First results from the far-infrared polarimeter system on the Madison Symmetric Torus reversed field pinch

Autor:	D. L. Brower, N. E. Lanier, Y. Jiang, Cary Forest, D. J. Holly, Jay Anderson
Rok vydání:	1999
Předmět:	Physics Reversed field pinch business.industry Polarimetry Polarimeter Laser Madison Symmetric Torus law.invention Interferometry Optics law Astronomical interferometer Laser power scaling business Instrumentation
Zdroj:	Review of Scientific Instruments. 70:718-721
ISSN:	1089-7623 0034-6748
Popis:	The far-infrared laser interferometer on the Madison Symmetric Torus has recently been upgraded to allow simultaneous interferometry and polarimetry measurements. Centered around a heterodyne laser system that operates at λ≃432 μm, the diagnostic has a frequency response of 1 kHz for the polarimeter and up to 1 MHz for the interferometer. The distribution of laser power through the 11 chord system is managed with wire mesh beamsplitters. Concurrent with the system upgrade to polarimetry, a detailed study of the effect of the wire mesh beamsplitters on beam polarization was conducted. The study shows that the mesh characteristics must be included to extract the polarimetry phase measurement from the raw data. The modifications to the data analysis as well as preliminary five chord polarimetry profile data are presented.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::ad8fab7d703ad5e5c3676ef07bb04445 https://doi.org/10.1063/1.1149490 Zobrazit plný text záznamu