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An anomalous positron abundance in cosmic rays with energies 1.5–100 GeV PAMELA First Result from the Alpha Magnetic Spectrometer on the International Space Station: Precision Measurement of the Positron Fraction in Primary Cosmic Rays The Fermi LAT cosmic-ray electron-positron spectrum

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Page 1: An anomalous positron abundance in cosmic rays with energies 1.5–100 GeV PAMELA First Result from the Alpha Magnetic Spectrometer on the International

An anomalous positron abundance in cosmic rays with

energies 1.5–100 GeV

PAMELA

First Result from the Alpha Magnetic Spectrometer on the

International Space Station: Precision Measurement of the

Positron Fraction in Primary Cosmic Rays of 0.5–350 GeV

AMS

The Fermi LAT cosmic-ray electron-positron

spectrum

Page 2: An anomalous positron abundance in cosmic rays with energies 1.5–100 GeV PAMELA First Result from the Alpha Magnetic Spectrometer on the International
Page 3: An anomalous positron abundance in cosmic rays with energies 1.5–100 GeV PAMELA First Result from the Alpha Magnetic Spectrometer on the International

Disegno concettuale dell’esperimentoElevata reiezione p/e

+ misura nuclei

-Ridondanza TRD + CALO ad alta energia (+ND)-Marcatura antiprotone, antinuclei

(S4)

anti

neutron detector(ND)

& ND

b+trigger

b+trigger

b+trigger

g+particle id.

E+particle id.

pmeasurement

Page 4: An anomalous positron abundance in cosmic rays with energies 1.5–100 GeV PAMELA First Result from the Alpha Magnetic Spectrometer on the International

PAMELA – Integrazione

Page 5: An anomalous positron abundance in cosmic rays with energies 1.5–100 GeV PAMELA First Result from the Alpha Magnetic Spectrometer on the International

Pamela Container + Pamela Mass-Thermal-Model

at TsSKB Samara / Russia

Page 6: An anomalous positron abundance in cosmic rays with energies 1.5–100 GeV PAMELA First Result from the Alpha Magnetic Spectrometer on the International

AGILE payload

IASF Milano

IASF Bologna

IASF Roma

INFN Roma2 -IASF Milano

Page 7: An anomalous positron abundance in cosmic rays with energies 1.5–100 GeV PAMELA First Result from the Alpha Magnetic Spectrometer on the International

TKRCALACD

CAL

TKR

TKR

CAL

Lo Strumento principale di GLAST : il Large Area Telescope

GLAST e’ caratterizzato da un utilizzo su vasta scala di moderne tecnologie di rivelazione provate con successo nel campo della fisica delle particelle : rivelatori al silicio e calorimetro elettromagnetico con cristalli di CsI

TKR (auto-triggerante)• 16 “torri” • 83m2 di Si complessivi• 11500 SSD, ~ 1M canali

CAL (imaging)• 96 cristalli di CsI per torre• 8 strati of 12 cristalli ciascuno• ciascun strato ruotato di 90º

Calorimeter

DAQ Electronics

Tracker

ACDThermal blanket

Grid

Calorimeter (energy measurement)

Particle tracking detectors

Conversion foils

Charged particle anticoincidence shield

e+

e-

Page 8: An anomalous positron abundance in cosmic rays with energies 1.5–100 GeV PAMELA First Result from the Alpha Magnetic Spectrometer on the International

Ricerca di antimateria

Page 9: An anomalous positron abundance in cosmic rays with energies 1.5–100 GeV PAMELA First Result from the Alpha Magnetic Spectrometer on the International
Page 10: An anomalous positron abundance in cosmic rays with energies 1.5–100 GeV PAMELA First Result from the Alpha Magnetic Spectrometer on the International
Page 11: An anomalous positron abundance in cosmic rays with energies 1.5–100 GeV PAMELA First Result from the Alpha Magnetic Spectrometer on the International
Page 12: An anomalous positron abundance in cosmic rays with energies 1.5–100 GeV PAMELA First Result from the Alpha Magnetic Spectrometer on the International
Page 13: An anomalous positron abundance in cosmic rays with energies 1.5–100 GeV PAMELA First Result from the Alpha Magnetic Spectrometer on the International