Comparison of short pulse generation schemes for a soft x-ray free electron laser

Martin, Ian; Bartolini, R.

doi:10.1103/physrevstab.14.030702

Cited by 8 publications

(4 citation statements)

References 27 publications

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“…Ideally, we would perform the experiment to probe electrons scattering from the point of maximum acceleration and zero velocity, which sets the pulse duration of the FEL to less than a femtosecond. Recent developments in free electron laser operations have indeed shown that such short pulse duration in the x ray regime is possible 26 . At present, the temporal synchronization of optical and x ray pulses has been demonstrated at the few fs level 27 , but work to reduce it below to ~1 fs is underway 28 .…”

Section: Discussionmentioning

confidence: 99%

Testing quantum mechanics in non-Minkowski space-time with high power lasers and 4th generation light sources

Crowley

Bingham

Evans

et al. 2012

Sci Rep

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A common misperception of quantum gravity is that it requires accessing energies up to the Planck scale of 1019 GeV, which is unattainable from any conceivable particle collider. Thanks to the development of ultra-high intensity optical lasers, very large accelerations can be now the reached at their focal spot, thus mimicking, by virtue of the equivalence principle, a non Minkowski space-time. Here we derive a semiclassical extension of quantum mechanics that applies to different metrics, but under the assumption of weak gravity. We use our results to show that Thomson scattering of photons by uniformly accelerated electrons predicts an observable effect depending upon acceleration and local metric. In the laboratory frame, a broadening of the Thomson scattered x ray light from a fourth generation light source can be used to detect the modification of the metric associated to electrons accelerated in the field of a high power optical laser.

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Section: Discussionmentioning

confidence: 99%

Testing quantum mechanics in non-Minkowski space-time with high power lasers and 4th generation light sources

Crowley

Bingham

Evans

et al. 2012

Sci Rep

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“…To date, many methods have been proposed to generate attosecond-level FEL radiation (see e.g. [62][63][64][65]). Here, we will outline those that we found the most interesting, without claiming to provide a fully exhaustive review of the subject.…”

Section: Brief Overview Of Schemes To Obtain Attosecondlong Radiation...mentioning

confidence: 99%

Overview of options for generating high-brightness attosecond x-ray pulses at free-electron lasers and applications at the European XFEL

Serkez

Geloni

Tomin

et al. 2018

J. Opt.

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The generation of attosecond, highbrightness x-ray pulses is a matter of great interest given their applications in the study of ultra-fast processes. In recent years, the production of x-ray pulses of high brightness, both in the soft and in the hard x-ray range, has been enabled by x-ray free-electron lasers (XFELs). In contrast to conventional quantum lasers, XFELs are based on the use of an ultra-relativistic electron beam as gain medium. They often work in the self-amplified spontaneous emission (SASE) regime, which provides pulses of duration down to a few femtoseconds, composed of several longitudinal modes. In order to further decrease the duration of these pulses, special methods need to be implemented. In this paper we review available methods, with particular focus on the x-ray laser-enhanced attosecond pulse generation, which is one of the most promising techniques. We illustrate the method using the SASE3 soft x-ray undulator of the European XFEL facility as a case study, emphasizing the importance of high-repetition rate attosecond x-ray pulses. The expected attosecond-level radiation output is used for simulations of sequential ionization processes in atoms in the case of ionization in the soft x-ray regime, demonstrating the importance of this opportunity for the user community.

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“…One promising scheme for ultra-short pulse generation is the energy chirp plus tapered undulator scheme [13] and we have studied the implementation on CLARA in some detail [45] following earlier assessment for implementation on the UK's NLS proposal [46]. In this scheme, a few-cycle seed laser is used to modulate the electron beam energy to an amplitude greater than the natural bandwidth of the FEL.…”

Section: Slicing Schemesmentioning

confidence: 99%

CLARA conceptual design report

Clarke¹,

Angal-Kalinin²,

Bliss³

et al. 2014

J. Inst.

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This report describes the conceptual design of a proposed free electron laser test facility called CLARA that will be a major upgrade to the existing VELA accelerator test facility at Daresbury Laboratory in the UK. CLARA will be able to test a number of new free electron laser schemes that have been proposed but require a proof of principle experiment to confirm that they perform as predicted. The primary focus of CLARA will be on ultra short photon pulse generation which will take free electron lasers into a whole new regime, enabling a new area of photon science to emerge.

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Comparison of short pulse generation schemes for a soft x-ray free electron laser

Cited by 8 publications

References 27 publications

Testing quantum mechanics in non-Minkowski space-time with high power lasers and 4th generation light sources

Testing quantum mechanics in non-Minkowski space-time with high power lasers and 4th generation light sources

Overview of options for generating high-brightness attosecond x-ray pulses at free-electron lasers and applications at the European XFEL

CLARA conceptual design report

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