{"title":"GRAINE 2018 experiment: Performance evaluation of gamma-ray telescope utilizing nuclear emulsion","authors":"Yuya Nakamura","doi":"10.22323/1.356.0039","DOIUrl":null,"url":null,"abstract":"The observation of cosmic gamma-rays is crucial to understanding high-energy astrophysical phe- nomena. The Gamma-Ray Astro-Imager with Nuclear Emulsion (GRAINE) aims to precisely ob- serve gamma-ray sources with a balloon-borne gamma-ray telescope utilizing nuclear emulsion, which is a three-dimensional tracking detector with a sub-micron spatial resolution. We launched the third balloon experiment, GRAINE 2018, on April 26, 2018 as a demonstration project. The flight was successful, data acquisition was completed, and we are analyzing the data now. We evaluated the angular resolution for gamma-rays in the 100-300 MeV energy region of the con- verter’s flight data, and it is 0.57◦ (tanθ ≃zenith angle<0.5), 0.81◦ (0.5<tanθ <1.0). This is better than the required performance value, which is 1.0◦ in 100- MeV energy region.","PeriodicalId":303007,"journal":{"name":"Proceedings of The 4th KMI International Symposium — PoS(KMI2019)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2019-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Proceedings of The 4th KMI International Symposium — PoS(KMI2019)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.22323/1.356.0039","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
The observation of cosmic gamma-rays is crucial to understanding high-energy astrophysical phe- nomena. The Gamma-Ray Astro-Imager with Nuclear Emulsion (GRAINE) aims to precisely ob- serve gamma-ray sources with a balloon-borne gamma-ray telescope utilizing nuclear emulsion, which is a three-dimensional tracking detector with a sub-micron spatial resolution. We launched the third balloon experiment, GRAINE 2018, on April 26, 2018 as a demonstration project. The flight was successful, data acquisition was completed, and we are analyzing the data now. We evaluated the angular resolution for gamma-rays in the 100-300 MeV energy region of the con- verter’s flight data, and it is 0.57◦ (tanθ ≃zenith angle<0.5), 0.81◦ (0.5
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