Title of article :
Beam tests of the balloon-borne ATIC experiment
Author/Authors :
Ganel، نويسنده , , O. and Adams Jr.، نويسنده , , J.H. and AHN، نويسنده , , H.S. and Ampe، نويسنده , , J. and Bashindzhagyan، نويسنده , , G. and Case، نويسنده , , G. and Chang، نويسنده , , J. and Ellison، نويسنده , , S. and Fazely، نويسنده , , A. and Gould، نويسنده , , Eric R. and Granger، نويسنده , , D. and Gunasingha، نويسنده , , R. and Guzik، نويسنده , , T.G. and Han، نويسنده , , Y.J. and Isbert، نويسنده , , J. and Kim، نويسنده , , H.J. and Kim، نويسنده , , K.C. and Kim، نويسنده , , S.K. and Kwon، نويسنده , , Y. and Panasyuk، نويسنده , , A. A. Grishko and M. Yu. Panov، نويسنده , , A. and Price، نويسنده , , B. and Samsonov، نويسنده , , G. and Schmidt، نويسنده , , W.K.H. and Sen، نويسنده , , M. and Seo، نويسنده , , E.S. and Sina، نويسنده , , R. and Sokolskaya، نويسنده , , N. and Stewart، نويسنده , , M. and Voronin، نويسنده , , A. and Wagner، نويسنده , , D. and Wang، نويسنده , , J.Z. and Wefel، نويسنده , , J.P and Wu، نويسنده , , J. and Zatsepin، نويسنده , , V.، نويسنده ,
Pages :
11
From page :
409
To page :
419
Abstract :
The Advanced Thin Ionization Calorimeter (ATIC) balloon-borne experiment is designed to perform cosmic-ray elemental spectra measurements from 50 GeV to 100 TeV for nuclei from hydrogen to iron. These measurements are expected to provide information about some of the most fundamental questions in astroparticle physics today. ATICʹs design centers on an 18 radiation length ( X 0 ) deep bismuth germanate (BGO) calorimeter, preceded by a 0.75 λ int graphite target. In September 1999, the ATIC detector was exposed to high-energy beams at CERNʹs SPS accelerator within the framework of the development program for the Advanced Cosmic-ray Composition Experiment for the Space Station (ACCESS). In December 2000–January 2001 and again in December 2002–January 2003, ATIC flew on the first two of a series of long-duration balloon (LDB) flights from McMurdo Station, Antarctica. We present here results from the 1999 beam tests, including energy resolutions for electrons and protons at several beam energies from 100 to 375 GeV as well as signal linearity and collection efficiency estimates. We show how these results compare with expectations based on simulations and their expected impacts on mission performance.
Keywords :
Cosmic-ray calorimeter , High-energy cosmic rays
Journal title :
Astroparticle Physics
Record number :
2027345
Link To Document :
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