Design and Construction of a Fast Ion Loss Faraday Cup Array Diagnostic for JET

Technical Report · Mon Apr 26 04:00:00 EDT 2004

DOI:https://doi.org/10.2172/827927· OSTI ID:827927

Darrow, D S ^[1]; Bauumel, S; Cecil, F E; Kiptily, V; Ellis, R; Pedrick, L; Werner, A

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1. Princeton Plasma Physics Laboratory

A thin foil Faraday cup array is being built to measure the loss of 3.5 MeV alpha particles and MeV ion cyclotron heating (ICH) tail ions on JET. It will consist of nine detectors spread over five different poloidal locations and three radial positions. They will measure the poloidal distribution and radial scrape off of the losses. The detectors will be comprised of four layers of thin (2.5 micron) Ni foil, giving some resolution of the lost particle energy distribution as different ranges of energies will stop in different layers of the detector. One detector will utilize eight thinner (1.0 micron) foils to obtain a better resolved energy distribution. These detectors will accept particles incident up to 45{sup o} from the normal to the foils.

• Research Organization: Princeton Plasma Physics Lab., Princeton, NJ (US)
• Sponsoring Organization: USDOE Office of Science (SC) (US)
• DOE Contract Number: AC02-76CH03073
• OSTI ID: 827927
• Report Number(s): PPPL-3947
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ALPHA PARTICLES
CONSTRUCTION
CYCLOTRONS
DESIGN
DIAGNOSTICS
DISTRIBUTION
ENERGY SPECTRA
FARADAY CUPS
HEATING
RESOLUTION
TAIL IONS
TOKAMAKS