Nuclear physics for Galactic Cosmic Rays in the AMS-02 era



LPSC Grenoble 53, rue des Martyrs 38026 Grenoble Cedex
Scientific goals: the aim of the workshop is to gather experts in the field of Galactic Cosmic-Rays (GCR) and nuclear physics in order to discuss topics at the crossroad between the two fields. For instance, a key question is to assess if and how fragmentation models (in the range 100 MeV/n-10 GeV/n) used in GCR physics for data analysis (e.g., CREAM, AMS, ...) and their interpretation can be improved. The workshop will also provide the opportunity to develop  new collaborations between the participants.
Workshop keypoints: the workshop is structured as follows: i) presententation from the GCR scientists to the nuclear physics community about their requirements; ii) review on the latest developments on nuclear fragmentation and its modelling. The second day of the workshop will focus on i) higher energy hadronic interactions, and ii) neutrons and GCRs. A large fraction of the time will be left for discussions.
Financial support: the workshop is supported by the PNHE (Programme National des Hautes Energies) and the CPTG (Centre de Physique Théorique de Grenoble).
N.B.: financial support may be granted for PhD students and post-doc working in France (contact
Location: conference room, LPSC (Laboratoire de Physique Subatomique et Cosmologie)
LOC: David Maurin (, Françoise PETIOT (, for administrative matters), Emmanuelle Vernay.
SOC: Sébastien CHABOD (LPSC), Laurent DEROME (LPSC), Fanny FARGET (GANIL), William Gillard (LPSC), Grégoire KESSEDJIAN (LPSC), Ulli KOESTER (ILL), David MAURIN (LPSC), Jean-Stéphane RICOL (LPSC), Pierre SALATI (LAPTh), Vincent TATISCHEFF (CSNSM).
  • Adrien Cheminet
  • Adrien CHEMINET
  • Alain BOUDARD
  • Alain BOUDARD
  • Alberto Oliva
  • Alessandro Bruno
  • Alessandro BRUNO
  • Armand Fiasson
  • Boris Popov
  • Boris Popov
  • David Maurin
  • David Maurin
  • Divic RAPIN
  • Fairouz Malek
  • Fanny Farget
  • Fernando Barao
  • Fernando Barao
  • Fiorenza Donato
  • Fiorenza Donato
  • Frank Goldenbaum
  • Grégoire Kessedjian
  • Ingo Leya
  • Ingo LEYA
  • Jean-stephane Ricol
  • Jose Benlliure
  • Julien Lavalle
  • Julien Lavalle
  • Jürgen Kiener
  • Karim Louedec
  • Karim Louedec
  • Karl-Ludwig Klein
  • KLEIN Karl-Ludwig
  • Laurent Derome
  • Laurent Derome derome
  • Marion Habiby
  • Nicola Tomassetti
  • Nicola Tomassetti
  • Pierre SALATI
  • Pierre Saouter
  • Sebastien Chabod
  • Shibi Rajagopalan
  • Suchita Kulkarni
  • Sylvie Rosier Lees
  • Sylvie Rosier Rosier Lees
  • Timur Delahaye
  • Timur Delahaye
  • Ulli Koster
  • Vincent Tatischeff
  • Vladimir Ivantchenko
  • Vladimir Ivantchenko
  • William GILLARD
  • Monday, 3 December
    • 09:45 10:20
      Coffee 35m
    • 10:20 10:25
      Welcome address (Serge Kox, Director) 5m
    • 10:25 10:30
      Goals and format of the Workshop 5m
      Speaker: Mr David Maurin (LPSC)
    • 10:35 12:40
      Galactic Cosmic Rays (GCRs)

      The session is dedicated to a review of GCR studies (experiments and phenomenology). We start with a general review of their importance to study standard astrophysical mechanisms (and also to study dark matter indirect searches). Focusing on the nuclear component, the issue of fragmentation is emphasised: the limitation on CR phenomenology studies brought by the cross sections uncertainties are detailed. The impact of these cross sections is also discussed in the light of the CR flux reconstruction from various contemporary experiments (the balloon-borne CREAM, the PAMELA satellite, AMS-01 on the shuttle and AMS-02 on the ISS).

      Convener: Vincent Tatischeff (CSNSM)
      • 10:35
        Overview of GCRs [15'+10'] 25m
        Speaker: Dr Fiorenza Donato (Dept. Theoretical Physics)
      • 11:00
        Nuclear fragmentation and GCR phenomenology [15'+10'] 25m
        Speaker: Mr David Maurin (LPSC)
      • 11:25
        CREAM balloon: fragmentation in the residual atmosphere [10'+5'] 15m
        Speaker: Laurent Derome derome (LPSC)
      • 11:40
        PAMELA satellite: fragmentation in the instrument [15'+10'] 25m
        Speaker: Dr Alessandro Bruno (INFN, Sezione di Bari)
      • 12:05
        AMS-01 on the shuttle: analysis of LiBeB fluxes and fragmentation [12'+8'] 20m
        Speaker: Dr Nicola Tomassetti (INFN Perugia & University)
      • 12:25
        Overview and challenges for AMS-02 [10'+5'] 15m
        Speaker: Dr Sylvie Rosier Rosier Lees (LAPP)
    • 12:40 14:15
      Lunch @ LPSC cantine 1h 35m
    • 14:15 15:15

      review of meteoritic studies + cross-section measurements/models used

      Convener: Vincent Tatischeff (CSNSM)
      • 14:15
        Nuclide production in extraterrestrial matter [45'+15'] 1h
        Speaker: Prof. Ingo LEYA (Universität Bern)
    • 15:15 18:05
      Nuclear physics in the 50 MeV/n - 10 GeV/n range

      Review on models, measurements, facilities...

      Convener: Fanny FARGET (GANIL)
      • 15:15
        Overview of the fragmentation mechanisms [25'+15'] 40m
        Speaker: Prof. Jose Benlliure (Universidad de Santiago de Compostela)
      • 15:55
        Review on existing data/databases and facilities [25'+15'] 40m
        Speaker: Dr Frank Goldenbaum (INSTITUT FÜR KERNPHYSIK (IKP))
      • 16:35
        Coffee break 25m
      • 17:00
        Review on existing fragmentation codes [25'+15'] 40m
        Speaker: Dr Alain BOUDARD (CEA-IRFU/SPhN)
      • 17:40
        Geant4 models for hadron production [15'+10'] 25m
        Speaker: Prof. Vladimir Ivanchenko (CERN)
    • 18:05 18:50

      What actions to take?
      How to collaborate ?
      What is possible/desired?
      Implementation in GEANT@CERN?

    • 20:00 22:00
      Cheese-based social dinner 2h
  • Tuesday, 4 December
    • 09:00 10:40
      Coalescence and higher energy interaction

      Another important topic in GCRs is the measurements of secondary anti-protons, anti-deuterons, and electrons and positrons (in the 100 MeV - 1 TeV range) produced in the Galaxy (CR interacting on the interstellar gas, dominated by H and He). Their production relies on sometimes old measurements and simple models. The differences between the various approaches are now at the level or larger than the statistical uncertainties on the GCR data. Moreover, interations in the GCR detectors (material Z>2) must be accounted for. What are the best hadronic packages for such calculations? Is it possible to have new measurements of these cross sections from colliders?

      • 09:00
        GCR antiprotons, antideuterons, e+, e-, and gamma-rays: introduction [10'+5'] 15m
        Speaker: Mr Pierre SALATI (Laboratoire d'Annecy-le-Vieux de Physique Théorique LAPTH)
      • 09:15
        Impact of cross section uncertainties on GCR e+ and e- fluxes [7'+5'] 12m
        Speaker: Dr Julien Lavalle (Lab. Univers & Particules de Montpellier (LUPM))
      • 09:27
        Impact of cross section uncertainties on diffuse gamma-ray calculations [7'+5'] 12m
        Speaker: Dr Timur Delahaye (LAPTh & IAP)
      • 09:39
        Geant4 models for anti-protons, positrons, and gamma [15'+6'] 21m
        Speaker: Prof. Vladimir Ivantchenko (CERN)
      • 10:00
        Prospects of better measurements with NA61/SHINE at CERN SPS [15'+5'] 20m
        Speaker: Dr Boris Popov (LPNHE(Paris) & JINR(Dubna))
      • 10:20
        Discussions 20m
    • 10:40 11:00
      Coffee break 20m
    • 11:00 12:40
      Neutrons detectors, solar modulation and GCRs

      GCRs suffer from solar modulation in the solar cavity. A good proxy for the level of modulation is given by neutron monitors. What information can we get from them?

      Convener: Laurent Derome derome (LPSC)
      • 11:00
        Solar modulation and GCRs: [10'+5'] 15m
        Speaker: Dr Fernando Barao (LPSC/LIP-IST)
      • 11:15
        Neutron Monitor data to monitor GCR data [8'+5'] 13m
        Speaker: Mr David Maurin (LPSC)
      • 11:28
        GCR monitoring at Auger site [7'+5'] 12m
        Speaker: Mr Karim Louedec (LAL)
      • 11:40
        European Network of Neutron Monitors [15'+10'] 25m
        Speaker: Prof. Karl-Ludwig KLEIN (Observatoire de Paris-Meudon)
      • 12:05
        Neutron production in atmosphere [15'+10'] 25m
        Speaker: Mr Adrien CHEMINET (ONERA)
    • 12:40 14:30
      Lunch @ LPSC cantine 1h 50m
    • 14:30 15:30

      What to expect from collider measurements/MC approaches?
      Possible collaborations on Neutron Monitors?