Pulse intensity characterization of the LCLS nanosecond double-bunch mode of operation

Sun, Y.; Decker, F.-J.; Turner, J.; Song, S.; Robert, A.; Zhu, D.

doi:10.1107/S160057751800348X

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Figure 2
(a) Pulse intensity correlation between the fast diode measurement of the summed-pulse intensities in each pulse (I₁+I₂) and the PIPS diode signal I_PIPS for a time separation $[\Delta T]$ = 8.75 ns. (b) Histogram of the summed-pulse intensities (I₁+I₂) distribution measured by the fast diode from 10⁵ shots. (c) Two-dimensional cumulative histogram of the pulse intensity ratio of fast diode summed-pulse intensity and PIPS diode (I₁+I₂)/I_PIPS as a function of the PIPS diode signal I_PIPS from 10⁵ shots. The color bar indicates counts. (d, e) Histograms and Gaussian fits (solid line) of the PIPS normalized pulse intensity of the pulse pairs (I₁+I₂)/I_PIPS for the two signal levels of I_PIPS indicated by the red and green areas in (c).

JOURNAL OF
SYNCHROTRON
RADIATION

ISSN: 1600-5775

Volume 25| Part 3| May 2018| Pages 642-649

https://doi.org/10.1107/S160057751800348X

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