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Pollux测试平台:从近紫外到远紫外偏振测量

Pollux test bench: from NUV to FUV polarimetric measurements

LIRA, Observatoire de Paris, Université PSL, Sorbonne Université, Université Paris Cité, CY Cergy Paris Université, CNRS(巴黎天文台,PSL大学,索邦大学,巴黎西岱大学,CY塞尔吉巴黎大学,法国国家科学研究中心)

Adrien Girardot, Coralie Neiner, Jean-Michel Reess, Olivier Dupuis, Margarita Carret

AI总结:

Pollux测试平台用于验证近紫外到远紫外偏振测量的性能,通过创新设计提升技术成熟度并首次实现远紫外偏振测试。

摘要:

Pollux是一种高分辨率光谱偏振计,由一个欧洲联合体为HWO提出。当前的Pollux设计具有四个光谱偏振通道,其中三个位于紫外范围。对于近紫外(NUV)[236-472 nm]和中紫外(MUV)[118-236 nm]通道,偏振计由镁氟化物(MgF2)制成的波片和棱镜组成,这是一种双折射材料。然而,远紫外(FUV)通道[100-123 nm]无法使用此类双折射材料。因此,FUV通道的偏振计仅由镜子组成,采用创新的组装方式。在本次报告中,我们旨在详细说明将用于验证这些不同偏振计性能的测试平台架构,作为HWO GOMaP的一部分。由于我们在真空紫外(VUV)范围内工作,测试平台在无尘房间的真空腔中运行。我们将讨论基于波长的平台可调节架构以及将实施的测量方法,以测试偏振计是否能实现10^-3的精度要求。通过此测试平台,我们将成功提高紫外光谱偏振计的技术成熟度(TRL),并首次开发出测试远紫外光谱偏振度的方法。

英文摘要:

Pollux is a high-resolution spectropolarimeter proposed by an European consortium for HWO. The current design of Pollux features four spectropolarimetric channels, three of which are in the UV range. For the near-UV (NUV) [236-472 nm] and mid-UV (MUV) [118-236 nm] channels, the polarimeters consist of waveplates and prisms made of MgF2, a birefringent material. However, no such birefringent material can be used for the far-UV (FUV) channel [100-123 nm]. Therefore, the polarimeter for this FUV channel is composed solely of mirrors in an innovative assembly. In this talk, we aim to detail the architecture of the test bench that will allow us to validate the performance of these different polarimeters, as part of the HWO GOMaP. Given that we are working in the vacuum ultraviolet (VUV) range, the test bench operates in a vacuum chamber in a clean room. We will discuss the adaptable architecture of the bench based on wavelength and the measurement methodology that we will implement to test if the polarimeters achieve the precision of $10^{-3}$ required for the Pollux instrument. With this test bench, we will successfully increase the Technology Readiness Level (TRL) of UV spectropolarimeters and, for the first time, develop a means to test FUV spectropolarimetry.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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