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Polar Balloon Experiment for Astrophysics Research (Polar BEAR)A new balloon experiment is proposed for a long duration flight around the North Pole. The primary objective of the experiment is to measure the elemental energy spectra of high-energy cosmic rays in the region up to 10(exp 15) eV. The proposed instrument involves the combination of a large collecting area (approximately 1 x 1 square m) KLEM (Kinematic Lightweight Energy Meter) device with an ionization calorimeter having a smaller collecting area (approximately 0.5 x 0.5 square m) and integrated beneath the KLEM apparatus. This combination has several important advantages. Due to the large aperture (greater than 2 square m sr) of the KLEM device a large exposure factor can be achieved with a long duration balloon flight (2-4 weeks). The calorimeter will collect about 10% of the events already registered by KLEM and provide effective cross-calibration for both energy measurement methods. Details of the experiment and its astrophysical significance will be presented.
Document ID
20020022117
Acquisition Source
Marshall Space Flight Center
Document Type
Conference Paper
Authors
Bashindzhagyan, G.
(Moscow State Univ. Russia)
Adams, James H., Jr.
(NASA Marshall Space Flight Center Huntsville, AL United States)
Bashindzhagyan, P.
(Moscow State Univ. Russia)
Chilingarian, A.
(Academy of Sciences of the Armenian SSR Erivan, Armenia)
Donnelly, J.
(Dublin Inst. for Advanced Studies Ireland)
Drury, L.
(Dublin Inst. for Advanced Studies Ireland)
Egorov, N.
(Research Inst. for Material Science and Technology Zelenograd, Russia)
Golubkov, S.
(Research Inst. for Material Science and Technology Zelenograd, Russia)
Grebenyuk, V.
(Joint Inst. for Nuclear Research Dubna, USSR)
Kalinin, A.
(Joint Inst. for Nuclear Research Dubna, USSR)
Whitaker, Ann F.
Date Acquired
August 20, 2013
Publication Date
January 1, 2001
Subject Category
Space Radiation
Meeting Information
Meeting: ICRC 2001 Conference
Location: Hamburg
Country: Germany
Start Date: August 7, 2001
End Date: August 15, 2001
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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