Design of neutron streak camera for fusion diagnostics

Journal Article · Fri Jan 01 04:00:00 EST 1982 · Proc. Soc. Photo-Opt. Instrum. Eng.; (United States)

OSTI ID:6636440

Wang, C L; Kalibjian, R; Singh, M S

The D-T burn time for advanced laser-fusion targets is calculated to be very short, < 50 ps. The authors describe the design of a neutron streak camera of 16 ps resolving time that can be used to study the temporal history of fusion burn. The cathode of the neutron streak camera is sensitive to neutrons and is curved such that the difference in the neutron path lengths from a point source to various parts of the cathode is compensated by electron transit times within the streak tube. Thus the cathode can be made large for high sensitivity, without sacrificing time resolution. The cathode is coated with 1 ..mu..m UO/sub 2/. Each fission fragment leaving the cathode generates 400 secondary electrons that are all < 20 eV. These electrons are focussed to a point with an extractor and an anode, and are then purified with an electrostatic deflector. The electron beam is streaked and detected with the standard streak camera techniques. Careful shielding is needed for x-ray from the fusion target and general background. It appears that the neutron streak camera can be a viable and unique tool for studying temporal history of fusion burns in D-T plasmas of a few keV ion temperature. 3 references, 5 figures, 1 table.

• Research Organization: Lawrence Livermore National Lab., CA
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 6636440
• Journal Information: Proc. Soc. Photo-Opt. Instrum. Eng.; (United States), Journal Name: Proc. Soc. Photo-Opt. Instrum. Eng.; (United States) Vol. 348; ISSN SPIEC
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700208* -- Fusion Power Plant Technology-- Inertial Confinement Technology
BACKGROUND RADIATION
CAMERAS
CATHODES
DESIGN
ELECTRODES
FOCUSING
IMPLOSIONS
LASER IMPLOSIONS
NEUTRON CAMERAS
PERFORMANCE
PHOTOGRAPHY
RADIATIONS
RESOLUTION
SENSITIVITY
SHIELDING
STREAK PHOTOGRAPHY
THERMONUCLEAR IGNITION
TIME DEPENDENCE
TIME RESOLUTION
TIMING PROPERTIES