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SUMMARY:Hybrid pixel detectors - from hunting the Higgs Boson to medical X
 -ray imaging - Dr Michael Campbell (CERN)
DTSTART:20150223T160000Z
DTEND:20150223T170000Z
UID:TALK58020@talks.cam.ac.uk
CONTACT:CAPE office
DESCRIPTION:Abstract:\nHybrid pixel detectors were developed to equip the 
 inner layers of the enormous detectors at CERN’s Large Hadron Collider. 
  The basic building block of these detectors is a monolithic matrix of ful
 ly depleted semiconductor diodes connected by high density bump bonding to
  equally segmented readout chips.  In each ASIC readout channel every part
 icle which deposits enough charge in the detector element is detected and 
 assigned to a particular bunch crossing of the LHC beam.  The extremely hi
 gh threshold to noise ratios which are obtained in such systems produce al
 most noise-free particle images even at very high frame rates.  The same d
 etection mechanism can be applied to X-rays and\, as each X-ray photon is 
 detected individually\, its energy can be measured and spectroscopic or 
 ‘colour’ X-ray images produced.\nThis presentation will cover the basi
 c concepts of ASIC design for such detectors and recount how the transitio
 n from High Energy Physics to X-ray imaging was made.  Access to very deep
  sub-micron CMOS has allowed the implementation of sophisticated on-pixel 
 front-end architectures designed to overcome some of the inherent limitati
 ons in the detection process.\n\nEveryone is welcome.  \n\nTea\, coffee an
 d biscuits will be available from 3:45pm\n
LOCATION:Engineering Department - Lecture Room - LR0\, Baker Building
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