NXV4 JINRLIB - SU2 class

JOINT INSTITUTE FOR NUCLEAR RESEARCH

JINRLIB Program Library

DXF - digital filter

Authors: Mihai Tiberiu Dima, Maria Dima
Leader: Yu. N. Pepelyshev

Highlights

The DXF digital filter was designed for analysis of neutron noise (and other mechanical, or flow vibrations) at the IBR-2M pulsed fast neutron reactor.

The filter fields a set of 3 classical (Poisson, Hamming, Blackman) apodisation functions - in real space, together with GX our (highly-performing) modified-Gaussian window function and O₄. Additionally, we implemented our internationally unique FoxLima set of apodisations - in Fourier space, F₀ ... F₉.

The filter has 2 embodiments:

   - file-2-file ..... designed for reading huge files, filtering them and writing to new files. This version works with double 's.

   - vec-2-vec ... designed for reading from a polymorphic vector and writing the results to a vector of the same type. The code
              comes instantiated with the following types: scalar, cpx<scalar>, vu2<scalar>, vu2<cpx<scalar>>,
              su2<scalar>, su2<cpx<scalar>> - where scalar = int, float, double, long double.
              The types vu2 and su2 are SU(2) vectors, respectively matrices; cpx is the complex type.

The class overloads the cout operator to display filter's working parameters.

The code is move-semnatix compliant, observes the objects' non-abelian nature, (conforms to Concepts^cxx20 for gcc > 10) and is supplied in library form compiled under c++20 with gcc-9.3.1 20200408. The cpx, vu2, su2 libraries are supplied together with the filter, compiled under the same distribution.

Documentation - manual, with main & application tutorials

Downloads - C++ libs^⁽¹⁾ as *.tgz, *.zip and examples: 1, 2, 3, 4, appl

^⁽¹⁾gcc-9.3.1 20200408 //... linux-3.10.0-1160.83.1.el7.x86_64

This project was realised in the framework of the 04-4-1105-2011/2023 "Development of the IBR-2 Facility with a Complex of Cryogenic Neutron Moderators" research theme, of the Frank Laboratory for Neutron Physics JINR.