The Mirror Fusion Test Facility (MFTF‐B), under construction at LLNL, requires measurement of the neutral gas density in high magnetic fields near the plasma at several axial regions. This background gas pressure (BGP) diagnostic will help us understand the role of background neutrals in particle and power balance, particularly in the maintenance of the cold halo plasma that shields the hot core plasma from the returning neutrals. The BGP consists of several cold‐cathode, magnetron‐type gauges stripped of their permanent magnets, and utilizes the MFTF‐B ambient B‐field in strengths of 5–25 kG. Similar gauges have operated in TMX‐U in B‐fields up to 3 kG. To determine how well the gauges will perform, we assembled a test stand which operated magnetron gauges in an external, uniform magnetic field of up to 30 kG, over a pressure range of 10−8–10−5 Torr, at several cathode voltages. This paper describes the test stand and presents the results of the tests.
Skip Nav Destination
Article navigation
May 1986
Research Article|
May 01 1986
Operation of cold‐cathode magnetron gauges in high magnetic fields Available to Purchase
S. R. Thomas, Jr.;
S. R. Thomas, Jr.
Lawrence Livermore National Laboratory, Livermore, California 94550
Search for other works by this author on:
D. A. Goerz;
D. A. Goerz
Lawrence Livermore National Laboratory, Livermore, California 94550
Search for other works by this author on:
W. L. Pickles
W. L. Pickles
Lawrence Livermore National Laboratory, Livermore, California 94550
Search for other works by this author on:
S. R. Thomas, Jr.
Lawrence Livermore National Laboratory, Livermore, California 94550
D. A. Goerz
Lawrence Livermore National Laboratory, Livermore, California 94550
W. L. Pickles
Lawrence Livermore National Laboratory, Livermore, California 94550
J. Vac. Sci. Technol. A 4, 1736–1739 (1986)
Article history
Received:
October 09 1985
Accepted:
December 20 1985
Citation
S. R. Thomas, D. A. Goerz, W. L. Pickles; Operation of cold‐cathode magnetron gauges in high magnetic fields. J. Vac. Sci. Technol. A 1 May 1986; 4 (3): 1736–1739. https://doi.org/10.1116/1.573968
Download citation file:
Pay-Per-View Access
$40.00
Sign In
You could not be signed in. Please check your credentials and make sure you have an active account and try again.
Citing articles via
What more can be done with XPS? Highly informative but underused approaches to XPS data collection and analysis
Donald R. Baer, Merve Taner Camci, et al.
Low-resistivity molybdenum obtained by atomic layer deposition
Kees van der Zouw, Bernhard Y. van der Wel, et al.
Perspective on improving the quality of surface and material data analysis in the scientific literature with a focus on x-ray photoelectron spectroscopy (XPS)
George H. Major, Joshua W. Pinder, et al.
Related Content
A tandem mirror in place at MFTF
Physics Today (September 1981)
The (changing) MFTF vacuum environment
J. Vac. Sci. Technol. A (April 1983)
Diagnostic control, data acquisition, and data processing at MFTF‐B (invited)
Rev. Sci. Instrum. (August 1986)
The leak‐checking and testing of the first yin–yang magnet for the Mirror Fusion Test Facility (MFTF)
J. Vac. Sci. Technol. A (April 1983)
E parallel to B energy analyzer for measurement of end‐loss ions from the Mirror Fusion Test Facility‐B
Rev. Sci. Instrum. (May 1985)