Scanning ion sensitive probe for plasma profile measurements in the boundary of the Alcator C-Mod tokamak

Journal Article · Wed May 15 00:00:00 EDT 2013 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.4807699· OSTI ID:22118562

Brunner, D.; LaBombard, B.; Ochoukov, R.; Whyte, D. ^[1]

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1. PSFC, MIT, Cambridge, Massachusetts 02139 (United States)

A new Ion Sensitive Probe head has been created for the outer-midplane scanning probe system on the Alcator C-Mod tokamak. The new probe head contains three elements: an ion sensitive probe to measure ion temperature and plasma potential, a Langmuir probe to measure electron temperature, density, and floating potential, and a second Langmuir probe to measure ion saturation current and the density fluctuations arising from ''blob'' events. The ion sensitive probe current is normalized to this measurement to reduced deleterious effects of the strong fluctuations. Design of the high heat flux probe (>100 MW/m{sup 2}) and initial results are presented.

• OSTI ID: 22118562
• Journal Information: Review of Scientific Instruments, Journal Name: Review of Scientific Instruments Journal Issue: 5 Vol. 84; ISSN 0034-6748; ISSN RSINAK
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ALCATOR DEVICE
CURRENTS
DENSITY
ELECTRON TEMPERATURE
FLUCTUATIONS
HEAD
HEAT FLUX
ION TEMPERATURE
IONS
LANGMUIR PROBE
PLASMA DENSITY
PLASMA POTENTIAL
PLASMA RADIAL PROFILES