High-resolution gamma-ray spectroscopy with a microwave-multiplexed transition-edge sensor array
High-resolution gamma-ray spectroscopy with a microwave-multiplexed transition-edge sensor array
复制标题
具有微波复用过渡边缘传感器阵列的高分辨率伽马射线光谱
DOI：
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发表时间：
2013
期刊：
影响因子：
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通讯作者：
J. Ullom
中科院分区：
文献类型：
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作者：
O. Noroozian;J. Mates;D. Bennett;J. Brevik;J. Fowler;Jiansong Gao;G. Hilton;R. Horansky;K. Irwin;Zhao Kang;D. Schmidt;L. Vale;J. Ullom
我们展示了非常高分辨率的光子光谱与微波复用双像素过渡边缘传感器（TES）阵列。我们测量了一个153Gd的光子源，在97 keV下获得了63 eV的能量分辨率，在TES下等效读出系统噪声为86 pA/Hz。读出电路由超导微波谐振器耦合到射频超导量子干涉装置组成，并将输入电流的变化转换为微波信号的相位变化。我们使用磁通斜坡调制来线性化响应并规避低频噪声。本演示建立了一条读取具有超过103个元素和光谱分辨能力R=λ/Δλ>103的低温x射线和伽马射线传感器阵列的路径。
We demonstrate very high resolution photon spectroscopy with a microwave-multiplexed two-pixel transition-edge sensor (TES) array. We measured a 153Gd photon source and achieved an energy resolution of 63 eV full-width-at-half-maximum at 97 keV and an equivalent readout system noise of 86 pA/Hz at the TES. The readout circuit consists of superconducting microwave resonators coupled to radio-frequency superconducting-quantum-interference-devices and transduces changes in input current to changes in phase of a microwave signal. We use flux-ramp modulation to linearize the response and evade low-frequency noise. This demonstration establishes one path for the readout of cryogenic X-ray and gamma-ray sensor arrays with more than 103 elements and spectral resolving powers R=λ/Δλ>103.