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SUMMARY:Sub-Millimetre Particle Tracking Using PEPT with the PolarisJ Semi
 conductor Array
DTSTART;VALUE=DATE-TIME:20190319T131500Z
DTEND;VALUE=DATE-TIME:20190319T133000Z
DTSTAMP;VALUE=DATE-TIME:20260906T142153Z
UID:indico-contribution-1319@indico.tlabs.ac.za
DESCRIPTION:Speakers: Nicholas Hyslop ()\nThe Positron Emission Particle T
 racking (PEPT) technique has been in development in Cape Town since 2009\,
  and allows one to track a 1mm positron-emitting point source travelling a
 t 1m/s to within 1mm\, 1000 times a second. Typically\, this utilises a la
 rge\, high efficiency scintillation detector like BGO. However\, recent ex
 periments have shown that high resolution\, relatively high efficiency sem
 iconductor (CdZnTe) detectors\, which are usually used in prompt gamma-ray
  detection during proton radiotherapy\, are able to track particles down t
 o sub-millimetre precision. We have been using the PolarisJ detectors to d
 evelop the PEPT technique\, and hope to use them to track particles in mic
 ro-scale fluid dynamics applications. Initial measurements have been able 
 to locate a $^{22}$Na button source in three-dimensional space with an unc
 ertainty of 0.11mm and a signal-to-noise ratio of 85%. This is a promising
  first step towards tracking micrometre-sized particles with sub-millimetr
 e accuracy.\n\nhttps://indico.tlabs.ac.za/event/82/contributions/1319/
LOCATION:J Block Auditorium
URL:https://indico.tlabs.ac.za/event/82/contributions/1319/
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