Neutron detection and dosimetry using polycrystalline CVD diamond detectors with high collection efficiency

Area of Science:

• Materials Science
• Nuclear Physics
• Detector Technology

Background:

• Polycrystalline chemical vapour deposited (CVD) diamond films show promise for neutron detection and dosimetry.
• Current limitations include low signal pulse generation due to high electron-hole pair creation energy (13.2 eV) and reduced charge collection efficiency from trap sites in CVD films.

Purpose of the Study:

• To present the performance of a novel CVD diamond detector featuring high gain (HG) contacts.
• To discuss the potential applications of these HG CVD diamond detectors in neutron dosimetry.

Main Methods:

• Development of a new type of CVD diamond detector incorporating high gain (HG) contacts.
• Characterization and performance evaluation of the HG CVD diamond detector.

Main Results:

• The novel HG CVD diamond detector demonstrates improved performance compared to conventional CVD diamond detectors.
• The developed detector addresses key limitations in signal generation and charge collection efficiency.

Conclusions:

• The HG CVD diamond detector represents a significant advancement for neutron detection and dosimetry.
• These detectors hold considerable potential for future applications in neutron dosimetry, offering enhanced sensitivity and reliability.