"Study of matter and antimatter components in cosmic rays in Low Earth Orbit with Pamela experiment"
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講演者 : Marco Casolino 氏
(INFN & University of Roma Tor Vergata 博士)
日時 : 2009/4/7(Tue.)15:00 〜 17:00
場所 : 素粒子物理国際研究センター会議室(理学部1号館10階1017号室)
Abstract :
Pamela is a 500kg satellite-borne experiment designed to study with great accuracy
cosmic rays of galactic, solar, and trapped nature in a wide energy range (protons:
80 MeV-700 GeV, electrons 50 MeV-400 GeV). Main objective is the study of the antimatter
component: antiprotons (80 MeV-190 GeV), positrons (50 MeV-270 GeV) and search for
antimatter with a precision of the order of 10-8.
The experiment, housed on board the Russian Resurs-DK1 satellite,was launched on June,
15th 2006 in a 350 - 600 km orbit with an inclination of 70 degrees. We will describe
the apparatus and the various solutions adopted to meet the stringent needs of a spaceborne detector.
The scientific objectives, the performance and the operations of Pamela in its first 1000
days of flight will be illustrated. First results on protons of trapped, secondary and
galactic nature - as well as measurements of the December 13 2006 Solar Particle Event
will be shown.
Finally, the measurements and possible implications of the antiproton and positron
components up to 100 GeV in galactic cosmic rays in the context of indirect search for dark
matter signature will also be discussed.
講演資料 : [ ]
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