1. 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

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

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. (1/3)

4. 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)

5. 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)

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

7. 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

8. 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.7L4.15.36.10.06 DFLCS.7L4.25.45.20.04 DFLCS.7L4.36.05.20.117 Q9.L4DFLCS.7L4.45.7 / 5.412.0 / 6.1 *5.6 / 4.8 * DFLCS.7L4.55.6 / 6.15.6 / 5.90.008 / 0.145 DFLCS.7L4.65.4 / 4.918.4 / 17.8 *5.7 / 4.9 * Q8.L4DFLCS.7L4.75.16.30.045 DFLCS.7L4.84.6 0.002 DFLCS.7L4.95.34.70.013 Q7.L4DFLCS.7L4.105.3 0.6 *0.7 * DFLCS.7L4.115.1 0.117 DFLCS.7L4.125.6 7.6 *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

9. 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.

10. 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.7R8.13.60.2 *1.3 * DFLCS.7R8.23.33.10. 359 DFLCS.7R8.38.516.3 *0.912 * Q9.R8DFLCS.7R8.46.4 0.546 DFLCS.7R8.55.35.70.499 DFLCS.7R8.65.06.70.554 Q8.R8DFLCS.7R8.74.75.7 *2.6 * DFLCS.7R8.84.8 0.069 DFLCS.7R8.95.712.3 *1.3 * Q7.R8DFLCS.7R8.106.1 5.70.004 DFLCS.7R8.115.3 5.20.002 DFLCS.7R8.125.3 0.0005 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

11. 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.7R2.15.811.5 *10.8 * DFLCS.7R2.23.33.50.417 DFLCS.7R2.35.322.2 *6.1 * Q9.R2DFLCS.7R2.47.57.30.0003 DFLCS.7R2.56.16.50.0003 DFLCS.7R2.65.15.70.0003 Q8.R2DFLCS.7R2.74.53.8 *2.0 * DFLCS.7R2.84.7 0.043 DFLCS.7R2.95.211.6 *1.7 * Q7.R2DFLCS.7R2.103.8 3.90.001 DFLCS.7R2.114.2 0.001 DFLCS.7R2.124.0 3.50.005 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

12. 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.7R4.15.914.6 *11.8 * DFLCS.7R4.27.3 0.002 DFLCS.7R4.36.123.7 *6.1 * Q9.R4DFLCS.7R4.46.57.00.013 DFLCS.7R4.57.7 0.003 DFLCS.7R4.67.56.90.067 Q8.R4DFLCS.7R4.77.14.6 *2.4 * DFLCS.7R4.86.56.40.008 DFLCS.7R4.97.113.6 *1.7 * Q7.R4DFLCS.7R4.105.5 5.70.002 DFLCS.7R4.115.6 5.50.001 DFLCS.7R4.125.6 5.30.003 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

13. 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 1000. 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).