7 research outputs found
Determination of luminosity for in-ring reactions:A new approach for the low-energy domain
Luminosity is a measure of the colliding frequency between beam and target
and it is a crucial parameter for the measurement of absolute values, such as
reaction cross sections. In this paper, we make use of experimental data from
the ESR storage ring to demonstrate that the luminosity can be precisely
determined by modelling the measured Rutherford scattering distribution. The
obtained results are in good agreement with an independent measurement based on
the x-ray normalization method. Our new method provides an alternative way to
precisely measure the luminosity in low-energy stored-beam configurations. This
can be of great value in particular in dedicated low-energy storage rings where
established methods are difficult or impossible to apply.Comment: 8 pages, 5 figure
Evaluation of Antioxidant, Antibacterial, and Antifungal Properties of Satureja hortensis Essential Oil
Essential oil and its systematic significance in species of Micromeria Bentham from Serbia & Montenegro
Chemical composition and bioactivity of essential oil from Thymus species in Balkan Peninsula
Recoil imaging for dark matter, neutrinos, and physics beyond the Standard Model
Recoil imaging entails the detection of spatially resolved ionization tracks generated by particle interactions. This is a highly sought-after capability in many classes of detector, with broad applications across particle and astroparticle physics. However, at low energies, where ionization signatures are small in size, recoil imaging only seems to be a practical goal for micro-pattern gas detectors. This white paper outlines the physics case for recoil imaging, and puts forward a decadal plan to advance towards the directional detection of low-energy recoils with sensitivity and resolution close to fundamental performance limits. The science case covered includes: the discovery of dark matter into the neutrino fog, directional detection of sub-MeV solar neutrinos, the precision study of coherent-elastic neutrino-nucleus scattering, the detection of solar axions, the measurement of the Migdal effect, X-ray polarimetry, and several other applied physics goals. We also outline the R&D programs necessary to test concepts that are crucial to advance detector performance towards their fundamental limit: single primary electron sensitivity with full 3D spatial resolution at the 100 micron-scale. These advancements include: the use of negative ion drift, electron counting with high-definition electronic readout, time projection chambers with optical readout, and the possibility for nuclear recoil tracking in high-density gases such as argon. We also discuss the readout and electronics systems needed to scale-up such detectors to the ton-scale and beyond
Recoil imaging for directional detection of dark matter, neutrinos, and physics beyond the Standard Model
Recoil imaging entails the detection of spatially resolved ionization tracks
generated by particle interactions. This is a highly sought-after capability in
many classes of detector, with broad applications across particle and
astroparticle physics. However, at low energies, where ionization signatures
are small in size, recoil imaging only seems to be a practical goal for
micro-pattern gas detectors. This white paper outlines the physics case for
recoil imaging, and puts forward a decadal plan to advance towards the
directional detection of low-energy recoils with sensitivity and resolution
close to fundamental performance limits. The science case covered includes: the
discovery of dark matter into the neutrino fog, directional detection of
sub-MeV solar neutrinos, the precision study of coherent-elastic
neutrino-nucleus scattering, the detection of solar axions, the measurement of
the Migdal effect, X-ray polarimetry, and several other applied physics goals.
We also outline the R&D programs necessary to test concepts that are crucial to
advance detector performance towards their fundamental limit: single primary
electron sensitivity with full 3D spatial resolution at the 100
micron-scale. These advancements include: the use of negative ion drift,
electron counting with high-definition electronic readout, time projection
chambers with optical readout, and the possibility for nuclear recoil tracking
in high-density gases such as argon. We also discuss the readout and
electronics systems needed to scale-up such detectors to the ton-scale and
beyond.Comment: 77 pages, 20 figures. Submitted to the Proceedings of the US
Community Study on the Future of Particle Physics (Snowmass 2021