Solar X-ray Polarization Detector(SXPD): A solar flare detector based on GMPD

Solar X-ray Polarization Detector(SXPD): A solar flare detector based on GMPD | Research Square window.SnipcartSettings = { analytics: { enabled: false } }; (function() { var accessVector = localStorage.getItem('access_vector') || ''; window.dataLayer = window.dataLayer || []; if (accessVector) { window.dataLayer.push({ user: { profile: { profileInfo: { snid: accessVector } } } }); } })(); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-K279D39R'); Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Advisory Board Help Center Sign In Submit a Preprint Cite Share Download PDF Research Article Solar X-ray Polarization Detector(SXPD): A solar flare detector based on GMPD Haoran Liu, Hongbang Liu, Difan Yi, Tianyi Xiong, Huanbo Feng, and 5 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-7518440/v1 This work is licensed under a CC BY 4.0 License Status: Under Review Version 1 posted 8 You are reading this latest preprint version Abstract We present the design of a solar flare detector, the Solar X-ray Polarization Detector (SXPD), based on the Gas Microchannel Plate Pixel Detector (GMPD). The primary scientific objectives are to measure the polarization state and spectrum of individual solar flares in the soft X-ray band, where polarized bremsstrahlung radiation is expected to be produced by high-energy electron beams accelerated within the solar magnetic field and plasma. The SXPD comprises two key modules: a Pinhole Imaging Tube and a GMPD module. This paper provides a detailed description of the structural design and performance of the SXPD. With its imaging capability, the SXPD can resolve individual solar flares in the soft X-ray energy range with an angular resolution of 1.5 arcsec. For M-class and larger solar flare events, the detector achieves a Minimum Detectable Polarization (MDP) of 5% within 30 minutes. Solar flare X-ray Polarization Gas Detector Pinhole imaging GMPD SXPD Full Text Additional Declarations No competing interests reported. Cite Share Download PDF Status: Under Review Version 1 posted Editorial decision: Revision requested 20 Mar, 2026 Reviews received at journal 20 Mar, 2026 Reviewers agreed at journal 03 Mar, 2026 Reviewers agreed at journal 22 Nov, 2025 Reviewers invited by journal 14 Sep, 2025 Editor assigned by journal 05 Sep, 2025 Submission checks completed at journal 03 Sep, 2025 First submitted to journal 02 Sep, 2025 You are reading this latest preprint version Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. As a division of Research Square Company, we’re committed to making research communication faster, fairer, and more useful. We do this by developing innovative software and high quality services for the global research community. Our growing team is made up of researchers and industry professionals working together to solve the most critical problems facing scientific publishing. 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