掠入射聚焦型脉冲星探测器的能量响应标定
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摘要
通过地面及在轨试验对掠入射聚焦型脉冲星探测器(FXPT)能量响应特性进行了标定.掠入射聚焦型脉冲星探测器采用X射线掠入射聚焦探测体制,探测来源于X射线脉冲星发射的X射线光子,精确测定X射线光子的到达时刻和能量.标定结果表明探测器在全设计能段内具有良好的线性响应特性,光子能量测量误差优于0.5%.能量分辨率误差优于10%,能量分辨率可达156 eV@6.4 keV.探测器入轨后对超新星遗迹的能谱观测表明,探测器在轨光子能量标记准确,能量分辨率与地面标定结果一致.地面及在轨标定结果为掠入射聚焦型脉冲星探测器的数据处理和科学分析提供了重要的依据.
The energy response of focusing X-ray pulsar telescope( FXPT) is calibrated by ground and inorbit tests. FXPT is an X-ray grazing incidence focusing telescope. FXPT detects the X-ray photons emitted from X-ray pulsars and accurately measures the arrival time and energy of these X-ray photons. The calibration results show that the telescope has good linear response in the full design energy scale and the error of the photon energy is better than 0. 5%. The telescope energy resolution is up to 156 eV @6. 4 keV and the energy resolution error is better than 10%. The energy spectrum observation of the supernova remnants shows that the energy response of the telescope is accurate and its in-orbit energy resolution is equal to the ground calibration result. The ground and in-orbit calibration results provide an important basis for FXPT scientific data analysis.
The energy response of focusing X-ray pulsar telescope( FXPT) is calibrated by ground and inorbit tests. FXPT is an X-ray grazing incidence focusing telescope. FXPT detects the X-ray photons emitted from X-ray pulsars and accurately measures the arrival time and energy of these X-ray photons. The calibration results show that the telescope has good linear response in the full design energy scale and the error of the photon energy is better than 0. 5%. The telescope energy resolution is up to 156 eV @6. 4 keV and the energy resolution error is better than 10%. The energy spectrum observation of the supernova remnants shows that the energy response of the telescope is accurate and its in-orbit energy resolution is equal to the ground calibration result. The ground and in-orbit calibration results provide an important basis for FXPT scientific data analysis.
引文
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[4]李连升,梅志武,吕政欣,等.X射线脉冲星导航探测技术发展综述[J].兵器装备工程学报,2017,38(5):1-9.LI L S,MEI Z W,LV Z X,et al.Overview of the development of x-ray pulsar navigation detection technology[J].Journal of Sichuan Ordnance,2017,38(5):1-9.
[5]韦飞,王世金,梁金宝,等.风云二号03批卫星空间环境监测器[J].地球物理学报,2013,56(1):1-11.WEI F,WANG S J,LIANG J B,et al.Next generation space environment monitor(SEM)for FY-2 satellite series[J].Chinese Journal of Geophysics,2013,56(1):1-11.
[6]彭文溪,王焕玉,张承模,等.嫦娥一号X射线谱仪定标[J].核电子学与探测技术,2009,29(2):235-239.PENG W X,WANG H Y,ZHANG C M,et al.Calibration of CE-1 X-ray spectrometer[J].Nuclear Electronics&Detection Technology,2009,29(2):235-239.
[7]孔令高,王世金,林华安,韦飞.FY-2C卫星太阳X射线探测器性能定[J].空间科学学报,2006,26(5):370-376.KONG L G,WANG S J,LIN H A,WEI F.Calibration results of solar X-ray detector aboard on FY-2C[J].Chin.J.space sci.,2006,26(5):370-376.
[8]张承模,马宇倩,王焕玉.神舟二号飞船船载X射线探测器标定及在轨性能[J].核电子学与探测技术,2005,25(1):1-7.ZHANG C M,MA Y Q,WANG H Y.On border the spaceship“Shen Zhou 2”X ray detector and its calibration and performance at orbit[J].Nuclear Electronics&Detection Technology,2005,25(1):1-7.
[9]何会林,李延国,吴伯冰.HXMT探测器能量响应矩阵的计算[J].高能物理与核物理,2005,29(7):687-690.HE H L,LI Y G,WU B B.Calculation of the HXMT detector energy response matrix[J].High energy physics and nuclear physics,2005,29(7):687-690.
[10]徐亚东,介万奇,查刚强,等.CdZnTe平面探测器对低能X/γ射线的光谱响应[J].光学学报,2009,29(11):3072-3077.Paul Sellin,XU Y D,JIE W Q,et al.A study on the low energy X/γ-ray spectral response of Cd Zn Te planar detectors[J].Acta Optica Sinica,2009,29(11):3072-3077.
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