FLEROV LABORATORY of NUCLEAR REACTIONS

Scientific Seminar

On Thursday, 15 September 2016, at 11.00 am in the FLNR Conference hall a seminar “LISE++: Exotic beam production with separator” will be held.

Speaker: Oleg B. Tarasov* (NSCL / MSU, East Lansing, MI 48824, USA)

Abstract:

The LISE++ package allows simulation of isotope production, separation, ion optical transport through magnetic and electric systems, and ion interactions in matter. The suite includes utilities for simulation of experiments. The code is built around a user-friendly interface that helps to seamlessly construct any fragment separator from the different blocks. The LISE++ package includes configurations of existing separators at NSCL/MSU, FLNR/JINR, RIKEN, GANIL, GSI, TAMU and others. The Projectile Fragmentation, Fusion-Evaporation, Fusion-Fission, Coulomb Fission, and Abrasion-Fission models are used in the program to simulate experiments at beam energies above the Coulomb barrier.

Recently, important improvements in the code version 10 were performed in the analytical and Monte Carlo calculations of transmission, and accuracy of reaction product distributions. Large progress has also been achieved in ion-beam optics with the introduction of elemental blocks that enable a new type of configuration, labeled “extended (or elemental)” in addition to the classic “sector” configuration. Optical matrices can now be calculated within the LISE++ code (up to second order), directly input by the user, or linked to COSY maps (up to fifth order). In the latest version of the program, export/import of TRANSPORT files is now possible, with minimization of quadrupole fields following user constraints. This version also includes new tools as “Radiation residue calculator”, GEMINI++ GUI and “ETACHA4” (GUI and DOS versions).

A set of modifications are planned to improve the functionality of the code. The modifications include a transportation to a modern graphics framework and updated compilers to aid in the performance and sustainability of the code. To accommodate the diversity of our users, we extend the software from Windows to a cross platform application. The calculations of beam transport and isotope production are becoming more computationally intense with the new large scale facilities. In order to perform the calculations in acceptable time, code optimization and parallel methods are applied.

The LISE++ package which includes also the PACE4, Global, Charge, ETACHA4, Spectroscopic calculator codes can be downloaded freely from the following site: http://lise.nscl.msu.edu.

* On leave FLNR / JINR, Dubna, Moscow region, 141980, Russian Federation

The seminar will be done in Russian