Blanco, E.

Paper	Title	Page
WEP061	The Control System for the Cryogenics in the LHC Tunnel [ First Experience and Improvements ]	519
	P. Gomes, E. Blanco, J. Casas, C. Fluder, E. Fortescue-Beck, P. Le Roux, G. Penacoba, M. Pezzetti, M. Soubiran, A. Tovar, L. Zwalinski CERN, Geneva
	The Large Hadron Collider (LHC) has been commissioned and started operation with beams in 2008, at CERN. Several months of cryogenic operation in nominal conditions have triggered an optimisation of the cryogenic process functional analysis. This lead to a few revisions of the control logic, realised on-the-fly; and to a major rebuild of the logic, implemented during the 2008-9 shut-down. In order to improve the operability, availability and safety of the LHC cryogenics, the process control structure was reorganised; the logic of process phases, interlocks, regulators and templates for automatic code generators were modified; the hard-wired vacuum-quality signals were upgraded to provide more detailed information; the protection of current feed boxes was enhanced by the addition of new signals; a new tool for remote-reset of Profibus-IO was developed. The databases, containing all instruments and controls information, were rationalized; the automatic specification generators, which extract the parameters used in the control software, were simplified. This paper describes the main improvements applied during the 2008-09 shut-down, and suggests perspectives of further developments.
	Poster
WEP084	Remote Controls for the Active Alignment System of the LHC Low Beta Quadrupoles	564
	M. Acar, E. Blanco, D. Martin-Gomez, J. P. Palluel CERN, Geneva
	The low beta quadrupole magnets in the CERN Large Hadron Collider (LHC) accelerator are installed in high radiation areas next to the experiments. A fully remote positioning control system based on motorized jacks has been implemented to align the magnets in real time. The system is also equipped with sophisticated survey sensors based mainly on hydrostatic leveling and stretched-wire position systems. Dedicated monitoring and control applications have been developed to allow the LHC operation team to supervise this complex system from the CERN Control Center. This paper gives an overview of the present controls architecture and describes the new operational tools developed to assist the beam operation.
THD003	UNICOS: An Open Framework	910
	E. Blanco, F. B. Bernard, P. Gayet, H. Milcent CERN, Geneva
	In early 2001 an object collection called UNICOS (Unified Control System) developed at CERN with the objective of building the LHC cryogenics control system was commissioned for the first time. It deployed the controls layers covering the SCADA (Supervisory Control And Data Acquisition) and the PLC (Programmable Logic Controllers) layers. A possibility of re-targeting the system on other kinds of applications and environments was identified. Since then, the framework proposes a reusable environment composed of a set of components for the SCADA part and several solutions for the front end part (i.e. others than PLC). Together with the description of the UNICOS environment, the paper describes a number of very different applications developed at CERN based on the UNICOS methodology: (1) SURVEY, to align the focusing magnets of the LHC located on both sides of the experiments; (2) Quench Protection System, to display and act on the devices used to protect the superconducting elements of the LHC; (3) Powering Interlock Controller, to manage the powering permissions of the electrical circuits making the LHC.