Irradiation studies of multimode optical fibres for use in ATLAS front-end links
2000 (English)In: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, ISSN 0168-9002, Vol. 446, no 3, 426-434 p.Article in journal (Refereed) Published
The radiation tolerance of three multimode optical fibres has been investigated to establish their suitability for the use in the front-end data links of the ATLAS experiment. Both gamma and neutron irradiation studies are reported. A step-index fibre with a pure silica core showed an induced attenuation of similar to 0.05 dB/m at 330 kGy(Si) and 1 x 10(15) n(1 MeV Si)/cm(2) and is suitable for use with the inner detector links which operate at 40-80 Mb/s. A graded-index fibre with a predominantly germanium-doped core exhibits an induced attenuation of similar to 0.1 dB/m at 800 Gy(Si) and 2 x 10(13) n(1 MeV Si)/cm(2) and is suitable for the calorimeter links which operate at 1.6 Gb/s. Measurements of the dose rate dependence of the induced attenuation indicate that the attenuation in ATLAS will be lower.
Place, publisher, year, edition, pages
2000. Vol. 446, no 3, 426-434 p.
radiation tolerance, optical fibres, multimode, ATLAS, cryogenic temperatures, radiation, damage
IdentifiersURN: urn:nbn:se:kth:diva-19791ISI: 000087312500002OAI: oai:DiVA.org:kth-19791DiVA: diva2:338483
QC 201005252010-08-102010-08-10Bibliographically approved