Design and construction of a compact, high-repetition-rate ultrafast electron diffraction instrument-Reference-Cited by-同舟云学术

Design and construction of a compact, high-repetition-rate ultrafast electron diffraction instrument

Published:2023-05-01 Issue:5 Volume:94 Page:
ISSN:0034-6748
Container-title:Review of Scientific Instruments
language:en
Short-container-title:

Author:

Freelon Byron¹²^ORCID,Rohwer Timm³^ORCID,Zong Alfred¹⁴^ORCID,Kogar Anshul¹⁵^ORCID,Zhou Hengyun¹⁶^ORCID,Wong Liang Jie¹⁷^ORCID,Ergeçen Emre¹^ORCID,Gedik Nuh¹^ORCID

Affiliation:

1. Department of Physics, Massachusetts Institute of Technology 1 , 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, USA

2. Physics Department and Texas Center for Superconductivity, University of Houston 2 , Houston, Texas 77004, USA

3. Center for Free Electron Laser Science at Deutsches Electronen Synchrotron (DESY) 3 , Hamburg 22361, Germany

4. Department of Chemistry, University of California, Berkeley 4 , Berkeley, California 94720, USA

5. Department of Physics and Astronomy, University of California, Los Angeles 5 , Los Angeles, California 90095, USA

6. Department of Physics, Harvard University 6 , Cambridge, Massachusetts 02139, USA

7. School of Electrical and Electronic Engineering, Nanyang Technological University 7 , Singapore 639798

Abstract

We present the design and performance of a compact ultrafast electron diffraction instrument. The diffractometer provides a means of examining time-resolved ultrafast dynamical properties of solids. The system’s utilization is discussed in terms of instrument parameters and diffraction data from selected condensed matter samples. The difractometer’s performance is highlighted in terms of detection sensitivity, instrumental temporal resolution, and the electron beam transverse coherence length. Following specific details of the construction, we present a practical discussion of parameters such as repetition rate and provide advice on general construction approaches for laboratory-based, keV ultrafast electron diffractometers. In addition, design guidance for constructing a compact electron gun source that is well-suited for studying diffraction from hard condensed matter is given. A unique data acquisition scheme, utilizing high laser repetition rates, is presented.

Funder

Gordon and Betty Moore Foundation

Welch Foundation

Publisher

AIP Publishing

Subject

Instrumentation

Link

https://pubs.aip.org/aip/rsi/article-pdf/doi/10.1063/5.0094278/17848284/053305_1_5.0094278.pdf

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