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Short ( and incomplete) characteristics of CVD diamond detectors

Diamond as a detector material low dielectric constant low capacity low noise good heat conductivity ( 5 x higher than Cu ) large band gap of 5.5 eV small signal (< half of a Si of similar size) high charge carrier velocity saturation fast pulse response time

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Short ( and incomplete) characteristics of CVD diamond detectors

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  1. Diamond as a detector material low dielectric constant low capacity low noise good heat conductivity ( 5 x higher than Cu ) large band gap of 5.5 eV small signal (< half of a Si of similar size) high charge carrier velocity saturation fast pulse response time Diamond Crystal production chemical vapour deposition (CVD) commercial production polycrystaline diamonds (PCD) thickness 0.5-500mm max size ~ 5x5cm2 price ? (100 euro/det.) single crystal diamond (SCD) smaller ( 4x4 mm2) better performance (energy resolution) more expensive (5xPCD) Diamond detectors performance very fast timing pulse risetime: 200 ps width: 2ns (PCD) 5ns (SCD) operating voltage 1 V/mm radiation hardness -Tests with 2x1015 p/cm2 did not show any significant deterioration of a sig./noise -pumping effect (PCD) : improvement with increasing dose position resolution below 10mm can be achieved with strip detectors X and Y efficiency 70%PCD-100% PCD Diamonds as TOF detectors tests with 1GeV/u U beam resulted in TOF of s=20 ps Short ( and incomplete) characteristics of CVD diamond detectors Cr-Au foil ~0.1mm

  2. http://rd42.web.cern.ch/RD42/ http://www-norhdia.gsi.de INFN-MI, Milano, Italy Electronics, ToF-detectorsCEA-Saclay, France diamond growth, sensor modelling DESY-Zeuthen, Germany E-, ToF-detectors, modelling, electronics GSI, Darmstadt, Germany E-, ToF-dectors, irradiations, detector characterisation, micro-beam mappingIFIN-HH, Bucharest, Romania Electronics, ToF-detectors, modellingCERN, Geneva, Switzerland Detector characterisation Karlsruhe University, Germany Detector characterization, irradiations IJS, Ljubljana, Slovenia Irradiations VERA Laboratory, Vienna, Austria E-detectors Wits University, Johannesburg, South Africa Diamond substratesKurchatov Institute, Moscow, Russia ESRF Grenoble, France sample characterisationAIST, Tsukuba, Japan Industrial partners: Element six, Ascot, Berkshire, UK ideas Coordinator: E. Berdermann (GSI)

  3. News from I3HP & NoRHDia - Eleni Berdermann

  4. But for PCD much worst ! • News from I3HP & NoRHDia - Eleni Berdermann

  5. SC-Diamond for ToF measurements with relativistic particles: • First beam test with 27Al ions of 2 GeV/amu - Mladen Kis

  6. SC-Diamond for ToF measurements with relativistic particles: • First beam test with 27Al ions of 2 GeV/amu - Mladen Kis

  7. But at 5 MeV/u a middle-light (A ~20) HI beam stops in ~ 50 mm of a diamond layer

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