Wednesday, March 8, 2023

High Sensitivity Multifunction Compton Camera

Compton imaging exploits inelastic scattering, known as Compton scattering, using a Compton camera consisting of a scatterer detector in the front layer and an absorber detector in the back layer. Compton imaging can discriminate gamma rays over a wide energy range from several  hundred keV to several MeV.

Damavan Imaging was founded in 2014 to develop its 8 Temporal Imaging proprietary patents and software. In 2015 it won a big grant from the French Nuclear Waste Agency, ANDRA, to develop a Compton camera able to image low activity waste. In 2018 Damavan Imaging won a Horizon 2020 EU SME Award.

Product Introduction: 
Temporal Imaging is a new concept for gamma ray imaging that uses both light and time distribution of each scintillation event to localize precisely each scintillation event in space (X,Y,Z), time (T) and energy (E).
This new imaging concept allows an improvement on the voxel size for each scintillation event (1x1x2mm) on each of the two detector plates. It also allows a coincidence veto between the 2 Compton plates.
Temporal δ Delta is the first device to use this new concept. It has an exceptional Signal/noise ratio thanks to the time veto between it’s 2 plates.
The Temporal δ Delta V3 is equipped with a small spectroscopic CZT detector and also enable isotope identification, simple dosimetry and 4 Pi source detection.
Temporal δ is the best Compton imager (400 KeV - 3000 KeV), excellent spectrometer (50 KeV - 3000 KeV), stable photon counter with dose estimation.
The most sensitive Compton camera on the market, offering:
  • Good sensitivity (<5 nSv/h) allowing imaging of natural background.
  • Noise reduction through dual heads
  • Distance to the source in Gamma: Removes the doubt... is the source in front of the wall, in the wall or behind it?
  • Efficient tool for isotope identification: Energy resolution: <1.5% at 662 keV.
  • Stable photon counter both energy and spatially resolved allowing quantification.
Why is the Temporal δ camera unique? 
Temporal δ is a new generation portable Compton gamma camera - spectrometer and imager - based on temporal imaging: a completely new detection concept backed by 8 proprietary patents and software.
Temporal imaging uses both light and time distribution of each scintillation event to localize it very precisely in space (X-Y-Z), time (T) and energy (E). 
The use of large volume monolithic, high density, high Zeff CeBr3 crystals having a low natural radioactivity and fast high yield scintillations guarantees very efficient and clean photon detection by digital SiPM.
The asymmetric Compton concept, 300 ps time veto, and event selection scheme explain this camera's good angular resolution and signal/noise
  • Temporal δ Compton Camera can be used for many applications, such as:
  • Nuclear medicine
  • Nuclear waste management and characterization
  • Decommissioning of a nuclear facilities
  • Gamma imaging
  • Safety and security
  • Temporal δ Compton is composed of a portable unit including a processing unit and one detector unit.
  • Temporal imaging read-out electronics.
  • 1 calibrated detector module composed of two 32x32 mm CeBr3 crystals read-out through Phillips DPC3200 Tile Sensor.
  • Embedded software to reconstruct characteristic vector (X,Y,Z,T,E) in real time for each valid scintillation event.
  • Image reconstruction from acquired vectors is done at distance on a laptop.
  • Energy Range 100 keV-3 MeV (Spectroscopy) and 400keV-3MeV (imagery).
  • The sensitivity of the system is better than 1 nSv/h.

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