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Towards Understanding the Origin of Cosmic-Ray Electrons
/ Aguilar, M (Madrid, CIEMAT) ; Ali Cavasonza, L (IAS, Julich ; JCHP, Julich) ; Alpat, B (INFN, Perugia ; Perugia U.) ; Ambrosi, G (INFN, Perugia ; Perugia U.) ; Arruda, L (LIP, Lisbon) ; Attig, N (IAS, Julich ; JCHP, Julich) ; Azzarello, P (Geneva U.) ; Bachlechner, A (IAS, Julich ; JCHP, Julich) ; Barao, F (LIP, Lisbon) ; Barrau, A (LPSC, Grenoble) et al.
/AMS
Precision results on cosmic-ray electrons are presented in the energy range from 0.5 GeV to 1.4 TeV based on 28.1×106 electrons collected by the Alpha Magnetic Spectrometer on the International Space Station. In the entire energy range the electron and positron spectra have distinctly different magnitudes and energy dependences. [...]
2019 - 9 p.
- Published in : Phys. Rev. Lett. 122 (2019) 101101
Fulltext from Publisher: PDF;
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Towards Understanding the Origin of Cosmic-Ray Positrons
/ Aguilar, M (Madrid, CIEMAT) ; Ali Cavasonza, L (IAS, Julich ; JCHP, Julich) ; Ambrosi, G (INFN, Perugia) ; Arruda, L (LIP, Lisbon) ; Attig, N (IAS, Julich ; JCHP, Julich) ; Azzarello, P (Geneva U.) ; Bachlechner, A (IAS, Julich ; JCHP, Julich) ; Barao, F (LIP, Lisbon) ; Barrau, A (LPSC, Grenoble) ; Barrin, L (CERN) et al.
/AMS
Precision measurements of cosmic ray positrons by the Alpha Magnetic Spectrometer on the International Space Station are presented up to 1 TeV based on 1.9 million positrons.The positron flux exhibits a significant excess starting from $25.2 \pm 1.8$ GeV followed by a sharp drop-off above $284^{+91}_{-64}$ GeV.In the entire energy range the positron flux is well described by the sum of a diffuse termassociated with low energy secondary positrons produced in the collision of cosmic rays, and a new source term of high energy positrons with a finite energy cutoff. The finite cutoff energy of the source term, $E_s$, is established with a significance of more than $4 \sigma$, and it's value is determined to be $E_s = 810^{+310}_{-180}$ GeV.These experimental data on cosmic ray positrons show that, at high energies, they predominantly originate either from dark matter collisions or from new astrophysical sources..
2019 - 9 p.
- Published in : Phys. Rev. Lett. 122 (2019) 041102
Fulltext from Publisher: PDF;
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Observation of Complex Time Structures in the Cosmic-Ray Electron and Positron Fluxes with the Alpha Magnetic Spectrometer on the International Space Station
/ Aguilar, M (Madrid, CIEMAT) ; Cavasonza, L Ali (IAS, Julich ; JCHP, Julich) ; Ambrosi, G (INFN, Perugia ; Perugia U.) ; Arruda, L (LIP, Lisbon) ; Attig, N (IAS, Julich ; JCHP, Julich) ; Aupetit, S (LPSC, Grenoble) ; Azzarello, P (Geneva U.) ; Bachlechner, A (IAS, Julich ; JCHP, Julich) ; Barao, F (LIP, Lisbon) ; Barrau, A (LPSC, Grenoble) et al.
/AMS
We present high-statistics, precision measurements of the detailed time and energy dependence of the primary cosmic-ray electron flux and positron flux over 79 Bartels rotations from May 2011 to May 2017 in the energy range from 1 to 50 GeV. For the first time, the charge-sign dependent modulation during solar maximum has been investigated in detail by leptons alone. [...]
2018 - 8 p.
- Published in : Phys. Rev. Lett. 121 (2018) 051102
Fulltext: PDF;
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Operation of the Fermilab Accumulator for Medium Energy Proton-Antiproton Physics
/ Bharadwaj, V K ; Bhat, C ; Broemmelsiek, D ; Church, M ; Gormley, M ; Hahn, A ; Harms, E ; Hsueh, S Y ; Jackson, G ; MacLachlan, J et al.
1990
External link: Published version from JACoW
In : 2nd European Particle Accelerator Conference, Nice, France, 12 - 16 Jun 1990, pp.617
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The Use of the Fermilab Antiproton Accumulator in Medium Energy Physics Experiments
/ Bharadwaj, V K ; Church, M ; Harms, E ; Hsueh, S Y ; Kells, W ; MacLachlan, J ; Marsh, W ; McCarthy, J ; Peoples, John ; Peterson, D et al.
1989
External link: Published version from JACoW
In : 1st European Particle Accelerator Conference, Rome, Italy, 7 - 11 Jun 1988, pp.395
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Results from Longitudinal Impedance Measurements in the Fermilab Tevatron
/ Jackson, G ; Bogacz, S A ; Chou, P J ; Colestock, Patrick L ; Harfoush, F A ; Lü, X ; Ng, K Y ; Pellico, W ; Sullivan, T ; Wang, X Q
1991
External link: Published version from JACoW
In : 14th IEEE Particle Accelerator Conference, San Francisco, CA, USA, 6 - 9 May 1991, pp.1749
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Design and Commissioning of Flying Wires in the Fermilab Accumulator
/ Wang, X Q ; Groves, T ; Hahn, A A ; Jackson, G ; Marriner, J P ; Martin, K ; Misek, J
1991
External link: Published version from JACoW
In : 14th IEEE Particle Accelerator Conference, San Francisco, CA, USA, 6 - 9 May 1991, pp.1180
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