Neutron irradiation and damage assessment of plastic scintillators of the Tile Calorimeter

High Energy Particle Physics Workshop 2016

Mdhluli, J.E.^1 ; Mellado, B.^1 ; Sideras-Haddad, E.^1

University of the Witwatersrand, 1 Jan Smuts Avenue, Braamfontein, Johannesburg

2000, South Africa^1

关键词: Comparative studies;    Electron paramagnetic resonances (EPR);    Photo multiplier tube;    Plastic scintillator;    Radiation assessment;    Readout Electronics;    Scintillating lights;    Wavelength shifting;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/802/1/012008/pdf
DOI  :  10.1088/1742-6596/802/1/012008

来源: IOP

【 摘 要 】

Following the comparative study of proton induced radiation damage on various plastic scintillator samples from the ATLAS-CERN detector, a study on neutron irradiation and damage assessment on the same type of samples will be conducted. The samples will be irradiated with different dose rates of neutrons produced in favourable nuclear reactions using a radiofrequency linear particle accelerator as well as from the SAFARI nuclear reactor at NECSA. The MCNP 5 code will be utilized in simulating the neutron transport for determining the dose rate. Light transmission and light yield tests will be performed in order to assess the radiation damage on the scintillators. In addition, Raman spectroscopy and Electron Paramagnetic Resonance (EPR) analysis will be used to characterize the samples after irradiation. The project aims to extent these studies to include radiation assessment damage of any component that processes the scintillating light and deteriorates the quantum efficiency of the Tilecal detector, namely, photomultiplier tubes, wavelength shifting optical fibres and the readout electronics. They will also be exposed to neutron irradiation and the damage assessed in the same manner.