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14th CAA Cross-Calibration meeting , York, 5-7 Oct 2011

STAFF CAA products & Cross-Calibration activities. Patrick ROBERT & STAFF Team. 0) STAFF management. 1) STAFF-SC DWF. 2) STAFF-SC new calibration tables. 3) STAFF-SC/FGM new comparisons. 4) STAFF Complex Spectra. 5) STAFF-SC CWF. 6) STAFF-SA PPP.

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14th CAA Cross-Calibration meeting , York, 5-7 Oct 2011

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  1. STAFF CAA products & Cross-Calibration activities Patrick ROBERT & STAFF Team 0) STAFF management 1) STAFF-SC DWF 2) STAFF-SC new calibration tables 3) STAFF-SC/FGM new comparisons 4)STAFF Complex Spectra 5)STAFF-SC CWF 6) STAFF-SA PPP 7)STAFF-SC -EFW timing / Poynting vector 8) STAFFSC/SA comparisons continue (SC3) 9) STAFF/WBD comparisons (see O. Santolik presentation) 10) Conclusions 1 14th CAA Cross-Calibration meeting, York, 5-7 Oct 2011

  2. 0)STAFF management ●Corinne Burlaud leaved the team at the end of September 2010. ● At the end of September 2011, Rodrigue Piberne is not still hired !!! ● ONE YEAR without ESA support due to administration problems, mainly on the French side. 1) STAFF-SC DWF ● To be reprocessed, because some important informations were missing. ● Block status has been added to indicate a true time or an interpolated time. ● The whole L1 data base will be remade with same Ted version and Tcor ON (given in DWF files). ● A part of the software has been re-written to be clearer and more efficient : - factor 2.5 on C decommutation program. - factor 11 (NBR) or 7 (HBR) for FTN program producing interpolated DWF. ● A new software is currently used to produce DWF. 2 14th CAA Cross-Calibration meeting, York, 5-7 Oct 2011

  3. 2) STAFF-SC new calibration tables ● A great effort has been done by the technical staff to correct the transfer function of S/C 2,3 & 4. Previous bad estimate was due to a distortion (with time) of the Helmholtz's coils devices used to estimated the transfer function. ● Technical team has computed a correction function to apply to the cal tables. ● For S/C1, the error is different, having been calibrated on ground with different current loops. Average of 3 other will be taken. ● New calibration system is currently updated for further mission (MMS…). ● Preliminary results are given hereafter. 3 14th CAA Cross-Calibration meeting, York, 5-7 Oct 2011

  4. 3) STAFF-SC/FGM new comparisons CLUSTER / Tango (#4) 2001 Sep 23 Old cal table Corrected cal table FGM STAFF 10% to 1% , great ! STAFF FGM 4° unchanged 4 14th CAA Cross-Calibration meeting, York, 5-7 Oct 2011

  5. 3) STAFF-SC/FGM new comparisons (cont.) CLUSTER / Tango (#4) 2001 Sep 23 Wave packet at 6 Hz (TF corrected) 1% on DC 4° unchanged 5 14th CAA Cross-Calibration meeting, York, 5-7 Oct 2011

  6. 3) STAFF-SC/FGM new comparisons (cont.) CLUSTER / Tango (#4) 2001 Sep 23 Wave packet at 1 Hz (TF corrected) STAFF 1% on DC FGM 4° unchanged 6 14th CAA Cross-Calibration meeting, York, 5-7 Oct 2011

  7. 3) STAFF-SC/FGM new comparisons (cont.) CLUSTER / Tango (#4) 2001 Sep 23 Wave packet at 1 Hz (TF corrected) 1.1% shift (3.3nT/296nT) 7 14th CAA Cross-Calibration meeting, York, 5-7 Oct 2011

  8. 4)STAFF Complex Spectra ● to be reprocessed with new cal tables, as corresponding to graphical products Not the first priority. 5)STAFF-SC CWF ● software ready and optimized. ● starting production as soon as new DWF will be available. ● priority are: new DWF, CWF, new CS, new graphical products, year after year. 8 14th CAA Cross-Calibration meeting, York, 5-7 Oct 2011

  9. 6) STAFF-SA PPP ● years 2001 & 2002 are delivered. Few days failed the CAA validation and will be reproduced as soon as possible. ● years 2003, 2004, 2005, 2006 & 2007 are produced. These years need further completion and validation to be delivered. ● due to several bugs and problems encountered with the computer dedicated to the production of these data, production was slower than expected. However, we still think that we can delivered data on time. 7)STAFF-SC -EFW timing / Poynting vector ● study to synchronize STAFF and EFW L2 data is in progress. ● Poynting vector computation has been done with correct results but some more work remain to be done. (Y. Khotyaintsev, P. Robert, B. Grison, A. Tenerani) ● Benjamin Grison will write a document. 9 14th CAA Cross-Calibration meeting, York, 5-7 Oct 2011

  10. 8) STAFF-SA/SC comparisons ● Comparisons between SC (HBR mode) and SA (NBR mode) had been done when WEC 3 was off. ● A new special operation mode has been done since recovery of WEC on S/C 3. This allows frequency overlap between 8 and 180 Hz. SA : despun on board SC: despun on ground ● Event of03 july 2011 around 04:13 (skimming magnetopause; highly variable). ● SC1 cross calibrations presented at OR6 X Y Tot Z 14th CAA Cross-Calibration meeting, York, 5-7 Oct 2011

  11. 9) STAFF/WBD comparisons Prepared by O. Santolik Presented hereafter 14th CAA Cross-Calibration meeting, York, 5-7 Oct 2011

  12. 8) Conclusions (1) Manpower ● sudden C. Burlaud leave has desorganized the team but a special effort has been done to continue activities and software development. Nevertheless, one year without external support was very hard to live. DWF ● production chain of DWF has been entirely revised and optimized, with new inputs. Production will start at very short term. CWF ● despite a lack of dedicated manpower, CWF software has been successfully optimized and is ready for production, immediately after new DWF SA PPP ● despite several bugs and computer problems, production software is finally operational and delivery will follow as soon as validation will be done. STAFF-EFW timing ● Poynting vector computation has been done with correct results but some more work remain to be done. 12 14th CAA Cross-Calibration meeting, York, 5-7 Oct 2011

  13. Conclusion (2) Don’t forget: many things remain to be done (but with low priority): ● Sensitivity, noise instrument, minimum signal recordable versus frequency, etc… have to be defined accurately (already planned action). ● Cross calibration between STAFF-SC/HBR and STAFF-SA must be refreshed after STAFF-SC transfer function correction,. ● Continuity of sensitivity, noise instrument etc… must be checked between STAFF-SC and STAFF-SA. using recent special Burst mode operations ● Comparison of STAFF-SA and WBD (see Santolik Talk) ● Calibration Report document must be re-written since new tranfert function give better results We strongly wish than R.Pi. be hired as soon as possible Too much work for a reduced team buzy by a lot of other works... THANK YOU 13 14th CAA Cross-Calibration meeting, York, 5-7 Oct 2011

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