Report number
| ATL-ELEC-99-001 |
Title
| Irradiation Studies of Multimode Fibres for use in ATLAS Front-end Links |
Author(s)
|
Mahout, G ; Andrieux, M L ; Arvidsson, C B ; Charlton, D G ; Dinkespiler, B ; Dowell, John D ; Gallin-Martel, L ; Homer, RJ ; Jovanovic, P ; Kenyon, Ian Richard ; Kuyt, G ; Lundqvist, J M ; Mandic, I ; Martin, O ; Pearce, M ; Shaylor, H R ; Stroynowski, R ; Troska, Jan K (Imperial Coll., London) ; Wastie, R L ; Weidberg, AR ; Wilson, J A ; Ye, J Εμφάνιση και των 22 συγγραφέων |
Publication
| 1999 |
Imprint
| 03 Nov 1999 |
Number of pages
| 14 |
Subject category
| Detectors and Experimental Techniques |
Accelerator/Facility, Experiment
| CERN LHC ; ATLAS |
Free keywords
| Radiation tolerance ; multimode ; optical fibres |
Abstract
| The radiation tolerance of three multimode optical fibres has been investigatedto establish their suitability for 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 ∼0.05 dB/mat 330 kGy(Si) and 1×1015 n(1 MeV Si)/cm2 and is suitablefor use with the inner detector links which operate at 40-80 Mb/s. A graded-indexfibre with a predominantly germanium doped core exhibits an induced attenuation of ∼0.1 dB/mat 800 Gy(Si) and 2×1013 n(1 MeV Si)/cm2 and is suitable for the calorimeterlinks 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. |
Copyright/License
| Preprint: (License: CC-BY-4.0) |