Designing and commissioning pre-analysis system for intense D-D/D-T neutron generator

Abstract

An intense accelerator-based D-D/D-T neutron generator, with neutron yields of 6 × 10 10 n/s due to the D-D reaction and 6 × 10 12 n/s due to the D-T reaction, is being developed at Lanzhou University in China. The 2.45 GHz electron cyclotron resonance (ECR) ion source and the pre-analysis system, as the front injector for the accelerator tube of the neutron generator, are designed to provide a 35 mA deuterium beam for neutron production and a 50 mA proton beam for commissioning. The pre-analysis system consists of a solenoid, a steering magnet, a vacuum chamber, a dipole magnet, three quadrupole magnets, a beam dump, and a Faraday cup. The ion source and pre-analysis system were completed a trial operation, and the intensity of the proton beam measured at the end of the pre-analysis system was higher than 50 mA when the hydrogen ion beam current extracted from the ECR ion source was greater than 70 mA.

All Redox‐Active 2D MXene and 0D Phosphomolybdic Acid Nanoclusters‐Anchored Polypyrrole Nanotubes for High‐Performance Aqueous Hybrid Supercapacitors

“…Their BET surface area is revealed to be 20.4 m 2 /g with broad pore size distribution in the range of 50-120 nm (Figure S2a, inset), which is similar to other studies. [40][41][42] This well-defined nano-tube form of the PMo 12 /PPyNT nanocomposite is important not only because it results in a large surface area, but this also enables higher charge transfer rates. [19,30] In the context of PPy material itself, having nanotube form means that it has a higher proportion of ordered polymer chains, leading to longer conjugation length between the π-electrons and N-atoms on its backbone.…”