Radiation Detection and Measurement Laboratory

Laboratory Activities

Education

  • Graduate students   perform “Radiation Detection and Measurement” experiments.  Within the scope of experiments,  by using the radioactive sources (emitting alpha,  beta and gamma), the detection      fundamentals and practical measurement methods are shown with the selected radiation detectors depending   on the radiation type and the matter it  interacts (Course  Contents).

 

Research

  • This   laboratory serves mainly  for educational purposes. However,      students carrying out their thesis are      given the opportunity to do research on scintillators     capable of giving very fast pulse (antresan /   plastic scintillators, NaI  (Tl) inorganic scintillators)  and with instruments processing fast pulse. In addition, various investigations  are foreseen by using the CdZnTe semiconductor     radiation detectors and plastic scintillators operating at room temperature that are  developed due to the rapid semiconductor technology. Some of them are;

ZnS (Ag) / BC400 Inorganic + particle spectroscopy charged with plastic scintillators

Determination of the spectroscopic performance of CdZnTe detectors (ARTICLE 1).

Measurement of detection efficiency, peak/valley ratio, the photon interaction depth when used to radionuclides emitting single and multi-energy gamma rays (57Co, 241Am, 137Cs, 133Ba, 152Eu) in CdZnTe detectors and determination of the factors that disturb the spectrum.

Measurement of the degree of uranium enrichment by non-destructive gamma-spectroscopic method using HPGe / CdZnTe detectors.

Comparison of dose responses in X-ray beam quality and gamma energies of the plastic scintillators.

Development of spectral photopeak resolution (peak deconvolution) methods in CdZnTe detectors.

Examination of the events using real-time pulse overlap (coincidence) by using plastic and/or NaI (Tl) detectors giving fast pulse and timing instrumentation processing pulses in millisecond-nanosecond time range.

. If radioactive contamination is suspected, on-site/site radionuclide determination and dose measurement are performed.

 

Laboratory Facilities

  • ZnS (Ag) / BC400      inorganic + plastic scintillator detectors
  • BC408 plastic scintillator detector with fast pulse decay time
  • Antresan scintillation crystal
  • Geiger-Mueller tube
  • NaI (Tl) well-type scintillation detectors (2 inch x  2 inch)
  • NaI (Tl) scintillation detector (2 inch x 2 inch)
  • The co-planar grid CdZnTe semiconductor detectors with crystal volume of 1000, 1687.5 and 2250 mm3
  • Portable digital multi-channel analyzer that can be used by      mounting neutron detector with      3He gas proportional counter probe and scintillation detector with 2-inch x 2-inch NaI (Tl) crystal.
  • Counting systems such as counter, ratemeter
  • Portable Geiger – Mueller pancake probe (dose meter)
  • Portable ionization chamber (dose meter)
  • Portable organic scintillator (dose meter)
  • NIM modules (HV power    supply, amplifier, research amplifier,      multi-channel analyzer, single-channel      analyzer, pulse generator (pulser), coincidence analyzer, time-amplitude converter (TAC), counter-timer unit, etc.).
  • Oscilloscopes
  • Digital Multimeters
  • Nuclear Instrumentation Modules (NIM) bins
  • DC Power Supplies