Polarimeter for Solar flares GRIPS Recently funded NASA LCAS balloon mission 3D positionsensitive germanium spectrometer High spectral resolution 2 keV FWHM at 662 keV Comptonscatter track reconstruction ID: 299846
Download Presentation The PPT/PDF document "Gamma-Ray Imager/" is the property of its rightful owner. Permission is granted to download and print the materials on this web site for personal, non-commercial use only, and to display it on your personal computer provided you do not modify the materials and that you retain all copyright notices contained in the materials. By downloading content from our website, you accept the terms of this agreement.
Slide1
Gamma-Ray Imager/Polarimeter for Solar flares (GRIPS)
Recently funded NASA LCAS balloon mission3D position-sensitive germanium spectrometerHigh spectral resolution (~2 keV FWHM at 662 keV)Compton-scatter track reconstructionUses a rotating grid to selectively mask off the Sun to produce gamma-ray imagesWill resolve gamma-ray footpoints in many flaresMeasures gamma-ray polarization “for free”Proves technologies for a future space missionSlide2
GRIPS components
Multi-pitch rotating modulator (MPRM),
2-cm thick tungsten
Spectrometer/polarimeter,
>200 cm
2
of geometric area
Energy range
~20 keV
to >~10 MeV
Spectral resolution
~2 keV FWHM at 662 keV
Boom length8 mAngular resolution12.5 to 162 arcsec
Other components include:Cryostat/cryocoolerElectronics, with ASICsAnti-coincidence BGO shieldSolar aspect system
Con-US test flight: spring 2012