S.M. Flanagan

The Between-Pulse Data Analysis Infrastructure at the DIII-D National Fusion Facility

Abstract The DIII-D National Fusion Facility is a national and international collaboration among approximately 100 institutions with an overall goal of establishing the scientific basis for the optimization of the tokamak approach to fusion energy. A key enabler of the DIII-D mission is its extensive diagnostic set (>50), which measures relevant equilibrium parameters as well as turbulence fields. The ability to access, analyze, visualize, and assimilate data between DIII-D pulses that enables real-time decision making by an international team is a critical infrastructure component of the successful operation of the DIII-D facility. This paper examines the computer science issues associated with deploying this infrastructure in a geographically distributed environment where near-real-time support of control room decision making is required. The implication of this work on the operation of future experimental machines such as ITER is also presented.

Developments in Remote Collaboration and Computation

Abstract The National Fusion Collaboratory (NFC) is creating and deploying collaborative software tools to unite magnetic fusion research in the United States. In particular, the NFC is developing and deploying a national FES “Grid” (FusionGrid) for secure sharing of computation, visualization, and data resources over the Internet. The goal of FusionGrid is to allow scientists at remote sites to participate as fully in experiments, machine design, and computational activities as if they were working on site thereby creating a unified virtual organization of the geographically dispersed U.S. fusion community.