Design of a neutron penumbral-aperture microscope with 10-. mu. m resolution

Conference · Tue May 01 00:00:00 EDT 1990

OSTI ID:6779994

Ress, D; Lerche, R A; Ellis, R J; Lane, S M

We are currently designing a 10-{mu}m resolution neutron penumbral-aperture microscope to diagnose high-convergence targets at the Nova laser facility. To achieve such high resolution, the new microscope will require substantial improvements in three areas. First, we have designed thick penumbral apertures with extremely sharp cutoffs over a useful ({approx}100 {mu}m) field of view; fabrication of such apertures appears feasible using gold electroplating techniques. Second, the limited field of view and required close proximity of the aperture to the target (2 cm) necessitates a durable mounting and alignment system with {plus}25 {mu}m accuracy. Finally, a neutron detector containing 160,000 scintillator elements is required; readout and optimization of this large array are outstanding issues. 5 refs., 3 figs.

• Research Organization: Lawrence Livermore National Lab., CA (USA)
• Sponsoring Organization: DOE/DP
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 6779994
• Report Number(s): UCRL-JC-103285; CONF-900557--15; ON: DE91000788
• Country of Publication: United States
• Language: English

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ALIGNMENT
APERTURES
DESIGN
IMAGE PROCESSING
LASER TARGETS
MEASURING INSTRUMENTS
MICROSCOPES
NEUTRON DETECTORS
NOVA FACILITY
OPENINGS
PERFORMANCE
PLASMA DIAGNOSTICS
PROCESSING
RADIATION DETECTORS
TARGETS