# FS-FLASH

 2018-11-2816:43 [PUBDB-2018-04938] Poster et al Possible Upgrades of FLASH - A View from the Accelerator-Perspective 9th International Particle Accelerator Conference, IPAC'18, Vancouver, BCVancouver, BC, Canada, 29 Apr 2018 - 4 May 2018   Recently FLASH (Free electron LASer in Hamburg) at DESY has been granted funding for a refurbishment project covering among others the replacement of two old SRF modules, an upgrade of the injector lasers and an upgrade of parts of the electron beam diagnostics.In addition we are proposing several possible upgrades and new features for the injector and the drive linac as well as in the undulator beamlines.Here we present options which are in our opinion technically feasible and at the same time operationally manageable.. OpenAccess: PDF PDF (PDFA); 2018-11-2816:38 [PUBDB-2018-04937] Contribution to a conference proceedings et al Possible Upgrades of FLASH - A View from the Accelerator-Perspective 9th International Particle Accelerator Conference, IPAC'18, Vancouver, BCVancouver, BC, Canada, 29 Apr 2018 - 4 May 2018 Geneva, Switzerland : JACoW 4 pp. (2018) [10.3204/PUBDB-2018-04937]   Recently FLASH (Free electron LASer in Hamburg) at DESY has been granted funding for a refurbishment project covering among others the replacement of two old SRF modules, an upgrade of the injector lasers and an upgrade of parts of the electron beam diagnostics.In addition we are proposing several possible upgrades and new features for the injector and the drive linac as well as in the undulator beamlines.Here we present options which are in our opinion technically feasible and at the same time operationally manageable.. OpenAccess: PDF PDF (PDFA); External link: Fulltext 2018-11-1511:09 [PUBDB-2018-04519] Journal Article et al Non-Linear Soft X-Ray Methods on Solids with MUSIX - the Multi-Dimensional Spectroscopy and Inelastic X-Ray Scattering Enstation Journal of physics / Condensed matter 31(1), 014003 (2019) [10.1088/1361-648X/aaedf3]   With the intense and coherent x-ray pulses available from free-electron lasers, the possibility to transfer non-linear spectroscopic methods from the laser lab to the x-ray world arises. Advantages especially regarding selectivity and thus information content as well as an improvement of signal levels are expected [...] OpenAccess: PDF PDF (PDFA); 2018-11-1316:52 [PUBDB-2018-04481] Journal Article et al Damage accumulation in thin ruthenium films induced by repetitive exposure to femtosecond XUV pulses below the single-shot ablation threshold Journal of the Optical Society of America / B 35(11), 2799 - 2805 (2018) [10.1364/JOSAB.35.002799]   The process of damage accumulation in thin ruthenium films exposed to multiple femtosecond extreme ultraviolet (XUV) free-electron laser (FEL) pulses below the critical angle of reflectance at the FEL facility in Hamburg (FLASH) was experimentally analyzed. The multi-shot damage threshold is found to be lower than the single-shot damage threshold [...] Restricted: PDF PDF (PDFA); 2018-11-0115:53 [PUBDB-2018-04105] Journal Article et al Time-resolved electron spectroscopy for chemical analysis of photodissociation: Photoelectron spectra of Fe(CO)$_5$ , Fe(CO)$_4$ , and Fe(CO)$_3$ The journal of chemical physics 149(4), 044307 (2018) [10.1063/1.5035149]   The prototypical photoinduced dissociation of Fe(CO)$_5$ in the gas phase is used to test time-resolved x-ray photoelectron spectroscopy for studying photochemical reactions. Upon one-photon excitation at 266 nm, Fe(CO)$_5$ successively dissociates to Fe(CO)$_4$ and Fe(CO)$_3$ along a pathway where both fragments retain the singlet multiplicity of Fe(CO)$_5$. [...] Published on 2018-07-27. Available in OpenAccess from 2019-07-27.: PDF PDF (PDFA); 2018-11-0115:05 [PUBDB-2018-04100] Book/Report/Internal Report et al Regenerative FEL amplifier at the DESY TESLA test facility as a fully coherent VUV laser [TESLA-FEL 1997-07] TESLA-FEL Reports 23 pp. (1997) [10.3204/PUBDB-2018-04100]   OpenAccess: PDF PDF (PDFA); 2018-11-0114:46 [PUBDB-2018-04098] Book/Report/Internal Report et al Beam based alignment procedure for an undulator with superimposed FODO lattice6 [TESLA-FEL 1997-05] TESLA-FEL Reports 15 pp. (1997) [10.3204/PUBDB-2018-04098]   OpenAccess: PDF PDF (PDFA); 2018-11-0111:29 [PUBDB-2018-04090] Book/Report/Internal Report Faatz, B. Possible wavelength range extension of the TESLA Test Facility free electron laser [TESLA-FEL 1998-04] TESLA-FEL Reports 12 pp. (1998) [10.3204/PUBDB-2018-04090]   OpenAccess: PDF PDF (PDFA); 2018-11-0111:19 [PUBDB-2018-04087] Book/Report/Internal Report Faatz, B. Optimum beta function for phase I of the TESLA test facility FEL at DESY [TESLA-FEL 1998-01] TESLA-FEL Reports 8 pp. (1998) [10.3204/PUBDB-2018-04087]   OpenAccess: PDF PDF (PDFA); 2018-10-3016:13 [PUBDB-2018-04075] Book/Report/Internal Report Pfluger, J. Magnet sorting for the TTF-FEL undulator using simulated annealing [TESLA-FEL 99-01] TESLA-FEL Reports 8 pp. (1999) [10.3204/PUBDB-2018-04075]   In order to get the field quality required for the undulator of the TESLA Test Facility Free Electron Laser (TTF-FEL), two steps have been foreseen. The first step is to sort the magnets in such a way that the resulting field quality is as good as possible with the magnets at hand. [...] OpenAccess: PDF PDF (PDFA);