Publications related to FACT - The First G-APD Cherenkov Telescope (first results)

High-Performance CMOS SPAD-Based Sensors for Time-of-Flight PET Applications

Detecting light, photon by photon, has been possible since the 1930s, with the invention of the photomultiplier tube (PMT). However, it is only since the 1970s, that solid-state single-photon detectors have emerged and only since 2003 that a new technology ...

EPFL2022

X-ray imaging detector for radiological applications adapted to the context and requirements of low- and middle-income countries

Jean-Philippe Thiran, René Salathé, Klaus Benedikt Schönenberger, Mario Andres Chavarria Varon, Jérôme Schmid, Hubert Blanchard, Romain Sahli, Sébastien Emmanuel Blanc, Matthias Hüser

This paper describes the development of a novel medical x-ray imaging system adapted to the needs and constraints of low- and middle-income countries. The developed system is based on an indirect conversion chain: a scintillator plate produces visible ligh ...

2022

LenslessPiCam: A Hardware and Software Platform for Lensless Computational Imaging with a Raspberry Pi

Martin Vetterli, Eric Bezzam, Sepand Kashani, Matthieu Martin Jean-André Simeoni

Lensless imaging seeks to replace/remove the lens in a conventional imaging system. The earliest cameras were in fact lensless, relying on long exposure times to form images on the other end of a small aperture in a darkened room/container (camera obscura) ...

2022

Experimental History and the History of Experience: Reconstructing the Scientific Expeditions of the 1770s to Mont Buet

Jérôme Baudry

On September 20, 1770, the brothers Jean-André and Guillaume-Antoine Deluc, two scientists from Geneva, finally reached the summit of Mont Buet (3096m) after two unsuccessful attempts. From this vantage point overlooking the Alps and Mont Blanc, they perfo ...

2022

Dynamics of cavitation bubbles near granular boundaries

Mohamed Farhat, Davide Bernardo Preso, Armand Baptiste Sieber

We study the dynamics of a cavitation bubble near beds of sand of different grain sizes. We use high-speed imaging to observe the motion of the bubble and the sand for different values of the stand-off parameter gamma (dimensionless bubble-boundary distanc ...

CAMBRIDGE UNIV PRESS2022

In vitro and in vivo NIR fluorescence lifetime imaging with a time-gated SPAD camera

Edoardo Charbon, Claudio Bruschini, Arin Can Ülkü

Near-infrared (NIR) fluorescence lifetime imaging (FLI) provides a unique contrast mechanism to monitor biological parameters and molecular events in vivo. Single-photon avalanche diode (SPAD) cameras have been recently demonstrated in FLI microscopy (FLIM ...

Optica Publishing Group2022

Modeling of the response function of CdTe detectors for a hard X-ray synthetic diagnostic

Stefano Coda, Joan Decker

The response function of CdTe detectors used in a hard X-ray spectrometer system (HXRS) on the TCV tokamak fusion experiment is modeled based on the measured energy spectra from multiple gamma-ray sources. The response function consists of an asymmetric Ga ...

2020

Camera Calibration Models and Methods for Corridor Mapping with UAVs

Jan Skaloud, Davide Antonio Cucci, Emmanuel Pierre Quentin Clédat

Camera calibration refers to the modeling of the relationship between the coordinates of object points and their projections on the image plane. This is usually done by parametric models that describe the physical properties of the lens systems and camera ...

2020

Amplitude analysis for the measurement of the photon polarisation in B rightarrow K pi pi gamma decays

Violaine Bellée

This work proposes a method to measure the photon polarisation in

B^+ \rightarrow K^+ \pi^- \pi^+ \gamma

decays and prepares the necessary elements for this measurement using the data sets collected by the LHCb experiment at CERN in

2011

,

2012

, $2016 ...

EPFL2020

Aliasing mitigation in optical microscopy of dynamic biological samples by use of temporally modulated color illumination and a standard RGB camera

Michael Stefan Daniel Liebling, Christian Jaques

Significance: Despite recent developments in microscopy, temporal aliasing can arise when imaging dynamic samples. Modern sampling frameworks, such as generalized sampling, mitigate aliasing but require measurement of temporally overlapping and potentially ...

SPIE-SOC PHOTO-OPTICAL INSTRUMENTATION ENGINEERS2020

FACT - The First G-APD Cherenkov Telescope (first results)

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High-Performance CMOS SPAD-Based Sensors for Time-of-Flight PET Applications

X-ray imaging detector for radiological applications adapted to the context and requirements of low- and middle-income countries

LenslessPiCam: A Hardware and Software Platform for Lensless Computational Imaging with a Raspberry Pi

Experimental History and the History of Experience: Reconstructing the Scientific Expeditions of the 1770s to Mont Buet

Dynamics of cavitation bubbles near granular boundaries

In vitro and in vivo NIR fluorescence lifetime imaging with a time-gated SPAD camera

Modeling of the response function of CdTe detectors for a hard X-ray synthetic diagnostic

Camera Calibration Models and Methods for Corridor Mapping with UAVs

Amplitude analysis for the measurement of the photon polarisation in B rightarrow K pi pi gamma decays

Aliasing mitigation in optical microscopy of dynamic biological samples by use of temporally modulated color illumination and a standard RGB camera

High-Performance CMOS SPAD-Based Sensors for Time-of-Flight PET Applications

LenslessPiCam: A Hardware and Software Platform for Lensless Computational Imaging with a Raspberry Pi

X-ray imaging detector for radiological applications adapted to the context and requirements of low- and middle-income countries

Experimental History and the History of Experience: Reconstructing the Scientific Expeditions of the 1770s to Mont Buet

Dynamics of cavitation bubbles near granular boundaries

In vitro and in vivo NIR fluorescence lifetime imaging with a time-gated SPAD camera

Aliasing mitigation in optical microscopy of dynamic biological samples by use of temporally modulated color illumination and a standard RGB camera

Amplitude analysis for the measurement of the photon polarisation in B rightarrow K pi pi gamma decays

Modeling of the response function of CdTe detectors for a hard X-ray synthetic diagnostic

Camera Calibration Models and Methods for Corridor Mapping with UAVs