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Fluoride Glasses for Detectors

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Devising and Production of Radiation Hard Fluoride Glasses as Detectors for Application on Future Accelerators in Nuclear Physics.

Tech Area / Field

  • MAT-SYN/Materials Synthesis and Processing/Materials

Status
8 Project completed

Registration date
01.08.1994

Completion date
27.02.2000

Senior Project Manager
Lapidus O V

Leading Institute
VNIIKhT (Chemical Technology), Russia, Moscow

Supporting institutes

  • FIAN Lebedev, Russia, Moscow\nInstitute of General Physics named after A.M. Prokhorov RAS, Russia, Moscow

Collaborators

  • DRAL/Daresbury Laboratory / Rutherford Appleton Laboratory, UK, Oxfordshire, Didcot

Project summary

The goal of the project is to develop fluoride glass scintillation radiation hard modules for application in electromagnetic calorimetry at future accelerators being built in Russia (UNK, Protvino), USA (SSC, Dallas), EEC (CERN, Geneve). On the basis of investigations performed at participating institutions since 1992 the following problems will be solved as a result of the project implementation:

– investigation of the dependence of fluoride glass optical and radiation properties on the glass composition, impurities, synthesis conditions, and production of materials with the following characteristics: density - 5.8–6.2 g/cm3, radiation hardness - 10 Mrad, light yield - 2.6–3.0% (of that of NaI (Tl)), decay time less than 20 ns. Cost of one glass module weighing 1 kg should be less than 500 US dollars;

– development of new technologies of initial component synthesis and production of large size modules (25ґ2.5ґ250 mm3) of glasses with characteristics mentioned above;

– design and development of the equipment for module production;

– development of methods to monitor the glass radiation and optical characteristics;

– establishment of the experimental production and manufacturing of 5 prototypes (9 modules each) to lest those in Russia and abroad.

Later on the basis of conducted investigations the scintillating nuoride glass production at the rate of ~ 20 tons per year is planned to be arranged.

The commercial significance of the project is contained in the reduction of a module cost by 2–3 times as compared to that of the crystalline materials (CeF3) giving for a single physical setup the economy of 20–30 US million dollars.

It is necessary to note that the scientific and technological basis created during the project, realization can be used also to solve the following problems not connected with accelerator detectors:


- cheap detectors for nuclear power plant and radioactive pollution monitoring;
- detectors for security control at the airports;
- IR and UV transparent articles (windows, lenses, etc.);
- IR glass lasers;
- PET detectors (positron-emission tomography) for medicine use;
- development of fiber-optics detectors for HF concentration monitoring at chemical and metallurgical plants.


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