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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KTH, Superseded Departments, Physics.ORCID iD: 0000-0001-7011-7229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, p. 426-434Article 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, p. 426-434
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, id: diva2:338483
Note
QC 20100525Available from: 2010-08-10 Created: 2010-08-10 Last updated: 2017-12-12Bibliographically approved

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