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Fabrication of new generation particle detectors

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Alkynylation of Thiols with Ethynylbenziodoxolone (EBX) Reagents: alpha- or beta- pi-Addition?

Jérôme Waser, Matthew Wodrich, Paola Caramenti

The alkynylation of thiols with EthynylBenziodoXolone (EBX) reagents is a fast and chemoselective method for the synthesis of thioalkynes. Combined experimental and computational studies are reported, which led to the identification of a new mechanism for ...

2016

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An ultra-low leakage current Application Specific Integrated Circuit (ASIC) called Utopia (Ultralow Picoammeter) has been designed and fabricated in AMS 0.35 mu m CMOS, in order to be used as the front-end for ionising radiation monitoring at CERN. It is b ...

Iop Publishing Ltd2016

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We report on photocurrent generation by X-ray irradiation in methylammonium lead iodide CH3NH3PbI3 single crystals. We observed 75% of charge collection efficiency in millimeter sized samples. This efficiency is partially due to the high photon absorption ...

American Chemical Society2015

Collective Autoionization in Multiply-Excited Systems: A novel ionization process observed in Helium Nanodroplets

Marcel Drabbels, Nils Benedict Brauer, Robert Richter

Free electron lasers (FELs) offer the unprecedented capability to study reaction dynamics and image the structure of complex systems. When multiple photons are absorbed in complex systems, a plasma-like state is formed where many atoms are ionized on a fem ...

Nature Publishing Group2014

Scintillation detectors based on silicon microfluidic channels

Philippe Renaud, Alessandro Mapelli, Pietro Maoddi

Microfluidic channels obtained by SU-8 photolithography and filled with liquid scintillators were recently demonstrated to be an interesting technology for the implementation of novel particle detectors. The main advantages of this approach are the intrins ...

Institute of Physics2014

Radiation hardness of high-Q silicon nitride microresonators for space compatible integrated optics

Tobias Kippenberg, Victor Brasch

Integrated optics has distinct advantages for applications in space because it integrates many elements onto a monolithic, robust chip. As the development of different building blocks for integrated optics advances, it is of interest to answer the importan ...

Optical Soc Amer2014

An intercomparison of the performances of active neutron detectors was carried out in pulsed neutron fields in the new HiRadMat facility at CERN. Five detectors were employed: four of them (two ionization chambers and two rem counters) are routinely employ ...

Pergamon-Elsevier Science Ltd2014

SU-8 as a Material for Microfabricated Particle Physics Detectors

Philippe Renaud, Alessandro Mapelli, Sébastien Jiguet, Pietro Maoddi

Several recent detector technologies developed for particle physics applications are based on microfabricated structures. Detectors built with this approach generally exhibit the overall best performance in terms of spatial and time resolution. Many proper ...

MDPI2014

Making MEMS more suited for Space: Assessing the proton-radiation tolerance of structural materials for microsystems in orbit

Herbert Shea, Antonia Neels, Alex Dommann, Tobias Bandi

We report on the susceptibility of structural MEMS materials to proton radiation damage. Radiation tests at spacerelevant doses were conducted on MEMS resonators. The two materials examined were single crystal silicon and SU-8, which are both in widespread ...

2013

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Hydrogenated amorphous silicon betavoltaic devices are studied both by simulation and experimentally. Devices exhibiting a power density of 0.1 μW/cm2 upon Tritium exposure were fabricated. However, a significant degradation of the performance is taking pl ...

2013