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A photodiode amplifier system for pulse-by-pulse intensity measurement of an x-ray free electron laser
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10.1063/1.3701713
/content/aip/journal/rsi/83/4/10.1063/1.3701713
http://aip.metastore.ingenta.com/content/aip/journal/rsi/83/4/10.1063/1.3701713
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Response of PIN photodiode (S3950-09, Hamamatsu Photonics Co. Ltd. Japan) to irradiation of a pulsed laser (Legend Elite USP-HE, Coherent, Inc., CA, USA, wavelength of 800 nm, duration ∼100 fs, repetition rate 1 kHz, beam size 5 mm in diameter). The photodiode was reverse biased at 24 V. Signal waveforms in regions A, B, and C are shown in the upper panel (a), (b), and (c). The relationships between the output charges estimated from the waveforms and the incident pulse energies are shown in the lower panel (d).

Image of FIG. 2.
FIG. 2.

A simplified schematic of the front-end electronics.

Image of FIG. 3.
FIG. 3.

Block diagram of the signal processing system of the photodiode amplifier.

Image of FIG. 4.
FIG. 4.

Relationship between directly and indirectly measured XFEL pulse intensities. The beam energy is 9.87 keV at peak. Beam size is limited to 1 mm × 1 mm by a front end slit.

Image of FIG. 5.
FIG. 5.

Relationship between directly measured XFEL pulse intensities and pulse energies.

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/content/aip/journal/rsi/83/4/10.1063/1.3701713
2012-04-12
2014-04-24
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: A photodiode amplifier system for pulse-by-pulse intensity measurement of an x-ray free electron laser
http://aip.metastore.ingenta.com/content/aip/journal/rsi/83/4/10.1063/1.3701713
10.1063/1.3701713
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