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CT Chamber PTW 30009

CT Chamber PTW 30009
CT Chamber PTW 30009
Item Number :
300-560

CT Chamber PTW 30009.

Details

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CT Chamber PTW 30009.

The CT chamber is a vented cylinder chamber designed for dose length product and dose length product rate measurements in computed tomography.  The chamber allows the determination of the CTDI1001, CTDIW2 and CTDIVol3 according to IEC 61223-2-6 and IEC 61223-3-5.

• Pencil type chamber for measurements within a CT head or body phantom or free in air

• Provides a sensitive measuring length of 10 cm

• Shows a homogeneous response over the whole chamber length

Specifications
Type of Product:
  vented pencil type chamber
Application:  dosimetry in computed tomography
Measuring Quantity:  air kerma length product, exposure length product
Reference Radiation Quality:  120 kV, HVL 8.4 mm Al (RQT9)
Nominal Sensitive Volume:  3.14 cm3
Design:  not waterproof, vented, pencil type
Reference Point:  chamber center
Direction of Incidence:  radial
Nominal Response:  14 nC/(Gy ··cm)
Chamber Voltage:  -100 V nominal, ± 500 V maximal high voltage to be connected only with active current-limiting device (Imax< 0.5 mA)
Energy Response:  < ± 5 % for 70 - 150 kV
Leakage Current:  < ± 10 fA
Cable Leakage:  < 1pC/(Gy ··cm)

Materials and Measures
Wall Material:
  1 mm PMMA, graphite coated
Wall Area Density:  119 mg/cm2
Dimension of Sensitive Volume:  radius 3.5 mm, length 100 mm
Electrode:  Al tube, graphite outer diameter 3 mm

Ion Collection Efficiency at Nominal Voltage: 
Ion collection time:  274 µs
Max. dose rate for > 95.0 % saturation:  12.4 Gy/s
Max. dose per pulse for > 95.0 % saturation:  2.26 mGy

Useful ranges
Chamber Voltage:
  ± 100 - 400 V
Radiation Quality:  50 - 150 kV electrons
Temperature:  10° to 40° C, 50° to 104°F
Humidity:  10 to 80 %, max 20 g/m3
Air pressure:  700 - 1060 hPa

1CTDI100 = Computed Tomography Dose Index 100
2
CTDIW  = Weighted CTDI100

3CTDIVol = Volume CTDIW

 

 Please specify which connection end is needed

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