EUROPEAN ORGANIZATION FOR NUCLEAR RESEARCH CERN-AT DIVISION CERN/ AT-CR/92-1 Process Control Methods for Operation of Superconducting Cavities at the LEP Accelerator at CERN
نویسنده
چکیده
The aim of this work is to analyse the cryogenic process for cooling superconducting radio-frequency accelerator prototype cavities in the Large Electron-Positron collider (LEP) at CERN. A liquefaction cryoplant is analysed, including the production of liquid helium at 4.5 K, the systems for distribution and control of liquid helium, and the radio-frequency system used for accelerating particles. The cryogenic control problems of the cavities based on operation experiences of the prototype modules in 1991 and different solutions and modifications for the future cavity installations are presented in detail. In addition, different techniques for specifying the control programs for new cavities are evaluated. Various diagramming techniques, standards and methodologies, and ComputerAided Software Engineering (CASE) tools, are compared regarding their practical usefulness for the cryogenic process control.
منابع مشابه
EUROPEAN ORGANISATION FOR NUCLEAR RESEARCH CERN – PS DIVISION CERN NUFACT Note 084 CERN/PS 2001-050 (RF) DESIGN OF THE SUPERCONDUCTING SECTION OF THE SPL LINAC AT CERN
In order to set up a powerful proton source for a future Neutrino Factory, increasing at the same time the flux of protons available for new and existing facilities, CERN is studying a 2.2 GeV superconducting Hlinac for 4 MW beam power, called SPL. The superconducting part of this linac covers the energy range from 120 MeV to 2.2 GeV. Three sections made of 352 MHz cavities with nominal ß of 0....
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The SPL [1] working group at CERN is studying a 2.2 GeV Hlinac, which recuperates a large amount of RF hardware from the now decommissioned LEP at CERN. During the ongoing design effort for an optimized layout, it was found that in some cases non-equipartitioned beams tend to exchange energy between the longitudinal and the transverse planes. Strict energy equipartition, however, imposes tight ...
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