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Detector Interface Module (DIM)

Radiation Detector Interface Module DIM
  • Provides High Voltage for HPGe or NaI Detectors
  • Single Cable Connectivity for DSP Systems
  • <310 grams for Portable Systems
  • High Impact ABS Plastic Housing

For older, non-ORTEC or non-SMART-1 detectors, the Detector Interface Module (DIM) is used to supply HV and preamplifier power as well as providing warm-up protection for the HPGe detector. The DIM is provided in a high impact ABS plastic housing with flying leads with mating connectors (HV, Bias Supply Shutdown, Energy Output, Preamplifier Power, and Inhibit Output) to connect to the existing detector cabling.

The following DIMs support non-SMART-1 detector systems:
  • DIM-POSGE  For any non-SMART-1 positive-bias, HPGe detector.
  • DIM-NEGGE  For any non-SMART-1 negative-bias, HPGe detector.
  • DIM-POSNAI  For any positive-bias NaI detector.

DIM-296 Option for 14 Pin PMT NaI Radiation DetectorsDIM-296 Option for 14 Pin PMT NaI Detectors
The DIM-296 option is an alternative to the DIM-POSNAI for NaI detectors with a standard 14-Pin base. The DIM-296 is a 296 ScintiPack with a single cable connection, ten feet in length for direct connection to the instrument.
  • For scintillation detectors employing 10-stage PMTs that fit standard 14-pin sockets
  • Convenient, single-cable connection direct to instrument
  • Internal, adjustable, high-voltage bias supply eliminates high-voltage cables
  • Active bias network minimizes peak shifts at high counting rates
  • Low power consumption (240 mW) for portable applications

  • Literature +

  • Specifications +


    Dimensions
    		 DIM:  12 cm x 8.2 cm x 3.3 cm (4.7 in. x 3.2 in. x 1.3 in.).
    DIM-296:  5.6 cm (2.2 in.) diameter x 17 cm (6.7 in.) length.
    Weight DIM:  Net  <240 gm (0.5 lb.). Shipping  1.21 kg (2.6 lb.).
    DIM-296:  Net  0.5 kg (1.1 lb). Shipping  1.2 kg (2.6 lb).
    Performance DIM-POSGE:  Output +500 to +5 kV, 100 MΩ impedance.
    DIM-NEGGE:  Output –500 to –5 kV, 100 MΩ impedance.
    DIM-POSNAI:  +100 to +1800 V, 600 µA below 1000 V, 300 µA maximum above 1000 V.

    Connectors
    DIM-POSGE
    and
    DIM-NEGGE
    		 Preamplifier Power:  9-PIN D female 1 W maximum (+12 V, –12 V, +24 V, –24 V, 2 GND)
    Analog In:  BNC male
    Bias Shutdown In:  BNC male
    Bias Out:  SHV (HV) female
    TRP Inhibit Out/Coincidence Gate In:  BNC male (function is software selected)
    DIM-POSNAI Preamplifier Power:  9-PIN D female 1 W maximum (+12 V, –12 V, +24 V, –24 V, 2 GND)
    Analog In:  BNC male
    Bias Out:  SHV (HV) female
    Coincidence Gate In: BNC male

  • Ordering Information +


    Model Description
    DIM-POSGE Detector interface module for non-SMART positive bias HPGe detector. Contact factory for use with -Plus option detector.
    DIM-NEGGE
    		 Detector interface module for non-SMART negative bias HPGe detector. Contact factory for use with -Plus option detector.
    DIM-POSNAI Detector interface module for positive bias NaI detector
    DIM-296 296 ScinitPack High-Rate PMT Base for use with digiDart, digiDART-LF, DSPEC jr 2.0, DSPEC LF, or DSPEC Pro.