Cosmic-ray energetics and mass (CREAM) balloon project
نویسندگان
چکیده
The cosmic-ray energetics and mass (CREAM) investigation is designed to measure cosmic-ray composition to the supernova energy scale of 10 eV in a series of ultra long duration balloon (ULDB) flights. The first flight is planned to be launched from Antarctica in December 2004. The goal is to observe cosmic-ray spectral features and/or abundance changes that might signify a limit to supernova acceleration. The particle charge ðZÞ measurements will be made with a timing-based charge detector and a pixelated silicon charge detector to minimize the effect of backscatter from the calorimeter. The particle energy measurements will be made with a transition radiation detector (TRD) for Z > 3 and a sampling tungsten/scintillator calorimeter for ZP 1 particles, allowing inflight cross calibration of the two detectors. The status of the payload construction and flight preparation are reported in
منابع مشابه
Measurements of cosmic-ray secondary nuclei at high energies with the first flight of the CREAM balloon-borne experiment
We present new measurements of heavy cosmic-ray nuclei at high energies performed during the first flight of the balloon-borne cosmic-ray experiment CREAM (Cosmic-Ray Energetics And Mass). This instrument uses multiple charge detectors Preprint submitted to Elsevier 12 August 2008 and a transition radiation detector to provide the first high accuracy measurements of the relative abundances of e...
متن کاملThe Cosmic Ray Energetics and Mass (CREAM) Experiment Timing Charge Detector
The cosmic ray all-particle spectrum has a small steepening of its spectral slope, or ‘knee’, near 10 eV. Changes in the nuclear composition of cosmic rays may be associated with the knee and provide clues concerning the origin of the spectral change. An ultra-long duration balloon experiment, Cosmic Ray Energetics and Mass (CREAM), is being constructed to measure cosmic ray elemental spectra a...
متن کاملThe Cosmic Ray Energetics And Mass (CREAM) Instrument
The Cosmic Ray Energetics And Mass (CREAM) experiment is designed to investigate high energy (10 ~ 10 eV) cosmic rays over the elemental range from hydrogen to iron (1 ≤ Z ≤ 26), through a series of long balloon flights. Originally planned to be flown on the first of the new Ultra Long Duration Balloon (ULDB) being developed by NASA, the CREAM instrument was launched as a long duration balloons...
متن کاملFirst measurements of cosmic-ray nuclei at high energy with CREAM
The balloon-borne cosmic-ray experiment CREAM-I (Cosmic-Ray Energetics And Mass) recently completed a successful 42-day flight during the 2004-2005 NASA/NSF/NSBF Antarctic expedition. CREAM-I combines an imaging calorimeter with charge detectors and a precision transition radiation detector (TRD). The TRD component of CREAM-I is targeted at measuring the energy of cosmic-ray particles with char...
متن کاملCosmic Ray Energetics and Mass: Configuration and Progress on Construction and Testing
CREAM (Cosmic Ray Energetics And Mass) is an experiment being constructed to study high-energy cosmic rays from 10 eV to over 5×10 eV using the new ultra long duration balloon (ULDB) capability under development by NASA. ULDB flights are designed to last from 60 to 100 days each. CREAM includes a sampling tungsten/scintillator calorimeter, a transition radiation detector (TRD), and a timing-bas...
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