J. Alozy's research while affiliated with CERN and other places

... The board incorporates analog summation functionality for up to four channels, improving time resolution within SiPM segmentation. The ASIC delivers precise time-of-arrival data and linear energy measurements across a wide input peak current range, from 5 µA to 25 mA, with a power consumption of approximately 12 mW per channel at default settings [23]. ...

... This will help improving performance in the lowest energy range of the large-sized telescopes of CTA. A future ASIC, based on the 8-channel FastIC ASIC developed in a 65 nm technology node [25,26] is planned for the future upgrade of the LSTs cameras using SiPMs. This new ASIC should have 16 input channels, the capability to perform an active summation in groups of four channels, the option to add the signals from these 16 channels into a single output, a mechanism to capture the level of continuous night sky background (NSB) noise and the possibility to drive cable loads. ...

... The magnets are sandwiched between three tracking stations, each composed of two tracking layers 1 cm apart, to measure both the particle bending angle through each magnet, as well as its bending radius through the full spectrometer. To satisfy the performance specifications of URPD, in particular the extreme high hit rates (up to ≈60 MHz/cm 2 ) and the harsh operating environment, the tracking stations will be implemented with hybrid pixel detector read out by the latest version of the widely used, both on ground-based experiment and in space, Medipix/Timepix series of readout ASICs [43], the Timepix4 [44]. Not only can the Timepix4-based pixel detectors provide excellent tracking performance under high rate and hostile operating conditions, they can also provide good timing and particle charge measurements for particle identification. ...

... We have designed an experimental setup to measure the energy spectra and the angular distributions of the TR X-rays emitted by fast electrons and positrons crossing different radiators. Similar measurements were performed in the past at the CERN SPS with beams of 20 GeV/ electrons and of 120, 180 and 290 GeV/ muons, using silicon strip detectors [6], silicon pixel detectors [7,8] and GaAs pixel detectors [8,9]. Parallel to the measurements, an effort to develop accurate Monte Carlo simulations of the TR process is being carried out [10]. ...

... Timepix2 (developed in 2018 in a 130nm CMOS process) is a replacement for the Timepix device which went out of production as the 250nm process was ended by the foundry. Timepix2 [69] addresses a number of known limitations of Timepix. When very large charges are deposited within one pixel of Timepix the ToT measurement becomes non monotonic with the input charge and collapses. ...

... For the majority of currently used data capture systems, application specifc integrated circuits (ASICs) that do not necessitate autonomous submodule design are frequently used. For instance, Medipix read-out chips developed by the CERNhosted collaboration are directly used in numerous photoncounting systems [2,10,11]. Despite the simplicity of use and excellent performance, it cannot be independently manufactured or upgraded. ...

... Semiconductor detector devices also look set to see considerable readout development, with a huge range of hybrid pixel detector ASICs currently available, many of which are not currently applied to IGCs. These new ASICs offer advanced readout capabilities, such as exceptional temporal resolution, improved active areas, spectroscopic imaging capabilities, and on-chip charge-sharing correction [139][140][141]. ...

... We have designed an experimental setup to measure the energy spectra and the angular distributions of the TR X-rays emitted by fast electrons and positrons crossing different radiators. Similar measurements were performed in the past at the CERN SPS with beams of 20 GeV/ electrons and of 120, 180 and 290 GeV/ muons, using silicon strip detectors [6], silicon pixel detectors [7,8] and GaAs pixel detectors [8,9]. Parallel to the measurements, an effort to develop accurate Monte Carlo simulations of the TR process is being carried out [10]. ...

... The CALI is based on Silicon Photo-Multiplier (SiPM) on-tile technology [6,7], offering flexibility, scalability, cost effectiveness, and high performance for high-granularity calorimeters [8]. In recent years, the SiPM-on-tile approach has become a popular option for various experiments [9][10][11][12][13][14][15][16][17]. A significant application of this technology is in the HG-CAL upgrade for CMS at the high-luminosity LHC [17,18]. ...

... Chromium compensation of GaAs (GaAs:Cr) is an effective method to passivate the problematic EL2 + states [83], which can lead to high resistivity (∼ 10 9 Ωcm) and carrier mobilities while enabling active layers up to 1 mm in thickness [80]. Dachs et al. have recently compared the performance of chromium-compensated gallium arsenide pixel detectors to silicon detectors [84]. The sensors were tested at the CERN SPS facility with 20 GeV/c electrons, muons with 120 ∼ 290 GeV/c. ...