First flight of the Gamma-Ray Imager/Polarimeter for Solar flares (GRIPS) instrument
The Gamma-Ray Imager/Polarimeter for Solar flares (GRIPS) is a balloon-borne telescope designed to study solar-flare particle acceleration and transport. We describe GRIPS's first Antarctic long-duration flight in Jan 2016 and report preliminary calibration and science results. Electron and ion...
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| creator | Duncan, Nicole Saint-Hilaire, P Shih, A Y Hurford, G J Bain, H M Amman, M Mochizuki, B A Hoberman, J Olson, J Maruca, B A Godbole, N M Smith, D M Sample, J Kelley, N A Zoglauer, A Caspi, A Kaufmann, P Boggs, S Lin, R P |
| description | The Gamma-Ray Imager/Polarimeter for Solar flares (GRIPS) is a balloon-borne telescope designed to study solar-flare particle acceleration and transport. We describe GRIPS's first Antarctic long-duration flight in Jan 2016 and report preliminary calibration and science results. Electron and ion dynamics, particle abundances and the ambient plasma conditions in solar flares can be understood by examining hard X-ray (HXR) and gamma-ray emission (20 keV to 10 MeV) with enhanced imaging, spectroscopy and polarimetry. GRIPS is specifically designed to answer questions including: What causes the spatial separation between energetic electrons producing HXRs and energetic ions producing gamma-ray lines? How anisotropic are the relativistic electrons, and why can they dominate in the corona? How do the compositions of accelerated and ambient material vary with space and time, and why? GRIPS's key technological improvements over the Reuven Ramaty High Energy Solar Spectroscopic Imager (RHESSI) include 3D position-sensitive germanium detectors (3D-GeDs) and a single-grid, multi-pitch rotating modulator (MPRM) collimator. The 3D-GeDs have spectral FWHM resolution of a few hundred keV and spatial resolution \( |
| doi_str_mv | 10.48550/arxiv.1609.08558 |
| format | Article |
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We describe GRIPS's first Antarctic long-duration flight in Jan 2016 and report preliminary calibration and science results. Electron and ion dynamics, particle abundances and the ambient plasma conditions in solar flares can be understood by examining hard X-ray (HXR) and gamma-ray emission (20 keV to 10 MeV) with enhanced imaging, spectroscopy and polarimetry. GRIPS is specifically designed to answer questions including: What causes the spatial separation between energetic electrons producing HXRs and energetic ions producing gamma-ray lines? How anisotropic are the relativistic electrons, and why can they dominate in the corona? How do the compositions of accelerated and ambient material vary with space and time, and why? GRIPS's key technological improvements over the Reuven Ramaty High Energy Solar Spectroscopic Imager (RHESSI) include 3D position-sensitive germanium detectors (3D-GeDs) and a single-grid, multi-pitch rotating modulator (MPRM) collimator. The 3D-GeDs have spectral FWHM resolution of a few hundred keV and spatial resolution \(<\)1 mm\(^3\). For photons that Compton scatter, usually \(\gtrsim\)150 keV, the energy deposition sites can be tracked, providing polarization measurements as well as enhanced background reduction. The MPRM single-grid design provides twice the throughput of a bi-grid imaging system like RHESSI. The grid is composed of 2.5 cm thick W/Cu slats with 1-13 mm variable slit pitch, achieving quasi-continuous FWHM angular coverage over 12.5-162 arcsecs. This resolution is capable of imaging the separate magnetic loop footpoint emissions in a variety of flare sizes. (Abstract edited down from source.)</description><identifier>EISSN: 2331-8422</identifier><identifier>DOI: 10.48550/arxiv.1609.08558</identifier><language>eng</language><publisher>Ithaca: Cornell University Library, arXiv.org</publisher><subject>Collimation ; Elastic scattering ; Electrons ; Gamma rays ; Imaging ; Ion dynamics ; Long duration flight ; Particle acceleration ; Photons ; Physics - High Energy Astrophysical Phenomena ; Physics - Instrumentation and Detectors ; Physics - Instrumentation and Methods for Astrophysics ; Physics - Solar and Stellar Astrophysics ; Physics - Space Physics ; Polarimeters ; Polarimetry ; Position sensing ; Slats ; Solar flares ; Spatial resolution</subject><ispartof>arXiv.org, 2016-09</ispartof><rights>2016. This work is published under http://arxiv.org/licenses/nonexclusive-distrib/1.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.</rights><rights>http://arxiv.org/licenses/nonexclusive-distrib/1.0</rights><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>228,230,780,784,885,27925</link.rule.ids><backlink>$$Uhttps://doi.org/10.1117/12.2233859$$DView published paper (Access to full text may be restricted)$$Hfree_for_read</backlink><backlink>$$Uhttps://doi.org/10.48550/arXiv.1609.08558$$DView paper in arXiv$$Hfree_for_read</backlink></links><search><creatorcontrib>Duncan, Nicole</creatorcontrib><creatorcontrib>Saint-Hilaire, P</creatorcontrib><creatorcontrib>Shih, A Y</creatorcontrib><creatorcontrib>Hurford, G J</creatorcontrib><creatorcontrib>Bain, H M</creatorcontrib><creatorcontrib>Amman, M</creatorcontrib><creatorcontrib>Mochizuki, B A</creatorcontrib><creatorcontrib>Hoberman, J</creatorcontrib><creatorcontrib>Olson, J</creatorcontrib><creatorcontrib>Maruca, B A</creatorcontrib><creatorcontrib>Godbole, N M</creatorcontrib><creatorcontrib>Smith, D M</creatorcontrib><creatorcontrib>Sample, J</creatorcontrib><creatorcontrib>Kelley, N A</creatorcontrib><creatorcontrib>Zoglauer, A</creatorcontrib><creatorcontrib>Caspi, A</creatorcontrib><creatorcontrib>Kaufmann, P</creatorcontrib><creatorcontrib>Boggs, S</creatorcontrib><creatorcontrib>Lin, R P</creatorcontrib><title>First flight of the Gamma-Ray Imager/Polarimeter for Solar flares (GRIPS) instrument</title><title>arXiv.org</title><description>The Gamma-Ray Imager/Polarimeter for Solar flares (GRIPS) is a balloon-borne telescope designed to study solar-flare particle acceleration and transport. We describe GRIPS's first Antarctic long-duration flight in Jan 2016 and report preliminary calibration and science results. Electron and ion dynamics, particle abundances and the ambient plasma conditions in solar flares can be understood by examining hard X-ray (HXR) and gamma-ray emission (20 keV to 10 MeV) with enhanced imaging, spectroscopy and polarimetry. GRIPS is specifically designed to answer questions including: What causes the spatial separation between energetic electrons producing HXRs and energetic ions producing gamma-ray lines? How anisotropic are the relativistic electrons, and why can they dominate in the corona? How do the compositions of accelerated and ambient material vary with space and time, and why? GRIPS's key technological improvements over the Reuven Ramaty High Energy Solar Spectroscopic Imager (RHESSI) include 3D position-sensitive germanium detectors (3D-GeDs) and a single-grid, multi-pitch rotating modulator (MPRM) collimator. The 3D-GeDs have spectral FWHM resolution of a few hundred keV and spatial resolution \(<\)1 mm\(^3\). For photons that Compton scatter, usually \(\gtrsim\)150 keV, the energy deposition sites can be tracked, providing polarization measurements as well as enhanced background reduction. The MPRM single-grid design provides twice the throughput of a bi-grid imaging system like RHESSI. The grid is composed of 2.5 cm thick W/Cu slats with 1-13 mm variable slit pitch, achieving quasi-continuous FWHM angular coverage over 12.5-162 arcsecs. This resolution is capable of imaging the separate magnetic loop footpoint emissions in a variety of flare sizes. (Abstract edited down from source.)</description><subject>Collimation</subject><subject>Elastic scattering</subject><subject>Electrons</subject><subject>Gamma rays</subject><subject>Imaging</subject><subject>Ion dynamics</subject><subject>Long duration flight</subject><subject>Particle acceleration</subject><subject>Photons</subject><subject>Physics - High Energy Astrophysical Phenomena</subject><subject>Physics - Instrumentation and Detectors</subject><subject>Physics - Instrumentation and Methods for Astrophysics</subject><subject>Physics - Solar and Stellar Astrophysics</subject><subject>Physics - Space Physics</subject><subject>Polarimeters</subject><subject>Polarimetry</subject><subject>Position sensing</subject><subject>Slats</subject><subject>Solar flares</subject><subject>Spatial resolution</subject><issn>2331-8422</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2016</creationdate><recordtype>article</recordtype><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><sourceid>GOX</sourceid><recordid>eNotj09rwkAQxZdCoWL9AD11oZf2EN2_2eRYpLWCUFHvYWJmNWKM3d2U-u1dtZcZZngz7_0IeeJsqDKt2QjcX_075CnLhywusjvSE1LyJFNCPJCB9zvGmEiN0Fr2yOqzdj5Qu68320BbS8MW6QSaBpIFnOi0gQ260bzdg6sbDOiobR1dXuZ4BA49fZ0spvPlG60PPriuwUN4JPcW9h4H_70fbT5W469k9j2Zjt9nCWhhErQAOcNSMlEyBL6uuEmlyCFHzVChTbWqdJaXBirJ17yyNpbS5spaY0HLPnm-vb0iF8eYENypuKAXV_SoeLkpjq796dCHYtd27hAzFYJlTBmVZkaeAaPOXGg</recordid><startdate>20160927</startdate><enddate>20160927</enddate><creator>Duncan, Nicole</creator><creator>Saint-Hilaire, P</creator><creator>Shih, A Y</creator><creator>Hurford, G J</creator><creator>Bain, H M</creator><creator>Amman, M</creator><creator>Mochizuki, B A</creator><creator>Hoberman, J</creator><creator>Olson, J</creator><creator>Maruca, B A</creator><creator>Godbole, N M</creator><creator>Smith, D M</creator><creator>Sample, J</creator><creator>Kelley, N A</creator><creator>Zoglauer, A</creator><creator>Caspi, A</creator><creator>Kaufmann, P</creator><creator>Boggs, S</creator><creator>Lin, R P</creator><general>Cornell University Library, arXiv.org</general><scope>8FE</scope><scope>8FG</scope><scope>ABJCF</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>HCIFZ</scope><scope>L6V</scope><scope>M7S</scope><scope>PIMPY</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope><scope>PTHSS</scope><scope>GOX</scope></search><sort><creationdate>20160927</creationdate><title>First flight of the Gamma-Ray Imager/Polarimeter for Solar flares (GRIPS) instrument</title><author>Duncan, Nicole ; Saint-Hilaire, P ; Shih, A Y ; Hurford, G J ; Bain, H M ; Amman, M ; Mochizuki, B A ; Hoberman, J ; Olson, J ; Maruca, B A ; Godbole, N M ; Smith, D M ; Sample, J ; Kelley, N A ; Zoglauer, A ; Caspi, A ; Kaufmann, P ; Boggs, S ; Lin, R P</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a527-efaa90eb302b0ea1cd176329a9e50e4ef654d589b7ad31c1dffc1dbf94ff7fa53</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2016</creationdate><topic>Collimation</topic><topic>Elastic scattering</topic><topic>Electrons</topic><topic>Gamma rays</topic><topic>Imaging</topic><topic>Ion dynamics</topic><topic>Long duration flight</topic><topic>Particle acceleration</topic><topic>Photons</topic><topic>Physics - High Energy Astrophysical Phenomena</topic><topic>Physics - Instrumentation and Detectors</topic><topic>Physics - Instrumentation and Methods for Astrophysics</topic><topic>Physics - Solar and Stellar Astrophysics</topic><topic>Physics - Space Physics</topic><topic>Polarimeters</topic><topic>Polarimetry</topic><topic>Position sensing</topic><topic>Slats</topic><topic>Solar flares</topic><topic>Spatial resolution</topic><toplevel>online_resources</toplevel><creatorcontrib>Duncan, Nicole</creatorcontrib><creatorcontrib>Saint-Hilaire, P</creatorcontrib><creatorcontrib>Shih, A Y</creatorcontrib><creatorcontrib>Hurford, G J</creatorcontrib><creatorcontrib>Bain, H M</creatorcontrib><creatorcontrib>Amman, M</creatorcontrib><creatorcontrib>Mochizuki, B A</creatorcontrib><creatorcontrib>Hoberman, J</creatorcontrib><creatorcontrib>Olson, J</creatorcontrib><creatorcontrib>Maruca, B A</creatorcontrib><creatorcontrib>Godbole, N M</creatorcontrib><creatorcontrib>Smith, D M</creatorcontrib><creatorcontrib>Sample, J</creatorcontrib><creatorcontrib>Kelley, N A</creatorcontrib><creatorcontrib>Zoglauer, A</creatorcontrib><creatorcontrib>Caspi, A</creatorcontrib><creatorcontrib>Kaufmann, P</creatorcontrib><creatorcontrib>Boggs, S</creatorcontrib><creatorcontrib>Lin, R P</creatorcontrib><collection>ProQuest SciTech Collection</collection><collection>ProQuest Technology Collection</collection><collection>Materials Science & Engineering Collection</collection><collection>ProQuest Central (Alumni Edition)</collection><collection>ProQuest Central UK/Ireland</collection><collection>ProQuest Central Essentials</collection><collection>ProQuest Central</collection><collection>Technology Collection</collection><collection>ProQuest One Community College</collection><collection>ProQuest Central Korea</collection><collection>SciTech Premium Collection</collection><collection>ProQuest Engineering Collection</collection><collection>Engineering Database</collection><collection>Publicly Available Content Database</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>ProQuest Central China</collection><collection>Engineering Collection</collection><collection>arXiv.org</collection><jtitle>arXiv.org</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Duncan, Nicole</au><au>Saint-Hilaire, P</au><au>Shih, A Y</au><au>Hurford, G J</au><au>Bain, H M</au><au>Amman, M</au><au>Mochizuki, B A</au><au>Hoberman, J</au><au>Olson, J</au><au>Maruca, B A</au><au>Godbole, N M</au><au>Smith, D M</au><au>Sample, J</au><au>Kelley, N A</au><au>Zoglauer, A</au><au>Caspi, A</au><au>Kaufmann, P</au><au>Boggs, S</au><au>Lin, R P</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>First flight of the Gamma-Ray Imager/Polarimeter for Solar flares (GRIPS) instrument</atitle><jtitle>arXiv.org</jtitle><date>2016-09-27</date><risdate>2016</risdate><eissn>2331-8422</eissn><abstract>The Gamma-Ray Imager/Polarimeter for Solar flares (GRIPS) is a balloon-borne telescope designed to study solar-flare particle acceleration and transport. We describe GRIPS's first Antarctic long-duration flight in Jan 2016 and report preliminary calibration and science results. Electron and ion dynamics, particle abundances and the ambient plasma conditions in solar flares can be understood by examining hard X-ray (HXR) and gamma-ray emission (20 keV to 10 MeV) with enhanced imaging, spectroscopy and polarimetry. GRIPS is specifically designed to answer questions including: What causes the spatial separation between energetic electrons producing HXRs and energetic ions producing gamma-ray lines? How anisotropic are the relativistic electrons, and why can they dominate in the corona? How do the compositions of accelerated and ambient material vary with space and time, and why? GRIPS's key technological improvements over the Reuven Ramaty High Energy Solar Spectroscopic Imager (RHESSI) include 3D position-sensitive germanium detectors (3D-GeDs) and a single-grid, multi-pitch rotating modulator (MPRM) collimator. The 3D-GeDs have spectral FWHM resolution of a few hundred keV and spatial resolution \(<\)1 mm\(^3\). For photons that Compton scatter, usually \(\gtrsim\)150 keV, the energy deposition sites can be tracked, providing polarization measurements as well as enhanced background reduction. The MPRM single-grid design provides twice the throughput of a bi-grid imaging system like RHESSI. The grid is composed of 2.5 cm thick W/Cu slats with 1-13 mm variable slit pitch, achieving quasi-continuous FWHM angular coverage over 12.5-162 arcsecs. This resolution is capable of imaging the separate magnetic loop footpoint emissions in a variety of flare sizes. (Abstract edited down from source.)</abstract><cop>Ithaca</cop><pub>Cornell University Library, arXiv.org</pub><doi>10.48550/arxiv.1609.08558</doi><oa>free_for_read</oa></addata></record> |
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| subjects | Collimation Elastic scattering Electrons Gamma rays Imaging Ion dynamics Long duration flight Particle acceleration Photons Physics - High Energy Astrophysical Phenomena Physics - Instrumentation and Detectors Physics - Instrumentation and Methods for Astrophysics Physics - Solar and Stellar Astrophysics Physics - Space Physics Polarimeters Polarimetry Position sensing Slats Solar flares Spatial resolution |
| title | First flight of the Gamma-Ray Imager/Polarimeter for Solar flares (GRIPS) instrument |
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