Crystal-based extraction using a bent crystal has been already applied at several high-energy hadron accelerators, but has never been applied for electrons. However, this technique can be very promising for synchrotron light sources and for existing and future lepton collider projects as well for nuclear and particle physics detectors and generic detector R&D and in many projects in...
The frequencies of radiation of relativistic particles in periodical crystalline structure are considered. The threshold character of the radiation is discussed. This project has received funding through the MSCA4Ukraine project, which is funded by the European Union.
In the last few years, the STORM collaboration has studied the Strong Field regime in a variety of crystals of interest for the development of innovative electromagnetic calorimeters (such as 0.5 - 4.6 X0 PbWO4). In all the tested samples, a large reduction of the effective radiation length has been observed. This contribution will describe the results, obtained by the STORM collaboration,...
We present the latest results from the ANDROMeDa (Aligned Nanotube Detector for Research On MeV Darkmatter) project, which was funded with 1MEur PRIN grant by the italian Ministry of Research (MUR). The main objective of ANDROMeDa is the development of the Dark-PMT, a novel light Dark Matter (DM) detector based on vertically-aligned carbon nanotubes. The detection scheme is based on...
The study of giant dipole resonance (GDR) as a collective nuclear excitation [1] is a relevant area of theoretical and experimental research. GDR was first observed in the experiments on the braking γ-beam (bremsstrahlung - BS) [2]. Interest in this fundamental phenomenon does not weaken in our days [3].
Channeling radiation (CR) of electrons in crystals has been studied in detail [4] and...
Crystal-based Light Sources (CLS) offer a novel method to produce sources of gamma-rays. Making use of the channelling phenomena, ultra-relativistic charged particles are directed through bent crystals to produce synchrotron-like radiation. These bent crystals are produced by doping a base crystal, thus changing the crystalline inter-planar distances.
In this preliminary study we conduct...
Generalized theory of Compton backscattering in terms of luminosity, suitable for both classical and quantum regimes obtained. Optimal parameters, which require a certain mutual orientation and inclination of the fronts of the laser and electron beams described by 3D Gaussians, correspond to the crab scheme. The scattering of diverging beams was also considered. The constructed theory not...
The combination of chemical and physical processes is the main mechanism of the CNTs' bactericidal action. The mechanism of the antibacterial effect of nanomaterials has not been sufficiently studied to date. Changing the structure of carbon nanomaterials by ion beams allows one to adjust their electrical and magnetic properties, vary the thermal conductivity of individual carbon nanofibers,...
Recent years have witnessed an intense development of accelerator-based sources generating radiation from radiowaves to hard X-rays. Intense electromagnetic radiation in the far‐infrared spectral range is an advanced tool for scientific research in biology, chemistry, and material science because many materials leave signatures in the radiation spectrum. Monochromatic lines in the spectrum...
This study describes the concept of a method for the measurement of flux density distribution in the transverse plane of wide-aperture beams such as radiotherapeutic medical beams. Currently, various approaches are used to modulate a radiation field of photons, electrons, protons and ions. However, all of these methods require continuous monitoring of the dose and spatial parameters of the...
The change in temperature of single crystals in vacuum conditions, such as lithium tantalate (LiTaO3), gives an attractive possibility to generate and accelerate electron and positive ions fluxes up to 100 keV and more. Also, the generation of X-ray and neutron fluxes in this way is very productive. The conception of a pyroelectric accelerator implies a compact device, which does not require...
This work is devoted to the problem of acceleration of ions of various atoms in a liquid medium. This work is a continuation of the series of experimental studies carried out at the Institute of Applied Problems of Physics (IAPP) of the National Academy of Sciences (NAS) of the Republic of Armenia since the beginning of the 90s of the last century.
In order to conduct experimental studies, a...
A desktop universal device for X-ray interferometric diagnostics of structural imperfections in single crystals was developed, created and tested. The proposed device can serve both for scratching the surface of the interferometer crystalline blocks and for bending them in order to generate dislocations in the interferometer blocks using our proposed technology.
It has been proved that the...
Cherenkov effect is well-known phenomenon and finds a broad application in physics including beam diagnostics [1]. Corundum crystals irradiated by charged particles are often used as Cherenkov light source. Corundum radiators may significantly change their optical properties during extensive exploitation with particle beams that would influence Cherenkov light intensity. In this report we...
Particle and radiation beams are widely used for cancer therapy. In last decades neutron sources are becoming more and more popular for medical applications. One of the most advanced technique for cancer treatment is neutron-capture therapy (NCT). The main feature of this technique is using epithermal and thermal neutrons to create a powerful source of radiation in the human body and...
A beam line for 500 MeV positrons is under construction at the applied physics area of the Mainz Microtron MAMI. Positrons will be created by pair conversion of bremsstrahlung, produced by the 855 MeV electron beam of MAMI in a 10 m thick tungsten converter target, and energy selected by an outside open electron beam-line bending magnet. - Results of channeling calculations of 500 MeV...
The INFN Laboratories of Frascati host a sparkling community working on X-ray detection and its possible applications. Among this community, the SIDDHARTA-2 and the VOXES collaborations developed and implied, in the last years, a series of spectroscopic detectors for several purposes, ranging from a few keV to almost 300 keV.
The SIDDHARTA-2 experiment at LNF exploits the large area of...
The mitigation of the beam losses in slow extraction is becoming more and more demanding in accelerator applications for HEP as the beam power is gradually increasing. The successful demonstration of using the proton beam channeling at 450GeV to deflect the beam away from the extraction septa opens the new levels of improving the slow extraction efficiency.
It is yet to be demonstrated that...
