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The second level trigger of the pamela space experiment
KTH, School of Engineering Sciences (SCI), Physics.
2007 (English)In: Proceedings of the 30th International Cosmic Ray Conference, ICRC 2007, Universidad Nacional Autonoma de Mexico , 2007, no OG PART 1, 487-490 p.Conference paper (Refereed)
Abstract [en]

PAMELA is a satellite-borne experiment designed to study the charged component of the cosmic radiation of galactic, solar and trapped nature. The main scientific objective is the study of the antimatter component of cosmic rays over a wide range of energies. PAMELA is mounted on the Resurs DK1 satellite that was launched on June 15th 2006 and is orbiting the Earth on a semipolar (70) elliptical (350 600 km2) orbit. The experiment has a foreseen lifetime of at least 3 years. PAMELA is built around a permanent magnet silicon spectrometer, surrounded by a plastic scintillator anticoincidence shield. An electromagnetic calorimeter is used for particle identification and energy measurements. If PAMELA data exceed the storage allowance on the satellite or the daily downlink quota (now 20 GB), a second level trigger may be activated by uplink from ground. Information from the anticoincidence system and from the calorimeter will be included in the second level trigger condition, providing a selective reduction of data. The data reduction and the systematic uncertainties in the proton and electron spectra are evaluated with in-orbit data and compared to simulations.

Place, publisher, year, edition, pages
Universidad Nacional Autonoma de Mexico , 2007. no OG PART 1, 487-490 p.
Keyword [en]
Data reduction, Digital storage, Experiments, Particle detectors, Anticoincidence shield, Anticoincidence systems, Electromagnetic calorimeter, Particle identifications, Plastic scintillator, Satellite-borne experiment, Scientific objectives, Systematic uncertainties
National Category
Physical Sciences
URN: urn:nbn:se:kth:diva-164201ScopusID: 2-s2.0-84899495976OAI: diva2:805032
30th International Cosmic Ray Conference, ICRC 2007, 3 July 2007 through 11 July 2007, Merida, Yucatan, Mexico

QC 20150414

Available from: 2015-04-14 Created: 2015-04-14 Last updated: 2015-04-14Bibliographically approved

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