Structured Photocathodes for Improved High-Energy X-Ray Efficiency in Streak Cameras

Opachich, Y. P.; Chen, N.; Bell, P. M.; Bradley, D. K.; Feng, J.; Gopal, A.; Hatch, B.; Hilsabeck, T. J.; Huffman, E.; Koch, J. A.; Landen, O. L.; MacPhee, A. G.; Nagel, S. R.; Udin, S.

doi:10.1063/1.4961302

Structured Photocathodes for Improved High-Energy X-Ray Efficiency in Streak Cameras

Conference · Thu May 19 00:00:00 EDT 2016

DOI:https://doi.org/10.1063/1.4961302· OSTI ID:1570379

Opachich, Y. P. ^[1]; Chen, N. ^[2]; Bell, P. M. ^[3]; Bradley, D. K. ^[3]; Feng, J. ^[4]; Gopal, A. ^[2]; Hatch, B. ^[3]; Hilsabeck, T. J. ^[5]; Huffman, E. ^[1]; Koch, J. A. ^[1]; Landen, O. L. ^[3]; MacPhee, A. G. ^[3]; Nagel, S. R. ^[3]; Udin, S. ^[2]

National Security Technologies, LLC. (NSTec), Mercury, NV (United States)
Nanoshift
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
General Atomics

We have designed and fabricated a structured streak camera photocathode to provide enhanced efficiency for high-energy X-rays. This gold coated photocathode was tested in a Streaked Polar Instrumentation for Diagnosing Energetic Radiation, and compared side by side against a conventional flat thin-film photocathode. Results show that the measured electron yield enhancement at energies ranging from 1 - 10 keV scale well with predictions, and that the total enhancement can be more than double. The spatial resolution of the streak camera does not show degradation in the structured region. We predict that the temporal resolution of the detector will also not be affected, as it is currently dominated by the slit size. This demonstration with Au motivates exploration of comparable enhancements with CsI, and may revolutionize X-ray streak camera photocathode design. The details of the photocathode design and performance testing will be presented.

Research Organization:: Nevada National Security Site/National Security Technologies, LLC (United States)

Sponsoring Organization:: USDOE National Nuclear Security Administration (NNSA)

DOE Contract Number:: AC52-06NA25946

OSTI ID:: 1570379

Report Number(s):: DOE/NV/25946--2838

Country of Publication:: United States

Language:: English

References (11)

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Performance of a CsI photocathode in a hard x-ray streak camera Hara, Toru; Tanaka, Yoshihito; Kitamura, Hideo Review of Scientific Instruments, Vol. 71, Issue 10 https://doi.org/10.1063/1.1311935	journal	January 2000
Pulse-dilation enhanced gated optical imager with 5 ps resolution (invited) Hilsabeck, T. J.; Hares, J. D.; Kilkenny, J. D. Review of Scientific Instruments, Vol. 81, Issue 10 https://doi.org/10.1063/1.3479111	journal	October 2010
The characterization of x‐ray photocathodes in the 0.1–10‐keV photon energy region Henke, B. . L.; Knauer, J. P.; Premaratne, K. Journal of Applied Physics, Vol. 52, Issue 3 https://doi.org/10.1063/1.329789	journal	March 1981
An improved model for ultraviolet- and x-ray-induced electron emission from CsI Boutboul, T.; Akkerman, A.; Gibrekhterman, A. Journal of Applied Physics, Vol. 86, Issue 10 https://doi.org/10.1063/1.371601	journal	November 1999
Measuring x-ray burn history with the Streaked Polar Instrumentation for Diagnosing Energetic Radiation (SPIDER) at the National Ignition Facility (NIF) Khan, S. F.; Bell, P. M.; Bradley, D. K. SPIE Optical Engineering + Applications, SPIE Proceedings https://doi.org/10.1117/12.930032	conference	October 2012
Precision fabrication of large area silicon-based geometrically enhanced x-ray photocathodes using plasma etching Opachich, Y. P.; Chen, N.; Bell, P. M. SPIE Optical Engineering + Applications, SPIE Proceedings https://doi.org/10.1117/12.2186622	conference	August 2015
High quantum efficiency photocathode simulation for the investigation of novel structured designs Opachich, Y. P.; Ross, P. W.; MacPhee, A. G. Review of Scientific Instruments, Vol. 85, Issue 11 https://doi.org/10.1063/1.4893942	journal	November 2014
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High performance imaging streak camera for the National Ignition Facility Opachich, Y. P.; Kalantar, D. H.; MacPhee, A. G. Review of Scientific Instruments, Vol. 83, Issue 12 https://doi.org/10.1063/1.4769753	journal	December 2012

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46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
Streak Cameras
Structured Photocathodes
high-energy x-ray

Structured Photocathodes for Improved High-Energy X-Ray Efficiency in Streak Cameras

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References (11)

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