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Proceedings Paper

Radiation-hard optoelectronic data readout for the ATLAS SCT
Author(s): Jan Troska; John D. Dowell; Ingrid-Maria Gregor; Roger J. Homer; Predrag Jovanovic; Gilles Mahout; Igor Mandic; Roy Wastie; A. R. Weidberg; David J. White
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Paper Abstract

The ATLAS experiment is currently in the final pre-production design phase to allow timely installation at the CERN Large Hadron Collider in 2005. The sub-systems closest to the interaction point--the tracking detectors, will be subject to significant total radiation dose at high flux. Optical data transmission has been chosen for the Pixel and SemiConductor Tracker to both deliver timing and control information to the detector modules and transmit tracking data to the remote counting room. Of considerable concern is the radiation hardness, both transient and total dose, of not just the optoelectronic components but also the driver/receiver electronics. In this paper we report on total dose radiation testing of the VCSEL driver and photodiode receiver ASICs designed using a range of techniques in a nominally radiation-soft process. Both ASICs will be shown to be tolerant to a total gamma dose of 100 kGy and a total neutron fluence (1 MeV equiv.) of 2 X 1014 n/cm2, as required for this system. Single-event upset (SEU) studies have also been carried out using a high-energy pion beam, showing the system to be sufficiently robust to SEU at an ATLAS- like particle flux.

Paper Details

Date Published: 26 October 2000
PDF: 8 pages
Proc. SPIE 4134, Photonics for Space Environments VII, (26 October 2000); doi: 10.1117/12.405346
Show Author Affiliations
Jan Troska, Rutherford Appleton Lab. (Switzerland)
John D. Dowell, Univ. of Birmingham (United Kingdom)
Ingrid-Maria Gregor, Univ. of Wuppertal (Germany)
Roger J. Homer, Univ. of Birmingham (United Kingdom)
Predrag Jovanovic, Univ. of Birmingham (United Kingdom)
Gilles Mahout, Univ. of Birmingham (United Kingdom)
Igor Mandic, Institute Josef Stefan (Slovenia)
Roy Wastie, Univ. of Oxford (United Kingdom)
A. R. Weidberg, Univ. of Oxford (United Kingdom)
David J. White, Rutherford Appleton Lab. (United Kingdom)


Published in SPIE Proceedings Vol. 4134:
Photonics for Space Environments VII
Edward W. Taylor, Editor(s)

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