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MOP12 |
Role of ECRISs to reveal astrochemical processes | |
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| Electron Cyclotron Resonance (ECR) Ion Sources are widely used as the first stage of high energy (MeV – GeV) accelerators providing ion beams for versatile research fields including nuclear and particle physics. However, in the Atomki the 2nd generation 14 GHz ECR ion source operates as a standalone device opening the possibility to develop research areas requiring low energy ion beams in the range of 0.5 keV – 100 keV. One of this research fields is called astrochemistry. Astrochemistry has been the recipient of continuously increasing interest in the last few decades. The relevance of interstellar molecules to the emergence of life is strong motivation for better comprehending the astrochemical mechanisms leading to their formation and destruction. For this purpose, a new beamline and a special experimental chamber AQUILA (Atomki-Queen’s University Ice Laboratory for Astrochemistry) were installed and commissioned recently to the Atomki ECRIS. AQUILA has been purposefully designed to study the chemical evolution of ices analogous to those that may be found in the dense interstellar medium or the outer Solar System as a result of their exposure to low energy ion beams. In this contribution the carefully designed ion transport system, the way of the well-controlled irradiation methods and also the main features of the AQUILA analytic system will be presented. | ||
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TUD2 |
A novel test-facility for ECRIS plasma diagnostics: optical spectroscopy, X-ray imaging and spectroscopy, mm-wave polarimetry | |
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In the frame of the PANDORA project and the SAMOTHRACE ecosystem (Italian PNRR in the EU Next Gen Program contest), two new plasma diagnostics testbenches – PYN-HO and VESPRI2.0 setups – have been developed at INFN-LNS, with the aim to design and improve detectors and techniques beyond the state of art. The PYN-HO prototype is conceived to operate in four configurations: two of them to enhance high resolution X-ray imaging and space-resolved spectroscopy, also including X-ray tomography using multi pin-hole CCD systems, involving algorithms for Single Photon-Counted and High-Dynamic-Range analysis, with related calibrations via SDD; the other two are dedicated to high energy resolution diffractometric spectroscopic measurement in the X-ray and optical domains, based on micrometric gratings. The VESPRI2.0 mm-wave polarimeter is based on an innovative superheterodyne approach to measure plasma-induced Faraday rotation from Lissajous figure detection and estimate the plasma line-integrated density. Prototypes can be installed in ECRIS for several plasma physics studies [4], such as investigations of plasma structure, confinement dynamics, instabilities and turbulence, in-plasma and plasma vessel elemental composition, local thermodynamic parameters, etc. which are directly related to ion beam performances in ECRIS. The design and features of the prototypes and the first characterizations performed with Ar plasma in the INFN-LNS Flexible Plasma Trap will be presented.
[1] D. Mascali et al., Universe, vol. 8, p. 80, 2022; [2] E. Naselli et al., Condens. Matter, vol. 7, no. 1, p. 5, 2022; [3] G. Torrisi et al., Front. Astron. Space Sci., vol. 9, p. 949920, 2022; [4] E. Naselli, Eur. Phys. J. Plus, vol. 138, p. 599, 2023. |
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