CVD diamond alpha-particle detectors with different electrode geometry
نویسندگان
چکیده
منابع مشابه
Characterisation of Single-Crystal CVD-Diamond Detectors
Recently, the quality of intrinsic CVD Diamond (CVD-D) has tremendously been improved. The replacement of the previous used silicon substrates for growth by ultra-pure HPHT Single-Crystal (SC) {100}-oriented diamond provides homo-epitaxial grown material almost free of structural defects. Nevertheless, all substrates nominally {100}oriented show a certain amount of off-angle declination from th...
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The suitability of single-crystal diamond made by chemical vapour deposition for particle identification in heavy-ion experiments and for precise timing of relativistic ions and minimum-ionizing protons is investigated. Characterisation data of various samples and their influence to the detector performance are discussed. The lifetime of the charge carriers is found to be much longer than the t...
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The use of diamonds detectors in radiotherapy and its potential advantages over silicon diodes and ionisation chambers is reviewed. Preliminary results on the performance of CVD diamond detectors in an X-ray beam will be presented. While the devices are sufficiently sensitive, applications as dosimeters are at present limited by time dependent effects. Prospects for further work are described. ...
متن کاملSingle-Crystal CVD-Diamond Detectors Progress Report
Figure 1: Dark current behaviour of BDS samples metallized with sputtered Cr-Au electrodes. The measurements are performed in an electric-field range Emax= ± 3.0 V/μm by controlling dI/dV < 1nA/10V. At E = ± 1 V/μm, low currents of absolute values < 10 pico amps are measured for most of the samples. These are by orders of magnitude lower currents than those obtained from electronic-grade PolyCr...
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Single-Crystal CVD-Diamond Detectors (SC-DD) of ~ 300μm thickness have been tested in Cave A with proton beams of Ep > 1AGeV as start detectors for minimum ionizing particles. Fast charge-sensitive amplifiers developed at GSI and Bucharest were used. At particle rates up to 1MHz, stable operation and detection efficiency of ~100% are observed. The measured time resolution of σ ≥ 330ps is not sa...
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ژورنال
عنوان ژورنال: Optics Express
سال: 2005
ISSN: 1094-4087
DOI: 10.1364/opex.13.008612