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Uniformity of response of the LHC1 large area pixel detector system CERN Detector R&D Collaboration RD19 and Experiment WA97

  • E. Cantatore
  • , F. Antinori
  • , K. H. Becks
  • , H. Beker
  • , E. J. Buis
  • , P. Burger
  • , M. Campbell
  • , L. Casagrande
  • , M. G. Catanesi
  • , E. Chesi
  • , S. D'Auria
  • , C. DaVià
  • , D. Di Bari
  • , S. Di Liberto
  • , T. Gys
  • , E. H.M. Heijne
  • , G. Humpston
  • , A. Jacholkowski
  • , J. J. Jæger
  • , W. Klempt
  • J. Kubasta, R. Leitner, V. Lenti, M. Luptak, P. Martinengo, M. A. Mazzoni, G. Meddeler, F. Meddi, P. Middelkamp, B. Mikulec, M. Morando, F. Pellegrini, S. Pospisil, E. Quercigh, J. Ridky, I. Ropotar, K. Safarik, S. Saladino, L. Scharfetter, G. Segato, S. Simone, K. Smith, W. Snoeys, C. Sobczynski, G. Tomasicchio, V. Vrba
  • CERN
  • National Institute for Subatomic Physics
  • Canberra Semiconductor NV
  • Laboratório de Instrumentação e Física Experimental de Partículas
  • GEC Marconi (Caswell)
  • Collège de France
  • Group Praha
  • Slovak Academy of Sciences
  • University of Glasgow
  • University of Warsaw

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

The uniformity of discriminator threshold and the precision of internal delay have been studied on single 'Omega3/LHC1' pixel readout chips and on arrays of 24 chips containing 48768 active pixels. On single chips we measured a threshold variation of 400e- r.m.s. for a mean threshold setting of 4000e-. The internal delay distribution shows a standard deviation of 6 ns on a single chip and 16 ns on the large arrays, after applying a 3-bit delay adjustment. These results, obtained using an electrical stimulus, were confirmed by tests in a beam of high-energy particles.

Original languageEnglish
Pages (from-to)119-128
Number of pages10
JournalNuclear Inst. and Methods in Physics Research, A
Volume409
Issue number1-3
DOIs
StatePublished - May 21 1998

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