MPP 18 June 2008, M. Bednarek & J. Ludwin, CERN 1 Measurements of voltage over main dipole magnet B30R7 Mateusz Bednarek & Jaromir Ludwin on behalf of.

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Presentation transcript:

MPP 18 June 2008, M. Bednarek & J. Ludwin, CERN 1 Measurements of voltage over main dipole magnet B30R7 Mateusz Bednarek & Jaromir Ludwin on behalf of the ELQA team AT/MEI-FP 18 June 2008

MPP 18 June 2008, M. Bednarek & J. Ludwin, CERN 2 Checking balance between two apertures

MPP 18 June 2008, M. Bednarek & J. Ludwin, CERN 3 Ua + Ub, Opening EE switch at 3 kA

MPP 18 June 2008, M. Bednarek & J. Ludwin, CERN 4 Checking the balance between coils within each aperture

MPP 18 June 2008, M. Bednarek & J. Ludwin, CERN 5 U1 + U2 and U3 + U4 at 5 kA – no unbalance

MPP 18 June 2008, M. Bednarek & J. Ludwin, CERN 6 Comparison between measurements Sum Ua + Ub visible on first plot can be calculated from voltages U1, U2, U3, U4: Ua + Ub = U1 – U2 + U4 – U3

MPP 18 June 2008, M. Bednarek & J. Ludwin, CERN 7 Ua + Ub calculated from U1, U2, U3, U4

MPP 18 June 2008, M. Bednarek & J. Ludwin, CERN 8 Ua + Ub on C29R7, opening switches at 5 kA