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

Abstract

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 developments 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 minus}25 {mu}m accuracy. Finally, a neutron detector containing 160 000 scintillator elements is required. We plan to utilize clad-scintillator elements in this array, bonded together with a high-{ital Z} paint to eliminate recoil-proton crosstalk. Two schemes are under consideration for readout of this large array.

Authors:
; ; ;  [1]
  1. Lawrence Livermore National Laboratory, Livermore, CA (USA)
Publication Date:
OSTI Identifier:
6206127
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Journal Article
Journal Name:
Review of Scientific Instruments; (USA)
Additional Journal Information:
Journal Volume: 61:10; Journal ID: ISSN 0034-6748
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; LASER-PRODUCED PLASMA; PLASMA DIAGNOSTICS; MICROSCOPES; RESOLUTION; NOVA FACILITY; NEUTRON DETECTORS; DESIGN; ICF DEVICES; LAWRENCE LIVERMORE LABORATORY; SOLID SCINTILLATION DETECTORS; MEASURING INSTRUMENTS; NATIONAL ORGANIZATIONS; PLASMA; RADIATION DETECTORS; SCINTILLATION COUNTERS; THERMONUCLEAR DEVICES; US AEC; US DOE; US ERDA; US ORGANIZATIONS; 700102* - Fusion Energy- Plasma Research- Diagnostics

Citation Formats

Ress, D, Lerche, R A, Ellis, R J, and Lane, S M. Design of a neutron penumbral-aperture microscope with 10. mu. m resolution. United States: N. p., 1990. Web. doi:10.1063/1.1141680.
Ress, D, Lerche, R A, Ellis, R J, & Lane, S M. Design of a neutron penumbral-aperture microscope with 10. mu. m resolution. United States. https://doi.org/10.1063/1.1141680
Ress, D, Lerche, R A, Ellis, R J, and Lane, S M. 1990. "Design of a neutron penumbral-aperture microscope with 10. mu. m resolution". United States. https://doi.org/10.1063/1.1141680.
@article{osti_6206127,
title = {Design of a neutron penumbral-aperture microscope with 10. mu. m resolution},
author = {Ress, D and Lerche, R A and Ellis, R J and Lane, S M},
abstractNote = {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 developments 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 minus}25 {mu}m accuracy. Finally, a neutron detector containing 160 000 scintillator elements is required. We plan to utilize clad-scintillator elements in this array, bonded together with a high-{ital Z} paint to eliminate recoil-proton crosstalk. Two schemes are under consideration for readout of this large array.},
doi = {10.1063/1.1141680},
url = {https://www.osti.gov/biblio/6206127}, journal = {Review of Scientific Instruments; (USA)},
issn = {0034-6748},
number = ,
volume = 61:10,
place = {United States},
year = {1990},
month = {10}
}