ELQA MP3 08 Septembre 2010, R. Mompo, TE/MTE-EI ELQA IPQs Splice measurements “New” current cycle applied since July 2010 Impact of low band passive filters.

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Presentation transcript:

ELQA MP3 08 Septembre 2010, R. Mompo, TE/MTE-EI ELQA IPQs Splice measurements “New” current cycle applied since July 2010 Impact of low band passive filters on the quality of our meas. RQ10.L8 without filters RQ10.L8 with 166 Hz filters RQ10.R4 with 7 Hz filters Summary of measurements performed this summer: In L4 on 23 & 29/07/2010 In R8 from 29/07 to 27/08/2010 In R2 on 02/09/2010 In R4 on 02/09/2010 R. Mompo on behalf of ELQA team

ELQA MP3 08 Septembre 2010, R. Mompo, TE/MTE-EI ELQA ~ 1 hour per magnet Example of cycles used as from July 2010

ELQA MP3 08 Septembre 2010, R. Mompo, TE/MTE-EI ELQA Same voltage scale Impact of low band passive filters on the quality of our meas. (1/3)

ELQA MP3 08 Septembre 2010, R. Mompo, TE/MTE-EI ELQA Same voltage scale Impact of low band passive filters on the quality of our meas. (2/3)

ELQA MP3 08 Septembre 2010, R. Mompo, TE/MTE-EI ELQA Same voltage scale Impact of low band passive filters on the quality of our meas. (3/3)

ELQA MP3 08 Septembre 2010, R. Mompo, TE/MTE-EI ELQA If we zoom, we clearly see the different steps

ELQA MP3 08 Septembre 2010, R. Mompo, TE/MTE-EI ELQA In fact, we even see an effect on the measurement of one aperture when the current is ramping in the other aperture! This effect is filtered during the manual analyses but not yet in ISRM program In fact, we even see an effect on the measurement of one aperture when the current is ramping in the other aperture! This effect is filtered during the manual analyses but not yet in ISRM program

ELQA MP3 08 Septembre 2010, R. Mompo, TE/MTE-EI R [n  ] (Manual analyses) R. Mompo R [n  ] (Automatic analyses) MSE [e-9] (Automatic analyses) Q10.L4DFLCS.7L DFLCS.7L DFLCS.7L Q9.L4DFLCS.7L / / 6.1 *5.6 / 4.8 * DFLCS.7L / / / DFLCS.7L / / 17.8 *5.7 / 4.9 * Q8.L4DFLCS.7L DFLCS.7L DFLCS.7L Q7.L4DFLCS.7L *0.7 * DFLCS.7L DFLCS.7L *0.3 * Measurements performed in L4 on 23 & 29/07/2010 with a 7 Hz low band filter on the input of the 3 DVM cards of PXIELQA01 and 5 min current plateaus cycles. *: File format error to be corrected in ISRM software

ELQA MP3 08 Septembre 2010, R. Mompo, TE/MTE-EI Configuration of the « ACB » and « BCA » switches were not correct !!! Problem corrected on 26/07/2010 but measurements had to be repeated… Sorry! Measurements performed in R8 on 23/07/2010 with a 7 Hz low band filter on the input of the 3 DVM cards of PXIELQA02 and 5 min current plateaus cycles.

ELQA MP3 08 Septembre 2010, R. Mompo, TE/MTE-EI R [n  ] (Manual analyses) R. Mompo R [n  ] (Automatic analyses) MSE [e-9] (Automatic analyses) Q10.R8DFLCS.7R *1.3 * DFLCS.7R DFLCS.7R *0.912 * Q9.R8DFLCS.7R DFLCS.7R DFLCS.7R Q8.R8DFLCS.7R *2.6 * DFLCS.7R DFLCS.7R *1.3 * Q7.R8DFLCS.7R DFLCS.7R DFLCS.7R Measurements performed in R8 from 29/07 to 27/08/2010 with a 7 Hz low band filter on the input of the 3 DVM cards of PXIELQA02 and 5 min current plateaus cycles. *: File format error to be corrected in ISRM software

ELQA MP3 08 Septembre 2010, R. Mompo, TE/MTE-EI R [n  ] (Manual analyses) R. Mompo R [n  ] (Automatic analyses) MSE [e-9] (Automatic analyses) Q10.R2DFLCS.7R *10.8 * DFLCS.7R DFLCS.7R *6.1 * Q9.R2DFLCS.7R DFLCS.7R DFLCS.7R Q8.R2DFLCS.7R *2.0 * DFLCS.7R DFLCS.7R *1.7 * Q7.R2DFLCS.7R DFLCS.7R DFLCS.7R Measurements performed in R2 on 02/09/2010 with a 7 Hz low band filter on the input of the 3 DVM cards of PXIELQA02 and 5 min current plateaus cycles. *: File format error to be corrected in ISRM software

ELQA MP3 08 Septembre 2010, R. Mompo, TE/MTE-EI R [n  ] (Manual analyses) R. Mompo R [n  ] (Automatic analyses) MSE [e-9] (Automatic analyses) Q10.R4DFLCS.7R *11.8 * DFLCS.7R DFLCS.7R *6.1 * Q9.R4DFLCS.7R DFLCS.7R DFLCS.7R Q8.R4DFLCS.7R *2.4 * DFLCS.7R DFLCS.7R *1.7 * Q7.R4DFLCS.7R DFLCS.7R DFLCS.7R Measurements performed in R4 on 02/09/2010 with a 7 Hz low band filter on the input of the 3 DVM cards of PXIELQA01 and 5 min current plateaus cycles. *: File format error to be corrected in ISRM software

ELQA MP3 08 Septembre 2010, R. Mompo, TE/MTE-EI ELQA Conclusions The last measurements performed with 7 Hz low band filters are giving very good results. This is translated by the MSE (Mean Square Error) value than is now reduced by a factor I still have to provide a tolerance for those measurements correlated to the MSE value. We still have 1 technical stop before the end of the year to measure possibly 2 new positions (with 2 systems).