The 2 Degrees of Freedom Facility in Firenze for the study of Weak Forces
The 2 Degrees of Freedom Facility in Firenze for the study of Weak Forces
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DOI：
10.1088/1742-6596/228/1/012037
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发表时间：
2010-05
期刊：
影响因子：
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通讯作者：
L. Marconi;R. Stanga;M. Lorenzini;C. Grimani;M. Bassan;G. Pucacco;L. Fiore;R. Rosa;F. Garufi;L. Milano
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文献类型：
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作者：
L. Marconi;R. Stanga;M. Lorenzini;C. Grimani;M. Bassan;G. Pucacco;L. Fiore;R. Rosa;F. Garufi;L. Milano
丽莎测试质量（TM）对所有6个自由度（DoF）上的沿着弱力敏感。为了评估在不同自由度上操作的读出器和致动器的串扰的影响，需要进行广泛的地面试验。为了最好地代表飞行条件，我们在佛罗伦萨开发了一个具有2个软自由度的设施。使用该设备，我们测量沿着2个软DoF同时作用的力和刚度，并且更具体地，我们将能够消除TM和读取TM位置的电容位置传感器之间的残余耦合，并且测量具有闭合反馈回路的致动串扰。现在设备已经准备好了，这里我们报告一下调试测试和第一次测量的情况。
The LISA test-mass (TM) is sensitive to weak forces along all 6 Degrees of Freedom (DoFs). Extensi ve ground test ing is required in order to evaluate the influence of cross-talks of read-outs and actuators operating on different DoFs. To best represent the flight conditions, we developed in Firenze a facility with 2 soft DoFs. Using this facility we measure the forces and stiffnesses acting simultaneously along the 2 soft DoFs, and, more specifically, we will be able to de b ug residual couplings between the TM and the capacitive position sensor that reads the TM position, and to measure actuation cross talks with closed feedback loop. The facility is now ready, and here we report on the co mmi ssioning test s, and on the first measurements.