ISSN:
1089-7623
Source:
AIP Digital Archive
Topics:
Physics
,
Electrical Engineering, Measurement and Control Technology
Notes:
Extensive experimental and numerical studies have been performed to assess the feasibility of polarimeter systems to be installed on a number of devices. The systems employ an amplitude ratio technique similar to that of Soltwisch, with a 45° polarizer angle to divide probe beam equally between two mixer arrays. At present, a nine-channel system has been constructed to perform measurements of central q value and also the current density profile by scanning the entire system. Laboratory test results will be discussed together with installation plans. The system has the advantage that the amplitude ratio is very insensitive to ellipticity, which can be determined from the phase difference between equivalent detector signals. These properties make the polarimeter attractive, especially for high-field, high-density plasmas where the elliptization effects are large. In this case Ψp ≠const λ2∫neBpz.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.1140167
Permalink