JACoW is a publisher in Geneva, Switzerland that publishes the proceedings of accelerator conferences held around the world by an international collaboration of editors.
TY - CONF AU - Tummers, B.J. AU - Heubers, W. ED - Pak, Cheol-on ED - Kurokawa, Shin-ichi ED - Katoh, Tadahiko ED - Furukawa, Kazuro ED - Schaa, Volker RW TI - Palantiri: A Distributed Real-Time Database System for Process Control J2 - Proc. of ICALEPCS1991, Tsukuba, Japan, 11-15 November 1991 CY - Tsukuba, Japan T2 - International Conference on Accelerator and Large Experimental Physics Control Systems T3 - 3 LA - english AB - The medium-energy accelerator MEA, located in Amsterdam, is controlled by a heterogeneous computer network. A large real-time database contains the parameters involved in the control of the accelerator and the experiments. This database system was implemented about ten years ago and has since been extended several times. In response to increased needs the database system has been redesigned. The new database environment, as described in this paper, consists out of two new concepts: (1) A Palantir which is a per machine process that stores the locally declared data and forwards au non local requests for data access to the appropriate machine. It acts as a storage device for data and a looking glass upon the world. (2) Golems: working units that define the data within the Palantir, and that have knowledge of the hardware they control. Applications access the data of a Golem by name (which do resemble Unix path names). The Palantir that runs on the same machine as the application handles the distribution of access requests. This paper focuses on the Palantir concept as a distributed data storage and event handling device for process control. PB - JACoW Publishing CP - Geneva, Switzerland SP - 336 EP - 339 KW - database KW - controls KW - hardware KW - network KW - real-time DA - 1992/12 PY - 1992 SN - 2226-0358 SN - 978-3-95450-254-7 DO - doi:10.18429/JACoW-ICALEPCS1991-S09DPP02 UR - https://jacow.org/icalepcs1991/papers/s09dpp02.pdf ER -