Evaluation of KEK n-in-p planar pixel sensor structures for very high radiation environments with testbeam

• DOI: 10.1016/j.nima.2014.05.092
• Publication Date: 2014-05-29T03:00:41Z
• Authors: K. Motohashi; T. Kubota; K. Nakamura; R. Hori; C. Gallrapp; Y. Unno; O. Jinnouchi; S. Altenheiner; Y. Arai; M. Hagihara; M. Backhaus; M. Bomben; D. Forshaw; M. George; K. Hanagaki; K. Hara; M. Hirose; Y. Ikegami; N. Ishijima; J. Jentzsch; K. Kawagoe; N. Kimura; T. Kono; A. Macchiolo; R. Nishimura; S. Oda; H. Otono; I. Rubinskiy; A. Rummler; R. Takashima; Y. Takubo; J.J. Teoh; S. Terada; K. Todome; J. Tojo; J. Usui; P. Weigell; J. Weingarten; D. Yamaguchi; K. Yorita
• Keywords: Radiation hardness; pi: momentum; detector: performance; CERN Lab; irradiation; Pixel detector; CERN SPS; ATLAS; N-in-p; 530; proton synchrotron; 7. Clean energy; 01 natural sciences; CERN LHC Coll: upgrade; 0103 physical sciences; detector: pixel; pi: beam; info:eu-repo/classification/ddc/530; radiation: damage

Various structures for n-in-p planar pixel sensors have been developed at KEK in order to cope with the huge particle fluence in the upcoming LHC upgrades. Performances of the sensors with different structures have been evaluated with testbeam. The n-in-p devices were connected by bump-bonding to the ATLAS Pixel front-end chip (FE-I4A) and characterized before and after the irradiation to 1×10 16 1 MeV neq/cm2 . Results of measurements with 120 GeV/c momentum pion beam at the CERN Super Proton Synchrotron (SPS) in September 2012 are presented.<br/>9th International "Hiroshima" Symposium on Development and Application of Semiconductor Tracking Detectors, HSTD-9 2013, Hiroshima, Japan, 2 Sep 2013 - 5 Sep 2013 ; Nuclear instruments & methods in physics research / A 765, 125 - 129(2014). doi:10.1016/j.nima.2014.05.092<br/>Published by North-Holland Publ. Co., Amsterdam<br/>