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Nuclear physics for Galactic Cosmic Rays in the AMS-02 era
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 email@example.com) Location: conference room, LPSC (Laboratoire de Physique Subatomique et Cosmologie) LOC: David Maurin (firstname.lastname@example.org), Françoise PETIOT (email@example.com, 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).
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).
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?
GCR antiprotons, antideuterons, e+, e-, and gamma-rays: introduction [10'+5']15m
(Laboratoire d'Annecy-le-Vieux de Physique Théorique LAPTH)
Impact of cross section uncertainties on GCR e+ and e- fluxes [7'+5']12m
(Lab. Univers & Particules de Montpellier (LUPM))
Impact of cross section uncertainties on diffuse gamma-ray calculations [7'+5']12m
(LAPTh & IAP)
Geant4 models for anti-protons, positrons, and gamma [15'+6']21m
Prospects of better measurements with NA61/SHINE at CERN SPS [15'+5']20m