Enrico Junior SCHIOPPA

Enrico Junior SCHIOPPA

Ricercatore Universitario

Settore Scientifico Disciplinare FIS/04: FISICA NUCLEARE E SUBNUCLEARE.

Dipartimento di Matematica e Fisica "Ennio De Giorgi"

Ex Collegio Fiorini - Via per Arnesano - LECCE (LE)

Ufficio, Piano terra

High energy physics, upgrade of the ATLAS inner tracker, Machine Learning and its applications to data analysis at the ATLAS experiment and to other fields.

Recapiti aggiuntivi

Dipartimento di Matematica e Fisica "Ennio De Giorgi"

Ex Collegio Fiorini - Via per Arnesano - LECCE (LE)

Ufficio 228, primo piano

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Curriculum Vitae

2019-current Researcher at Dipartimento di Matematica e Fisica “Ennio De Giorgi”, Università del Salento and INFN Lecce

2016/19 CERN Fellow, Geneva, Switzerland

2014/16 postdoctoral researcher at the University of Geneva, Geneva, Switzerland

2014 Ph.D. in Physics, Nikhef and the University of Amsterdam, Amsterdam, The Netherlands

2010 Degree in Nuclear and Subnuclear Physics, La Sapienza, Rome, Italy

 

Expertise:

R&D of particle detectors for high energy physics and beyond

Semiconductor detectors, pixel detectors, silicon photomultipliers

Instrumentation for high energy physcis

Data analysis, statistical treatment of data

Scientific computing

Image reconstruction in medical physics

Didattica

A.A. 2019/2020

METODI SPERIMENTALI PER LA FISICA NUCLEARE E SUBNUCLEARE

Corso di laurea FISICA

Tipo corso di studio Laurea Magistrale

Lingua ITALIANO

Crediti 7.0

Ripartizione oraria Ore Attività frontale: 49.0

Anno accademico di erogazione 2019/2020

Per immatricolati nel 2019/2020

Anno di corso 1

Struttura DIPARTIMENTO DI MATEMATICA E FISICA "ENNIO DE GIORGI"

Percorso FISICA SPERIMENTALE DELLE INTERAZIONI FONDAMENTALI

Sede Lecce

Torna all'elenco
METODI SPERIMENTALI PER LA FISICA NUCLEARE E SUBNUCLEARE

Corso di laurea FISICA

Settore Scientifico Disciplinare FIS/04

Tipo corso di studio Laurea Magistrale

Crediti 7.0

Ripartizione oraria Ore Attività frontale: 49.0

Per immatricolati nel 2020/2021

Anno accademico di erogazione 2020/2021

Anno di corso 1

Semestre Secondo Semestre (dal 08/03/2021 al 11/06/2021)

Lingua ITALIANO

Percorso FISICA SPERIMENTALE DELLE INTERAZIONI FONDAMENTALI (A64)

A good knowledge of classical electrodynamics and special relativity is essential. Basic concepts of quantum mechanics are recommended. Some notions of particle physics might facilitate the comprehension, but are not strictly necessary.

Short introduction to modern nuclear and subnuclear physics. Particle accelerators: linear accelerators, cyclotrons, synchrotrons, synchrotron light. Semiconductors detectors. Detector systems: trackers, calorimeters, particle identification, trigger, data acquisition. Calorimetry. Examples of experiments in particle physics and astroparticle physics. Examples of applications to nuclear physics. Detection techniques for gravitational waves.

The student acquires the basic knowledge to understand the functioning of the instrumentation and the methods which are typically employed in nuclear and subnuclear physics

Lecture

Oral examination

 

Accelerators

Historical accelerators: Van der Graaf and tandem. Linear accelerators. Cyclotrons, synchrocyclotrons and isocronous cyclotrons.

Decoupling of longitudinal and transverse modes. Dipoles. Quadrupoles. Transport matrices. Hills equation and its solutions in terms of the Twiss parameters. Betatron function and transverse emittance.

Effects causing deviations from the ideal orbit. Quadrupole errors and tune variations. Closed orbit, dipole errors and integer resonances. Momentum compaction factor and dispersion function. Natural chromaticity. Sextupoles. Resonances from magnet effects. Transverse-longitudinal couplings.

Longitudinal dynamics. Relativistic transition. Radiofrequency cavities. Synchrotron oscillations. Bunch structure. Acceleration. Phase inversion at the relativistic transition.

Solution of Maxwell equations in covariant form: retarded potentials. Lienard-Wiechert expression for the radiation potential emitted by a moving charge. Derivation of the electromagnetic field from the Lineard-Wiechert potential. Relativistic generalization of Larmor's formula: linear acceleration vs circular acceleration.

Computation of the angular spectrum of synchrotron light. Computation of the energy spectrum and polarization states of synchrotron light. Wigglers and undulators.

Examples of accelerators: electrostatic machines, famous accelerators. The CERN accelerators complex. Future colliders. The ESRF synchrotron.

 

Semiconductor detectors

Band structure of solids. Calculation of the density of charge carriers. Calculation of the chemical potential. Mass action law. Semiconductor materials and their use in radiation detection: silicon, diamond, germanium, high-Z materials.

Doping. The pn junction. Junction capacitance. Johnson-Nyquist noise. Biased pn junction, single sided pn-junction, leakage current. Small pixel effect. The MOS structure.

Strip detectors. Pixel detectors. Hybrid vs monolithic. Typical pixel functionalities.

Examples of application: X-ray computed tomography with spectral resolution, other examples.

Silicon photomultipliers.

 

Spectrometry and tracking

Measurement of momentum from the sagitta. Influence of multiple scattering and resolution. 

Alignment techniques.

Fit to circular trajectory: the Chernov-Oskorov solution and the Karimaki solution.

The Kalman filter.

 

Calorimetry

Electromagnetic showers. Differences between e/p and gamma showers. Hadronic showers and the role of the pi0.

Homogeneous and sampling calorimeters. Radiation length. Moliere radius. Interaction length. Pre-shower detectors. Effect of soft photons and neutrons on the sampling fraction.

Linearity of response. Quenching, saturation and the Texas tower effect. Containment. Components of the resolution of a calorimeter.

Compensation of a hadronic calorimeter. Dual readout.

 

Particle identification

Time of flight. Transition radiation.  Cherenkov light.

 

Particle detector systems

General purpose detectors. Trigger and data acquisition. 

The LHC experiments, with details on the ATLAS detector. Techniques and experiments for detecting neutrinos. Cosmic ray experiments, with details on the CTA UV cameras. 

Examples of detectors for physics beyond the standard model: dark matter, neutrinoless double beta decay, axions.

 

Detection of gravitational waves

Einstein equations. Linearized solutions and the TT gauge. Properties of GW. Sources of GW and the quadrupole formalism. 

GW emitted by a binary system. Luminosity. Coalescence. Signals from typical sources.

Detection by means of resonant masses. Interferometers. Laser power. Resonant cavities and dual recycling. Laser stability. Radiation pressure, quantum limit, mirror suspension and gravitational noise.

Example of GW experiments. How to extract information from a GW waveform.

The material of the class references several textbooks and scientific papers. When treating each topic, the teacher will make sure to point the students to the proper literature.

METODI SPERIMENTALI PER LA FISICA NUCLEARE E SUBNUCLEARE (FIS/04)
METODI SPERIMENTALI PER LA FISICA NUCLEARE E SUBNUCLEARE

Corso di laurea FISICA

Settore Scientifico Disciplinare FIS/04

Tipo corso di studio Laurea Magistrale

Crediti 7.0

Ripartizione oraria Ore Attività frontale: 49.0

Per immatricolati nel 2019/2020

Anno accademico di erogazione 2019/2020

Anno di corso 1

Semestre Secondo Semestre (dal 02/03/2020 al 05/06/2020)

Lingua ITALIANO

Percorso FISICA SPERIMENTALE DELLE INTERAZIONI FONDAMENTALI (A64)

Sede Lecce

A good knowledge of classical electrodynamics and special relativity is essential. Basic concepts of quantum mechanics are recommended. Some notions of particle physics might facilitate the comprehension, but are not strictly necessary.

Short introduction to modern nuclear and subnuclear physics. Particle accelerators: linear accelerators, cyclotrons, synchrotrons, synchrotron light. Semiconductors detectors. Detector systems: trackers, calorimeters, particle identification, trigger, data acquisition. Calorimetry. Examples of experiments in particle physics and astroparticle physics. Examples of applications to nuclear physics. Detection techniques for gravitational waves.

The student acquires the basic knowledge to understand the functioning of the instrumentation and the methods which are typically employed in nuclear and subnuclear physics

Lecture

Oral examination

 

Accelerators

Historical accelerators: Van der Graaf and tandem. Linear accelerators. Cyclotrons, synchrocyclotrons and isocronous cyclotrons.

Decoupling of longitudinal and transverse modes. Dipoles. Quadrupoles. Transport matrices. Hills equation and its solutions in terms of the Twiss parameters. Betatron function and transverse emittance.

Effects causing deviations from the ideal orbit. Quadrupole errors and tune variations. Closed orbit, dipole errors and integer resonances. Momentum compaction factor and dispersion function. Natural chromaticity. Sextupoles. Resonances from magnet effects. Transverse-longitudinal couplings.

Longitudinal dynamics. Relativistic transition. Radiofrequency cavities. Synchrotron oscillations. Bunch structure. Acceleration. Phase inversion at the relativistic transition.

Solution of Maxwell equations in covariant form: retarded potentials. Lienard-Wiechert expression for the radiation potential emitted by a moving charge. Derivation of the electromagnetic field from the Lineard-Wiechert potential. Relativistic generalization of Larmor's formula: linear acceleration vs circular acceleration.

Computation of the angular spectrum of synchrotron light. Computation of the energy spectrum and polarization states of synchrotron light. Wigglers and undulators.

Examples of accelerators: electrostatic machines, famous accelerators. The CERN accelerators complex. Future colliders. The ESRF synchrotron.

 

Semiconductor detectors

Band structure of solids. Calculation of the density of charge carriers. Calculation of the chemical potential. Mass action law. Semiconductor materials and their use in radiation detection: silicon, diamond, germanium, high-Z materials.

Doping. The pn junction. Junction capacitance. Johnson-Nyquist noise. Biased pn junction, single sided pn-junction, leakage current. Small pixel effect. The MOS structure.

Strip detectors. Pixel detectors. Hybrid vs monolithic. Typical pixel functionalities.

Examples of application: X-ray computed tomography with spectral resolution, other examples.

Silicon photomultipliers.

 

Spectrometry and tracking

Measurement of momentum from the sagitta. Influence of multiple scattering and resolution. 

Alignment techniques.

Fit to circular trajectory: the Chernov-Oskorov solution and the Karimaki solution.

The Kalman filter.

 

Calorimetry

Electromagnetic showers. Differences between e/p and gamma showers. Hadronic showers and the role of the pi0.

Homogeneous and sampling calorimeters. Radiation length. Moliere radius. Interaction length. Pre-shower detectors. Effect of soft photons and neutrons on the sampling fraction.

Linearity of response. Quenching, saturation and the Texas tower effect. Containment. Components of the resolution of a calorimeter.

Compensation of a hadronic calorimeter. Dual readout.

 

Particle identification

Time of flight. Transition radiation.  Cherenkov light.

 

Particle detector systems

General purpose detectors. Trigger and data acquisition. 

The LHC experiments, with details on the ATLAS detector. Techniques and experiments for detecting neutrinos. Cosmic ray experiments, with details on the CTA UV cameras. 

Examples of detectors for physics beyond the standard model: dark matter, neutrinoless double beta decay, axions.

 

Detection of gravitational waves

Einstein equations. Linearized solutions and the TT gauge. Properties of GW. Sources of GW and the quadrupole formalism. 

GW emitted by a binary system. Luminosity. Coalescence. Signals from typical sources.

Detection by means of resonant masses. Interferometers. Laser power. Resonant cavities and dual recycling. Laser stability. Radiation pressure, quantum limit, mirror suspension and gravitational noise.

Example of GW experiments. How to extract information from a GW waveform.

The material of the class references several textbooks and scientific papers. When treating each topic, the teacher will make sure to point the students to the proper literature.

METODI SPERIMENTALI PER LA FISICA NUCLEARE E SUBNUCLEARE (FIS/04)

Pubblicazioni

Currently, author of the ATLAS collaboration and the RD42 collaboration. Previously, author of the CTA consortium.

Selected publications, sorted by year

Year 2020:

J. Alozy et al., Studies of the spectral and angular distributions of transition radiation using a silicon pixel sensor on a Timepix3 chip, NIM A, Volume 961, 1 May 2020, 163681, https://doi.org/10.1016/j.nima.2020.163681

M. Miranova et al., Measurement of the relative response of TowerJazz Mini-MALTA CMOS prototypes at Diamond Light Source, NIM-A, 956, 163381 (2020), https://doi.org/10.1016/j.nima.2019.163381

M. Dyndal et al., MiniMALTA: Radiation hard pixel designs for small-electrode monolithic CMOS sensors for the High Luminosity LHC, JINST 2020 15 P02005, https://arxiv.org/abs/1909.11987

E.J. Schioppa, Measurement results on the MALTA monolithic pixel detector, NIM-A, Volume 958, 1 April 2020, 162404, https://doi.org/10.1016/j.nima.2019.162404

Year 2019:

E.J. Schioppa, First measurements of the spectral and angular distribution of transition radiation using a silicon pixel sensor on a TimePix3 chip, NIM-A, 936, pp 523-526, (2019), https://doi.org/10.1016/j.nima.2018.11.062

F. Loparco et al., Measurement of the energy spectra and of the angular distribution of the Transition Radiation with a silicon strip detector, J. Phys.: Conf. Ser. 1390 012115, https://iopscience.iop.org/article/10.1088/1742-6596/1390/1/012115

F. Dachs et al., Update on the TowerJazz CMOS DMAPS development for the ATLAS ITk, PoS ICHEP2018 (2019) 802, https://doi.org/10.22323/1.340.0802

J. Alozy et al., Identification of particles with Lorentz factor up to 10e4 with Transition Radiation Detectors based on micro-strip silicon detectors, NIM-A, 927, pp 1-13, (2019), https://arxiv.org/abs/1901.11265

F. Daches et al., Transition radiation measurements with a Si and a GaAs pixel sensor on a Timepix3 chip, NIM-A, Volume 958, 1 April 2020, 162037, https://doi.org/10.1016/j.nima.2019.03.092

B. Hiti et al., Development of the monolithic MALTA CMOS sensor for the ATLAS ITK outer pixel layer, PoS TWEPP2018  (2018) 155, https://doi.org/10.22323/1.343.0155

R. Cardella et al., MALTA: an asynchronous readout CMOS monolithic pixel detector for the ATLAS High-Luminosity upgrade, JINST, 2019 14 no. 06 C06019, https://doi.org/10.1088/1748-0221/14/06/C06019

K. Moustakas et al., CMOS Monolithic Pixel Sensors based on the Column-Drain Architecture for the HL-LHC Upgrade, NIM-A, 936, pp 604-607, (2019), https://doi.org/10.1016/j.nima.2018.09.100

Year 2018:

I. Berdalovic et al., MALTA: a CMOS pixel sensor with asynchronous readout for the ATLAS High-Luminosity upgrade, 2018 IEEE Nuclear Science Symposium and Medical Imaging Conference Proceedings (NSS/MIC), Sydney, Australia, 2018, pp. 1-4, https://ieeexplore.ieee.org/document/8824349

I. Berdalovic et al., Monolithic pixel development in TowerJazz 180 nm CMOS for the outer pixel layers in the ATLAS experiment, JINST, 13, C01023, http://iopscience.iop.org/article/10.1088/1748-0221/13/01/C01023/meta

Year 2017:

E. J. Schioppa, Exact solutions for silicon photomultipliers models and application to measurements, https://arxiv.org/abs/1710.11410

H. Pernegger et al., First tests of a novel radiation hard CMOS sensor process for Depleted Monolithic Active Pixel Sensors, JINST, 2017 12 P06008, http://iopscience.iop.org/article/10.1088/1748-0221/12/06/P06008/meta

M. Heller, E.J. Schioppa, A. Porcelli et al., An innovative silicon photomultiplier digitizing camera for gamma-ray astronomy, Eur. Phys. J. C, (2017) 77:47, https://arxiv.org/abs/1607.03412

The CTA Consortium, Science with the Cherenkov Telescope Array, World Scientific, ISBN: 978-981-3270-08-4, https://arxiv.org/abs/1709.07997

Year 2016:

J. A. Aguilar et al., The front-end electronics and slow control of large area SiPM for the SST-1M camera for the CTA experiment, NIM-A 830, pp 219-232 (2016) http://dx.doi.org/10.1016/j.nima.2016.05.086

J. A. Aguilar et al, Characterisation and commissioning of the SST-1M camera for the Cherenkov Telescope Array, NIM-A, 845, pp 350-354, (2016), http://dx.doi.org/10.1016/j.nima.2016.05.130

J. A. Aguilar, The Single Mirror Small Size Telescope (SST-1M) of the Cherenkov Telescope Array, Proc. SPIE 9906, Ground-based and Airborne Telescopes VI, 990636 (July 27, 2016), http://dx.doi.org/10.1117/12.2233362

E.J. Schioppa et al., An innovative SiPM-based camera for gamma-ray astronomy with the small size telescopes of the Cherenkov Telescope Array, JINST Vol 11, as Proceedings of the 2015 Topical Workshop on Electronics for Particle Physics (TWEPP2015), 2016 1748-0221 11 C01038, http://iopscience.iop.org/article/10.1088/1748-0221/11/01/C01038

J. A. Aguilar et al., Front-end and slow control electronics for large area SiPMs used for the single mirror Small Size Telescope (SST-1M) of the Cherenkov Telescope Array (CTA), Proc. SPIE 9915, High Energy, Optical, and Infrared Detectors for Astronomy VII, 99152T (July 27, 2016), http://dx.doi.org/10.1117/12.2232982

Year 2015:

E.J. Schioppa et al., Study of Charge Diffusion in a Silicon Detector Using an Energy Sensitive Pixel Readout Chip, IEEE Trans. Nuc. Sc., vol. 62, no. 5, pp. 2349-2359, Oct. 2015, http://ieeexplore.ieee.org/document/7272141/

E.J. Schioppa et al., The SST-1M camera for the Cherenkov Telescope Array, Proceedings of the 34th International Cosmic Ray Conference (ICRC2015), The Hague, The Netherlands, PoS(ICRC2015)930, https://arxiv.org/abs/1508.06453

E.~J. Schioppa et al., Solving CT reconstruction with a particle physics tool (RooFit), Proceedings of the 6th International Conference on Numerical Analysis, pp 234-239, http://numan2014.amcl.tuc.gr/

E.J. Schioppa et al., Prospects for spectral CT with Medipix detectors, Proceedings of Science, PoS (TIPP2014) 246, https://pos.sissa.it/213/246/pdf

E. Prandini et al., Camera calibration strategy of the SST-1M prototype of the Cherenokov Telescope Array, Proceedings of the 34th International Cosmic Ray Conference (ICRC2015), The Hague, The Netherlands, https://arxiv.org/abs/1508.06397

P. Rajda et al., DigiCam - Fully Digital Compact Read-out and Trigger Electronics for the SST-1M Telescope proposed for the Cherenkov Telescope Array, Proceedings of the 34th International Cosmic Ray Conference (ICRC2015), The Hague, The Netherlands, https://arxiv.org/abs/1508.06082

R. Moderski et al., Performance of the SST-1M telescope for the Cherenkov Telescope Array observatory, Proceedings of the 34th International Cosmic Ray Conference (ICRC2015), The Hague, The Netherlands, https://arxiv.org/abs/1508.06459

T. Montaruli et al., The small size telescope projects for the Cherenkov Telescope Array, Proceedings of the 34th International Cosmic Ray Conference (ICRC2015), The Hague, The Netherlands, https://arxiv.org/abs/1508.06472

K. Seweryn et al., Development of the optical system for the SST-1M telescope of the Cherenkov Telescope Array observatory, Proceedings of the 34th International Cosmic Ray Conference (ICRC2015), The Hague, The Netherlands, https://arxiv.org

/abs/1508.06795

A. Porcelli et al., Software design for the control system for Small-Size Telescopes with single-mirror of the Cherenkov Telescope Array, Proceedings of the 34th International Cosmic Ray Conference (ICRC2015), The Hague, The Netherlands, https://arxiv.org/abs/1508.07472

S. Toscano et al., Using muon rings for the optical throughput calibration of the SST-1M prototype for the Cherenkov Telescope Array, Proceedings of the 34th International Cosmic Ray Conference (ICRC2015), The Hague, The Netherlands, https://arxiv.org/abs/1509.00266

Year 2014:

E.J. Schioppa, The color of X-rays, Spectral X-ray computed tomography using energy sensitive pixel detectors, Uitgeverij BOXPress, ’s-Hertogenbosch, ISBN 9789088919831, https://cds.cern.ch/record/1971202?ln=en

E.J. Schioppa et al., Measurement of the energy response function of a silicon pixel detector readout by a Timepix chip using synchrotron radiation, JINST 9, P08002, http://iopscience.iop.org/article/10.1088/1748-0221/9/08/P08002

Year 2013:

E. J. Schioppa et al., Construction and test of an X-ray CT setup for material resolved 3D imaging with Medipix based detectors, JINST, 7, C10007, http://iopscience.iop.org/article/10.1088/1748-0221/7/10/C10007/meta

Consulta le pubblicazioni su IRIS

Temi di ricerca

Particle physics: instrumentation and detectors. Semiconductor radiation detectors. Data analysis techniques: statistical methods and artificial intelligence. Promoting synergies between academy and industry.