ULTRA-CAM Ion Implanted Silicon Radiation Detector for Continuous Air Monitoring

  • Alpha and beta continuous air monitoring (counting in adverse environment).
  • Rugged and reliable.
  • Ion-implanted front contact.
  • Protective polymer front-contact coating.
  • Low bias voltage.
  • Advanced surface passivation for total device stability.

Continuous air monitoring (CAM) instrumentation is used for counting, or rough-spectroscopy, of alpha particles from filters used with continuous air monitors. ULTRA CAM detectors set a new standard for silicon detectors for this purpose.

Since CAM instruments must work in air, exterior light, and under uncontrolled ambient conditions, the entrance contact of the ULTRA CAM detectors is coated with both an aluminum evaporation and a thin polymer film for protection against adverse environmental conditions, such as high humidity.

ULTRA CAM detectors have active areas ranging from 300 to 2000 mm2. They operate at low voltage (+15 to 24 volts). This means that a separate HV supply is not required; the NIM +24 volt supply can be used for application of bias.

ULTRA CAM detectors are designed for use in air and are not suitable for use in a vacuum. These sealed detectors should not be put into a vacuum.
  • Literature +

  • Mounting Arrangements +


    B  Microdot connector on the rear of the can.

    C  BNC connector on the rear of the can.

    Dimensions given in millimeters.


    Detector Size (mm2)

    W (Nominal)
    Type B Rear Microdot Type C Rear BNC
     X Y Z X Y Z
     300 19.5 28.6 12.3 7.1 28.6 12.3 15.9
     450 23.9 32.0 12.3
    7.1 32.0 12.3
    15.9
     490 25.0 33.4 12.3
    7.1
    33.4 12.3
    15.9
     600 27.6 36.1 12.3
    7.1
    36.1 12.3
    15.9
     900 33.9 45.2 12.3
    7.1
    45.2 12.3
    15.9
     1200 40.0 48.8 12.3
    7.1
    48.8 12.3
    15.9
     2000 51.0 65.5 12.3
    7.1
    65.5 12.3
    15.9
     Tolerance ±0.5 ±0.3
    ±0.3
    ±0.3
    ±0.3
    ±0.3
    ±0.3
  • Ordering Information +


    Supplied with B Mount unless otherwise specified.

    *Deeper detectors available on special order.


    Active Area (mm2)
    Minimum Depletion Depth 100 µm*
    Model No. 
    300
    450
    490
    600
    900
    1200
    2000
    U-CAM-300
    U-CAM-450
    U-CAM-490
    U-CAM-600
    U-CAM-900
    U-CAM-1200
    U-CAM-2000