A compact multichannel spectrometer for Thomson scattering

Journal Article · Mon Oct 15 04:00:00 EDT 2012 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.4733547· OSTI ID:22093933

Schoenbeck, N. L.; Schlossberg, D. J.; Dowd, A. S.; Fonck, R. J.; Winz, G. R. ^[1]

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1. Department of Engineering Physics, University of Wisconsin, Madison, Wisconsin 53706 (United States)

The availability of high-efficiency volume phase holographic (VPH) gratings and intensified CCD (ICCD) cameras have motivated a simplified, compact spectrometer for Thomson scattering detection. Measurements of T{sub e} < 100 eV are achieved by a 2971 l/mm VPH grating and measurements T{sub e} > 100 eV by a 2072 l/mm VPH grating. The spectrometer uses a fast-gated ({approx}2 ns) ICCD camera for detection. A Gen III image intensifier provides {approx}45% quantum efficiency in the visible region. The total read noise of the image is reduced by on-chip binning of the CCD to match the 8 spatial channels and the 10 spectral bins on the camera. Three spectrometers provide a minimum of 12 spatial channels and 12 channels for background subtraction.

• OSTI ID: 22093933
• Journal Information: Review of Scientific Instruments, Journal Name: Review of Scientific Instruments Journal Issue: 10 Vol. 83; ISSN 0034-6748; ISSN RSINAK
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
AVAILABILITY
CAMERAS
CHARGE-COUPLED DEVICES
CONFINEMENT
DETECTION
EV RANGE
HOLOGRAPHY
IMAGE INTENSIFIERS
IMAGES
NOISE
PLASMA
PLASMA DIAGNOSTICS
QUANTUM EFFICIENCY
SENSORS
SPECTROMETERS
THOMSON SCATTERING