The direct response of Silicon PhotoMultipliers being traversed by a MIP charged particle have been studied in systematic way for the first time. Using beam test data, time resolution and crosstalk probability measured. A characterization SiPM means laser is also reported. results obtained different sensors indicate measured around 40-70 ps. Although particles are expected to traverse only one ...

Charged particles accelerated by magnetic reconnection in astrophysical plasmas should get stuck flux ropes. Simulations show that kink instabilities set them free. n

We consider the coupled Maxwell{Lorentz equations for a single charge with a rigid charge distribution subject to slowly varying external potentials. In the adiabatic limit, to lowest order, the motion of the charge is governed by an eeective Hamiltonian. In the next order we obtain, as a small correction, the radiation reaction containing q {terms. This equation has a stable center manifold an...

standard model. The hypothetical particles are assumed to be pair-produced in pp̄ collisions giving a signature of two reconstructed muon-like objects with high invariant mass and time-offlights indicative of heavy particles. Since no excess over background is observed, cross-section limits for the pair-production of stable staus and charginos are set. Mass limits of 140 GeV for a higgsino-like ...

The inverse depth dose profile i.e. the increase of the dose with penetration depth make heavy charged particles like protons and heavy ions an ideal tool for the radiotherapy of deep-seated tumors. For carbon ions this good dose profile is potentiated by an additional increase in the relative biological effectiveness (RBE) towards the end of the particle range. The physical and biological basi...