Joint research activities at the 3 MV Tandetron™ from IFIN-HH

Abstract

The Horia Hulubei National Institute for Research & Development in Physics and Nuclear Engineering (IFIN-HH) operates, among other facilities, a 3 MV Tandetron™ accelerator, built by High Voltage Engineering Europa B.V. Since commissioning in 2012, the 3 MV Tandetron™ has emerged as an important tool to open new horizons in a variety of accelerator-based research fields.In other words, the 3 MV Tandetron™ accelerator has become one of the key facilities in the landscape of Romanian in both basic research and applications. In addition, our laboratory represents an adequate environment for training young scientists and undergraduates since they can develop marketable skills through accelerator-based research, such as data collection/analysis, software development or simulations. After a brief description of the facility, several prominent highlights defining our research capabilities are described. Finally, our ongoing and future upgrades plan is depicted. IntroductionThe Romanian journey in the field of tandem accelerator-based research began in 1973 with the installation of a 7.5 MV FN Tandem machine, built by the High Voltage Engineering Corporation (HVEC), Bloomington, MA, at the Institute of Atomic Physics (IFA), located at Magurele, outside Bucharest. Later on (after 1990), it was upgraded from the original terminal voltage of 7.5 MV (FN type) to 9 MV, by introducing SF 6 into the insulating gas mixture [1, 2] and replacing the belt with a pelletron. A quick glimpse in the history of our laboratory: in 1977, the Institute of Physics and Nuclear Engineering (IFIN) became was separated from the Institute of Atomic Physics (IFA), and since 1996, IFIN adopted the name of its founder, "Horia Hulubei" National Institute for Research and Development in Physics and Nuclear Engineering (IFIN-HH). To enable the delivery of extra beam-hours, from 3000 to more than 5000 h per year, a series of improvements to the 9 MV accelerator started in 2006 and still continues nowadays; for example, the tandem ion injector was redesigned, two sputtering negative ion sources and a beam pulsing system in the ns and ms range were mounted, and the vacuum system and main power supplies were replaced [3].

Exploring fs-laser irradiation damage subthreshold behavior of dielectric mirrors via electrical measurements

“…The metal-to-oxygen ratio in the films was controlled by adjusting oxygen pressures (0.6, 0.8 and 1 Pa). After deposition, the elemental composition and thickness of the films were determined using non-Rutherford backscattering spectrometry (NRBS) analysis with a collimated 3.042 MeV He beam, delivered by the 3.0 MV Cockcroft–Walton tandem accelerator at ‘Horia Hulubei’ National Institute for Physics and Nuclear Engineering (IFIN-HH), Măgurele, Romania [ 26 , 27 ] .…”

Ion velocity effect governs damage annealing process in defective KTaO3

“…Peak dpa (µm) Sn (keV nm −1 ) Se (keV nm measurements were performed at room temperature (∼300 K) using the 3 MV Tandetron Cockcroft-Walton accelerator located at IFIN-HH, Magurele, Romania [20,21].…”