Photon Counting System for Time-resolved Experiments in Multibunch Mode

Puzic, A.; Korhonen, T.; Kalantari, B.; Raabe, Jörg; Quitmann, C.; Jüllig, Patrick; Bommer, Lars; Goll, D.; Schütz, Gisela; Wintz, Sebastian; Strache, Thomas; Körner, Michael; Markó, D.; Bunce, Christopher M.; Faßbender, J.

doi:10.1080/08940881003702056

Cited by 35 publications

(34 citation statements)

References 6 publications

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“…MHz master clock of the synchrotron light source [24]. The temporal resolution for the experiments presented here was 200 ps.…”

Section: Introductionmentioning

confidence: 99%

Unexpected field-induced dynamics in magnetostrictive microstructured elements under isotropic strain

Finizio¹,

Wintz²,

Gliga³

et al. 2018

J. Phys.: Condens. Matter

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We investigated the influence of an isotropic strain on the magnetization dynamics of microstructured magnetostrictive CoFeB (CoFeB) elements with time-resolved scanning transmission x-ray microscopy. We observed that the application of isotropic strain leads to changes in the behavior of the microstructured magnetostrictive elements that cannot be fully explained by the volume magnetostriction term. Therefore, our results prompt for an alternative explanation to the current models used for the interpretation of the influence of mechanical strain on the dynamical processes of magnetostrictive materials.

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“…MHz master clock of the synchrotron light source [24]. The temporal resolution for the experiments presented here was 200 ps.…”

Section: Introductionmentioning

confidence: 99%

Unexpected field-induced dynamics in magnetostrictive microstructured elements under isotropic strain

Finizio¹,

Wintz²,

Gliga³

et al. 2018

J. Phys.: Condens. Matter

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“…The current setup employed for the acquisition of TR-STXM images at the PolLux beamline of the SLS (Raabe et al, 2008), schematically shown in Fig. 1 and described in more detail in the work by Puzic et al (2010) and Finizio et al (2018), is based on a field-programmable gate array (FPGA) system, which consists of a 2 GSa s À1 ADC (where Sa means samples) combined with a discriminator for determining whether the APD has detected a photon, followed by a demultiplexer (DEMUX) that sorts the detected photons as counts in a given counter channel dependent on the bunch where the X-ray photon was generated. The APD signal is sampled with a rate of 500 MSa s À1 , with a sampling window of 30-50 ps, centered on the moment when the X-ray pulse illuminates the APD.…”

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confidence: 99%

“…In order to maintain the sampling window centered with respect to the X-ray bunches, the FPGA setup needs to be synchronized with the master clock of the synchrotron light source. This synchronization is performed by an event receiver FPGA setup (Micro-Research Finland VME-EVR-230RF), which generates the relevant timing signals used to synchronize the rest of the equipment (Puzic et al, 2010). By synchronizing both the DEMUX and the electronics which generate the excitation signal to the synchrotron master clock, it is possible to obtain a timeresolved image.…”

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confidence: 99%

Time-of-arrival detection for time-resolved scanning transmission X-ray microscopy imaging

Finizio¹,

Mayr²,

Raabe³

2020

J Synchrotron Rad

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A setup for time-resolved scanning transmission X-ray microscopy imaging is presented, which allows for an increase in the temporal resolution without the requirement of operating the synchrotron light source with low-α optics through the measurement of the time-of-arrival of the X-ray photons. Measurements of two filling patterns in hybrid mode of the Swiss Light Source are presented as a first proof-of-principle and benchmark for the performances of this new setup. From these measurements, a temporal resolution on the order of 20–30 ps could be determined.

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“…Such setups are typically based on fieldprogrammable gate arrays (FPGA) combined with fast analog to digital (ADC) converters. One of such setups, based on a Xilinx Virtex-II Pro FPGA [5], has been developed and installed at the PolLux (X07DA) STXM endstation of the Swiss Light Source [6], where time-resolved magnetic imaging with 500 ps temporal resolution has been demonstrated [5].…”

mentioning

confidence: 99%

“…Here, we present an upgraded setup developed for the sub-100 ps time-resolved STXM imaging of dynamical processes based on the setup described in Ref. [5]. In particular, in comparison to the setup described in Ref.…”

mentioning

confidence: 99%