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PERDaix (Proton Electron Radiation Detector Aix-la-Chapelle) is a novel,small and light weight magnet spectrometer to measure the charge and mass dependent solar modulation periodically for deeper understanding of cosmic rays.〔http://www.srl.utu.fi/AuxDOC/kocharov/ICRC2009/pdf/icrc1025.pdf〕 For a better understanding of sources and acceleration of cosmic particles direct measurements of cosmic rays are necessary. Also for a better understanding of the solar modulation which is expected to follow the 22-year solar cycle, time dependent measurements are needed.〔http://www.srl.utu.fi/AuxDOC/kocharov/ICRC2009/pdf/icrc0338.pdf〕 PERDaix is a newly designed detector which is constructed by the Department of Physics 1b, RWTH Aachen University. Being proposed to the German Space Agency in November 2009 for a participation in the BEXUS Program (Rocket and Balloon Experiments for University Students) after a first canceled flight attempt in October 2010 the actual flight took place as a post-BEXUS-campaign flight opportunity in November 2010. The detector is able to measure charged particles in the energy range of 0.5 GeV to 5 GeV. PERDaix uses a time of flight system, a scintillating fiber tracker with SiPM readout, and a transition radiation detector in combination with a permanent magnet to measure particle fluxes.〔http://www.srl.utu.fi/AuxDOC/kocharov/ICRC2009/pdf/icrc0459.pdf〕 The BEXUS balloons are launched at Esrange Space Center near Kiruna, Sweden. In November 2010 PERDaix reached a top altitude of 33.3 km at which it kept floating for 1.5 hours. == Sub-Detectors == 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「PERDaix」の詳細全文を読む スポンサード リンク
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