TJ-II Operation Tracking from Cadarache

Abstract The TJ-II remote participation system was designed to follow the TJ-II discharge production, even allowing the physicist in charge of operations to be in a remote location. The system has been based on both Web servers and Java technology. These elements were chosen for their open character, security properties, platform independence, and technological maturity. Web pages and Java applications permit users to access experimental systems, data servers, and the operation logbook. Security resources are provided by the PAPI system, a distributed authentication and authorization system. The TJ-II remote participation tools have allowed us to command and follow the stellarator operation from Cadarache. More than 1000 digitizer channels and more than 20 diagnostic control systems were remotely accessed from Web pages for monitoring/programming purposes. One Java application provided online information about the acquisition status of channels and acquisition cards. A second Java application showed temporal evolution signals that were refreshed in an automated way on the screen after each shot. A third Java application provided access to the operation logbook. In addition to these tools, we used the VRVS (virtual room videoconferencing system) (FUSION community, X-Point room) and the EFDA (European Fusion Development Agreement) Messenger Service for instant messaging (Jabber client).

[1]  Augusto Pereira,et al.  Synchronization resources in heterogeneous environments: Time-sharing, real-time and Java , 2006 .

[2]  Diego R. López,et al.  The PAPI system: point of access to providers of information , 2001, Comput. Networks.

[3]  S. Balme,et al.  Using remote participation tools to improve collaborations , 2005 .

[4]  Mariano Ruiz,et al.  Distributed real time data processing architecture for the TJ-II data acquisition system , 2004 .

[5]  R. Castro,et al.  An authentication and authorization infrastructure: The PAPI system , 2006 .

[6]  A. Portas,et al.  Autonomous acquisition systems for TJ-II: controlling instrumentation with a fourth generation language , 2004 .

[7]  T. Yamamoto,et al.  Remote participation for LHD experiments , 2006 .

[8]  A. Portas,et al.  Multi-tier approach for data acquisition programming in the TJ-II remote participation system , 2004 .

[9]  Augusto Pereira,et al.  Overview of the TJ-II remote participation system , 2006 .

[10]  L. Pacios,et al.  First plasmas in the TJ-II flexible Heliac , 1999 .

[11]  A. Portas,et al.  Design of the TJ-II remote participation system , 2003 .

[12]  A. Portas,et al.  The TJ-II data acquisition system: an overview , 1999 .

[13]  A. Portas,et al.  Accessing TJ-II data with remote procedure call , 2001 .

[14]  A. Portas,et al.  Data management in the TJ-II multi-layer database , 2000 .

[15]  A. Portas,et al.  Present status of the TJ-II remote participation system , 2005 .

[16]  A. Portas,et al.  A distributed synchronization system for the TJ-II local area network , 2004 .

[17]  David P. Schissel,et al.  Advances in remote participation for fusion experiments , 2005 .

[18]  Augusto Pereira,et al.  Applying a message oriented middleware architecture to the TJ-II remote participation system , 2006 .

[19]  J. M. Theis,et al.  Remote experiment participation on Tore-Supra , 2004 .

[20]  A. Portas,et al.  Software and hardware developments for remote participation in TJ-II operation. Proof of concept using the NPA diagnostic , 2002 .

[21]  Mauro Marinilli.  Java Deployment with JNLP and WebStart , 2001 .