A new single crystal diamond dosimeter for small beam: comparison with different commercial active detectors
نویسندگان
چکیده
منابع مشابه
Characterization of a new commercial single crystal diamond detector for photon- and proton-beam dosimetry
A synthetic single crystal diamond detector (SCDD) is commercially available and is characterized for radiation dosimetry in various radiation beams in this study. The characteristics of the commercial SCDD model 60019 (PTW) with 6- and 15-MV photon beams, and 208-MeV proton beams, were investigated and compared with the pre-characterized detectors: Semiflex (model 31010) and PinPoint (model 31...
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Single-crystal CVD diamond (scCVDD) for detector applications is grown on best quality HPHT single-crystal diamond substrates of (100) crystallographic orientation, because the incorporation of stacking faults or the creation of twin crystals is hereby more suppressed than, e.g., in the (111) growth direction. Any imperfection of the substrate may hand over in the CVD diamond film either as iso...
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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...
متن کاملDevelopment of Single-Crystal CVD-Diamond Detectors
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...
متن کاملCharacterisation 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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ژورنال
عنوان ژورنال: Physics in Medicine and Biology
سال: 2013
ISSN: 0031-9155,1361-6560
DOI: 10.1088/0031-9155/58/21/7647