19-20 August 2020
Online
Europe/Berlin timezone
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Contribution List

Displaying 12 contributions out of 12
Session: Session 1.1
The presentation will provide a brief introduction the x-ray standing wave method. Laying in between spectroscopy and diffraction, the technique is used to study the atomic structure of materials in the direct way. In the second part, the extension of the method for magnetic structures will be presented.
on 19 Aug 2020 at 9:55 AM
Session: Session 3.2
We propose a novel scenario for the detection of radio signals from the decay of axions and axion-like particles, termed *axion gegenschein*. Ambient radiation arriving from astrophysical radio-bright objects stimulate the decay of halo dark matter in Milky Way creating a *countersource* emitting photons at frequencies half the axion mass and exhibiting the spatial dimensions and features of each ... More
Presented by Oindrila GHOSH on 20 Aug 2020 at 10:30 AM
Session: Session 3.1
Emerging high power THz sources show great promise for electron acceleration and manipulation within mm-scale waveguides. For efficient and phase synchronous interaction a thorough characterization of these waveguides is required for which a technique has been developed and tested.
Presented by Max KELLERMEIER on 20 Aug 2020 at 9:55 AM
Session: Session 3.2
on 20 Aug 2020 at 10:55 AM
Session: Session 1.2
The positron source of the International Linear Collider (ILC) is based on a superconducting helical undulator passed by the high-energy electron beam to generate photons which hit a conversion target. Since the photons are circularly polarized the resulting positron beam is longitudinally polarized. At a center-of-mass energy of 250 GeV (ILC-250), the undulator with 231 m magnet length is needed ... More
Presented by Mr. Khaled ALHARBI on 19 Aug 2020 at 10:55 AM
Session: Session 3.1
on 20 Aug 2020 at 9:30 AM
Session: Session 1.1
IceCube is a cubic kilometer ice Cherenkov detector located at the South Pole that can be used to test models describing the production and decay of particles not included in the standard model. This talk introduces a novel analysis searching for heavy neutral lepton signals using DeepCore, a dense sub-array of IceCube capable of detecting particle interactions at energies as low as 10GeV.
Session: Session 1.1
IceCube is a cubic kilometer ice Cherenkov detector located at the South Pole that can be used to test models describing the production and decay of particles not included in the standard model. This talk introduces a novel analysis searching for heavy neutral lepton signals using DeepCore, a dense sub-array of IceCube capable of detecting particle interactions at energies as low as 10GeV.
Presented by Mr. Leander FISCHER on 19 Aug 2020 at 9:30 AM
Session: Session 2.1
Primordial black holes (PBHs) are viable candidates for dark matter. The microlensing of stars is a powerful method to constrain their abundance. Imaging Air Cherenkov Telescopes (IACTs), which are designed for gamma-ray astronomy, also provide outstanding optical capabilities with sampling speeds of $\ll 1\,$s. This work investigates, whether IACTs can access the unexplored PBH mass window of $10 ... More
Presented by Konstantin PFRANG on 19 Aug 2020 at 2:00 PM
Session: Session 2.1
Mineral specimens recovered from meteorites or impact sites on Earth typically exhibit shock metamorphic effects, providing insights into past impact events within the solar system. Simulating impacts by diamond anvil cells in slow motion, we perform compression experiments on quartz to better understand the formation of natural impact effects.
Presented by Mr. Christoph OTZEN on 19 Aug 2020 at 2:25 PM
Session: Session 2.2
The High Energy Stereoscopic System (H.E.S.S.) is a gamma-ray experiment composed by five Cherenkov telescopes located in Namibia. Numerous gamma-ray sources have been detected since then, yet few morphology studies had been conducted until recently due to a limited hardware and software. New analysis methods and hardware upgrades allowed the H.E.S.S. collaboration to investigate further details i ... More
Presented by Mr. Victor BARBOSA MARTINS on 19 Aug 2020 at 3:00 PM
Session: Session 1.2
The recent, unprecedented detection of gamma-ray burst afterglows at very high energies (VHE) opens a new window on the radiative processes at work. I will discuss the limitations of its interpretation as synchrotron-self Compton (SSC) radiation being a natural extension of the standard fireball model.
Presented by Mr. Marc KLINGER on 19 Aug 2020 at 10:30 AM