{"id":475550,"date":"2023-07-20T14:00:00","date_gmt":"2023-07-20T18:00:00","guid":{"rendered":"https:\/\/www.nasa.gov\/?post_type=migration&p=475550"},"modified":"2023-08-14T19:19:48","modified_gmt":"2023-08-14T23:19:48","slug":"nasas-compair-gamma-ray-hunting-mission-prepares-for-balloon-flight","status":"publish","type":"post","link":"https:\/\/www.nasa.gov\/universe\/nasas-compair-gamma-ray-hunting-mission-prepares-for-balloon-flight\/","title":{"rendered":"NASA\u2019s ComPair Gamma-Ray Hunting Mission Prepares for Balloon Flight"},"content":{"rendered":"\n<p>Engineers and scientists have shipped NASA\u2019s ComPair instrument to Fort Sumner, New Mexico, ahead of its scheduled August flight early in NASA\u2019s 2023 <a href=\"https:\/\/www.csbf.nasa.gov\/\" rel=\"noopener\">fall balloon campaign<\/a>.<\/p>\n\n\n\n<p>ComPair\u2019s goal is to test new technologies for studying gamma rays, the highest-energy form of light. It was assembled and tested at <a href=\"https:\/\/www.nasa.gov\/goddard\" rel=\"noopener\">NASA\u2019s Goddard Space Flight Center<\/a> in Greenbelt, Maryland.<\/p>\n\n\n\n<p>\u201cThe gamma-ray energy range we\u2019re targeting with ComPair isn\u2019t well covered by current observatories,\u201d said Carolyn Kierans, the instrument\u2019s principal investigator at Goddard. \u201cWe hope that after a successful balloon test flight, future versions of the technologies will be used in space-based missions.\u201d<\/p>\n\n\n<div id=\"\" class=\"hds-media hds-module wp-block-image\"><div class=\"margin-left-auto margin-right-auto nasa-block-align-inline\"><div class=\"hds-media-wrapper margin-left-auto margin-right-auto\"><figure class=\"hds-media-inner hds-cover-wrapper hds-media-ratio-fit \"><a href=\"https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/07\/compair_tvac_img_2231_half.jpg\"><img fetchpriority=\"high\" decoding=\"async\" width=\"985\" height=\"656\" src=\"https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/07\/compair_tvac_img_2231_half.jpg?w=985\" class=\"attachment-2048x2048 size-2048x2048\" alt=\"People in white clean suits and hair nets stand on a yellow platform with railings in front of a large blue cylinder.\" style=\"transform: scale(1); transform-origin: 50% 50%; object-position: 50% 50%; object-fit: cover;\" block_context=\"nasa-block\" srcset=\"https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/07\/compair_tvac_img_2231_half.jpg 985w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/07\/compair_tvac_img_2231_half.jpg?resize=300,200 300w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/07\/compair_tvac_img_2231_half.jpg?resize=768,511 768w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/07\/compair_tvac_img_2231_half.jpg?resize=400,266 400w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/07\/compair_tvac_img_2231_half.jpg?resize=600,400 600w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/07\/compair_tvac_img_2231_half.jpg?resize=900,599 900w\" sizes=\"(max-width: 985px) 100vw, 985px\" loading=\"eager\" \/><\/a><\/figure><figcaption class=\"hds-caption padding-y-2\"><div class=\"hds-caption-text p-sm margin-0\">ComPair team members prepare the instrument for thermal vacuum testing. Once closed, the chamber will begin to simulate conditions the mission will experience during its balloon flight, which will take it to about 133,000 feet (40,000 meters), or nearly four times the cruising altitude of a commercial airliner.<\/div><div class=\"hds-credits\">Credit: NASA\u2019s Goddard Space Flight Center\/Scott Wiessinger<\/div><\/figcaption><\/div><\/div><\/div>\n\n\n<p>ComPair is designed to detect gamma rays with energies between 200,000 and 20 million electron volts. (For comparison, the energy of visible light is 2 to 3 electron volts.) <a href=\"https:\/\/universe.nasa.gov\/stars\/basics\/#otp_death\" rel=\"noopener\">Supernovae<\/a> and gamma-ray bursts, the most powerful explosions in the cosmos, glow brightest in this range, as do the most massive and distant <a href=\"https:\/\/universe.nasa.gov\/galaxies\/types\/#otp_active_galaxies\" rel=\"noopener\">active galaxies<\/a>, which are powered by <a href=\"https:\/\/universe.nasa.gov\/black-holes\/types\/#otp_supermassive\" rel=\"noopener\">supermassive black holes<\/a>. Scientists know this because they see a fraction of the light emitted by these galaxies with <a href=\"https:\/\/www.nasa.gov\/content\/fermi-gamma-ray-space-telescope\" rel=\"noopener\">NASA\u2019s Fermi Gamma-ray Space Telescope<\/a>, which observes higher-energy gamma rays.<\/p>\n\n\n<div id=\"\" class=\"hds-media hds-module wp-block-image\"><div class=\"margin-left-auto margin-right-auto nasa-block-align-inline\"><div class=\"hds-media-wrapper margin-left-auto margin-right-auto\"><figure class=\"hds-media-inner hds-cover-wrapper hds-media-ratio-fit \"><a href=\"https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/07\/compair_tvac_img_2141_half.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"985\" height=\"657\" src=\"https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/07\/compair_tvac_img_2141_half.jpg?w=985\" class=\"attachment-2048x2048 size-2048x2048\" alt=\"This photograph shows three people standing on either side of NASAs ComPair balloon instrument before it goes into a thermal vacuum chamber for testing.\" style=\"transform: scale(1); transform-origin: 50% 50%; object-position: 50% 50%; object-fit: cover;\" block_context=\"nasa-block\" srcset=\"https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/07\/compair_tvac_img_2141_half.jpg 985w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/07\/compair_tvac_img_2141_half.jpg?resize=300,200 300w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/07\/compair_tvac_img_2141_half.jpg?resize=768,512 768w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/07\/compair_tvac_img_2141_half.jpg?resize=400,267 400w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/07\/compair_tvac_img_2141_half.jpg?resize=600,400 600w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/07\/compair_tvac_img_2141_half.jpg?resize=900,600 900w\" sizes=\"(max-width: 985px) 100vw, 985px\" \/><\/a><\/figure><figcaption class=\"hds-caption padding-y-2\"><div class=\"hds-caption-text p-sm margin-0\">Team members work on the ComPair balloon instrument before it begins thermal vacuum chamber testing at NASA\u2019s Goddard Space Flight Center in Greenbelt, Maryland. ComPair project manager Regina Caputo (front right), graduate student Nicholas Kirschner (George Washington University, left), and research scientist Nicholas Cannady (University of Maryland Baltimore County, rear) examine ComPair\u2019s various components to determine what needs to be \u201charnessed,\u201d or connected via cable to power systems and the onboard computer.<\/div><div class=\"hds-credits\">Credit: NASA\u2019s Goddard Space Flight Center\/Scott Wiessinger<\/div><\/figcaption><\/div><\/div><\/div>\n\n\n<p>ComPair gets its name from the two ways it detects and measures gamma rays: Compton scattering and pair production. Compton scattering occurs when light hits a particle, such as an electron, and transfers some energy to it. Pair production happens when a gamma ray grazes the nucleus of an atom. The interaction converts the gamma ray into a pair of particles \u2013 an electron and its antimatter counterpart, a positron.<\/p>\n\n\n\n<p>The ComPair instrument has four major components:<\/p>\n\n\n\n<ul>\n<li>A tracker containing 10 layers of silicon detectors that determines the positions of incoming gamma rays.<\/li>\n\n\n\n<li>A high-resolution calorimeter that precisely measures lower-energy Compton-scattered gamma rays.<\/li>\n\n\n\n<li>Another calorimeter that measures the higher-energies of electron-positron pairs.  <\/li>\n\n\n\n<li>An anticoincidence detector that notes the entry of high-energy charged particles called cosmic rays, allowing ComPair\u2019s other instruments to ignore them.<\/li>\n<\/ul>\n\n\n\n<p>The mission team assembled all the components and tested them in a large thermal vacuum chamber at Goddard to assess how they\u2019ll function at balloon altitudes. The next step is to fly the instrument. The flight will carry ComPair to a height of about 133,000 feet (40,000 meters), or nearly four times the cruising altitude of a commercial airliner.<\/p>\n\n\n<div id=\"\" class=\"hds-media hds-module wp-block-image\"><div class=\"margin-left-auto margin-right-auto nasa-block-align-inline\"><div class=\"hds-media-wrapper margin-left-auto margin-right-auto\"><figure class=\"hds-media-inner hds-cover-wrapper hds-media-ratio-fit \"><a href=\"https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/07\/compair_tvac_img_2275_half.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"985\" height=\"1478\" src=\"https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/07\/compair_tvac_img_2275_half.jpg?w=985\" class=\"attachment-2048x2048 size-2048x2048\" alt=\"The silver boxes that make up the ComPair instrument are attached by coils of wires.\" style=\"transform: scale(1); transform-origin: 50% 50%; object-position: 50% 50%; object-fit: cover;\" block_context=\"nasa-block\" srcset=\"https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/07\/compair_tvac_img_2275_half.jpg 985w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/07\/compair_tvac_img_2275_half.jpg?resize=200,300 200w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/07\/compair_tvac_img_2275_half.jpg?resize=768,1152 768w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/07\/compair_tvac_img_2275_half.jpg?resize=682,1024 682w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/07\/compair_tvac_img_2275_half.jpg?resize=267,400 267w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/07\/compair_tvac_img_2275_half.jpg?resize=400,600 400w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/07\/compair_tvac_img_2275_half.jpg?resize=600,900 600w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/07\/compair_tvac_img_2275_half.jpg?resize=800,1200 800w\" sizes=\"(max-width: 985px) 100vw, 985px\" \/><\/a><\/figure><figcaption class=\"hds-caption padding-y-2\"><div class=\"hds-caption-text p-sm margin-0\">A member of the ComPair team places a hand atop the instrument. ComPair contains four main components: the tracker, a high-resolution low-energy calorimeter, a high-energy calorimeter, and an anticoincidence detector. The tracker and calorimeters are stacked on top of each other and study gamma rays. The anticoincidence detector notes the entry of high-energy charged particles called cosmic rays, allowing ComPair\u2019s other detectors to ignore them. <\/div><div class=\"hds-credits\">Credit: NASA\u2019s Goddard Space Flight Center\/Scott Wiessinger<\/div><\/figcaption><\/div><\/div><\/div>\n\n\n<p>ComPair will piggyback with one of the primary balloon payloads that will fly during NASA\u2019s annual Fort Sumner balloon campaign. NASA\u2019s scientific balloons offer frequent, low-cost access to near-space to conduct scientific investigations and technology maturation in fields such as astrophysics, heliophysics, and atmospheric research, as well as training for the next generation of leaders in engineering and science.<\/p>\n\n\n\n<p>ComPair is a collaboration among Goddard, the Naval Research Laboratory in Washington, Brookhaven National Laboratory in Upton, New York, and Los Alamos National Laboratory in New Mexico.<\/p>\n\n\n\n<p><a href=\"https:\/\/svs.gsfc.nasa.gov\/14372\" rel=\"noopener\">Download high-resolution video and images from NASA\u2019s Scientific Visualization Studio<\/a>.<\/p>\n\n\n\n<p><strong>By <a href=\"mailto:jeanette.a.kazmierczak@nasa.gov?subject=NASA%E2%80%99s%20ComPair%20Gamma-Ray%20Hunting%20Mission%20Prepares%20for%20Balloon%20Flight\">Jeanette Kazmierczak<\/a><br> <a href=\"https:\/\/www.nasa.gov\/goddard\" rel=\"noopener\">NASA\u2019s Goddard Space Flight Center<\/a>, Greenbelt, Md.<\/strong><\/p>\n\n\n\n<p><strong> Media Contacts:<br> <a href=\"mailto:claire.andreoli@nasa.gov?subject=NASA%E2%80%99s%20ComPair%20Gamma-Ray%20Hunting%20Mission%20Prepares%20for%20Balloon%20Flight\">Claire Andreoli<\/a><br> NASA\u2019s Goddard Space Flight Center<\/strong><\/p>\n\n\n\n<p><strong> <a href=\"mailto:jeremy.l.eggers@nasa.gov?subject=NASA%E2%80%99s%20ComPair%20Gamma-Ray%20Hunting%20Mission%20Prepares%20for%20Balloon%20Flight\">Jeremy Eggers<\/a><br> <a href=\"https:\/\/www.nasa.gov\/centers\/wallops\/home\" rel=\"noopener\">NASA\u2019s Wallops Flight Facility<\/a>, Wallops Island, Va.<\/strong><\/p>\n\n\n<div id=\"\" class=\"nasa-gb-align-full width-full maxw-full padding-x-3 padding-y-0 article_a hds-module hds-module-full wp-block-nasa-blocks-credits-and-details\">\n<section class=\"padding-x-0 padding-top-5 padding-bottom-2 desktop:padding-top-7 desktop:padding-bottom-9\">\n\t<div class=\"grid-row grid-container maxw-widescreen padding-0\">\n\t\t<div 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class=\"article-tags\"><li class=\"article-tag\"><a href=\"https:\/\/www.nasa.gov\/universe\/galaxies\/active-galaxies\/\">Active Galaxies<\/a><\/li><li class=\"article-tag\"><a href=\"https:\/\/www.nasa.gov\/goddard\/\">Goddard Space Flight Center<\/a><\/li><li class=\"article-tag\"><a href=\"https:\/\/www.nasa.gov\/science-instruments\/\">Science Instruments<\/a><\/li><li class=\"article-tag\"><a href=\"https:\/\/www.nasa.gov\/missions\/scientific-balloons\/\">Scientific Balloons<\/a><\/li><li class=\"article-tag\"><a href=\"https:\/\/www.nasa.gov\/universe\/stars\/supernovae\/\">Supernovae<\/a><\/li><li class=\"article-tag\"><a href=\"https:\/\/science.nasa.gov\/universe\/\" rel=\"noopener\">The Universe<\/a><\/li><\/ul><\/div><\/div>\n\t<\/div>\n<\/section>\n\t<\/div>","protected":false},"excerpt":{"rendered":"<p>Engineers and scientists have shipped NASA\u2019s ComPair instrument to Fort Sumner, New Mexico, ahead of its scheduled August flight early in NASA\u2019s 2023 fall balloon campaign. ComPair\u2019s goal is to test new technologies for studying gamma rays, the highest-energy form of light. It was assembled and tested at NASA\u2019s Goddard Space Flight Center in Greenbelt, [...]<\/p>\n","protected":false},"author":175,"featured_media":475896,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"nasa_hds_core_meta_l10n":"en-US","nasa_hds_core_meta_article_editor":"","nasa_hds_core_meta_article_contacts":[],"nasa_hds_core_meta_article_topic":"","nasa_hds_core_meta_linked_locations":[],"nasa_hds_core_meta_article_related_articles":[],"hds_migrate_meta_pr_release_id":"","hds_migrate_meta_pr_release_type":"","nasa_hds_core_meta_location_x":"","nasa_hds_core_meta_location_y":"","nasa_hds_core_meta_gallery_images":[],"footnotes":""},"categories":[11342,2857,2831,11402,11336,2659],"news-tags":[],"internal-terms":[4215,3913,10837,4212],"coauthors":[],"parsely":{"version":"1.1.0","meta":{"@context":"https:\/\/schema.org","@type":"NewsArticle","headline":"NASA\u2019s ComPair Gamma-Ray Hunting Mission Prepares for Balloon Flight","url":"https:\/\/www.nasa.gov\/universe\/nasas-compair-gamma-ray-hunting-mission-prepares-for-balloon-flight\/","mainEntityOfPage":{"@type":"WebPage","@id":"https:\/\/www.nasa.gov\/universe\/nasas-compair-gamma-ray-hunting-mission-prepares-for-balloon-flight\/"},"thumbnailUrl":"https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/07\/compair_tvac_img_2231_half.jpg?w=150&h=150&crop=1","image":{"@type":"ImageObject","url":"https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/07\/compair_tvac_img_2231_half.jpg"},"articleSection":"The Universe","author":[{"@type":"Person","name":"Jeanette Kazmierczak"}],"creator":["Jeanette Kazmierczak"],"publisher":{"@type":"Organization","name":"NASA","logo":"https:\/\/www.nasa.gov\/wp-content\/themes\/nasa\/assets\/images\/nasa-logo.svg"},"keywords":["The Universe","Active Galaxies","Goddard Space Flight Center","Science Instruments","Scientific Balloons","Supernovae"],"dateCreated":"2023-07-20T18:00:00Z","datePublished":"2023-07-20T18:00:00Z","dateModified":"2023-08-14T23:19:48Z"},"rendered":"<meta name=\"parsely-title\" content=\"NASA\u2019s ComPair Gamma-Ray Hunting Mission Prepares for Balloon Flight\" \/>\n<meta name=\"parsely-link\" content=\"https:\/\/www.nasa.gov\/universe\/nasas-compair-gamma-ray-hunting-mission-prepares-for-balloon-flight\/\" \/>\n<meta name=\"parsely-type\" content=\"post\" \/>\n<meta name=\"parsely-image-url\" content=\"https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/07\/compair_tvac_img_2231_half.jpg?w=150&h=150&crop=1\" \/>\n<meta name=\"parsely-pub-date\" content=\"2023-07-20T18:00:00Z\" \/>\n<meta name=\"parsely-section\" content=\"The Universe\" \/>\n<meta name=\"parsely-tags\" content=\"The Universe,Active Galaxies,Goddard Space Flight Center,Science Instruments,Scientific Balloons,Supernovae\" \/>\n<meta name=\"parsely-author\" content=\"Jeanette Kazmierczak\" \/>","tracker_url":"https:\/\/cdn.parsely.com\/keys\/nasa.gov\/p.js"},"read_time":3,"time_ago":"11 months","featured_image":{"id":475896,"file":"https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/07\/compair_tvac_img_2231_half.jpg","title":"compair_tvac_img_2231_half","alt":"People in white clean suits and hair nets stand on a yellow platform with railings in front of a large blue cylinder.","caption":""},"_links":{"self":[{"href":"https:\/\/www.nasa.gov\/wp-json\/wp\/v2\/posts\/475550"}],"collection":[{"href":"https:\/\/www.nasa.gov\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.nasa.gov\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.nasa.gov\/wp-json\/wp\/v2\/users\/175"}],"replies":[{"embeddable":true,"href":"https:\/\/www.nasa.gov\/wp-json\/wp\/v2\/comments?post=475550"}],"version-history":[{"count":2,"href":"https:\/\/www.nasa.gov\/wp-json\/wp\/v2\/posts\/475550\/revisions"}],"predecessor-version":[{"id":489455,"href":"https:\/\/www.nasa.gov\/wp-json\/wp\/v2\/posts\/475550\/revisions\/489455"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.nasa.gov\/wp-json\/wp\/v2\/media\/475896"}],"wp:attachment":[{"href":"https:\/\/www.nasa.gov\/wp-json\/wp\/v2\/media?parent=475550"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.nasa.gov\/wp-json\/wp\/v2\/categories?post=475550"},{"taxonomy":"news-tags","embeddable":true,"href":"https:\/\/www.nasa.gov\/wp-json\/wp\/v2\/news-tags?post=475550"},{"taxonomy":"internal-terms","embeddable":true,"href":"https:\/\/www.nasa.gov\/wp-json\/wp\/v2\/internal-terms?post=475550"},{"taxonomy":"author","embeddable":true,"href":"https:\/\/www.nasa.gov\/wp-json\/wp\/v2\/coauthors?post=475550"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}