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Title: A microchannel plate intensified, subnanosecond, x-ray imaging camera

Abstract

We have developed a microchannel plate intensified, subnanosecond x-ray detector for x-ray imaging experiments. It consists of an x-ray photocathode, a microchannel plate, electrostatic focusing optics and a subnanosecond phosphor. The detector is used for one dimensional imaging and spectroscopic measurements. Signals are recorded using either a one dimensional Reticon camera or a streak camera. The microchannel plates employ an x-ray photocathode (CuI or CsI) deposited on the front surface of the microchannel plate to enhance their soft x-ray efficiency. Electrostatic focusing of the electrons exiting the microchannel plate also enhances the gain of the detector by an order of magnitude. The electrons are accelerated to 20 kV before striking a fast phosphor (Indium doped Cadmium Sulfide). The detector output is coupled to a Reticon camera or a streak camera with a fiber optic array. We have built and calibrated more than twenty microchannel plate intensified detectors. Efficiencies in excess of 1000 (Watts/cm/sup 2/ output per Watt/cm/sup 2/ input) have been demonstrated. The time response of the detector is less than 500 ps. The efficiency of the CuI and CsI x-ray photocathodes have been measured from 450 eV to 1300 eV at the Stanford Synchrotron Radiation Laboratory. Data are presentedmore » on the efficiency, time response, spectral response and the spatial resolution of the detectors. 8 refs., 12 figs.« less

Authors:
; ;
Publication Date:
Research Org.:
Lawrence Livermore National Lab., CA (USA)
OSTI Identifier:
5605791
Report Number(s):
UCRL-100784; CONF-890809-1
ON: DE89017781
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Conference
Resource Relation:
Conference: 9. international conference on vacuum ultraviolet radiation physics, Honolulu, HI, USA, 14-18 Aug 1989; Other Information: Portions of this document are illegible in microfiche products
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; STREAK CAMERAS; X-RAY DETECTION; CALIBRATION; DESIGN; EFFICIENCY; IMAGES; LASER-PRODUCED PLASMA; MICROCHANNEL ELECTRON MULTIPLIERS; PHOTOCATHODES; SPATIAL RESOLUTION; SPECTRAL RESPONSE; CAMERAS; CATHODES; DETECTION; ELECTRODES; ELECTRON MULTIPLIERS; ELECTRON TUBES; MEASURING INSTRUMENTS; PLASMA; RADIATION DETECTION; RADIATION DETECTORS; RESOLUTION; 440101* - Radiation Instrumentation- General Detectors or Monitors & Radiometric Instruments

Citation Formats

Carter, M R, McKinley, B J, and Tirsell, K G. A microchannel plate intensified, subnanosecond, x-ray imaging camera. United States: N. p., 1989. Web.
Carter, M R, McKinley, B J, & Tirsell, K G. A microchannel plate intensified, subnanosecond, x-ray imaging camera. United States.
Carter, M R, McKinley, B J, and Tirsell, K G. 1989. "A microchannel plate intensified, subnanosecond, x-ray imaging camera". United States.
@article{osti_5605791,
title = {A microchannel plate intensified, subnanosecond, x-ray imaging camera},
author = {Carter, M R and McKinley, B J and Tirsell, K G},
abstractNote = {We have developed a microchannel plate intensified, subnanosecond x-ray detector for x-ray imaging experiments. It consists of an x-ray photocathode, a microchannel plate, electrostatic focusing optics and a subnanosecond phosphor. The detector is used for one dimensional imaging and spectroscopic measurements. Signals are recorded using either a one dimensional Reticon camera or a streak camera. The microchannel plates employ an x-ray photocathode (CuI or CsI) deposited on the front surface of the microchannel plate to enhance their soft x-ray efficiency. Electrostatic focusing of the electrons exiting the microchannel plate also enhances the gain of the detector by an order of magnitude. The electrons are accelerated to 20 kV before striking a fast phosphor (Indium doped Cadmium Sulfide). The detector output is coupled to a Reticon camera or a streak camera with a fiber optic array. We have built and calibrated more than twenty microchannel plate intensified detectors. Efficiencies in excess of 1000 (Watts/cm/sup 2/ output per Watt/cm/sup 2/ input) have been demonstrated. The time response of the detector is less than 500 ps. The efficiency of the CuI and CsI x-ray photocathodes have been measured from 450 eV to 1300 eV at the Stanford Synchrotron Radiation Laboratory. Data are presented on the efficiency, time response, spectral response and the spatial resolution of the detectors. 8 refs., 12 figs.},
doi = {},
url = {https://www.osti.gov/biblio/5605791}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Sat Jul 01 00:00:00 EDT 1989},
month = {Sat Jul 01 00:00:00 EDT 1989}
}

Conference:
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