BARREL
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1 Summary
Balloon Array for RBSP Relativistic Electron Losses (BARREL)
PI: Robyn Millan http://virbo.org/meta/viewdata.do?docname=14B504F4-8CBC-1F3A-4919-C90B3E067EB1
From: http://nasascience.nasa.gov/missions/barrel-1
BARREL is a balloon-based Mission of Opportunity to augment the measurements of NASA's RBSP spacecraft. BARREL seeks to measure the precipitation of relativistic electrons from the radiation belts during 2 multi-balloon campaigns, operated in the southern hemispheres (option for 3rd northern hemisphere campaign). During each campaign, 5-8 long-duration balloons would be aloft simultaneously over a one-month period to provide measurements of the spatial extent of the relativistic electron precipitation and to allow an estimate of the total electron loss from the radiation belts. Observations are planned for when the balloon-array will be conjugate with the RBSP spacecraft, such that direct comparison is possible between one another.
http://www.dartmouth.edu/~rmillan/barrel.html
http://www.dartmouth.edu/~rmillan/barrel/BARREL_objectives.pdf
http://nasascience.nasa.gov/missions/barrel-1
http://rbsp.jhuapl.edu/science/meetings/20090304/BARREL-RBSP_SWG_Mar09.ppt
2 Instruments
Payload concept based on MINIS design http://www.dartmouth.edu/~rmillan/minis/MINIS.Instrumentation.pdf
2.1 Optical Photometer
http://www.dartmouth.edu/~rmillan/minis/MINIS.Instrumentation.pdf
2.2 Magnetometer
TCM2 from PNI Corp
PNI Corp. TCM2-20 axis. The magnetometer uses three orthogonal magneto-inductive sensors and measures the three components of B with 10nT resolution. Serial data is transferred to the flight computer, COM3. In addition, the TCM2 provides pitch & roll information.
http://www.tri-m.com/products/precisionnav/tcm250.html
http://www.mil.ufl.edu/projects/gnuman/gnuman_pre2005/spec_sheets/tcm2_productsheet.pdf
http://www.pnicorp.com/productDetail?nodeId=cMM3
2.3 Scintillation Detector
A 3”× 3” NaI scintillation detector to detect x-rays/gamma-rays in the range 20 keV to 10 MeV.
The effective area ranges from 10–40 cm2 depending on photon energy, and energy resolution ranges from 20% (lowest energies) to 4% (highest energies).
http://www.dartmouth.edu/~rmillan/minis/MINIS.Instrumentation.pdf
