Machine QA
Exradin® D1H Diode Detector Ideal for in-phantom measurements
The D1H's diode face is perpendicular to the beam when flat, for use inside traditional solid phantoms.
Exradin® D1H Diode Detector part of complete solution for:
Annual QA
Diode Type
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P-type Si diode
Materials
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C552 shell for EMI shielding and durability, potted with near-water equivalent epoxy to eliminate air gaps
Outside Diameter
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D1V (REF 92740): Ø 6.88 mm (0.271”) x 46.2 mm (1.817”) long, D1H (REF 92741): 6.88 mm (0.271”) x 6.88 mm (0.271”) x 34.8 mm (1.37”)
Diameter of Sensitive Area
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1 mm2 x ~0.05 mm thick
Effective Depth Below Surface
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0.8 mm - Indicator marks or lines clearly identify internal diode orientation and active face
Intended Energy Range
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Photons: 60Co to 25 MV
Low-Noise Triaxial Cable
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50 ohms, 29 pF/ft, 1.5 m long
Connector availability
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Standard BNC triax, with HV bias capability disabled. Other connector options such as TNC or type M may be available upon request.
Waterproof
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Yes, may be used in water phantoms, designed to mount cleanly and easily to available chamber holders.
Operating Voltage
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0 VDC bias (protected from accidental high voltage application)
Signal Polarity
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Positive
Radiation response, typ
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~5 nC/Gy
Leakage current, typ
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<100 fA (typical, depends on electrometer used)
Temperature dependence, typ
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<0.4 % / °C
Sensitivity decrease (at 6 MV)
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<1.0 % per kGy
Dose to pulse dependency
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> 99.5% over relevant clinical range
Dose linearity
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> 99.9%
Field size dependency
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> 97.0%
Intended Field size for use
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up to (20 x 20) cm2
Directional Dependence
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< ± 0.5% tilting ± 20
Operating Parameters
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Temperature: 15 to 35 °C
Relative Humidity
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20 to 80% non-condensing
Pressure
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650 to 770 mmHg
Temperature
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-15 to 50 °C
Relative Humidity
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10 to 95% non-condensing
Pressure
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600 to 800 mmHg
Product Standards Compliance
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IEC 60601-11, IEC 607311, WEEE, RoHS
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