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Title: An x-ray technique for precision laser beam synchronization

Abstract

A new x-ray technique for recording the relative arrival times of multiple laser beams at a common target with better than [plus minus]10-ps accuracy has been implemented at the Nova laser facility. 80-ps, 3[omega] Nova beams are focused to separate locations on a gold ribbon target viewed from the side. The measurement consists of using well-characterized reentrant x-ray streak cameras for one-dimensional streaked imaging of the [gt]3-keV x rays emanating from these isolated laser plasmas. After making the necessary corrections for the differential laser, x-ray and electron transit times involved, timing offsets as low as [plus minus]7 ps are resolved, and on subsequent shots, corrected for, verified, and independently checked. This level of synchronization proved critical in meeting the power balance requirements for indirectly driven pulse-shaped Nova implosions.

Authors:
; ; ; ; ;  [1]
  1. Lawrence Livermore National Laboratory, P. O. Box 5508, Livermore, California 94550 (United States)
Publication Date:
OSTI Identifier:
7060335
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Journal Article
Journal Name:
Review of Scientific Instruments; (United States)
Additional Journal Information:
Journal Volume: 66:1; Journal ID: ISSN 0034-6748
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; NOVA FACILITY; PLASMA DIAGNOSTICS; X-RAY DETECTION; DESIGN; PERFORMANCE; KEV RANGE 01-10; STREAK CAMERAS; TIME RESOLUTION; CAMERAS; DETECTION; ENERGY RANGE; KEV RANGE; MEASURING INSTRUMENTS; RADIATION DETECTION; RADIATION DETECTORS; RESOLUTION; TIMING PROPERTIES; 700320* - Plasma Diagnostic Techniques & Instrumentation- (1992-)

Citation Formats

Landen, O L, Lerche, R A, Hay, R G, Hammel, B A, Kalantar, D, and Cable, M D. An x-ray technique for precision laser beam synchronization. United States: N. p., 1995. Web. doi:10.1063/1.1146222.
Landen, O L, Lerche, R A, Hay, R G, Hammel, B A, Kalantar, D, & Cable, M D. An x-ray technique for precision laser beam synchronization. United States. doi:10.1063/1.1146222.
Landen, O L, Lerche, R A, Hay, R G, Hammel, B A, Kalantar, D, and Cable, M D. Sun . "An x-ray technique for precision laser beam synchronization". United States. doi:10.1063/1.1146222.
@article{osti_7060335,
title = {An x-ray technique for precision laser beam synchronization},
author = {Landen, O L and Lerche, R A and Hay, R G and Hammel, B A and Kalantar, D and Cable, M D},
abstractNote = {A new x-ray technique for recording the relative arrival times of multiple laser beams at a common target with better than [plus minus]10-ps accuracy has been implemented at the Nova laser facility. 80-ps, 3[omega] Nova beams are focused to separate locations on a gold ribbon target viewed from the side. The measurement consists of using well-characterized reentrant x-ray streak cameras for one-dimensional streaked imaging of the [gt]3-keV x rays emanating from these isolated laser plasmas. After making the necessary corrections for the differential laser, x-ray and electron transit times involved, timing offsets as low as [plus minus]7 ps are resolved, and on subsequent shots, corrected for, verified, and independently checked. This level of synchronization proved critical in meeting the power balance requirements for indirectly driven pulse-shaped Nova implosions.},
doi = {10.1063/1.1146222},
journal = {Review of Scientific Instruments; (United States)},
issn = {0034-6748},
number = ,
volume = 66:1,
place = {United States},
year = {1995},
month = {1}
}