The timing system for the ASDEX upgrade experiment control

Conference · Wed Apr 01 04:00:00 EST 1992 · IEEE Transactions on Nuclear Science (Institute of Electrical and Electronics Engineers); (United States)

OSTI ID:7275825

Raupp, G; Richter, H; Aubanel, C; Bruhns, H; Huber, R; Schramm, G; Trzinski, T; Vallen, H; Warmbrand, A; Zehetbauer, T ^[1]

---

1. Max-Planck-Inst. fuer Plasmaphysik, EURATOM Association, Boltzmannstr. 2, D-8046 Garching (DE)

For the adaptive control system of the ASDEX Upgrade tokamak experiment a new digital timing system was developed. Its structure is centralized and distributed. The timing system defines a systemwide 100 nanosecond absolute timescale by central generation of clock and time zero information. Distributed processes are synchronized by time events and state events generated centrally. The timing system supports preprogrammed operation and as a new feature adaptive operation in close collaboration with the central control computers. A standard modulation technique allows to distribute simultaneously the time and event information via fibre optics cables. The timing system is remote controlled by internal functions using the same fibre optics. This paper summarizes the ASDEX Upgrade timing system design and implementation, and aspects of the integration into the control system.

• OSTI ID: 7275825
• Report Number(s): CONF-9106122--
• Conference Information: Journal Name: IEEE Transactions on Nuclear Science (Institute of Electrical and Electronics Engineers); (United States) Journal Volume: 39:2
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700410* -- Specific Fusion Devices & Experiments-- (1992-)
99 GENERAL AND MISCELLANEOUS
990200 -- Mathematics & Computers
ASDEX TOKAMAK
CLOSED PLASMA DEVICES
CONTROL SYSTEMS
DATA PROCESSING
DESIGN
DIGITAL SYSTEMS
DISTRIBUTED DATA PROCESSING
ELECTRONIC CIRCUITS
EXPERIMENT PLANNING
FABRICATION
PLANNING
PROCESSING
SYNCHRONIZATION
THERMONUCLEAR DEVICES
TIMING CIRCUITS
TOKAMAK DEVICES