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Kaonic atoms at the DAΦNE collider: a strangeness adventure

Kaonic atoms are an extremely efficient tool to investigate the strong interaction at the low energy Frontier, since they provide direct access to the K-N interaction at threshold, eliminating the necessity for extrapolation, unlike in the case of scattering experiments. During the 1970s and 1980s, extensive studies were performed on kaonic atoms spanning across a broad spectrum of elements in the periodic table, ranging from lithium to uranium. These measurements provided inputs and constrai...

Set-up of a methodology to evaluate the consolidation of archaeological waterlogged wood veneered in ivory

This work describes how a conservation method making use of aqueous solutions of lactitol and trehalose (9:1) was chosen to treat several elements of wood furniture veneered in ivory carved in bas-relief and preserved in waterlogged condition. These elements were discovered during the excavations carried out in Villa dei Papiri, the most famous of the luxury villas of Herculaneum. The approach described was based on a dual evaluation. It was carried out: (a) on probe wood specimens produced i...

Observation of rapid frequency chirping instabilities driven by runaway electrons in a tokamak

We report the first observation of chirping instabilities driven by runaway electrons (REs) in a tokamak. The instabilities are accessed during the post-disruption RE beam stage in a low density background plasma ( m-3) on DIII-D. The chirping instabilities are observed when a decelerating loop voltage is applied to the RE beam. The frequency chirping is detected in two distinct frequency bands: 0.1-10 MHz and 30-80 MHz. The mode frequency increases linearly when the toroidal magnetic field s...

Observation of Alfv{\'e}n Eigenmodes driven by off-axis neutral beam injection in the TCV tokamak

Fast-particle driven Alfv´en Eigenmodes (AEs) have been observed in low-collisionality discharges with off-axis neutral beam injection (NBI), electron cyclotron resonance heating (ECRH) and a reduced toroidal magnetic field. During NBI and ECRH, Toroidicity induced Alfv´en Eigenmodes (TAEs) appear in frequency bands close to 200 kHz, and chirping modes are observed at about 40 kHz and 80 kHz that are likely Energetic-Particle-Induced Geodesic Acoustic Modes (EGAMs). When turning off ECRH in t...

Calculation of α knock-on neutron spectra from JET DT plasmas

deuterium-tritium (D-T) experimental campaign (referred to as DTE2) was carried out at the JET tokamak during 2021, providing the first demonstration of steady, high-power fusion performance (~10 MW of fusion power sustained for ~5 s) in a tokamak with an ITER-like all- metal wall. These experiments provide the opportunity for studying the behaviour of fusion- born α-particles in reactor-relevant plasmas

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Prodotti recenti

Kaonic atoms at the DAΦNE collider: a strangeness adventure

Set-up of a methodology to evaluate the consolidation of archaeological waterlogged wood veneered in ivory

Observation of rapid frequency chirping instabilities driven by runaway electrons in a tokamak

Observation of Alfv{\'e}n Eigenmodes driven by off-axis neutral beam injection in the TCV tokamak

Calculation of α knock-on neutron spectra from JET DT plasmas

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