A5034164774- Atomic and Molecular Physics
- Dark Matter and Cosmic Phenomena
- Atomic and Subatomic Physics Research
- Particle physics theoretical and experimental studies
- Cold Atom Physics and Bose-Einstein Condensates
- Muon and positron interactions and applications
- Particle accelerators and beam dynamics
- Particle Detector Development and Performance
- Neutrino Physics Research
- Radiation Detection and Scintillator Technologies
- Health and Medical Research Impacts
- Noncommutative and Quantum Gravity Theories
- Advanced NMR Techniques and Applications
- Environmental Monitoring and Data Management
- CCD and CMOS Imaging Sensors
- Spacecraft and Cryogenic Technologies
- Nuclear Physics and Applications
- Biomedical and Engineering Education
- Animal testing and alternatives
- Quantum, superfluid, helium dynamics
- Astrophysics and Cosmic Phenomena
- Inorganic Fluorides and Related Compounds
- Advanced Sensor Technologies Research
- Advanced Frequency and Time Standards
Austrian Academy of Sciences
2013-2021
Stefan Meyer Institute for Subatomic Physics
2014-2021
TU Wien
2012
Antihydrogen, a positron bound to an antiproton, is the simplest antiatom. Its counterpart—hydrogen—is one of most precisely investigated and best understood systems in physics research. High-resolution comparisons both provide sensitive tests CPT symmetry, which fundamental symmetry Standard Model elementary particle physics. Any measured difference would point violation thus new Here we report development antihydrogen source using cusp trap for in-flight spectroscopy. A total 80 atoms are...
Abstract Antihydrogen, the lightest atom consisting purely of antimatter, is an ideal laboratory to study CPT symmetry by comparison with hydrogen. With respect absolute precision, transitions within ground-state hyperfine structure (GS-HFS) are most appealing virtue their small energy separation. ASACUSA proposed employing a beam cold antihydrogen atoms in Rabi-type experiment, determine GS-HFS field-free region. Here we present measurement zero-field hydrogen using spectroscopy apparatus...
The ASACUSA collaboration at the Antiproton Decelerator of CERN aims a precise measurement antihydrogen ground-state hyperfine structure as test fundamental CPT symmetry. A beam atoms is formed in CUSP trap, undergoes Rabi-type spectroscopy and detected downstream dedicated detector. In parallel measurements using polarized hydrogen are being performed to commission apparatus perform parameters Standard Model Extension (SME). current status reviewed progress presented.
The PERC collaboration will perform high-precision measurements of angular correlations in neutron beta decay at the beam facility MEPHISTO Forschungs-Neutronenquelle Heinz Maier-Leibnitz Munich, Germany. new station PERC, a clean, bright, and versatile source products, is designed to improve sensitivity studies by one order magnitude. charged products are collected strong longitudinal magnetic field directly from inside guide. This combination provides highest phase space density products....
Abstract The ASACUSA (Atomic Spectroscopy And Collisions Using Slow Antiprotons) collaboration plans to measure the ground-state hyperfine splitting of antihydrogen in a beam at CERN Antiproton Decelerator with initial relative precision $$10^{-6}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msup><mml:mn>10</mml:mn><mml:mrow><mml:mo>-</mml:mo><mml:mn>6</mml:mn></mml:mrow></mml:msup></mml:math> or better, test fundamental CPT (combination charge conjugation, parity...
The ASACUSA antihydrogen setup at the CERN Antiproton Decelerator (AD) consists of an source (cusp magnet coupled to a positron and antiproton catching magnet) followed by spectrometer beamline. After production in cusp, atoms decay while they escape trap leading changes their effective magnetic moment which turn affect trajectories Those sequential decays presence varying field strength from point cusp detection end line can principle greatly prospects for precision measurement hyperfine...
The matter-antimatter asymmetry observed in the universe today still lacks a quantitative explanation. One possible mechanism that could contribute to imbalance is violation of combined Charge-, Parity- and Time symmetries (CPT). A test CPT symmetry using anti-atoms being carried out by ASACUSA-CUSP collaboration at CERN Antiproton Decelerator low temperature beam antihydrogen—the most simple atomic system built only antiparticles. While hydrogen abundant element universe, antihydrogen...
The ASACUSA Collaboration at CERNs Antiproton Decelerator aims to measure the ground state hyperfine splitting of antihydrogen with high precision test fundamental symmetry CPT (combination charge conjugation, parity transformation, and time reversal). For this purpose an detector has been developed. Its task is count arriving atoms therefore distinguish backgroundevents (mainly cosmics) from antiproton annihilations originating which are produced only in small amounts. A central BGO crystal...
The antihydrogen programme of the ASACUSA collaboration at antiproton decelerator CERN focuses on Rabi-type measurements ground-state hyperfine splitting for a test combined Charge-Parity-Time symmetry. spectroscopy apparatus consists microwave cavity to drive transitions and superconducting sextupole magnet quantum state analysis via Stern-Gerlach separation. However, small production rates forestall comprehensive performance studies apparatus. For this purpose hydrogen source detector have...
While high channel density can be easily achieved for big experiments using custom made microchips, providing something similar small and medium size imposes a challenge. Within this work we describe novel cost effective solution to operate silicon photodetectors such as photo multipliers (SiPM). The IFES modules provide the bias voltage detectors, leading edge discriminator featuring time over threshold differential amplifier, all on one printed circuit board. We demonstrate under realistic...
We have been developing ground-state antihydrogen atomic beams to test CPT symmetry via in-flight hyperfine spectroscopy. A new beam detector has developed. The overview of the experiment, detail and latest results will be presented.
An antihydrogen detector consisting of a thin BGO disk and surrounding plastic scintillator hodoscope has been developed. We have characterized the two-dimensional positions sensitivity energy deposition into was calibrated using cosmic rays by comparing experimental data with Monte-Carlo simulations. The particle tracks were defined connecting hit hits on bars. event rate investigated as function angles between in for simulated antiproton events, measured ray events. Identification Monte...