# Contributions to a conference proceedings

Latest additions:
 2020-10-2610:50 [PUBDB-2020-04017] Journal Article/Contribution to a conference proceedings et al Tunable and precise two-bunch generation at FLASHForward [DESY-20-039; arXiv:2005.12071] 4th European Advanced Accelerator Concepts Workshop 15-20 September 2019, EAAC2019, Isola d'ElbaIsola d'Elba, Italy, 15 Sep 2019 - 21 Sep 2019 Journal of physics / Conference Series 1596(1), 012002 (1-7) (2020) [10.1088/1742-6596/1596/1/012002]   Beam-driven plasma-wakefield acceleration based on external injection has the potential to significantly reduce the size of future accelerators. Stability and quality of the acceleration process substantially depends on the incoming bunch parameters. [...] OpenAccess: PDF PDF (PDFA); 2020-10-2013:00 [PUBDB-2020-03917] Journal Article/Contribution to a conference proceedings et al Hybridizing Multi-pass and Multi-plate Bulk Compression Europhoton 2020, PraguePrague, Czech Republic, 30 Aug 2020 - 4 Sep 2020   OpenAccess: PDF PDF (PDFA); 2020-10-2011:44 [PUBDB-2020-03916] Contribution to a conference proceedings et al Progress on the PITZ TDS 5th International Beam Instrumentation Conference, IBIC 2016, BarcelonaBarcelona, Spain, 11 Sep 2016 - 15 Sep 2016 JACoW, Geneva, Switzerland 1-4 (2016) [10.18429/JACoW-IBIC2016-WEPG47]   A transverse deflecting system (TDS) is under commissioning at the Photo Injector Test Facility at DESY, Zeuthen site (PITZ). The structure was designed and manufactured by the Institute for Nuclear Research (INR RAS, Moscow, Russia) as prototype for the TDS in the injector part of the European XFEL. [...] OpenAccess: PDF; 2020-10-2011:24 [PUBDB-2020-03915] Contribution to a conference proceedings et al Compact Ring-Based X-Ray Source With on-Orbit and on-Energy Laser-Plasma Injection North American Particle Accelerator Conference 2016, NAPAC16, ChicagoChicago, USA, 9 Oct 2016 - 14 Oct 2016 JACoW, Geneva, Switzerland 435-438 (2017) [10.18429/JACoW-NAPAC2016-TUA3CO03]   We report here the results of a one week long investigation into the conceptual design of an X-ray source based on a compact ring with on-orbit and on-energy laser-plasma accelerator (mini-project 10.4 from [1]). We performed these studies during the June 2016 USPAS class 'Physics of Accelerators, Lasers, and Plasma…' applying the art of inventiveness TRIZ. [...] OpenAccess: PDF PDF (PDFA); 2020-10-2010:04 [PUBDB-2020-03914] Contribution to a conference proceedings et al Latest News on High Average RF Power Operation at PITZ 28th International Linear Accelerator Conference, LINAC16, East LansingEast Lansing, USA, 25 Sep 2016 - 30 Sep 2016 JACoW, Geneva, Switzerland 3 pp. (2017) [10.18429/JACoW-LINAC2016-MOOP08]   The Photo Injector Test Facility at DESY in Zeuthen (PITZ) develops, tests and characterizes high brightness electron sources for FLASH and European XFEL. Since these FELs work with superconducting accelerators in pulsed mode, also the corresponding normal-conducting RF gun has to operate with long RF pulses. [...] OpenAccess: PDF PDF (PDFA); 2020-10-2009:50 [PUBDB-2020-03912] Contribution to a conference proceedings et al Investigations on Electron Beam Imperfections at PITZ 28th Linear Accelerator Conference, LINAC2016, East LansingEast Lansing, USA, 25 Sep 2016 - 30 Sep 2016 JACoW, Geneva, Switzerland 3 pp. (2017) [10.18429/JACoW-LINAC2016-MOPLR013]   Since more than a decade, the photo injector test facility at DESY, Zeuthen site (PITZ), has developed and optimized high brightness electron sources for modern Free Electros Lasers like FLASH and the European XFEL. Despite a very high performance of the photo injector was experimentally demonstrated, several discrepancies between measurements and beam dynamics simulations have been revealed. [...] OpenAccess: PDF PDF (PDFA); 2020-10-1519:10 [PUBDB-2020-03889] Journal Article/Contribution to a conference proceedings Cunliffe, S. T. Dark sector physics with Belle II European Physical Society Conference on High Energy Physics, EPS-HEP2019, GhentGhent, Belgium, 10 Jul 2019 - 17 Jul 2019   The Belle II detector has recently started data-taking at the SuperKEKB e$^+$e$^−$accelerator facility.The experiment is expected to collect around 50 times the dataset of Belle. Dark sector theories provide a particle explanation for dark matter without any direct coupling to Standard Model particles. [...] OpenAccess: PDF PDF (PDFA); External link: Fulltext 2020-10-1413:00 [PUBDB-2020-03825] Contribution to a conference proceedings/Contribution to a book et al Determining the glue component of the nucleon [20-009; arXiv:2001.07639] Proceedings of 37th International Symposium on Lattice Field Theory — PoS(LATTICE2019) - Sissa Medialab Trieste, Italy, 2020. - ISBN - doi:10.22323/1.363.022037th International Symposium on Lattice Field Theory, Lattice 2019, WuhanWuhan, China, 16 Jun 2019 - 22 Jun 2019 Sissa Medialab Trieste, Italy 1-6 (2020) [10.22323/1.363.0220]   Computing the gluon component of momentum in the nucleon is a difficult and computationally expensive problem, as the matrix element involves a quark-line-disconnected gluon operator which suffers from ultra-violet fluctuations. But also necessary for a successful determination is the non-perturbative renormalisation of this operator. [...] OpenAccess: PDF PDF (PDFA); 2020-10-1412:39 [PUBDB-2020-03823] Contribution to a conference proceedings/Contribution to a book Schierholz, G. Does confinement imply CP invariance of the strong interactions? [DESY-19-217; arXiv:1912.03941] Proceedings of 37th International Symposium on Lattice Field Theory — PoS(LATTICE2019) - Sissa Medialab Trieste, Italy, 2020. - ISBN - doi:10.22323/1.363.017237th International Symposium on Lattice Field Theory, Lattice 2019, WuhanWuhan, China, 16 Jun 2019 - 22 Jun 2019 Sissa Medialab Trieste, Italy 7 pp. (2020) [10.22323/1.363.0172]   The strong coupling constant $1/g^2$ and the vacuum angle $\theta$ of the SU(3) Yang-Mills theory are investigated in the infrared limit under the renormalization group flow. It is shown that the theory has an infrared attractive fixed point at $1/g^2 = \theta = \,0$, which leads to linear confinement and naturally solves the strong CP problem. [...] OpenAccess: PDF PDF (PDFA); 2020-10-0820:33 [PUBDB-2020-03759] Contribution to a conference proceedings Stefaniak, T. Novel signatures of additional Higgs bosons at the LHC [DESY-20-140; arXiv:2010.03471] The Eighth Annual Conference on Large Hadron Collider Physics, LHCP2020, online conferenceonline conference, international, 25 May 2020 - 30 May 2020 006 pp. (2020) [10.3204/PUBDB-2020-03759]   We identify two types of well-motivated, so-far experimentally unexplored LHC signatures of extended Higgs sectors: First, Higgs-to-Higgs decay signatures that involve (at least) two Beyond-the-Standard Model (BSM) neutral scalar bosons, $\phi_i \to \phi_j \phi_k$. These signatures are discussed in the framework of the Two-Real-Singlet-Model (TRSM), which can furthermore exhibit cascades of Higgs-to-Higgs decays leading to multi-Higgs final states. [...] OpenAccess: PDF PDF (PDFA);