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Title: Performance of thin planar n-on-p silicon pixels after HL-LHC radiation fluences

Journal Article · · Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment
 [1];  [1];  [1];  [1];  [1];  [1];  [1];  [2];  [3];  [4];  [5];  [6];  [7];  [8];  [2];  [2]
  1. Paris-Sorbonne Univ., Paris (France). CNRS National Institute of Nuclear and Particle Physics (IN2P3)
  2. Fondazione Bruno Kessler Center for Materials and Microsystems (FBK-CMM), Povo di Trento (Italy); Trento Inst. for Fundamental Physics and Applications (TIFPA INFN), Trento (Italy)
  3. Italian National Inst. of Nuclear Physics (INFN), Trieste (Italy)
  4. Italian National Inst. of Nuclear Physics (INFN), Genova (Italy)
  5. Trento Inst. for Fundamental Physics and Applications (TIFPA INFN), Trento (Italy); Univ. of Trento, Trento (Italy)
  6. Brookhaven National Laboratory (BNL), Upton, NY (United States)
  7. Italian National Inst. of Nuclear Physics (INFN), Firenze (Italy)
  8. Univ. of Pisa, Pisa (Italy). Italian National Inst. of Nuclear Physics (INFN)
+ Show Author Affiliations

The tracking detector of ATLAS, one of the experiments at the Large Hadron Collider (LHC), will be upgraded in 2024–2026 to cope with the challenging environment conditions of the High Luminosity LHC (HL-LHC). The LPNHE, in collaboration with FBK and INFN, has produced 130 μm thick n-on-p silicon pixel sensors which can withstand the expected large particle fluences at HL-LHC, while delivering data at high rate with excellent hit efficiency. Such sensors were tested in beam before and after irradiation both at CERN-SPS and at DESY, and their performance are presented in this paper. Here, beam test data indicate that these detectors are suited for all the layers where planar sensors are foreseen in the future ATLAS tracker: hit-efficiency is greater than 97% for fluences of Φ≲7x1015 neq/cm2 and module power consumption is within the specified limits. Additionally, at a fluence of Φ=1.3x1016 neq /cm2, hit-efficiency is still as high as 88% and charge collection efficiency is about 30%.

Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
Grant/Contract Number:
SC0012704
OSTI ID:
1507109
Report Number(s):
BNL--211542-2019-JAAM
Journal Information:
Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment, Journal Name: Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment Journal Issue: C Vol. 927; ISSN 0168-9002
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

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Radiation-tolerant Silicon Detectors for the LHC Phase-II Upgrade and Beyond: Review of RD50 Activities conference April 2020

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Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
HL-LHC
LHC
Radiation hardness
Silicon radiation detectors