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Academic Training Lecture Regular Programme
Commissioning of the LHC super-conducting magnets systems - The challenges of safely powering the super-conducting magnets. (4/4)
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Europe/Zurich
500/1-001 - Main Auditorium (CERN)
Description
The LHC machine requires more than 1700 power converter systems that supply between 60A and 12kA of precisely regulated current to the superconducting magnets.
In addition to the power converters themselves, utilities (such as air and water cooling, electrical power, communication networks,…) and superconducting elements (current leads, magnets, busbars,…) with their safety systems needed to be commissioned as a single system.
Due to the complexity of commissioning, the power converters with inevitable interaction between the different systems and to guarantee the very high precision (few ppm) required by the beam performance, a three phase test strategy was developed. The first phase comprises the manufacture, integration and reception tests of all systems necessary for high precision power converters (voltage source, current transducers and high precision electronics). The second phase covers the commissioning of all the power converters installed in their final environment with the utilities and with all normal conducting elements on a short circuit. And finally the third phase adds the superconducting magnets.
The presentation will quickly summarized the results and conclusions of the power converter reception tests and the short-circuit tests and will focus on the hardware commissioning of the converters powering the superconducting magnets.
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Quentin King has been the leader of the converter controls section of the power group since 2002 and has headed the project to provide the controls electronics for the LHC power converters. He joined the group in 1998 but first came to CERN as a technical student over 20 years ago when he spent a year with the BDI group working on LEP wire-scanners. At the time he was studying applied physics at Bath University but changed to a career in controls engineering in 1991 when he joined the controls group of the JET Fusion project at the Culham laboratory near Oxford. After spending 6 years developing the real-time controls systems for JET he returned to CERN to work on the newly approved LHC project.
Organised by
Daniele Lajust
