The planned new Heavy Ion Synchrotron SIS 100/300 for the FAIR Project will consist of two separate tunnels. In addition to the tunnel where the beam lines itself will be situated, there will be an additional tunnel, for maintenance and supply purposes. This maintenance tunnel is desired to be accessible for technical personnel also during beam operation. Therefore, from the radiation safety po...

Substantial fluxes of protons and leptons with energies below the geomagnetic cutoff have been measured by the AMS experiment at altitudes of 370-390 Km, in the latitude interval ±51.7. The production mechanisms of the observed trapped fluxes are investigated in detail by means of the FLUKA Monte Carlo simulation code. All known processes involved in the interaction of the cosmic protons with t...

In order to have highly flexible secondary beamlines collimation is crucial. Collimators are blocks of material placed along the beamline that let main beam pass within collimator aperture limits, while most particles beyond it interact in and gets absorbed or loses enough energy be deflected away from core by magnets downstream. Some can at edge collimators accepted beam, creating background f...

Abstract Dose equivalent limits for single organs are recommended by the ICRP (International Commission Radiological Protection publication 103). These do not lend themselves to be measured. They assessed convoluting conversion factors with particle fluences. The Fluence-to-Dose tabulated in literature. allow assessing organ dose of interest using numerical simulations. In particular, literatur...

Among the factors influencing degradation of spent nuclear fuel cladding in interim dry storage, irradiation history and average burnup at discharge must be considered. In fact, due to pellet-cladding contact particularly affecting high fuels, inner surface becomes increasingly exposed damage caused by alpha decaying actinides present rim pellet. Moreover, low temperature conditions characteris...

The n_TOF facility hosts CERN’s pulsed neutron source, comprising two beam lines of different flight paths and one activation station. It is based on a proton delivered by the PS accelerator impinging lead spallation target. During Long Shutdown 2 (LS2) at CERN (2019-2021), major upgrade target was carried out in order to optimize performances beam. Therefore, characteristics experimental areas...

The Target Absorbers for Neutrals (TANs) represent one of the most radioactive regions in Large Hadron Collider (LHC). Seven 40 cm long fused silica rods with different dopant specifications, manufactured by Heraeus, were irradiated TANs located around ATLAS experiment Beam RAte (BRAN) detector group. This campaign took place during Run 2 p+p data taking, which occurred between 2016 and 2018. p...

Sunulan çalışmada, 0.060 MeV ila 2.614 foton enerjileri aralığında 18 farklı enerjide bizmut tabanlı bazı alaşımların gama radyasyonu zırhlama kapasiteleri incelenmiştir. Farklı oranlarda içeren Bi50/Pb25/Cd12.5/Sn12.5, Bi50/Pb28/Sn22, Bi55.5/Pb44.5, Bi58/Sn42 alaşımlarının azaltma belirtilen enerjilerde WinXCOM programı, GEANT4 ve FLUKA simülasyon programları yardımı ile Gama özelliklerini inc...