Natural diamond is being an attractive
material since it was discovered due to its many numerous mechanical characteristics.
The small size of carbon atom and diamond lattice structure give it unique
physical features. However, poor electrical properties and rarity of diamond
have reduced research interest. Researchers reconsidered the usage of diamond in
radiation detection field after first synthetic diamond was fabricated, nearly
three decades ago, with remarkable properties using Chemical vapor deposition (CVD) growth
CVD has been utilized
to grow high purity polycrystalline CVD (pcCVD) diamond. However, pcCVD diamond
has a significant issue with charge collection due to grain boundaries 2. Because of that, Element Six fabricated a single-crystal
CVD (scCVD) diamond with semiconducting properties 3. scCVD diamond outstanding properties including high
resistivity, due to the high-band gap, which lead to diamond room temperature
operation with negligible leakage current 4. In addition, high displacement energy (43 eV)
required to displaced carbon atom in diamond sensors results
in high radiation hardness 5. Recent studies demonstrated diamond reliability
with high luminosity experiments 4, 6, 7. High
saturation velocity beside the large mobility of carriers lead to a superior time resolution 8, 9. Radiation hardness and fast timing capability are
two essential properties that make CVD diamond sensors a candidate alternative
for current silicon detectors in
high energy physics tracking experiments 10-12.
Further, RD42 collaboration was established to develop diamond sensor for
high luminosity experiments at Large Hardon Collider (LHC) 13. Recently, the collaboration succeeded to
fabricate 3D diamond detector with low voltage bias and high charge collection efficiency
for future heavy-ion experiments 14.
In this paper, energy deposited (?E) measurements in two
parallel scCVD diamonds are presented for proton and iron
energetic beams and its produced secondary particles from bombardment through
thick polyethylene targets. Geant4 simulation is built to compare measured with
simulated spectra and, also, to investigate and analyze peak formation on the
measured spectra 15. In addition, simulation studied the
feasibility of the construction of a particle identification system using energy
deposited in diamonds sensors with the Time-of-Flight (ToF) technique 16.