S. Stracka
A5107276056- Particle physics theoretical and experimental studies
- Quantum Chromodynamics and Particle Interactions
- High-Energy Particle Collisions Research
- Neutrino Physics Research
- Dark Matter and Cosmic Phenomena
- Particle Detector Development and Performance
- Atomic and Subatomic Physics Research
- Medical Imaging Techniques and Applications
- Black Holes and Theoretical Physics
- Particle Accelerators and Free-Electron Lasers
- Superconducting Materials and Applications
- Computational Physics and Python Applications
- Nuclear physics research studies
- CCD and CMOS Imaging Sensors
- Radiation Detection and Scintillator Technologies
- Atomic and Molecular Physics
- Cosmology and Gravitation Theories
- Distributed and Parallel Computing Systems
- Cell Image Analysis Techniques
- Cold Atom Physics and Bose-Einstein Condensates
- Stochastic processes and statistical mechanics
- Astrophysics and Cosmic Phenomena
- Radiation Therapy and Dosimetry
- Scientific Research and Discoveries
- Particle accelerators and beam dynamics
Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
2015-2024
Istituto Nazionale di Fisica Nucleare
2016-2022
Roma Tre University
2022
University of Pisa
2015-2019
Universidade Federal do Rio de Janeiro
2014-2019
Scuola Normale Superiore
2014-2018
Centro Brasileiro de Pesquisas Físicas
2013-2018
Fermi National Accelerator Laboratory
2018
École Polytechnique Fédérale de Lausanne
2017
University of Maryland, College Park
2017
Einstein's general theory of relativity from 19151 remains the most successful description gravitation. From 1919 solar eclipse2 to observation gravitational waves3, has passed many crucial experimental tests. However, evolving concepts dark matter and energy illustrate that there is much be learned about gravitating content universe. Singularities in lack a quantum gravity suggest our picture incomplete. It thus prudent explore exotic physical systems. Antimatter was unknown Einstein 1915....
The spectrum of the hydrogen atom has played a central part in fundamental physics over past 200 years. Historical examples its importance include wavelength measurements absorption lines solar by Fraunhofer, identification transition Balmer, Lyman and others, empirical description allowed wavelengths Rydberg, quantum model Bohr, capability electrodynamics to precisely predict frequencies, modern 1S-2S Hänsch precision few parts 1015. Recent technological advances have us focus on...
The observation of hyperfine structure in atomic hydrogen by Rabi and co-workers the measurement zero-field ground-state splitting at level seven parts 1013 are important achievements mid-twentieth-century physics. work that led to these also provided first evidence for anomalous magnetic moment electron, inspired Schwinger's relativistic theory quantum electrodynamics gave rise maser, which is a critical component modern navigation, geo-positioning very-long-baseline interferometry systems....
Abstract Antihydrogen, a positron bound to an antiproton, is the simplest anti-atom. Its structure and properties are expected mirror those of hydrogen atom. Prospects for precision comparisons two, as tests fundamental symmetries, driving vibrant programme research. In this regard, limiting factor in most experiments availability large numbers cold ground state antihydrogen atoms. Here, we describe how improved synthesis process results maximum rate 10.5 ± 0.6 atoms trapped detected per...
One of the goals synthesizing and trapping antihydrogen is to study validity charge–parity–time symmetry through precision spectroscopy on anti-atoms, but yield achieved in recent experiments must be significantly improved before this can realized. Antihydrogen atoms are commonly produced by mixing antiprotons positrons stored a nested Penning-Malmberg trap, which was ALPHA an autoresonant excitation antiprotons, injecting them into positron plasma. In work, hybrid numerical model developed...
We demonstrate a novel detection method for the cyclotron resonance frequency of an electron plasma in Penning–Malmberg trap. With this technique, is used as situ diagnostic tool measurement static magnetic field and microwave electric The motion excited by radiation temperature change measured non-destructively monitoring plasma's quadrupole mode frequency. spatially resolved strength can be inferred from found through These measurements were extensively recently reported demonstration...
The Silicon Vertex Detector (SVD) is the main diagnostic tool in ALPHA-experiment. It provides precise spatial and timing information of antiproton (antihydrogen) annihilation events (vertices), most importantly, SVD capable directly identifying analysing single events, thereby forming basis ALPHA's analysis. This paper describes ALPHA its upgrade, installed new neutral atom trap.
We report on the performance of a specialized processor capable reconstructing charged particle tracks in realistic LHC silicon tracker detector, at same speed readout and with sub-microsecond latency. The is based an innovative pattern-recognition algorithm, called “artificial retina algorithm”, inspired from vision system mammals. A prototype has been designed, simulated, implemented Tel62 boards equipped high-bandwidth Altera Stratix III FPGA devices. first step towards real-time track...
We present the results of an R&D study a specialized processor capable precisely reconstructing events with hundreds charged-particle tracks in pixel detectors at 40 MHz, thus suitable for processing LHC full crossing frequency. For this purpose we design and test massively parallel pattern-recognition algorithm, inspired by studies visual images brain as it happens nature. find that high-quality tracking large is possible sub-$\mu$s latencies when algorithm implemented modern, high-speed,...
We present results of an R&D study for a specialized processor capable precisely reconstructing, in pixel detectors, hundreds charged-particle tracks from high-energy collisions at 40 MHz rate. apply highly parallel pattern-recognition algorithm, inspired by studies the processing visual images brain as it happens nature, and describe detail efficient hardware implementation high-speed, high-bandwidth FPGA devices. This is first detailed demonstration reconstruction offline-quality makes...
We present the results of a detailed simulation artificial retina pattern-recognition algorithm, designed to reconstruct events with hundreds charged-particle tracks in pixel and silicon detectors at LHCb LHC crossing frequency $40\,\rm MHz$. Performances algorithm are assessed using official Monte Carlo samples experiment. found performances for comparable full reconstruction algorithm.
We present the latest results on prototype of a tracking processor capable reconstructing events in silicon-strip tracker at about 40 MHz event rate with sub-microsecond latency. The is based an advanced pattern-recognition algorithm, called “artificial retina”, inspired to vision system mammals. design and implement one first functional this DAQ board Alters Stratix III FPGAs. Then, order test maximum capability, we port optimize high-speed equipped Altera V Future applications novel...
A detection scheme based on real-time measurement of antihydrogen annihilations during radiation injection is presented, which allows an efficient use the trapped atoms for laser and microwave spectroscopy. The application to spectroscopy, yielded first evidence induced spin-flip transitions in [1], reported.
Knowledge of the residual gas composition in ALPHA experiment apparatus is important our studies antihydrogen and nonneutral plasmas. A technique based on autoresonant ion extraction from an electrostatic potential well has been developed that enables study vacuum trap. Computer simulations allow interpretation measurements provide under operating conditions typical those used experiments to produce, trap, antihydrogen. The methods may also be applicable a range atomic molecular trap where...
We report on the R\&D for a first prototype of silicon tracker based an alternative approach fast track finding. The working principle is inspired from neurobiology, in particular by processing visual images brain as it happens nature. It extensive parallelisation data distribution and pattern recognition. In this work we present design practical device that consists telescope single-sided detectors; describe acquisition system implementation finding algorithms using available digital logic...