Radiation-Hardness Measurements of High $OH^{-}$ Content Quartz Fibres Irradiated with 24 GeV Protons up to 1.25 Grad
Makaleler > Tam Makale · 2007
Yazarlar: Cankocak, Kerem, Bakirci, N M, Cerci, Salim, Gülmez, Erhan, Merlo, Jean-Pierre, Onel, Yasar, Ozok, Ferhat, Schmidt, Ianos, Sonmez, Nasuf
CERN Document Server (European Organization for Nuclear Research), Uluslararası, 2007
Özet
We investigated the darkening of two high OH- content quartz fibres irradiated with 24 GeV protons at the Cern PS facility IRRAD. The two tested fibres have a 0.6 mm quartz core diameter, one with hard plastic cladding (qp) and the other with quartz cladding (qq). These fibres were exposed at about 1.25 Gigarad in 3 weeks. The fibres became opaque below 380nm, and in the range 580-650 nm. The darkening under irradiation and damage recovery after irradiation as a function of dose and time are similar to what we observed with electrons. The typical attenuation at 455 nm are 1.44 + - 0.22 and 2.20 + - 0.15 dB/m at 100 Mrad for qp and qq fibres, respectively. The maximum damage recovery is also observed near this wavelength.