y. Unno
  • ,
  • A. Lounis
  • ,
  • O. Jinnouchi
  • ,
  • Y. Takubo
  • ,
  • K. Hanagaki
  • ,
  • K. Hara
  • ,
  • Y. Ikegami
  • ,
  • N. Kimura
  • ,
  • K. Nagai
  • ,
  • I. Nakano
  • ,
  • R. Takashima
  • ,
  • S. Terada
  • ,
  • J. Tojo
  • ,
  • K. Yorita
  • ,
  • S. Altenheiner
  • ,
  • M. Backhaus
  • ,
  • M. Bomben
  • ,
  • D. Forshaw
  • ,
  • M. George
  • ,
  • J. Janssen
  • ,
  • J. Jentzsch
  • ,
  • T. Lapsien
  • ,
  • A. La Rosa
  • ,
  • A. MacChiolo
  • ,
  • G. Marchiori
  • ,
  • C. Nellist
  • ,
  • I. Rubinsky
  • ,
  • A. Rummler
  • ,
  • G. Troska
  • ,
  • P. Weigell
  • ,
  • J. Weingarten

699
開始ページ
78
終了ページ
83
記述言語
英語
掲載種別
研究論文(国際会議プロシーディングス)
DOI
10.1016/j.nima.2012.04.081

A new type of n-in-p planar pixel sensors have been developed at KEK/HPK in order to cope with the maximum particle fluence of 1-3×1016 1 MeV equivalent neutrons per square centimeter (neq/cm2) in the upcoming LHC upgrades. Four n-in-p devices were connected by bump-bonding to the new ATLAS Pixel front-end chip (FE-I4A) and characterized before and after the irradiation to 2×1015 neq/cm2. These planar sensors are 150μm thick, using biasing structures made out of polysilicon or punch-through dot and isolation structures of common or individual p-stop. Results of measurements with radioactive 90Sr source and with a 120 GeV/c momentum pion beam at the CERN Super Proton Synchrotron (SPS) are presented. The common p-stop isolation structure shows a better performance than the individual p-stop design, after the irradiation. The flat distribution of the collected charge in the depth direction after the irradiation implies that the effect of charge trapping is small, at the fluence, with the bias voltage well above the full depletion voltage. © 2012 Elsevier B.V.

リンク情報
DOI
https://doi.org/10.1016/j.nima.2012.04.081
URL
http://www.sciencedirect.com/science/article/pii/S0168900212004603
URL
http://orcid.org/0000-0001-7503-2777

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