A5107871935- High-Energy Particle Collisions Research
- Particle physics theoretical and experimental studies
- Quantum Chromodynamics and Particle Interactions
- Particle Detector Development and Performance
- Radiation Detection and Scintillator Technologies
- Nuclear reactor physics and engineering
- CCD and CMOS Imaging Sensors
- Dark Matter and Cosmic Phenomena
- Atomic and Subatomic Physics Research
- Radiation Effects in Electronics
- Particle Accelerators and Free-Electron Lasers
- Advanced Data Storage Technologies
- Nuclear physics research studies
- Superconducting Materials and Applications
- Statistical Methods and Bayesian Inference
- Advanced Antenna and Metasurface Technologies
- Distributed and Parallel Computing Systems
- Cosmology and Gravitation Theories
- Advancements in Semiconductor Devices and Circuit Design
- Parallel Computing and Optimization Techniques
- Microwave Engineering and Waveguides
- Antenna Design and Analysis
- Atomic and Molecular Physics
- Computational Physics and Python Applications
- Pulsars and Gravitational Waves Research
European Organization for Nuclear Research
2016-2025
University of Bergen
2016-2024
A. Alikhanyan National Laboratory
2015-2024
Istituto Nazionale di Fisica Nucleare, Sezione di Bologna
2012-2023
University of Houston
2023
Aligarh Muslim University
2022-2023
Comenius University Bratislava
2023
Western Norway University of Applied Sciences
2023
Istituto Nazionale di Fisica Nucleare, Sezione di Cagliari
1994-2022
University of Cagliari
1994-2022
The design, construction, and commissioning of the ALICE Time-Projection Chamber (TPC) is described. It main device for pattern recognition, tracking, identification charged particles in experiment at CERN LHC. TPC cylindrical shape with a volume close to 90 m^3 operated 0.5 T solenoidal magnetic field parallel its axis. In this paper we describe detail design considerations detector operation extreme multiplicity environment central Pb--Pb collisions LHC energy. implementation resulting...
For the upgrade of its Inner Tracking System, ALICE experiment plans to install a new tracker fully constructed with monolithic active pixel sensors implemented in standard 180 nm CMOS imaging sensor process, deep pwell allowing full within pixel. Reverse substrate bias increases tolerance non-ionizing energy loss (NIEL) well beyond 10131MeVneq∕cm2, but does not allow depletion sensitive layer and hence charge collection by drift, mandatory for more extreme radiation tolerance. This paper...
The upgrade of the ATLAS [1] tracking detector for High-Luminosity Large Hadron Collider (LHC) at CERN requires novel radiation hard silicon sensor technologies. Significant effort has been put into development monolithic CMOS sensors but it a challenge to combine low capacitance sensing node with full depletion sensitive layer. Low brings analog power. Depletion layer causes signal charge be collected by drift sufficiently fast separate hits from consecutive bunch crossings (25 ns LHC) and...
The ALTRO (ALICE TPC Read Out) chip is a mixed-signal integrated circuit designed to be one of the building blocks readout electronics for gas detectors. Originally conceived and optimized time projection chamber (TPC) ALICE experiment at CERN LHC, its architecture programmability make it suitable wider class In single chip, analog signals from 16 channels are digitised, processed, compressed, stored in multi-acquisition memory. analog-to-digital converters embedded have 10-bit dynamic range...
The upgrade of the ATLAS tracking detector (ITk) for High-Luminosity Large Hadron Collider at CERN requires development novel radiation hard silicon sensor technologies. Latest developments in CMOS processing offer possibility combining high-resistivity substrates with on-chip high-voltage biasing to achieve a large depleted active volume. We have characterised monolithic pixel sensors (DMAPS), which were produced modified imaging process implemented TowerJazz 180 nm framework ALICE...
ALICE plans an upgrade of its Inner Tracking System for 2018. The development a monolithic active pixel sensor this is described. TowerJazz 180 nm CMOS imaging process has been chosen as it possible to use full in the due offering deep pwell and also different starting materials. ALPIDE alternative approaches based on rolling shutter architecture, aims reduce power consumption integration time by order magnitude below specifications, which would be quite beneficial terms material budget...
Active Pixel Sensors used in High Energy Particle Physics require low power consumption to reduce the detector material budget, integration time possibilities of pile-up and fast readout improve data capability. To satisfy these requirements, a novel Address-Encoder Reset-Decoder (AERD) asynchronous circuit for pixel matrix has been developed. The AERD data-driven architecture operates address encoding reset decoding based on an arbitration tree, allows us only hit pixels. Compared...
ALICE plans to replace its Inner Tracking System during the second long shut down of LHC in 2019 with a new 10 m2 tracker constructed entirely monolithic active pixel sensors. The TowerJazz 180 nm CMOS imaging Sensor process has been selected produce sensor as it offers deep pwell allowing full in-pixel circuitry and different starting materials. First full-scale prototypes have fabricated tested. Radiation tolerance also verified. In this paper development charge sensitive front end...
Microstrip Rotman lenses are multiple beam forming devices for antenna arrays. The research described here has investigated factors limiting the performance of microstrip compared to parallel plate lenses. New techniques sidewall absorption and lens port pointing have been identified demonstrated.
One of the three x-ray detectors CERN Axion Solar Telescope (CAST) experiment searching for solar axions is a time projection chamber (TPC) with multi-wire proportional counter (MWPC) as readout structure. Its design has been optimized to provide high sensitivity detection low intensity signal expected in CAST experiment. A hardware threshold 0.8 keV set safe level during normal data taking periods, and overall efficiency photons coming from conversion 62%. Shielding installed around...
In this paper we present the front end electronics for time projection chamber (TPC) of ALICE experiment. The system, which consists about 570000 channels, is based on two basic units: (a) an analogue ASIC (PASA) that incorporates shaping-amplifier circuits 16 channels; (b) a mixed-signal (ALTRO) integrates each consisting 10-bit 25-MSPS ADC, baseline subtraction, tail cancellation filter, zero suppression and multi-event buffer. complete readout chain contained in cards (FEC), with 128...
The features of the 180nm TowerJazz <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">1</sup> CMOS technology allow for first time use Monolithic Active Pixel Sensors (MAPS) under harsh operational conditions LHC experiments. stringent requirements ALICE Inner Tracking System (ITS) in terms material budget, radiation hardness, readout speed and a low power consumption have thus lead to choice MAPS as baseline option recently approved upgrade ITS...
Monolithic Active Pixel Sensors (MAPS) offer the possibility to build pixel detectors and tracking layers with high spatial resolution low material budget in commercial CMOS processes. Significant progress has been made field of MAPS recent years, they are now considered for upgrades LHC experiments. This contribution will focus on developed ALICE Inner Tracking System (ITS) upgrade manufactured TowerJazz 180 nm imaging sensor process wafers a resistivity epitaxial layer. Several chip...
The Compact Linear Collider (CLIC) is a high-energy high-luminosity linear electron-positron collider under development. It foreseen to be built and operated in three stages, at centre-of-mass energies of 380 GeV, 1.5 TeV 3 TeV, respectively. offers rich physics program including direct searches as well the probing new through broad set precision measurements Standard Model processes, particularly Higgs-boson top-quark sectors. required for such specific conditions imposed by beam dimensions...