ICALEPCS2011 - List of Authors (Scannicchio, D.)

Paper

Title

Page

Lhc Dipole Magnet Splice Resistance From Sm18 Data Mining

98

H. Reymond, O.O. Andreassen, C. Charrondière, G. Lehmann Miotto, A. Rijllart, D. Scannicchio
CERN, Geneva, Switzerland

The splice incident which happened during commissioning of the LHC on the 19th of September 2008 caused damage to several magnets and adjacent equipment. This raised not only the question of how it happened, but also about the state of all other splices. The inter magnet splices were studied very soon after with new measurements, but the internal magnet splices were also a concern. At the Chamonix meeting in January 2009, the CERN management decided to create a working group to analyse the provoked quench data of the magnet acceptance tests and try to find indications for bad splices in the main dipoles. This resulted in a data mining project that took about one year to complete. This presentation describes how the data was stored, extracted and analysed reusing existing LabVIEW™ based tools. We also present the encountered difficulties and the importance of combining measured data with operator notes in the logbook.

Poster MOPKN007 [5.013 MB]

Paper	Title	Page
MOPKN007	Lhc Dipole Magnet Splice Resistance From Sm18 Data Mining	98
	H. Reymond, O.O. Andreassen, C. Charrondière, G. Lehmann Miotto, A. Rijllart, D. Scannicchio CERN, Geneva, Switzerland
	The splice incident which happened during commissioning of the LHC on the 19th of September 2008 caused damage to several magnets and adjacent equipment. This raised not only the question of how it happened, but also about the state of all other splices. The inter magnet splices were studied very soon after with new measurements, but the internal magnet splices were also a concern. At the Chamonix meeting in January 2009, the CERN management decided to create a working group to analyse the provoked quench data of the magnet acceptance tests and try to find indications for bad splices in the main dipoles. This resulted in a data mining project that took about one year to complete. This presentation describes how the data was stored, extracted and analysed reusing existing LabVIEW™ based tools. We also present the encountered difficulties and the importance of combining measured data with operator notes in the logbook.
	Poster MOPKN007 [5.013 MB]