Thomson scattering on the large plasma device

Ghazaryan, S.; Kaloyan, M.; Gekelman, W.; Lucky, Z.; Vincena, S.; Tripathi, S. P.; Pribyl, P.; Niemann, C.

doi:10.1063/5.0099172

Thomson scattering on the large plasma device

Journal Article · Fri Aug 19 00:00:00 EDT 2022 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/5.0099172· OSTI ID:1979124

^[1]; ^[2]; ^[2]; Lucky, Z. ^[2]; ^[2]; ^[2]; Pribyl, P. ^[2]; ^[2]

University of California, Los Angeles, CA (United States); Univ. of California, Los Angeles, CA (United States)
University of California, Los Angeles, CA (United States)

We have developed a non-collective Thomson scattering diagnostic for measurements of electron density and temperature on the Large Plasma Device. A triple grating spectrometer with a tunable notch filter is used to discriminate the faint scattering signal from the stray light. In this paper, we describe the diagnostic and its calibration via Raman scattering and present the first measurements performed with the fully commissioned system. Depending on the discharge conditions, the measured densities and temperatures range from 4.0 × 10¹²to 2.8 × 10¹³ cm^-3 and from 1.2 to 6.8 eV, respectively. The variation of the measurement error with plasma parameters and discharges averaged is also discussed.

View Accepted Manuscript (DOE)

Research Organization:: University of California, Los Angeles, CA (United States)

Sponsoring Organization:: USDOE Office of Science (SC); National Science Foundation (NSF)

Grant/Contract Number:: FC02-07ER54918; SC0021133

OSTI ID:: 1979124

Alternate ID(s):: OSTI ID: 1882712

Journal Information:: Review of Scientific Instruments, Journal Name: Review of Scientific Instruments Journal Issue: 8 Vol. 93; ISSN 0034-6748

Publisher:: American Institute of Physics (AIP)Copyright Statement

Country of Publication:: United States

Language:: English

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47 OTHER INSTRUMENTATION
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