Abstract

The JSI TRIGA reactor features several in-core and ex-core irradiation facilities, each having different properties, such as neutron/gamma flux intensity, spectra and irradiation volume. A series of experiments and calculations was performed in order to characterise radiation fields in irradiation channel thus allowing users to perform irradiations in a well characterised environment. Since 2001 the reactor has been heavily used for radiation hardness studies for components used at accelerators such as the Large Hadron Collider (LHC) at CERN. Since 2010 it has been extensively used for testing of new detectors and innovative data acquisition systems and methods developed and used by the CEA. Recently, several campaigns were initiated to characterise the gamma field in the reactor and use the experimental data for improvement of the treatment of delayed gammas in Monte Carlo particle transport codes. In the future it is planned to extend the testing options by employing pulse mode operation, installation of a high energy gamma ray irradiation facility and allow irradiation of larger samples at elevated temperature.

Highlights

  • The Jožef Stefan Institute (JSI) TRIGA reactor has been operating since 1966

  • More than a decade of efforts in experimental and computational characterisation of the neutron and gamma fields in the irradiation facilities resulted in JSI TRIGA reactor being a very well characterised neutron irradiation facility

  • The reactor has been used for testing various detectors such as fission chambers and self-powered neutron detectors (SPNDs) as well as innovative data acquisition systems and methods developed and used by the CEA

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Summary

INTRODUCTION

More than a decade of efforts in experimental and computational characterisation of the neutron and gamma fields in the irradiation facilities resulted in JSI TRIGA reactor being a very well characterised neutron irradiation facility. For this reason it has become the reference centre for neutron radiation hardness studies for the CERN’s LHC and other accelerators within the H2020 project AIDA II (Advanced European Infrastructures for Detectors at Accelerators).

Reactor description
Characterisation of irradiation fields
RADIATION HARDNESS STUDIES
Industry
Nuclear instrumentation testing
SiC based detectors
Large sample irradiation facility
High energy gamma ray irradiation facility
Pulse experiments
Findings
CONCLUSION

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