Polarization Reconstruction Study of Wide Field-of-view Photoelectric Polarimeter for POLAR-2/LPD
The Low-Energy X-ray Polarization Detector (LPD) is one of the payloads in the POLAR-2 experiment, which is planned as an external payload for deployment on the China Space Station in 2026. The LPD is specifically designed to observe the polarization of gamma-ray burst prompt emissions in the energy...
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IOP Publishing
2025-01-01
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| Online Access: | https://doi.org/10.3847/1538-4365/ad9470 |
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| author | Zu-Ke Feng Hong-Bang Liu Di-Fan Yi Li-Rong Xie Cong Dai Huan-Bo Feng Jian-Chao Sun Jiang He Yuan-Hao Wang Rui-Ting Ma Bin-Long Wang Qian-Nan Mai Jiang-Chuan Tuo Qian Zhong Zhen-Yu Tang Qian Liu Fei Xie Shuang-Nan Zhang En-Wei Liang |
| author_facet | Zu-Ke Feng Hong-Bang Liu Di-Fan Yi Li-Rong Xie Cong Dai Huan-Bo Feng Jian-Chao Sun Jiang He Yuan-Hao Wang Rui-Ting Ma Bin-Long Wang Qian-Nan Mai Jiang-Chuan Tuo Qian Zhong Zhen-Yu Tang Qian Liu Fei Xie Shuang-Nan Zhang En-Wei Liang |
| author_sort | Zu-Ke Feng |
| collection | DOAJ |
| description | The Low-Energy X-ray Polarization Detector (LPD) is one of the payloads in the POLAR-2 experiment, which is planned as an external payload for deployment on the China Space Station in 2026. The LPD is specifically designed to observe the polarization of gamma-ray burst prompt emissions in the energy range of 2–10 keV, with a preliminary design featuring a wide field-of-view (FOV) of ±45°. This observation is achieved using an array of X-ray photoelectric polarimeters. Because of the wide FOV design of the detector, nearly all photons impinge on the detector off-axis. This paper investigates the polarization reconstruction of a photoelectric polarimeter for off-axis photons. It was found that the reconstruction of the emission azimuthal angles of photoelectron tracks is the main factor affecting the shape of the modulation function for off-axis radiation. Therefore, a modulation function correction method based on Monte Carlo (MC) simulation is proposed. This MC simulation-based method is applied to both simulated and experimental data to correct the modulation function for off-axis radiation. The reconstruction results demonstrate that this method can accurately determine the polarization degree and polarization angle of photons under different conditions. While we tested up to 45° off-axis angles due to our ±45° FOV, the method is theoretically applicable to off-axis angles up to ∼90°. |
| format | Article |
| id | doaj-art-53eefb5abdda4f078a952f22b5bab813 |
| institution | OA Journals |
| issn | 0067-0049 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | The Astrophysical Journal Supplement Series |
| spelling | doaj-art-53eefb5abdda4f078a952f22b5bab8132025-08-20T02:36:06ZengIOP PublishingThe Astrophysical Journal Supplement Series0067-00492025-01-0127613010.3847/1538-4365/ad9470Polarization Reconstruction Study of Wide Field-of-view Photoelectric Polarimeter for POLAR-2/LPDZu-Ke Feng0https://orcid.org/0009-0001-4885-0747Hong-Bang Liu1https://orcid.org/0000-0003-1695-3263Di-Fan Yi2https://orcid.org/0009-0004-3301-4692Li-Rong Xie3Cong Dai4Huan-Bo Feng5Jian-Chao Sun6Jiang He7https://orcid.org/0000-0003-4856-5783Yuan-Hao Wang8Rui-Ting Ma9Bin-Long Wang10Qian-Nan Mai11Jiang-Chuan Tuo12Qian Zhong13Zhen-Yu Tang14Qian Liu15Fei Xie16https://orcid.org/0000-0002-0105-5826Shuang-Nan Zhang17https://orcid.org/0000-0001-5586-1017En-Wei Liang18https://orcid.org/0000-0002-7044-733XGuangxi Key Laboratory for Relativistic Astrophysics, School of Physical Science and Technology, Guangxi University , Nanning 530004, People's Republic of China ; liuhb@gxu.edu.cnGuangxi Key Laboratory for Relativistic Astrophysics, School of Physical Science and Technology, Guangxi University , Nanning 530004, People's Republic of China ; liuhb@gxu.edu.cnSchool of Physics Science, University of Chinese Academy of Sciences , Beijing 100049, People's Republic of ChinaSchool of Physics Science, University of Chinese Academy of Sciences , Beijing 100049, People's Republic of ChinaGuangxi Key Laboratory for Relativistic Astrophysics, School of Physical Science and Technology, Guangxi University , Nanning 530004, People's Republic of China ; liuhb@gxu.edu.cnGuangxi Key Laboratory for Relativistic Astrophysics, School of Physical Science and Technology, Guangxi University , Nanning 530004, People's Republic of China ; liuhb@gxu.edu.cnKey Laboratory of Particle Astrophysics, Institute of High Energy Physics , Chinese Academy of Sciences, Beijing 100049, People's Republic of ChinaKey Laboratory of Particle Astrophysics, Institute of High Energy Physics , Chinese Academy of Sciences, Beijing 100049, People's Republic of ChinaKey Laboratory of Particle Astrophysics, Institute of High Energy Physics , Chinese Academy of Sciences, Beijing 100049, People's Republic of ChinaSchool of Physics Science, University of Chinese Academy of Sciences , Beijing 100049, People's Republic of ChinaSchool of Physics Science, University of Chinese Academy of Sciences , Beijing 100049, People's Republic of ChinaGuangxi Key Laboratory for Relativistic Astrophysics, School of Physical Science and Technology, Guangxi University , Nanning 530004, People's Republic of China ; liuhb@gxu.edu.cnGuangxi Key Laboratory for Relativistic Astrophysics, School of Physical Science and Technology, Guangxi University , Nanning 530004, People's Republic of China ; liuhb@gxu.edu.cnGuangxi Key Laboratory for Relativistic Astrophysics, School of Physical Science and Technology, Guangxi University , Nanning 530004, People's Republic of China ; liuhb@gxu.edu.cnBeijing Institute of Spacecraft Environment Engineering , Beijing 100094, People's Republic of ChinaSchool of Physics Science, University of Chinese Academy of Sciences , Beijing 100049, People's Republic of ChinaGuangxi Key Laboratory for Relativistic Astrophysics, School of Physical Science and Technology, Guangxi University , Nanning 530004, People's Republic of China ; liuhb@gxu.edu.cnKey Laboratory of Particle Astrophysics, Institute of High Energy Physics , Chinese Academy of Sciences, Beijing 100049, People's Republic of ChinaGuangxi Key Laboratory for Relativistic Astrophysics, School of Physical Science and Technology, Guangxi University , Nanning 530004, People's Republic of China ; liuhb@gxu.edu.cnThe Low-Energy X-ray Polarization Detector (LPD) is one of the payloads in the POLAR-2 experiment, which is planned as an external payload for deployment on the China Space Station in 2026. The LPD is specifically designed to observe the polarization of gamma-ray burst prompt emissions in the energy range of 2–10 keV, with a preliminary design featuring a wide field-of-view (FOV) of ±45°. This observation is achieved using an array of X-ray photoelectric polarimeters. Because of the wide FOV design of the detector, nearly all photons impinge on the detector off-axis. This paper investigates the polarization reconstruction of a photoelectric polarimeter for off-axis photons. It was found that the reconstruction of the emission azimuthal angles of photoelectron tracks is the main factor affecting the shape of the modulation function for off-axis radiation. Therefore, a modulation function correction method based on Monte Carlo (MC) simulation is proposed. This MC simulation-based method is applied to both simulated and experimental data to correct the modulation function for off-axis radiation. The reconstruction results demonstrate that this method can accurately determine the polarization degree and polarization angle of photons under different conditions. While we tested up to 45° off-axis angles due to our ±45° FOV, the method is theoretically applicable to off-axis angles up to ∼90°.https://doi.org/10.3847/1538-4365/ad9470Gamma-ray burstsPolarimetersAstronomical instrumentation |
| spellingShingle | Zu-Ke Feng Hong-Bang Liu Di-Fan Yi Li-Rong Xie Cong Dai Huan-Bo Feng Jian-Chao Sun Jiang He Yuan-Hao Wang Rui-Ting Ma Bin-Long Wang Qian-Nan Mai Jiang-Chuan Tuo Qian Zhong Zhen-Yu Tang Qian Liu Fei Xie Shuang-Nan Zhang En-Wei Liang Polarization Reconstruction Study of Wide Field-of-view Photoelectric Polarimeter for POLAR-2/LPD The Astrophysical Journal Supplement Series Gamma-ray bursts Polarimeters Astronomical instrumentation |
| title | Polarization Reconstruction Study of Wide Field-of-view Photoelectric Polarimeter for POLAR-2/LPD |
| title_full | Polarization Reconstruction Study of Wide Field-of-view Photoelectric Polarimeter for POLAR-2/LPD |
| title_fullStr | Polarization Reconstruction Study of Wide Field-of-view Photoelectric Polarimeter for POLAR-2/LPD |
| title_full_unstemmed | Polarization Reconstruction Study of Wide Field-of-view Photoelectric Polarimeter for POLAR-2/LPD |
| title_short | Polarization Reconstruction Study of Wide Field-of-view Photoelectric Polarimeter for POLAR-2/LPD |
| title_sort | polarization reconstruction study of wide field of view photoelectric polarimeter for polar 2 lpd |
| topic | Gamma-ray bursts Polarimeters Astronomical instrumentation |
| url | https://doi.org/10.3847/1538-4365/ad9470 |
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