A. Lindner
A5019373793- Dark Matter and Cosmic Phenomena
- Astrophysics and Cosmic Phenomena
- Particle Detector Development and Performance
- Atomic and Subatomic Physics Research
- Particle physics theoretical and experimental studies
- Cosmology and Gravitation Theories
- Particle Accelerators and Free-Electron Lasers
- Neutrino Physics Research
- Superconducting and THz Device Technology
- Radiation Detection and Scintillator Technologies
- Gamma-ray bursts and supernovae
- CCD and CMOS Imaging Sensors
- Radio Astronomy Observations and Technology
- Solar and Space Plasma Dynamics
- Electrostatic Discharge in Electronics
- Quantum Electrodynamics and Casimir Effect
- Pulsars and Gravitational Waves Research
- Integrated Circuits and Semiconductor Failure Analysis
- Atmospheric Ozone and Climate
- Particle accelerators and beam dynamics
- Photocathodes and Microchannel Plates
- Superconducting Materials and Applications
- Electronic Packaging and Soldering Technologies
- Radiation Therapy and Dosimetry
- Scientific Research and Discoveries
Deutsches Elektronen-Synchrotron DESY
2015-2024
Software (Spain)
2023
Johannes Gutenberg University Mainz
2022
Karlsruhe Institute of Technology
2020
KTH Royal Institute of Technology
2019
Stockholm University
2019
Barry University
2019
Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara
2019
University of Copenhagen
2019
Heidelberg University
2005
Four decades after its prediction, the axion remains most compelling solution to Strong-CP problem and a well-motivated dark matter candidate, inspiring host of elegant ultrasensitive experiments based on axion-photon mixing. This report reviews experimental situation several fronts. The microwave cavity experiment is making excellent progress in search for axions microelectronvolt range may be plausibly extended up 100 mu eV. Within past years however, it has been realized that are...
The International Axion Observatory (IAXO) will be a forth generation axion helioscope. As its primary physics goal, IAXO look for axions or axion-like particles (ALPs) originating in the Sun via Primakoff conversion of solar plasma photons. In terms signal-to-noise ratio, about 4–5 orders magnitude more sensitive than CAST, currently most powerful helioscope, reaching sensitivity to axion-photon couplings down few × 10−12 GeV−1 and thus probing large fraction unexplored ALP parameter space....
Abstract The Physics Beyond Colliders initiative is an exploratory study aimed at exploiting the full scientific potential of CERN’s accelerator complex and infrastructures through projects complementary to LHC other possible future colliders. These will target fundamental physics questions in modern particle physics. This document presents status proposals presented framework Standard Model working group, explore their reach impact that CERN could have next 10–20 years on international landscape.
of the Technical Design Report for second stage "Any Light Particle Search" (ALPS-II) at DESY as submitted to PRC in August 2012 and reviewed November 2012.ALPS-II is a "Light Shining through Wall" experiment which searches photon oscillations into weakly interacting sub-eV particles.These are often predicted by extensions Standard Model motivated astrophysical phenomena.The first phases ALPS-II project were approved management on February 21st, 2013.
Dark sectors, consisting of new, light, weakly-coupled particles that do not interact with the known strong, weak, or electromagnetic forces, are a particularly compelling possibility for new physics. Nature may contain numerous dark each their own beautiful structure, distinct particles, and forces. This review summarizes physics motivation sectors exciting opportunities experimental exploration. It is summary Intensity Frontier subgroup "New, Light, Weakly-coupled Particles" Community...
The cold dark matter of the Universe may be comprised very light and weakly interacting particles, so-called WISPs. Two prominent examples are hidden photons axion-like particles. In this note we propose a new technique to sensitively search for type with dish antennas. is broadband allows explore whole range masses in single measurement.
We review the physics potential of a next generation search for solar axions: International Axion Observatory (IAXO) . Endowed with sensitivity to discover axion-like particles (ALPs) coupling photons as small gaγ∼ 10−12 GeV−1, or electrons gae∼10−13, IAXO has find QCD axion in 1 meV∼1 eV mass range where it solves strong CP problem, can account cold dark matter Universe and be responsible anomalous cooling observed number stellar systems. At same time, will have enough detect lower axions...
A bstract This article describes BabyIAXO, an intermediate experimental stage of the International Axion Observatory (IAXO), proposed to be sited at DESY. IAXO is a large-scale axion helioscope that will look for axions and axion-like particles (ALPs), produced in Sun, with unprecedented sensitivity. BabyIAXO conceived test all subsystems (magnet, optics detectors) relevant scale final system thus serve as prototype IAXO, but same time fully-fledged physics reach itself, potential discovery....
Abstract A finite axion–nucleon coupling, nearly unavoidable for QCD axions, leads to the production of axions via thermal excitation and subsequent de-excitation $$^{57}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msup> <mml:mrow /> <mml:mn>57</mml:mn> </mml:msup> </mml:math> Fe isotopes in sun. We revise solar bound on this flux adopting up date emission rate, investigate sensitivity proposed International Axion Observatory IAXO its intermediate stage BabyIAXO detect...
The Crab Nebula has been observed by the HEGRA (High-Energy Gamma-Ray Astronomy) stereoscopic system of imaging air Cerenkov telescopes (IACTs) for a total ~200 hr during two observational campaigns: from 1997 September to 1998 March and August 1999 April. recent detailed studies performance give an energy threshold resolution γ-rays 500 GeV ~18%, respectively. spectrum was measured with IACT in very broad range up 20 TeV, using observations at zenith angles 65°. data can be fitted 1 TeV...
Standard Model extensions often predict low‐mass and very weakly interacting particles, such as the axion. A number of small‐scale experiments at intensity/precision frontier are actively searching for these elusive complementing searches physics beyond colliders. Whilst a next generation will give access to huge unexplored parameter space, discovery would have tremendous impact on our understanding fundamental physics.
The axion emerges in extensions of the Standard Model that explain absence CP violation strong interactions. Simultaneously, it can provide naturally cold dark matter our universe. Several searches for axions and axion-like particles (ALPs) have constrained corresponding parameter space over last decades but no unambiguous hints their existence been found. mass range below 1 meV remains highly attractive a well motivated region axions. In this White Paper we present description new...
We present results from the FUNK experiment in search for hidden-photon dark matter. Near surface of a mirror, hidden photons may be converted into ordinary photons. These are emitted perpendicular to and have an energy equal mass matter photon. Our experimental setup consists large, spherical mirror with area more than 14 m$^2$, which concentrates its central point. Using detector sensitive visible near-UV photons, we can exclude kinetic-mixing coupling stronger $\chi \approx 10^{-12}$...
Particle physics today faces the challenge of explaining mystery dark matter, origin matter over anti-matter in Universe, neutrino masses, apparent fine-tuning electro-weak scale, and many other aspects fundamental physics. Perhaps most striking frontier to emerge search for answers involves new at mass scales comparable familiar below GeV-scale, or even radically below, down sub-eV scales, with very feeble interaction strength. New theoretical ideas address questions predict such feebly...
We point out that chameleon field theories might reveal themselves as an afterglow effect in axionlike particle search experiments due to chameleon-photon conversion a magnetic field. estimate the parameter space which is accessible by currently available technology and find could constrain this way complementary gravitational Casimir force experiments. In addition, one reach photon-chameleon couplings are beyond sensitivity of common laser polarization also sketch idea Fabry-P\'erot cavity...
In this work, we consider searches for dark matter made of axions or axionlike particles using resonant radio frequency cavities inserted into dipole magnets from particle accelerators, wiggler developed accelerator based advanced light sources, and toroidal similar to those used in particle-physics detectors. We investigate the expected sensitivity such axionlike-particle dark-matter detectors discuss engineering aspects building tuning them. Brief mention is also even stronger field which...