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Time-resolved RIXS experiment with pulse-by-pulse parallel readout data collection using X-ray free electron laser.
Lu, H; Gauthier, A; Hepting, M; Tremsin, A S; Reid, A H; Kirchmann, P S; Shen, Z X; Devereaux, T P; Shao, Y C; Feng, X; Coslovich, G; Hussain, Z; Dakovski, G L; Chuang, Y D; Lee, W S.
Affiliation
  • Lu H; Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, Stanford University, 2575 Sand Hill Road, Menlo Park, CA, 94025, USA.
  • Gauthier A; Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, Stanford University, 2575 Sand Hill Road, Menlo Park, CA, 94025, USA.
  • Hepting M; Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, Stanford University, 2575 Sand Hill Road, Menlo Park, CA, 94025, USA.
  • Tremsin AS; Space Sciences Laboratory, University of California at Berkeley, Berkeley, CA, 94720, USA.
  • Reid AH; Linac Coherent Light Source (LCLS), SLAC National Accelerator Laboratory, Menlo Park, CA, 94025, USA.
  • Kirchmann PS; Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, Stanford University, 2575 Sand Hill Road, Menlo Park, CA, 94025, USA.
  • Shen ZX; Geballe Laboratory for Advanced Materials, Departments of Physics and Applied Physics, Stanford University, Stanford, CA, 94305, USA.
  • Devereaux TP; Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, Stanford University, 2575 Sand Hill Road, Menlo Park, CA, 94025, USA.
  • Shao YC; Geballe Laboratory for Advanced Materials, Departments of Physics and Applied Physics, Stanford University, Stanford, CA, 94305, USA.
  • Feng X; Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, Stanford University, 2575 Sand Hill Road, Menlo Park, CA, 94025, USA.
  • Coslovich G; Geballe Laboratory for Advanced Materials, Departments of Physics and Applied Physics, Stanford University, Stanford, CA, 94305, USA.
  • Hussain Z; Department of Materials Science and Engineering, Stanford University, Stanford, CA, 94305, USA.
  • Dakovski GL; Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA.
  • Chuang YD; Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA.
  • Lee WS; Linac Coherent Light Source (LCLS), SLAC National Accelerator Laboratory, Menlo Park, CA, 94025, USA.
Sci Rep ; 10(1): 22226, 2020 Dec 17.
Article in En | MEDLINE | ID: mdl-33335197
ABSTRACT
Time-resolved resonant inelastic X-ray scattering (RIXS) is one of the developing techniques enabled by the advent of X-ray free electron laser (FEL). It is important to evaluate how the FEL jitter, which is inherent in the self-amplified spontaneous emission process, influences the RIXS measurement. Here, we use a microchannel plate (MCP) based Timepix soft X-ray detector to conduct a time-resolved RIXS measurement at the Ti L3-edge on a charge-density-wave material TiSe2. The fast parallel Timepix readout and single photon sensitivity enable pulse-by-pulse data acquisition and analysis. Due to the FEL jitter, low detection efficiency of spectrometer, and low quantum yield of RIXS process, we find that less than 2% of the X-ray FEL pulses produce signals, preventing acquiring sufficient data statistics while maintaining temporal and energy resolution in this measurement. These limitations can be mitigated by using future X-ray FELs with high repetition rates, approaching MHz such as the European XFEL in Germany and LCLS-II in the USA, as well as by utilizing advanced detectors, such as the prototype used in this study.
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Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: Sci Rep Year: 2020 Document type: Article
Fulltext
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Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: Sci Rep Year: 2020 Document type: Article