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1.
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Light Extraction From Scintillating Crystals Enhanced by Photonic Crystal Structures Patterned by Focused Ion Beam
/ Modrzynski, Pawel (University Coll. London) ; Gotszalk, Teodor (Wroclaw Tech. U.) ; Knapitsch, Arno (CERN) ; Kunicki, Piotr (Wroclaw Tech. U.) ; Lecoq, Paul (CERN) ; Moczala, Magdalena (Wroclaw Tech. U.) ; Papakonstantinou, Ioannis (University Coll. London) ; Auffray, Etiennette (CERN)
“Photonic Crystals (PhC)” have been used in a variety of fields as a structure for improving the light extraction efficiency from materials with high index of refraction. In previous work we already showed the light extraction improvement of several PhC covered LYSO crystals in computer simulations and practical measurements. [...]
2016 - 5 p.
- Published in : IEEE Trans. Nucl. Sci. 63 (2016) 644-648
In : 13th International Conference on Inorganic Scintillators and Their Applications, Berkeley, CA, USA, 7 - 12 Jun 2015, pp.644-648
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2.
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Large Scale Production of Photonic Crystals on Scintillators
/ Knapitsch, Arno (CERN) ; Auffray, Etiennette (CERN) ; Barbastathis, George (MIT) ; Chevalier, Celine (Lyon U.) ; Hsieh, Chih-Hung (MIT) ; Kim, Jeong-Gil (MIT) ; Li, Shuai (MIT) ; Marshall, Matthew S J ; Mazurczyk, Radoslaw (Lyon U.) ; Modrzynski, Pawel (CERN) et al.
Heavy inorganic scintillator based detectors are used in various applications. You can find them in high energy physics as well as in nuclear medical imaging systems but also in homeland security radiation monitoring devices. [...]
2016 - 5 p.
- Published in : IEEE Trans. Nucl. Sci. 63 (2016) 639-643
In : 13th International Conference on Inorganic Scintillators and Their Applications, Berkeley, CA, USA, 7 - 12 Jun 2015, pp.639-643
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3.
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Influence of Depth of Interaction upon the Performance of Scintillator Detectors
/ Brown, Mark S. (U. Coll. London) ; Gundacker, Stefan (CERN) ; Taylor, Alaric (U. Coll. London) ; Tummeltshammer, Clemens (U. Coll. London) ; Auffray, Etiennette (CERN) ; Lecoq, Paul (CERN) ; Papakonstantinou, Ioannis (U. Coll. London)
The uncertainty in time of particle detection within a scintillator detector, characterised by the coincidence time resolution (CTR), is explored with respect to the interaction position within the scintillator crystal itself. Electronic collimation between two scintillator detectors is utilised to determine the CTR with depth of interaction (DOI) for different materials, geometries and wrappings. [...]
2014
- Published in : PLoS ONE 9 (2014) e98177
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4.
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5.
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Versatile Transceiver developments
/ Troska, J (CERN) ; Sigaud, C (CERN) ; Papakonstantinou, I (CERN) ; Papadopoulos, S (University Coll. London ; CERN) ; Bobillier, V (CERN) ; Vasey, F (CERN) ; Detraz, S (CERN) ; Storey, S (CERN) ; Soos, C (CERN) ; Stejskal, P (Imperial Coll., London ; CERN)
SLHC experiment upgrades will make substantial use of optical links to enable highspeed data readout and control. The Versatile Link project will develop and assess optical link architectures and components suitable for deployment at SLHC. [...]
2011
- Published in : JINST 6 (2011) C01089
IOP Open Access article: PDF;
In : Topical Workshop on Electronics for Particle Physics 2010, Aachen, Germany, 20 - 24 Sep 2010, pp.C01089
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6.
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A Fully Bidirectional Optical Network With Latency Monitoring Capability for the Distribution of Timing-Trigger and Control Signals in High-Energy Physics Experiments
/ Papakonstantinou, I (CERN) ; Darwazeh, I (University Coll. London) ; Sigaud, C (CERN) ; Papadopoulos, S (CERN) ; Vasey, F (CERN) ; Detraz, S (CERN) ; Storey, S (CERN) ; Soos, C (CERN) ; Stejskal, P (CERN) ; Troska, J (CERN)
The present paper discusses recent advances on a Passive Optical Network inspired Timing-Trigger and Control scheme for the future upgrade of the TTC system installed in the LHC experiments' and more specifically the currently known as TTCex to TTCrx link. The timing PON is implemented with commercially available FPGAs and 1-Gigabit Ethernet PON transceivers and provides a fixed latency gigabit downlink that can carry level-1 trigger accept decisions and commands as well as an upstream link for feedback from the front-end electronics..
2011
- Published in : IEEE Trans. Nucl. Sci. 58 (2011) 1628-1640
IEEE Published version, local copy: PDF;
In : 17th IEEE NPSS Real Time Conference, Lisbon, Portugal, 24 - 28 May 2010, pp.1628-1640
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7.
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Modelling radiation-effects in semiconductor lasers for use in SLHC experiments
/ Stejskal, P (CERN ; Imperial Coll., London) ; Détraz, S (CERN) ; Papadopoulos, S (CERN) ; Papakonstantinou, I (CERN) ; Sigaud, C (CERN) ; Soos, A (CERN) ; Storey, S (CERN) ; Troska, J (CERN) ; Vasey, F (CERN)
Optical link components in the SLHC inner detectors are to be exposed to intense radiation fields during operation, and, hence, their qualification in terms of radiation tolerance is required. We have created a model that describes a semiconductor laser undergoing irradiation to enable the extrapolation to full lifetime total fluences from lower fluence radiation tests [...]
2010
- Published in : JINST 5 (2010) C12033
IOP Open Access Article: PDF;
In : Topical Workshop on Electronics for Particle Physics 2010, Aachen, Germany, 20 - 24 Sep 2010, pp.C12033
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8.
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FPGA-based Bit-Error-Rate Tester for SEU-hardened Optical Links
/ Detraz, S (CERN) ; Silva, S (CERN) ; Moreira, P (CERN) ; Papadopoulos, S (CERN) ; Papakonstantinou, I (CERN) ; Seif El Nasr, S (CERN) ; Sigaud, C (CERN) ; Soos, C (CERN) ; Stejskal, P (CERN) ; Troska, J (CERN) et al.
The next generation of optical links for future High-Energy Physics experiments will require components qualified for use in radiation-hard environments. To cope with radiation induced single-event upsets, the physical layer protocol will include Forward Error Correction (FEC). [...]
CERN, 2009
Published version from CERN: PDF;
In : Topical Workshop on Electronics for Particle Physics, Paris, France, 21 - 25 Sep 2009, pp.636-640 (CERN-2009-006)
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9.
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Characterization of Semiconductor Lasers for Radiation Hard High Speed Transceivers
/ Silva, Sérgio (CERN ; Porto U.) ; Amaral, Luís Santos (CERN) ; Detraz, Stephane (CERN) ; Moreira, Paulo (CERN) ; Papadopoulos, Spyridon (CERN) ; Papakonstantinou, Ioannis (CERN) ; Salgado, Henrique M (Porto U.) ; Sigaud,Christophe (CERN) ; Soos, Csaba (CERN) ; Stejskal, Pavel (CERN) et al.
In the context of the versatile link project, a set of semiconductor lasers were studied and modelled aiming at the optimization of the laser driver circuit. High frequency measurements of the laser diode devices in terms of reflected and transmission characteristics were made and used to support the development of a model that can be applied to study their input impedance characteristics and light modulation properties. [...]
CERN, 2009
Published version from CERN: PDF;
In : Topical Workshop on Electronics for Particle Physics, Paris, France, 21 - 25 Sep 2009, pp.486-490 (CERN-2009-006)
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10.
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Passive Optical Networks for the Distribution of Timed Signals in Particle Physics Experiments
/ Papakonstantinou, I (CERN) ; Soos, C (CERN) ; Papadopoulos,S (CERN) ; Troska, J (CERN) ; Vasey, F (CERN) ; Baron, S (CERN) ; Santos, L (CERN) ; Silva, S (CERN) ; Stejskal, P (CERN) ; Sigaud, C (CERN) et al.
A passive optical network for timing distribution applications based on FPGAs has been successfully demonstrated. Deterministic latency was achieved in the critical downstream direction where triggers are distributed while a burst mode receiver was successfully implemented in the upstream direction. [...]
CERN, 2009
Published version from CERN: PDF;
In : Topical Workshop on Electronics for Particle Physics, Paris, France, 21 - 25 Sep 2009, pp.352-356 (CERN-2009-006)
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