A CMS luminosity monitor using single-crystal CVD diamond pixel detectors

E. Bartz, J. Doroshenko, V. Halyo, B. Harrop, D. A. Hits, A. MacPherson, D. Marlow, L. Perera, S. Schnetzer, R. Stone

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4 Scopus citations


The Pixel Luminosity Telescope (PLT) is an innovative luminosity monitor which is planned as an upgrade for the CMS detector at the LHC. It uses pixelated single-crystal diamonds as the active sensor material bumpbonded to standard CMS pixel readout electronics. The PLT makes use of a presently unused feature of the pixel readout chip which was designed to provide a hit-over-threshold signal to a hardware trigger processor. This feature will produce a bunch crossing (25 ns) 'hit' signal that can form the basis of luminosity information at the hardware level. We will report on the first successful use of this 'Fast-Or' signal to self-trigger on beta particles from a source using a diamond pixel detector. Expected performance of the PLT based on Pythia simulations is also detailed.

Original languageEnglish (US)
Article numberP04015
JournalJournal of Instrumentation
Issue number4
StatePublished - 2009

All Science Journal Classification (ASJC) codes

  • Mathematical Physics
  • Instrumentation


  • Large detector systems for particle and astroparticle physics
  • Particle tracking detectors

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    Bartz, E., Doroshenko, J., Halyo, V., Harrop, B., Hits, D. A., MacPherson, A., Marlow, D., Perera, L., Schnetzer, S., & Stone, R. (2009). A CMS luminosity monitor using single-crystal CVD diamond pixel detectors. Journal of Instrumentation, 4(4), [P04015]. https://doi.org/10.1088/1748-0221/4/04/P04015