ISSN:
1089-7623
Source:
AIP Digital Archive
Topics:
Physics
,
Electrical Engineering, Measurement and Control Technology
Notes:
An 8×8 array of Langmuir probes has been developed for measuring turbulent plasma parameters in tokamak edge plasmas. Fluctuations in plasma density ñ(r,θ,t) and floating potential φ˜f(r,θ,t) can be measured by the diagnostic, as well as the steady state (dc), profiles in n¯e(r,θ) and φ¯f(r,θ). The signal from each probe is processed by individual custom pre-amplifier circuits and the data from all probes are acquired simultaneously by a custom CAMAC based data acquisition system. This data acquisition system has 10 bit resolution with a maximum speed of 20 MS/s and has applications for various types of tokamak diagnostic arrays. Design considerations for the probe array and data acquisition system are discussed. Preliminary results from the probe array will be presented. © 1995 American Institute of Physics.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.1146337
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