Enstore at JINR. Status and prospects / Nonseparable Schrödinger equation in discrete variable representation

Seminars

Laboratory of Information Technologies

Joint Laboratory Seminar

Date and Time: Tuesday, 23 April 2024, at 3:00 PM

Venue: room 310, Meshcheryakov Laboratory of Information Technologies, online on Webinar

  1. Seminar topic: “Enstore at JINR. Status and prospects”

    Speaker: Alexander Moibenko

    Abstract:

    Enstore is a multi-Petabyte scale tape based Mass Storage System for High Energy Physics Experiments and other scientific endeavors. It has been designed to permit to scale to hundreds of petabytes of storage capacity, manage tens of terabytes per day in data transfers, support hundreds of users, and maintain data integrity. Enstore can be used for data storage needs of any scale, for different kinds of enterprises. The Enstore architecture allows easy addition and replacement of hardware and software сomponents. Enstore after reconfiguration is presented. Configuration changes are considered. Details are discussed. The work done to convert the source code from Python2 to Python3 is described. The upcoming work on the conversion is outlined.


  2. Seminar topic: “Nonseparable Schrödinger equation in discrete variable representation”

    Speaker: Sara Shadmehri

    Abstract:

    To treat quantum dynamical problems which involve nonseparable angular variables, a non-direct product discrete variable representation (npDVR) is developed by constructing the DVR basis on spherical functions orthogonalized on the grids of Lebedev or Popov quadratures for the unit sphere. The superiority of this method is presented by applying this scheme to the problem of hydrogen atom in crossed static electric and magnetic fields and also the time-dependent problem of an atom in strong elliptically polarized laser field. Moreover, the developed npDVR computational scheme allowed us to investigate subtle nondipole effects in the interaction of an atom with a laser field while including the nonseparability of the center-of-mass and relative motion variables in this problem.