M. Keil
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View article: "If You Want to Encrypt It Really, Really Hardcore...": User Perceptions of Key Transparency in WhatsApp
"If You Want to Encrypt It Really, Really Hardcore...": User Perceptions of Key Transparency in WhatsApp Open
WhatsApp is the first popular chat app to roll out a real-world, large-scale implementation of key transparency. If implemented correctly, key transparency allows users to check whether they are currently victim of a Machine-in-the-Middle …
View article: Characterization of analogue Monolithic Active Pixel Sensor test structures implemented in a 65 nm CMOS imaging process
Characterization of analogue Monolithic Active Pixel Sensor test structures implemented in a 65 nm CMOS imaging process Open
Analogue test structures were fabricated using the Tower Partners Semiconductor Co. CMOS 65 nm ISC process. The purpose was to characterize and qualify this process and to optimize the sensor for the next generation of Monolithic Active Pi…
View article: “It’s Just a Lot of Prerequisites”: A User Perception and Usability Analysis of the German ID Card as a FIDO2 Authenticator
“It’s Just a Lot of Prerequisites”: A User Perception and Usability Analysis of the German ID Card as a FIDO2 Authenticator Open
Two-factor authentication (2FA) overcomes the insecurity of passwords by adding a second factor to the authentication process. A variant of 2FA, which is even phishing-resistant unlike, e.g., SMS-based implementations, is offered by the FI…
View article: Low Mach Preconditioning for Turbomachinery Flow Simulations With Cavities and Variable Gas Compositions
Low Mach Preconditioning for Turbomachinery Flow Simulations With Cavities and Variable Gas Compositions Open
The optimization of turbomachines increasingly relies on highly accurate numerical performance predictions. Loss predictions require the cavities of the machine to be included in numerical simulations. Commonly, in cavities, the velocity o…
View article: The charge sensitivity calibration of the upgraded ALICE Inner Tracking System
The charge sensitivity calibration of the upgraded ALICE Inner Tracking System Open
The ALICE detector is undergoing an upgrade for run 3 at the LHC. A new Inner Tracking System (ITS) is part of this upgrade. The upgraded ALICE ITS features the ALPIDE, a monolithic active pixel sensor. Due to IC fabrication variations and…
View article: EUDAQ—a data acquisition software framework for common beam telescopes
EUDAQ—a data acquisition software framework for common beam telescopes Open
EUDAQ is a generic data acquisition software developed for use in conjunction with common beam telescopes at charged particle beam lines. Providing high-precision reference tracks for performance studies of new sensors, beam telescopes are…
View article: Future physics opportunities for high-density QCD at the LHC with heavy-ion and proton beams
Future physics opportunities for high-density QCD at the LHC with heavy-ion and proton beams Open
The future opportunities for high-density QCD studies with ion and proton beams at the LHC are presented. Four major scientific goals are identified: the characterisation of the macroscopic long wavelength Quark-Gluon Plasma (QGP) properti…
View article: Front end optimization for the monolithic active pixel sensor of the ALICE Inner Tracking System upgrade
Front end optimization for the monolithic active pixel sensor of the ALICE Inner Tracking System upgrade Open
ALICE plans to replace its Inner Tracking System during the second long shut down of the LHC in 2019 with a new 10 m(2) tracker constructed entirely with monolithic active pixel sensors. The TowerJazz 180 nm CMOS imaging Sensor process has…
View article: A CMOS 0.18 μm 600 MHz clock multiplier PLL and a pseudo-LVDS driver for the high speed data transmission for the ALICE Inner Tracking System front-end chip
A CMOS 0.18 μm 600 MHz clock multiplier PLL and a pseudo-LVDS driver for the high speed data transmission for the ALICE Inner Tracking System front-end chip Open
This work presents the 600 MHz clock multiplier PLL and the pseudo-LVDS driver which are two essential components of the Data Transmission Unit (DTU), a fast serial link for the 1.2 Gb/s data transmission of the ALICE inner detector front-…
View article: MAPS development for the ALICE ITS upgrade
MAPS development for the ALICE ITS upgrade Open
Monolithic Active Pixel Sensors (MAPS) offer the possibility to build pixel detectors and tracking layers with high spatial resolution and low material budget in commercial CMOS processes. Significant progress has been made in the field of…
View article: Upgrade of the ALICE Inner Tracking System
Upgrade of the ALICE Inner Tracking System Open
ALICE (A Large Ion Collider Experiment) is studying heavy-ion collisions at the CERN LHC, with the aim of forming, under extreme conditions of temperature and energy density, a Quark-Gluon Plasma (QGP) and studying its properties. The ALIC…
View article: Low-power priority Address-Encoder and Reset-Decoder data-driven readout for Monolithic Active Pixel Sensors for tracker system
Low-power priority Address-Encoder and Reset-Decoder data-driven readout for Monolithic Active Pixel Sensors for tracker system Open
Active Pixel Sensors used in High Energy Particle Physics require low power consumption to reduce the detector material budget, low integration time to reduce the possibilities of pile-up and fast readout to improve the detector data capab…