Giuseppe LA VACCA - Bicocca
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Giuseppe L A VACCA
Contact Information
Università degli Studi di Milano Bicocca
Dipartimento di Fisica “G. Occhialini”
Piazza della Scienza, 3
I-20126 - Milano, ITALY
Phone: +39 02 6448 2354
Mobile: +39 329 35 15 773
Email: giuseppe.lavacca@mib.infn.it
European Organization for Nuclear Research, CERN
CH-1211 Geneva 23, Switzerland
Phone: +41 22 76 79403
Research Interests
Cosmic Ray Physics and Search for Dark Matter Signatures in the Galaxy
Since 2012, I joined the AMS-02 Milano Bicocca group in the AMS-02 experiment, operating on
the International Space Station (ISS) to study the universe and its origin by searching for antimatter,
Dark Matter (DM) while performing precision measurements of Cosmic Ray (CR) composition and
flux in the range of measured particle energy from GeV up to TeV.
I worked mainly to the scientific data analysis, focusing my activity on the search for possible
anisotropies in the detected primary CR. I contributed to the development of a method for studying
the anisotropy of CR angular distribution, based on the spherical harmonics expansion of the ob-
served sky with respect to the expected isotropic sky. Results for positron anisotropy were published
in Accardo et al. (2014) and an update of the work was recently presented by me at ECRS 2016 on
behalf of the AMS-02 Collaboration.
Moreover, I contributed to the studies related to the back-tracing of CR trajectories in the Earth
magnetic field. These studies are essential not only to correctly reconstruct the CR incoming direc-
tions at the border of the magnetosphere, but also to determine the detailed structure of the rigidity
cut-off maps as function of the ISS positions, needed to select primary CR at lower rigidities. The
internal note Della Torre et al. (2013) reports part of the work that was then included in the official
event selection, as reported e.g. in Aguilar et al. (2015) and following papers.
Cosmic Ray Flux Modulation in the Heliosphere
I contributed to the development of the H EL M OD Model, a Monte Carlo model to simulate the solar
modulation of galactic cosmic rays. In Bobik et al. (2016) I contributed to the progress of both
Forward-in-time and Backward-in-time methods as solutions to the 1D Parker equation, demonstrat-
ing the methods’ equivalence and showing a systematic uncertaintydark components. A series of papers were published on this topic (G. La Vacca et al. 2009, Kris-
tiansen et al. 2009) and the work presented at international conferences.
Since 2008, I joined the DUNE project, then merged in the larger EUCLID mission, which is
a European Space Agency medium-class mission selected for launch in 2020 within the Cosmic
Vision 2015-2025 program. The main goal of EUCLID is to understand the origin of the accelerated
expansion of the universe. I am partially involved into the EUCLID’s Theory Working Group which
is meant to provide a guide to the scientific themes that will underlie the activity of the group during
the preparation of the EUCLID mission.
In view of the EUCLID measurements of weak gravitational lensing, I also studied the effects of
the non-linearities on the evolution of matter perturbations in CQ models. In particular I contributed
to investigate the impact of non-linear corrections on DE parameter estimation on weak lensing
probes (Casarini et al. (2012)) and how to exploit N-body simulations to assess the bias due to the
use of some standard tools for non-linear corrections to the matter power spectra. These results were
included in the paragraphes 1.8.5 (with relative figures) and 2.7.2 of the review of the science goals
of the EUCLID mission, published in Amendola et al. (2013), with a recent update in 2016.
Professional experience
Sep 2017 - now Fixed-term researcher, Department of Physics "G. Occhialini"
Università degli Studi di Milano Bicocca, IT
Oct 2016 - Jun 2017 High School Teacher, Liceo Statale Carlo Tenca, Milano, IT
Oct 2016 - Jan 2017 Teaching Assistant, Department of Physics "G. Occhialini"
Università degli Studi di Milano Bicocca, IT
Aug 2015 - Jul 2016 Postdoctoral Research Associate, Department of Physics "G. Occhialini"
Università degli Studi di Milano Bicocca, IT
Aug 2014 - Jul 2015 Employer-coordinated freelance work, INFN - Sez. Milano Bicocca, IT
Department of Physics "G. Occhialini"
Jan 2014 - Dec 2014 Associated Member of the Personnel (Cooperation Associate), CERN,
Geneve (Switzerland)
Feb 2014 - Jul 2014 Postdoctoral Research Associate, Department of Physics "G. Occhialini"
Università degli Studi di Milano Bicocca, IT
Feb 2013 - Jan 2014 Postdoctoral Research Associate, Department of Physics "G. Occhialini"
Università degli Studi di Milano Bicocca, IT
Feb 2011 - Jan 2013 Postdoctoral Research Associate, Department of Physics "G. Occhialini"
Università degli Studi di Milano Bicocca, IT
Feb 2009 - Jan 2011 Postdoctoral Research Associate, Department of Physics "G. Occhialini"
Università degli Studi di Milano Bicocca, IT
Aug 2008 - Jan 2009 Research Fellow, Department of Physics "G. Occhialini"
Università degli Studi di Milano Bicocca, IT
2Education
Nov 2005 - Oct 2008 PhD in Physics, Università degli Studi di Pavia, IT, Department of Physics
Thesis Title: Focusing on Dark Energy with Weak Gravitational Lensing (PAVIA,
ISBN: 978-88-95767-21-5)
Advisers: Prof. Francesco Miglietta (Univ. of Pavia), Prof. Silvio Bonometto
(Univ. of Milano Bicocca)
Nov 1999 - Jul 2005 Laurea degree (M.Sc.) in Physics, Università degli Studi di Bari, IT
Department of Physics "Michelangelo Merlin", final grade 110/110 cum laude
Thesis Title: Auto-accelerazione cosmologica in geometrie multidimensionali
(Self-accelerated Cosmologies in multidimensional geometries)
Advisers: Prof. Maurizio Gasperini (Univ. of Bari), Prof. Luca Amendola
(Astronomical Observatory of Rome)
Teaching and Advising
• Mentor to Undergraduate Students:
Luca Vergani (M.Sc., Univ. Milano Bicocca, Spring 2008); Andrea Valotti (B.Sc., Univ. Mi-
lano Bicocca, Winter 2010); Dario Scovacricchi (M.Sc., Univ. Trieste, Spring 2012).
• Teaching Assistant for the C++ programming course, first module of the second year laboratory
course of the B.Sc. course in Physics, academic year 2016-2017, Department of Physics "G.
Occhialini", Università degli Studi di Milano Bicocca, IT
• High School Teacher of Mathematics and Physics, Liceo Statale Carlo Tenca, Milano, IT
Other Professional Activities
Referee for JCAP, MNRAS
Invited seminars
Institute for Theoretical Astrophysics, University of Oslo (Norway), June 2011
Astronomical Observatory of Trieste (IT), March 2011
Department of Physics, University of Bari (IT), February 2010
Instituto de Física Corpuscular, Valencia (Spain), January 2010
Talks at International Conferences
• “25th European Cosmic Ray Symposium”, Physics Department of Torino University, Turin
(Italy), 4th-9th September, 2016. Contributed oral presentation in parallel session on behalf of
the AMS02 Collaboration.
• “24th European Cosmic Ray Symposium”, Christian-Albrechts-Universität, Kiel (Germany),
1st-5th September, 2014. Contributed oral presentation in parallel session.
• “14th ICATPP Conference on Astroparticle, Particle, Space Physics and Detectors for Physics
Applications”, Villa Olmo, Como (Italy), 23rd-27th September, 2013. Contributed oral pre-
sentation in parallel session.
3• “The Dark Universe” Conference, Heidelberg (Germany), 04th-07th October 2011. Con-
tributed oral presentation in parallel session.
• “PPC 2010: IV International workshop on the interconnection between Particle Physics and
Cosmology”, Turin (Italy), 12th-16th July 2010. Contributed oral presentation in plenary ses-
sion.
• “GGI-Dark Matter and Dark Energy 2009” Workshop, Galileo Galilei Institute - Firenze (Italy),
March 2009. Contributed oral presentation in plenary session.
• “Interactions in the Dark: physics of Dark Energy-Dark Matter interactions” Lorentz Center -
Leiden (Holland), April 2009. Contributed poster and oral presentation in plenary session.
Scientific production for the AMS-02 collaboration
Internal notes
• S. Della Torre, D. Grandi, G. La Vacca, D. Rozza, M.Tacconi (2013), “Geomagnetic Effects
with AMS-02”
Presentations at Collaboration General Meetings
• “Status report of the anisotropy search methodology”, CERN, 11 June 2015
• “Status report of Cosmic-Ray Dipole Anisotropy studies with AMS-02”, CERN, 17 February
2015
• “Positron and electron dipole anisotropy with AMS-02”, CERN, 25 October 2013
• “Positron Anisotropy Analysis with AMS-02. Part II”, CERN, 20 June 2013
Presentations at Analysis Meetings
• “Study of rigidity dependence in Proton Isotropy with AMS-02”, CERN, 18 November 2014
• “Study of time dependence in Proton Isotropy with AMS-02”, CERN, 23 September 2014
• “Proton Isotropy Analysis with AMS-02: first attempt”, CERN, 15 April 2014
• “Helium Anisotropy Analysis with AMS-02 First attempt”, CERN, 3 December 2013
• “Study of systematic effects on the anisotropy determination due to proton rigidity resolution”,
CERN, 22 October 2013
• “Anisotropy Analysis with AMS-02. Further studies. Part II”, CERN, 1 October 2013
• “Electron Anisotropy Analysis with AMS-02. First attempt. Part II”, CERN, CERN, 16 July
2013
• “Update on Anisotropy studies. Part II”, CERN,
• “Positron anisotropy in AMS data: Methods, Maps and Results”, CERN,
4Academic References
• Prof. Pier Giorgio Rancoita
INFN Milano Bicocca
Piazza della Scienza 3, 20126 Milano, Italy
e-mail: rancoita@mib.infn.it
• Prof. Massimo Gervasi
Physics Department, University of Milano Bicocca
Piazza della Scienza 3, 20126 Milano, Italy
e-mail: gervasi@mib.infn.it
• Prof. Silvio A. Bonometto
Physics Department, Astrophysics Section
University of Trieste
Via Tiepolo 12, 34131 Trieste, Italy
E-mail: bonometto@oats.inaf.it
• Prof. Luca Amendola
Institute for Theoretical Physics
University of Heidelberg
Philosophenweg 16/19, D-69120 Heidelberg, Germany
e-mail: l.amendola@thphys.uni-heidelberg.de
Le dichiarazioni rese nel presente curriculum sono da ritenersi rilasciate ai sensi degli artt. 46 e
47 del D.P.R. 445/2000
Milano, May 27, 2018
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