# MFL

 2017-05-3111:16 [PUBDB-2017-04049] Report/Journal Article et al Confining continuous manipulations of accelerator beam-line optics [DESY-16-071; arXiv:1604.06658]   Altering the optics in one section of a linear accelerator beamline will in general cause an alteration of the optics in all downstream sections. In circular accelerators, changing the optical properties of any beamline element will have an impact on the optical functions throughout the whole machine. [...] OpenAccess: PDF PDF (PDFA); 2017-02-2210:40 [PUBDB-2017-01078] Journal Article et al First Operation of a Harmonic Lasing Self-Seeded Free Electron Laser   Harmonic lasing is a possible mode of operation of X-ray FEL user facilities that allows us to provide brilliant beams of higher energy photons for user experiments. Another useful application of harmonic lasing is the so-called harmonic lasing self-seeded free electron laser (HLSS FEL) that allows the improvement of spectral brightness of these facilities. [...] OpenAccess: PDF; Restricted: PDF; External link: Fulltext 2017-01-1008:31 [PUBDB-2017-00381] Conference Presentation Schulz, T. A Laser Pulse Controller for the Injector Laser at FLASH and European XFEL 28th Linear Accelerator Conference, LINAC2016, Meeting locationEast Lansing, USA, 25 Sep 2016 - 30 Sep 2016   FLASH is a multi-beamline free-electron laser user facility which provides femtosecond long high brilliant photon pulses in the extreme-UV and soft-X ray wavelength range. One pulsed superconducting LINAC accelerates electron bunches for three undulator beamlines. [...] OpenAccess: PDF; 2017-01-0903:11 [PUBDB-2017-00263] Poster et al The Superconducting Soft X-Ray Free-Electron Laser User Facility FLASH 7th International Particle Accelerator Conference, IPAC16, Meeting locationBusan, Korea, 8 May 2016 - 13 May 2016   OpenAccess: PDF; 2017-01-0903:11 [PUBDB-2017-00262] Contribution to a conference proceedings et al The Superconducting Soft X-ray Free-Electron Laser User Facility FLASH 7th International Particle Accelerator Conference, IPAC16, Meeting locationBusan, Korea, 8 May 2016 - 13 May 2016 729-731 (2016) [10.3204/PUBDB-2017-00262]   FLASH, the superconducting free-electron laser at DESY delivers up to several thousand photon pulses per second with wavelengths ranging from 52 nm down to 4.2 nm and with pulse energies of up to 500 FLASH, the superconducting free-electron laser at DESY delivers up to several thousand photon pulses per second with wavelengths ranging from 52 nm down to 4.2 nm and with pulse energies of up to 500 $\mu$J to photon users at the FLASH1 beamline. In 2014 and 2015 a second beamline, FLASH2, has been commissioned in parallel to user operation at FLASH1. [...] OpenAccess: PDF; External link: Fulltext 2016-12-2112:01 [PUBDB-2016-06533] Preprint/Report et al First Operation of a Harmonic Lasing Self-Seeded Free Electron Laser [DESY-16-243; arXiv:1612.03635]   Harmonic lasing is a perspective mode of operation of X-ray FEL user facilities that allows to provide brilliant beams of higher energy photons for user experiments. Another useful application of harmonic lasing is so called Harmonic Lasing Self-Seeded Free Electron Laser (HLSS FEL) that allows to improve spectral brightness of these facilities. [...] OpenAccess: PDF PDF (PDFA); 2016-12-1516:04 [PUBDB-2016-06263] Contribution to a conference proceedings/Contribution to a book et al Measurements of Ultrasmall Charges with MCP Detector in FLASH Accelerator 7th International Particle Accelerator Conference, IPAC16, Meeting locationBusan, Korea, 8 May 2016 - 13 May 2016 741-743 (2016) [10.3204/PUBDB-2016-06263]   Structure of the dark current passed through the undulator is a matter of great concern. Two effects can contribute to the dark current: emission of electrons from "hot" spots in the gun, and generation of "ghost" bunches due to possible leakage of the photoinjector laser. [...] OpenAccess: PDF PDF (PDFA); 2016-12-0211:59 [PUBDB-2016-05853] Contribution to a conference proceedings et al Fast Intra Bunch Train Charge Feedback for FELs based on Photo Injector Laser Pulse Modulation 20th IEEE-NPSS Real Time Conference, RT2016, Meeting locationPadua, Italy, 5 Jun 2016 - 10 Jun 2016 1-2 (2016) [10.3204/PUBDB-2016-05853]   Bunch charge variations in Free Electron Lasers such as the Free Electron Lasers at Hamburg (FLASH) or the European X-Ray Free Electron Laser (E-XFEL) impacts the longitudinal phase space distribution of the electrons resulting in different bunch peak currents, pulse duration and pulse shapes. The electron bunches are generated by short ultraviolet laser pulses impinging onto a photocathode inside a radio frequency (RF) accelerating cavity. [...] OpenAccess: CRX_PS1_187 - PDF PDF (PDFA); Poster_CRX_PS1_187 - PDF PDF (PDFA); External link: Fulltext 2016-11-2315:51 [PUBDB-2016-05557] Master Thesis Schmidt, B. Compensation of Steerer Crosstalk between FLASH1 and FLASH2 1-96 (2015) = University of Hamburg, Masterarbeit, 2016 The free-electron laser in Hamburg (FLASH) is a user facility, delivering soft X-ray radiation for photon science since 2005. Starting from 2014, a second beam line for user operation, FLASH2, has been commissioned. [...] OpenAccess: PDF; 2016-11-1712:14 [PUBDB-2016-05329] Poster Schmidt, B. Compensation of Steerer Crosstalk Between FLASH1 and FLASH2 7th International Particle Accelerator Conference, IPAC16, Meeting locationBusan, Korea, 8 May 2016 - 13 May 2016   OpenAccess: PDF PDF (PDFA);