CERN Accelerating science

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1.
Radiation Testing of Optical and Semiconductor Components for Radiation-Tolerant LED Luminaires / Floriduz, Alessandro (CERN) ; Devine, James D. (CERN)
An irradiation campaign was conducted to provide guidance in the selection of materials and components for the radiation hardening of LED lights for use in CERN accelerator tunnels. [...]
arXiv:2010.06038.
- 8 p.
Fulltext
2.
High-energy proton irradiation effects on GaN hybrid-drain-embedded gate injection transistors / Floriduz, Alessandro (CERN) ; Devine, James D (CERN)
The characterization of commercial-grade power transistors upon high levels of particle irradiation is required to enable radiation tolerant LED power supplies for the new luminaires of CERN accelerator tunnels, which represent a harsh environment for semiconductor devices. This work describes the effects of 24 GeV/c proton irradiation on commercial GaN hybrid-drain-embedded gate injection transistors (HD-GITs) after a fluence of $5.9 × 10^{14}$ p/cm$^2$. [...]
2020 - 10 p. - Published in : Microelectron. Reliab. 110 (2020) 113656 Fulltext: PDF;
3.
Modelling of proton irradiated GaN-based high-power white light-emitting diodes / Floriduz, Alessandro (CERN) ; Devine, James D (CERN)
We report the effects of high-energy (23 GeV) proton irradiation at large fluences on packaged high-power GaN-based white light-emitting diodes with YAG:Ce phosphors. From optical and electrical measurements, we assume that proton irradiation degrades only the GaN LED die up to fluences of at least $2 \times 10^{14}$p/cm$^{2}$, and we demonstrate that it produces nonradiative recombination centres which increase the leakage current and diminish the carrier density in the quantum wells and hence the output optical power. [...]
2018 - Published in : Jpn. J. Appl. Phys. 57 (2018) 080304 Fulltext: PDF;
4.
Radiation Hardening of LED Luminaires for Accelerator Tunnels / Devine, James D. (CERN) ; Floriduz, Alessandro (CERN)
This paper summarises progress made towards the radiation hardening of LED emergency luminaires for evacuation and emergency response within the underground areas of the CERN accelerator complex. The objective has been to radiation harden existing Commercial Off-The-Shelf (COTS) emergency luminaires to maximise lighting performance, without compromising IEC 60598-2-22 compliance. [...]
arXiv:1609.03481.- 2016-09 - 6 p. - Published in : 10.1109/RADECS.2016.8093210 Fulltext: PDF; External link: Preprint
In : 16th European Conference on Radiation and its Effects on Components and Systems, Bremen, Germany, 19 - 23 Sep 2016, pp.1-6
5.
PierX2 / DEVINE, James Dilwyn (speaker) (CERN)
2015 - 455. Miscellaneous; THE Port - Hackathon in Geneva External links: Talk details; Event details In : THE Port - Hackathon in Geneva
6.
Open mic: The Raspberry Pi Robot Challenge / DEVINE, James Dilwyn (speaker) (CERN)
2015 - 115. IT Lightning Talks (ITLT); IT Lightning Talks: session #5 External links: Talk details; Event details In : IT Lightning Talks: session #5

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