Conference Presentations

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2020-12-02
15:03
[PUBDB-2020-04706] Conference Presentation (Invited)

Strong-field-ionization and rescatteringin the molecular frame
Cost Meeting Attosecond Chemistry, ATTO CHEM, online onlyCluj-Napoca (online), online only, Romania, 9 Sep 2020 - 11 Sep 20202020-09-092020-09-11
Strong-field-ionization and rescatteringin the molecular frameJochen Küpper1Center for Free-Electron Laser Science, Deutsches Elektronen-Synchrotron DESY, Notkestraße 85,22607 Hamburg, GermanyDepartment of Physics, Universität Hamburg, Luruper Chaussee 149, 22761 Hamburg, GermanyDepartment of Chemistry, Universität Hamburg, Martin-Luther-King-Platz 6, 20146 Hamburg, GermanyCenter for Ultrafast Imaging, Universität Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germanyjochen.kuepper@cfel.deThe interaction of strong laser fields with matter intrinsically provides powerful tools to imagetransient dynamics with an extremely high spatiotemporal resolution. We studied the strong-fieldionization of laser-aligned OCS molecules [1] and show a full real-time picture of the photoelectrondynamics in the combined action of the laser field and the molecular interaction [2]. [...]
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2020-12-02
12:40
[PUBDB-2020-04701] Conference Presentation

EFT of axions and gauge bosons (in the light of UV models)
DESY Virtual Theory Forum 2020, HamburgHamburg, Germany, 22 Sep 2020 - 25 Sep 20202020-09-222020-09-25
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2020-12-01
09:47
[PUBDB-2020-04677] Conference Presentation (Plenary/Keynote)

Subleading colour corrections in parton showers
Taming the accuracy of event generators, GenevaGeneva, Switzerland, 29 Jun 2020 - 3 Jul 20202020-06-292020-07-03
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2020-11-23
16:53
[PUBDB-2020-04563] Conference Presentation

Beam Dynamics Simulations for PITZ Bunch Compressor
Virtual MT ARD ST3 Meeting in Karlsruhe, DESYKarlsruhe, DESY, Germany, 23 Sep 2020 - 24 Sep 20202020-09-232020-09-24
A magnetic bunch compressor is a part of an accelerator-based THz source prototype for pump-probe experiments at the European XFEL at the Photo Injector Test Facility at DESY in Zeuthen (PITZ). We study the performance of the bunch compressor by beam dynamics simulations. [...]
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2020-11-23
16:42
[PUBDB-2020-04562] Conference Presentation
et al
Cathode Response Time Measurements in a High Gradient Photo Injector
Virtual MT ARD ST3 Meeting in Karlsruhe, DESYKarlsruhe, DESY, Germany, 23 Sep 2020 - 24 Sep 20202020-09-232020-09-24
Photoinjectors are the primary choice for high-brightness electron beam sources today. A key element of these is the photocathode. [...]
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2020-11-23
16:37
[PUBDB-2020-04561] Conference Presentation
et al
Emittance Reduction of RF Photoinjector Generated Electron Beams by Transverse Laser Beam Shaping
Virtual MT ARD ST3 Meeting in Karlsruhe, KarlsruheKarlsruhe, Germany, 24 Sep 2020 - 24 Sep 20202020-09-242020-09-24
Linac based X-ray free electron laser demand a high beam quality from the electron source, therefore RF photoinjectors are used to generate the electron bunches for state of the art beam brightness. One important figure of merit for these injectors is the transverse emittance of the generated electron beam, which can be minimized by shaping the photocathode laser pulses. [...]
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2020-11-23
16:25
[PUBDB-2020-04560] Conference Presentation
et al
LCLS-I Undulator Horizontal Gradient Modeling for THz@PITZ
Virtual MT ARD ST3 Meeting in Karlsruhe, DESYKarlsruhe, DESY, Germany, 23 Sep 2020 - 24 Sep 20202020-09-232020-09-24
The Photo Injector Test Facility at DESY in Zeuthen (PITZ) develops a prototype of an accelerator based THz source for pump-probe experiments at the European XFEL. For the proof-of-principle experiments an LCLS-I undulator will be installed in a second PITZ tunnel downstream of the accelerator. [...]
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2020-11-23
15:06
[PUBDB-2020-04559] Conference Presentation

Status and Future Plans of PITZ
Virtual MT ARD ST3 Meeting 2020 in Karlsruhe, KarlsruheKarlsruhe, Germany, 23 Sep 2020 - 24 Sep 20202020-09-232020-09-24
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2020-11-18
12:57
[PUBDB-2020-04516] Conference Presentation
et al
HERAPDF2.0 and Diffractive PDFs
40th International Conference on High Energy Physics, ICHEP2020, ONLINEONLINE, Virtual World, 28 Jul 2020 - 6 Aug 20202020-07-282020-08-06
NNLO predictions for jet production in Deep Inelastic Scattering have recently become available. These are used to extend the QCD HERAPDF2.0Jets fits, that were made to extract PDFs from inclusive HERA data and HERA jet data, from NLO to NNLO. [...]
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2020-11-18
12:51
[PUBDB-2020-04514] Conference Presentation

Dedicated data analyses for improving PDFs: Study of proton parton distribution functions at high x and charm production in charged DIS at HERA
40th International Conference on High Energy Physics, ICHEP2020, DESYONLINE, DESY, Virtual World, 28 Jul 2020 - 6 Aug 20202020-07-282020-08-06
Proton parton distribution functions (PDFs) are poorly constrained by existing data for Bjorken x larger than 0.6, and the PDFs extracted from global fits differ considerably from each other. A technique for comparing predictions based on different PDF sets to observed event numbers is presented. [...]
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