Process Control Methods for Operation of Superconducting Cavities at the LEP Accelerator at CERN
Independent thesis Advanced level (degree of Master (One Year)), 20 credits / 30 HE creditsStudent thesis
The aim of this thesis is to analyse the cryogenic process for cooling superconducting radio frequency accelerator test cavities in the LEP accelerator at CERN. A liquefaction cryoplant is analysed, including the production of liquid helium at 4.5 K, the systems for distribution and regulation of liquid helium, and the radio frequency field used for accelerating particles. After discussing regulation problems and modifications planned for a new cavity installation in 1992, different techniques for specifying the control programs for the new installation are evaluated. Various diagramming techniques, standards and methodologies, and Computer Aided Software Engineering-tools, are compared as to their practical usefulness in this kind of process control. Finally, in accordance with anticipated requirements, possible ways of making high and low level control program specifications are suggested.
Place, publisher, year, edition, pages
1992. , 54 p.
Superconductivit, Niobium cavities, Liquid helium, Cryoplant, Software specification, Process control, LEP 200, LEP accelerator
National CategoryPhysical Sciences
IdentifiersURN: urn:nbn:se:liu:diva-56503ISRN: LiTH-IFM-EX--527OAI: oai:DiVA.org:liu-56503DiVA: diva2:319822
Subject / course
Frandsen, Poul, Dr.