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Title: High quantum efficiency photocathode simulation for the investigation of novel structured designs

Abstract

A computer model in CST Studio Suite has been developed to evaluate several novel geometrically enhanced photocathode designs. This work was aimed at identifying a structure that would increase the total electron yield by a factor of two or greater in the 1–30 keV range. The modeling software was used to simulate the electric field and generate particle tracking for several potential structures. The final photocathode structure has been tailored to meet a set of detector performance requirements, namely, a spatial resolution of <40 μm and a temporal spread of 1–10 ps. As a result, we present the details of the geometrically enhanced photocathode model and resulting static field and electron emission characteristics.

Authors:
 [1];  [1];  [1];  [1];  [1];  [2];  [2];  [2];  [2];  [3]
  1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  2. National Security Technologies LLC, Livermore, CA (United States)
  3. General Atomics, San Diego, CA (United States)
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1289371
Report Number(s):
LLNL-JRNL-685720
Journal ID: ISSN 0034-6748; RSINAK
Grant/Contract Number:  
AC52-07NA27344
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Review of Scientific Instruments
Additional Journal Information:
Journal Volume: 85; Journal Issue: 11; Journal ID: ISSN 0034-6748
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; 97 MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE; photocathodes; spatial resolution; X-ray detectors; secondary emission; carrier generation

Citation Formats

MacPhee, A. G., Nagel, S. R., Bell, P. M., Bradley, D. K., Landen, O. L., Opachich, Y. P., Ross, P. W., Huffman, E., Koch, J. A., and Hilsabeck, T. J.. High quantum efficiency photocathode simulation for the investigation of novel structured designs. United States: N. p., 2014. Web. doi:10.1063/1.4893942.
MacPhee, A. G., Nagel, S. R., Bell, P. M., Bradley, D. K., Landen, O. L., Opachich, Y. P., Ross, P. W., Huffman, E., Koch, J. A., & Hilsabeck, T. J.. High quantum efficiency photocathode simulation for the investigation of novel structured designs. United States. doi:10.1063/1.4893942.
MacPhee, A. G., Nagel, S. R., Bell, P. M., Bradley, D. K., Landen, O. L., Opachich, Y. P., Ross, P. W., Huffman, E., Koch, J. A., and Hilsabeck, T. J.. Tue . "High quantum efficiency photocathode simulation for the investigation of novel structured designs". United States. doi:10.1063/1.4893942. https://www.osti.gov/servlets/purl/1289371.
@article{osti_1289371,
title = {High quantum efficiency photocathode simulation for the investigation of novel structured designs},
author = {MacPhee, A. G. and Nagel, S. R. and Bell, P. M. and Bradley, D. K. and Landen, O. L. and Opachich, Y. P. and Ross, P. W. and Huffman, E. and Koch, J. A. and Hilsabeck, T. J.},
abstractNote = {A computer model in CST Studio Suite has been developed to evaluate several novel geometrically enhanced photocathode designs. This work was aimed at identifying a structure that would increase the total electron yield by a factor of two or greater in the 1–30 keV range. The modeling software was used to simulate the electric field and generate particle tracking for several potential structures. The final photocathode structure has been tailored to meet a set of detector performance requirements, namely, a spatial resolution of <40 μm and a temporal spread of 1–10 ps. As a result, we present the details of the geometrically enhanced photocathode model and resulting static field and electron emission characteristics.},
doi = {10.1063/1.4893942},
journal = {Review of Scientific Instruments},
number = 11,
volume = 85,
place = {United States},
year = {Tue Sep 02 00:00:00 EDT 2014},
month = {Tue Sep 02 00:00:00 EDT 2014}
}

Journal Article:
Free Publicly Available Full Text
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Cited by: 1 work
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