NeD. Measurement of the energy spectrum of cosmic-ray induced neutrons aboard an ER-2 high-altitude airplane P. Goldhagena,*, M. Reginattoa, T. Knissb,

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Presentation transcript:

NeD

Measurement of the energy spectrum of cosmic-ray induced neutrons aboard an ER-2 high-altitude airplane P. Goldhagena,*, M. Reginattoa, T. Knissb, J.W. Wilsonc, R.C. Singleterryc, I.W. Jonesc, W. Van Stevenincka US Department of Energy, Environmental Measurements Laboratory

Neutron Palestine, Texas 31N, 95W Calibrated Value from Table and Flux Calculator () = 1 neutron /cm^2/s Altitude (km)Internet Flux 1.28 (184.57) (80.33) 3.4 (96.61) 10 (114.53) 10.2 (161.29)MEAN STANDARD DEVIATION

The role of cosmic rays in the atmospheric processes Y I Stozhkov Lebedev Physical Institute, Russian Academy of Sciences, Moscow, Russia

Weight Budget: Sensor circuitry / PMTs and Bases 111 g Frame90 g Control circuitry (Balloon SAT)70 g Moderating Material/ Scintillator88.4 / 30 g Power Source67.6 g Support System/ Platforms15 g Insulation15 g TOTAL487 g* (398.4) *Weights listed are subject to change as specific sensors and components are found and completed.

1.0 Payload Design 1.1 Frame Balloon attachments 1.2 Sensing Structure PMT/Diode attachment Scintillation base Photon shielding Photon capture Photon noise reduction 2.0 Electrical Design 2.1 Preamp 2.2 Discriminator Comparator 2.3 Counter 2.4 Basic Stamp 2.5 Sensing DC/DC Converter Photodiode PMT Base Structural platform 3.0 Software Design 3.1 Basic Stamp Pre-flight initialization Flight software Post flight data retrieval 3.2 PC software Calibration Altitude-Time converter Graphical representation 4.0 Power 4.1 BalloonSat 4.2 PMT DC/DC converter 4.3 Photodiodes DC/DC converter 4.4 Preamp/Discriminator