Fast imaging diagnostics on the C-2U advanced beam-driven field-reversed configuration device
- Tri Alpha Energy, P.O. Box 7010, Rancho Santa Margarita, California 92688 (United States)
The C-2U device employed neutral beam injection, end-biasing, and various particle fueling techniques to sustain a Field-Reversed Configuration (FRC) plasma. As part of the diagnostic suite, two fast imaging instruments with radial and nearly axial plasma views were developed using a common camera platform. To achieve the necessary viewing geometry, imaging lenses were mounted behind re-entrant viewports attached to welded bellows. During gettering, the vacuum optics were retracted and isolated behind a gate valve permitting their removal if cleaning was necessary. The axial view incorporated a stainless-steel mirror in a protective cap assembly attached to the vacuum-side of the viewport. For each system, a custom lens-based, high-throughput optical periscope was designed to relay the plasma image about half a meter to a high-speed camera. Each instrument also contained a remote-controlled filter wheel, set between shots to isolate a particular hydrogen or impurity emission line. The design of the camera platform, imaging performance, and sample data for each view is presented.
- OSTI ID:
- 22596524
- Journal Information:
- Review of Scientific Instruments, Vol. 87, Issue 11; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA); ISSN 0034-6748
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
43 PARTICLE ACCELERATORS
ACCELERATOR FACILITIES
BEAM INJECTION
BEAMS
CAMERAS
DESIGN
FEDERAL RADIATION COUNCIL
FIELD-REVERSED THETA PINCH DEVICES
GEOMETRY
HYDROGEN
IMAGES
LENSES
MIRRORS
OPTICS
PERISCOPES
PLASMA
STAINLESS STEELS
VALVES
WELDED JOINTS