Beam tests of the balloon-borne ATIC experiment

Ganel, O.; Adams, J. H.; Ahn, H. S.; Ampe, J.; Bashindzhagyan, G. L.; Case, G.; Chang, Jin; Ellison, S.; Fazely, A. R.; Gould, Richard D.; Granger, D.; Gunasingha, R. M.; Guzik, T. G.; Han, Yang; Isbert, J.; Kim, H. J.; Kim, K. C.; Kim, S. K.; Kwon, Y.; Panasyuk, M. I.; Панов, А. Д.; Price, B.; Samsonov, G. A.; Schmidt, Wolfgang; Şen, Mürsel; Seo, E. S.; Sina, R.; Sokolskaya, N. V.; Stewart, M. F.; Voronin, A.; Wágner, D.; Wang, J. Z.; Wefel, J. P.; Wu, J.; Zatsepin, V. I.

doi:10.1016/j.nima.2005.06.081

Cited by 20 publications

(9 citation statements)

References 11 publications

(10 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Only one such measurement has thus far been realized in space flight, the Cosmic-Ray Nuclei detector (CRN) that was flown on the Space Shuttle (L'Heureux et al 1990). Long-duration balloon (LDB) flights permit exposures of the order of weeks, and several LDB instruments have been developed: TRACER (Transition Radiation Array for Cosmic Energetic Radiation) (Ave et al 2011), which is the subject of this paper, and two instruments that use short calorimeters for the energy measurement, ATIC (Ganel et al 2005) and CREAM (Ahn et al 2007). TRACER was designed and constructed at the University of Chicago, utilizing the heritage of CRN.…”

Section: Introductionmentioning

confidence: 99%

Energy Spectra of Primary and Secondary Cosmic-Ray Nuclei Measured With Tracer

Obermeier

Ave

Boyle

et al. 2011

ApJ

126

135

View full text Add to dashboard Cite

The TRACER cosmic-ray detector, first flown on long-duration balloon (LDB) in 2003 for observations of the major primary cosmic-ray nuclei from oxygen (Z = 8) to iron (Z = 26), has been upgraded to also measure the energies of the lighter nuclei, including the secondary species boron (Z = 5). The instrument was used in another LDB flight in 2006. The properties and performance of the modified detector system are described, and the analysis of the data from the 2006 flight is discussed. The energy spectra of the primary nuclei carbon (Z = 6), oxygen, and iron over the range from 1 GeV amu −1 to 2 TeV amu −1 are reported. The data for oxygen and iron are found to be in good agreement with the results of the previous TRACER flight. The measurement of the energy spectrum of boron also extends into the TeV amu −1 region. The relative abundances of the primary nuclei, such as carbon, oxygen, and iron, above ∼ 10 GeV amu −1 are independent of energy, while the boron abundance, i. e. the B/C abundance ratio, decreases with energy as expected. However, there is an indication that the previously reported E −0.6 dependence of the B/C ratio does not continue to the highest energies.

show abstract

Section: Introductionmentioning

confidence: 99%

Energy Spectra of Primary and Secondary Cosmic-Ray Nuclei Measured With Tracer

Obermeier

Ave

Boyle

et al. 2011

ApJ

126

135

View full text Add to dashboard Cite

show abstract

“…The calorimeter is comprised of 8 layers of 40 BGO crystals in each layer in ATIC-2 and of 10 layers in ATIC-4. The details of construction of the apparatus and the procedures of its calibration are given in Guzik et al (2004); Zatsepin et al (2004); Ganel et al (2005); Panov et al (2008).…”

Section: Introductionmentioning

confidence: 99%

Possible structure in the cosmic ray electron spectrum measured by the ATIC-2 and ATIC-4 experiments

Панов

Zatsepin

Sokolskaya

et al. 2011

Astrophys. Space Sci. Trans.

Self Cite

View full text Add to dashboard Cite

show abstract

“…As a result, the energy resolution for electrons of the instrument was high in the total energy range of 30 GeV-1 TeV. The simulation predicted and the beam tests confirmed that the resolution, in terms of half width on the half height, was not worse than 3% [106] (see Figure 20). Such high resolution, together with relatively high statistics, allows a meaningful measurement of the electron spectrum in the high-resolution mode -with energy bins as small as 5-8% (0.020-0.035 of decimal logarithm of energy).…”

Section: The Fine Structure Of the Electron Spectrum Measured By The mentioning

confidence: 59%

“…In the range of 200-810GeV, there were 701 events studied for statistical significance of the structure. and the procedures of its calibration are given in [107,108,106,109]. The calorimeter of ATIC was thick for electrons.…”

Section: The Fine Structure Of the Electron Spectrum Measured By The mentioning

confidence: 99%

See 1 more Smart Citation

Electrons and Positrons in Cosmic Rays

Панов¹

2013

J. Phys.: Conf. Ser.

View full text Add to dashboard Cite

This review concentrates on the results obtained, over the last ten years, on the astrophysics of high-energy cosmic ray electrons and positrons. The anomalies, observed in the data of recent experiments (possible bump in the electron spectrum and the PAMELA anomaly in the positron fraction) are discussed through the systematic use of simple analytical solutions of the transport equations for cosmic ray electrons. Three main ways of explaining the origin of the anomalies are considered: the conservative way supposing the positrons to be pure secondary particles; the nearby sources like pulsars origin; and the dark matter origin. This review discusses, also, the inability to select the pulsars model or the dark matter model to explain the electron anomalies on the basis of the electron spectra with the usual large energy binning ( 15%). It is argued that the signature of nearby pulsars origin of the anomalies against the dark matter origin could be the fine structure of the cosmic ray electron spectrum predicted in the Malyshev et al. paper (2009) and which was observed in the data from the high-resolution ATIC experiment (2009)(2010)(2011). To date, the high-resolution ATIC data was the only experimental result of this type published in the literature. Therefore, they should be tested by other experiments as soon as possible. Generally, there is, also, rather controversial situations between the data of the majority of recent experiments and, consequently, there is a noted urgent need for new high-precision and high-statistical experiments.

show abstract

Beam tests of the balloon-borne ATIC experiment

Cited by 20 publications

References 11 publications

Energy Spectra of Primary and Secondary Cosmic-Ray Nuclei Measured With Tracer

Energy Spectra of Primary and Secondary Cosmic-Ray Nuclei Measured With Tracer

Possible structure in the cosmic ray electron spectrum measured by the ATIC-2 and ATIC-4 experiments

Electrons and Positrons in Cosmic Rays

Contact Info

Product

Resources

About