21 research outputs found
Introduzione
Get PDFEnWe study the semigroups B (S) of the bi-ideals of a semigroup S and obtain characterizations of some classes of orthogroups. Further we prove the existence of an isomorphism between B (S) and B (E) when E is the band of the idempotents of an orthogroups S
The DUNE far detector vertical drift technology. Technical design report
Get PDFDUNE is an international experiment dedicated to addressing some of the questions at the forefront of particle physics and astrophysics, including the mystifying preponderance of matter over antimatter in the early universe. The dual-site experiment will employ an intense neutrino beam focused on a near and a far detector as it aims to determine the neutrino mass hierarchy and to make high-precision measurements of the PMNS matrix parameters, including the CP-violating phase. It will also stand ready to observe supernova neutrino bursts, and seeks to observe nucleon decay as a signature of a grand unified theory underlying the standard model. The DUNE far detector implements liquid argon time-projection chamber (LArTPC) technology, and combines the many tens-of-kiloton fiducial mass necessary for rare event searches with the sub-centimeter spatial resolution required to image those events with high precision. The addition of a photon detection system enhances physics capabilities for all DUNE physics drivers and opens prospects for further physics explorations. Given its size, the far detector will be implemented as a set of modules, with LArTPC designs that differ from one another as newer technologies arise. In the vertical drift LArTPC design, a horizontal cathode bisects the detector, creating two stacked drift volumes in which ionization charges drift towards anodes at either the top or bottom. The anodes are composed of perforated PCB layers with conductive strips, enabling reconstruction in 3D. Light-trap-style photon detection modules are placed both on the cryostat's side walls and on the central cathode where they are optically powered. This Technical Design Report describes in detail the technical implementations of each subsystem of this LArTPC that, together with the other far detector modules and the near detector, will enable DUNE to achieve its physics goals
Introduzione
Get PDFEnWe study the semigroups B (S) of the bi-ideals of a semigroup S and obtain characterizations of some classes of orthogroups. Further we prove the existence of an isomorphism between B (S) and B (E) when E is the band of the idempotents of an orthogroups S
On left univocal factorizations of semigroups
No full textWe should like to construct all the semigroups that have a left univocal factorization with factors to pair (A,B) of prescribed semigroups such that their intersections consists of only one element, that is right identity of A and left identity of B
Upper Subrings of a Ring
No full textWe describe maximal ideals of rings that are contained in the adjoint groups of their upper subrings.Описано максимальні ідеали кілець, що містяться в приєднаних групах їхніх верхніх кілець
