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

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.

doi:10.1063/1.4893942

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

Journal Article · Tue Sep 02 00:00:00 EDT 2014 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.4893942· OSTI ID:1289371

MacPhee, A. G. ^[1]; Nagel, S. R. ^[1]; Bell, P. M. ^[1]; Bradley, D. K. ^[1]; Landen, O. L. ^[1]; Opachich, Y. P. ^[2]; Ross, P. W. ^[2]; Huffman, E. ^[2]; Koch, J. A. ^[2]; Hilsabeck, T. J. ^[3]

Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
National Security Technologies LLC, Livermore, CA (United States)
General Atomics, San Diego, CA (United States)

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.

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Research Organization:: Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

Sponsoring Organization:: USDOE

Grant/Contract Number:: AC52-07NA27344

OSTI ID:: 1289371

Report Number(s):: LLNL-JRNL-685720; RSINAK

Journal Information:: Review of Scientific Instruments, Vol. 85, Issue 11; ISSN 0034-6748

Publisher:: American Institute of Physics (AIP)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 3 works

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References (12)

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Cited By (1)

Structured photocathodes for improved high-energy x-ray efficiency in streak cameras Opachich, Y. P.; Bell, P. M.; Bradley, D. K. Review of Scientific Instruments, Vol. 87, Issue 11 https://doi.org/10.1063/1.4961302	journal	August 2016

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