Wspólnotowy Serwis Informacyjny Badan i Rozwoju - CORDIS


EVIDOS Streszczenie raportu

Project ID: FIKR-CT-2001-00175
Źródło dofinansowania: FP5-EAECTP C
Kraj: Germany

Advanced methods for field spectrometry in terms of energy and angle

The quantities to be determined for the radiation protection of workers, personal dose equivalent and effective dose, depend on the energy and the direction of the neutron radiation. Two prototype instruments of energy/direction spectrometers were developed for use in unknown radiation fields in nuclear industry. These are based on different measurement principles and complement each other. The reference values for energy- and direction-dependent quantities Hp(10) and E were calculated from these spectra.

The direction spectrometer with superheated drop detectors uses a "telescope design" with a single superheated drop detector at the centre of a 30 cm diameter nylon-6 sphere. The direction spectrometer based on silicon detectors consists of six detector capsules, each containing a stack of 4 silicon detectors, mounted onto the surface of a 30 cm diameter polyethylene sphere. The response matrix of the full detector set-up was determined from measurements. While the development and validation of the first device is not complete, the second devices was used and tested in all radiation fields.

Due to the restricted applications of these instruments and the considerable effort needed to transfer these into routine devices, exploitation in the form commercial devices does not appear imminent. The spectrometers are, however, available on request for investigations.

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