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Irradiation studies of multimode optical fibres for use in ATLAS front-end links
KTH, Superseded Departments, Physics.ORCID iD: 0000-0001-7011-7229
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2000 (English)In: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, ISSN 0168-9002, E-ISSN 1872-9576, Vol. 446, no 3, 426-434 p.Article in journal (Refereed) Published
Abstract [en]

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.
Keyword [en]
radiation tolerance, optical fibres, multimode, ATLAS, cryogenic temperatures, radiation, damage
Identifiers
URN: urn:nbn:se:kth:diva-19791ISI: 000087312500002OAI: oai:DiVA.org:kth-19791DiVA: diva2:338483
Note
QC 20100525Available from: 2010-08-10 Created: 2010-08-10 Last updated: 2017-12-12Bibliographically approved

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Pearce, Mark

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