CNCP Project
Project profile
Project title:
Organisation of the manufacture of CdTe (CdZnTe) detecting modules for X-and gamma-radiation
The mission of the Project is to set up a production business which will manufacture small lots of high-tech Detecting Modules (DM) for X-ray and gamma-ray registration. NSC KIPT developed detecting modules from CdTe and CZT during the last 15 years and in isolated cases marketed them. The own technology of manufacturing DM was elaborated. Since sensors with CdTe (CZT) are in the growing demand in different areas of industry and science, which are connected with an ionizing radiation, the time has come to organize a small-lot production of them. The Project envisages also the creation of new jobs.
Total Project cost was £195,900. Investor: British Department of Trade and Industry (DTI), Program CNCP. The contribution of DTI is £158,700. Sources of other investment are National Science Centre KIPT of the National Academy of Sciences of Ukraine.
Duration: two years, 02.2009 - 01.2011
The realization of the project has allowed:
- to setup a small-lot production making and marketing high-tech sensors and detecting modules for needs of the manufacturers of radiation measuring equipment.
- to elaborate the manufacture process of CdTe and CZT sensors and modules for detecting gamma-radiation and bring the annual production up to several hundreds of DM.
- to create jobs for the scientific specialists of the NSC KIPT.
Products
The project envisages the manufacture of three modules (DM) for detecting X- and gamma-rays which differ in their characteristics and applicability. A specificity of a such product is that it is not the functionally finished device (dosimeter, spectrometer) but is only a part of it, though the most important and sophisticated part in the technological aspect. Any radiation-measuring device contains inside a sensor together with a preamplifier.
 DM for the monitoring of X- and gamma-ray dose rate |
 Crystals and sensors from CdTe and CZT |
Specimens of the housed detecting modules designed for the dosimetry of X- and gamma-ray radiation with sensors from semiconductor compounds CdTe or CdZnTe are shown in figures. The developed and designed detecting modules have passed preliminary tests at the National Scientific Centre "Institute of Metrology" (Kharkov). The designer documentation has been also developed for the dosimetry detecting modules.
Specifications of CdTe (CZT) Detecting modules:
| Detecting module number | 1 | 2 | 3 |
| Application | X- and gamma-ray dosimetry | X- and gamma-ray dosimetry | X- and gamma-ray spectrometry |
| Sensor | CdTe (CZT) | CdTe (CZT) | CdTe (CZT) |
| Integrated electronics | charge sensitive preamplifier | current-voltage converter | spectrometry-grade charge sensitive preamplifier |
| Measured parameter and meter range | dose rate — from 0.1 µSv/h to 10 Sv/h | dose rate — from 0.5 Sv/h to ∼ 100 Sv/h | operating energy range — from 5 keV to 2 MeV energy resolution — 5% (662 keV) |
| Advantages | High efficiency of X- and gamma-ray registration (∼ 30000 pulse/µSv) | Excellent analogue sensitivity ~ 2×10-3 C/Sv. High radiation resistance (up to 105 Sv) | Operation at room temperatures; Small dimensions; Allows qualitative evaluation of the different radionuclides contribution |
| Additional information | The cable connecting sensor and I/V converter can be up to 50 m long |