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Exradin® Diodes

d1h-diode_750x500
  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   The Exradin® Advantage Higher signal, flatter profiles and sharper resolution with ...Read more

Exradin® Diodes


  • Description
  • Specifications

 

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

 

The Exradin® Advantage

Higher signal, flatter profiles and sharper resolution with a smaller active measurement. Precise measurement of minute fields with high visibility of the penumbra.

 

Minimize Angular Dependence

Exradin diodes have less than 0.5% angular dependence when tilted up to 20°, providing more confidence when measuring the penumbra or edge of the beam.

 

Specialized for Small Fields

The D1V's diode face is perpendicular to the beam when upright, making it ideal for photon scanning applications and use in water phantoms and the Lucy 3D QA Phantom. The D1H's diode face is perpendicular to the beam when flat, for use inside traditional solid phantoms. Both diodes provide superior measurement of field sizes up to 20 x 20 cm2 with excellent spatial resolution and minimal noise.

 

 

Diode Type: P-type Si diode

Materials: C552 shell for EMI shielding and durability, potted with near-water equivalent epoxy to eliminate air gaps

Outside Diameter: 6.88 mm x 6.88 mm x 34.8 mm

Diameter of Sensitive Area: 1 mm2 x ~0.05 mm thick

Effective Depth Below Surface: 0.8 mm - Indicator marks or lines clearly identify internal diode orientation and active face

Intended Energy Range: Photons: 60Co to 25 MV

Low-Noise Triaxial Cable: 50 ohms, 29 pF/ft, 1.5 m long

Connector availability: Standard BNC triax, with HV bias capability disabled. Other connector options such as TNC or type M may be available upon request.

Waterproof: Yes, may be used in water phantoms, designed to mount cleanly and easily to available chamber holders.

Operating Voltage: 0 VDC bias (protected from accidental high voltage application)

Signal Polarity: Positive

Radiation response, typ: ~5 nC/Gy

Leakage current, typ: 100 fA (typical, depeds on electrometer used)

Temperature dependence, typ: 0.4 % / °C

Sensitivity decrease (at 6 MV): 1.0 % per kGy

Dose to pulse dependency: > 99.5% over relevant clinical range

Dose linearity: > 99.9%

Field size dependency: > 97.0%

Intended Field size for use: up to (20 x 20) cm2

Directional Dependence: ± 0.5% tilting ± 20

Operating Parameters: Temperature: 15 to 35 °C

Temperature: -15 to 50 °C

Relative Humidity: 10 to 95% non-condensing

Pressure: 600 to 800 mmHg

Product Standards Compliance: IEC 60601-11, IEC 607311, WEEE, RoHS