Recent developments with Cornell’s ZEUS-2 spectrometer at APEX

Recent developments with Cornell’s ZEUS-2 spectrometer at APEX
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APEX 上康奈尔大学 ZEUS-2 光谱仪的最新进展

DOI:
10.1117/12.2629453
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发表时间:
2022
期刊:
and Far-Infrared Detectors and Instrumentation for Astronomy XI
影响因子:
--
通讯作者:
Higdon, Sarah J.
Higdon, Sarah J.
中科院分区:
--
文献类型:
--
作者:
Rooney, Christopher;Peng, Bo;Stacey, Gordon J.;Nikola, Thomas;Vishwas, Amit;Ferkinhoff, Carl;Ball, Catie;Lamarche, Cody;Higdon, James L.;Higdon, Sarah J.

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我们介绍了康奈尔的第二代z(红移)和早期宇宙光谱仪(Zeus-2)的最新进展。ZEUS-2是一种长缝梯形光栅光谱仪,最初使用NIST过渡边缘传感(TES)测辐射热计阵列在350微米和450微米大地窗口中提供R∼1000型光谱分析。我们已经扩展了它的能力,也覆盖了200微米的窗口,并提供了我们在阿塔卡马探路者实验(APEX)望远镜上进行的2019年观测活动中新阵列的第一光数据。我们还讨论了我们为提高观测效率和噪声性能而实施的各种增强措施,包括识别和缓解硬件中的振动,以及提高探测器温度控制软件的稳定性和健壮性。此外,我们还实现了几个与望远镜控制系统接口的软件例程。这些改进在我们最近2021年11月至12月的观测活动中得到了展示,导致了更高的可靠性和易操作性,以及更高的灵敏度。实现了一种数据驱动的软件流水线,利用阵列上所有300个探测器的数据来消除共模噪声,并通过稳健地检测不稳定的探测器并在观测期间禁用它们来进一步提高噪声性能。
We present recent developments on Cornell’s 2nd generation z (redshift) and Early Universe Spectrometer (ZEUS-2). ZEUS-2 is a long-slit echelle-grating spectrometer, originally implemented to deliver R∼1000 spectroscopy in the 350-, and 450-micron telluric windows using NIST Transition-Edge Sensed (TES) bolometer arrays. We have expanded its capabilities to also cover the 200-micron window, and present first-light data for the new array from our 2019 observing campaign on the Atacama Pathfinder EXperiment (APEX) telescope. We also discuss the various enhancements we have implemented to improve observing efficiency and noise performance, including identifying and mitigating vibrations in hardware and improving the stability and robustness of the control software for the detector temperature. Furthermore, we have implemented several software routines to interface with the telescope control systems. These improvements, demonstrated during our recent observing campaign in Nov-Dec 2021, resulted in enhanced reliability and ease of operation, as well as increased sensitivity. A data-driven software pipeline, leveraging data from all 300 detectors on the array to remove common-mode noise, was implemented, and noise performance was further improved by robustly detecting unstable detectors and disabling them during observations.
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