Effect of Magnetic Fields on TiAu TES Bolometers for the SAFARI Instrument on the SPICA FIR Telescope
Effect of Magnetic Fields on TiAu TES Bolometers for the SAFARI Instrument on the SPICA FIR Telescope
复制标题
磁场对 SPICA FIR 望远镜上 SAFARI 仪器的 TiAu TES 辐射热测量计的影响
DOI：
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发表时间：
2012
期刊：
影响因子：
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通讯作者：
B. Jackson
中科院分区：
文献类型：
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作者：
R. Hijmering;P. Khosropanah;M. Ridder;M. Lindeman;L. Gottardi;M. Bruijn;J. Kuur;P. Korte;J.R. Gao;H. Hoevers;B. Jackson
在荷兰空间研究所（SRON），我们正在为SPICA望远镜上的SAFARI成像光谱仪开发过渡边缘传感器（TES）测辐射热计。根据SPICA望远镜目前的设计，预计背景磁场约为高斯，波动为百分之几。为了设计有效的屏蔽，需要很好地理解这种外部磁场对测辐射热计的影响。我们提出了一个调查的结果，磁场的TES测辐射热计的性能。在这个实验中，我们使用了一个Ti/Au TES测辐射热计，它的测量NEP为5.0×10−19 W/Hz 1/2。TES暴露于不同强度的平行和垂直磁场中，并确定基线和响应度。我们看到，测辐射热计是敏感的垂直磁场，但相对不敏感的平行磁场。周期为30 mG的波动作为垂直磁场的函数存在。
At the Netherlands Institute for Space Research (SRON) we are developing Transition Edge Sensors (TES) bolometers for the SAFARI Imaging Spectrometer on the SPICA telescope. With the current design of the SPICA telescope a background magnetic field of about a Gauss with fluctuations of a couple percent is expected. The effect of this external magnetic field on the bolometer needs to be well understood in order to design effective shielding. We present the results of an investigation of magnetic field on the performance of TES bolometers. For this experiment we used a Ti/Au TES bolometer which has a measured NEP of 5.0×10−19 W/Hz1/2. The TES is exposed to a parallel and perpendicular magnetic field of varying strength and the baseline and responsivity are determined. We see that the bolometers are sensitive to the perpendicular field but are relative insensitive to the parallel magnetic field. Fluctuations with a period of 30 mG are present as function of perpendicular magnetic field.