1 / 26

SSD SEU Candidates Investigation

SSD SEU Candidates Investigation. All Candidates 2010 - 2013. Measured and Integrated Dose. RAMSES Sensors , but dose given in Sv and not in Rad

annora
Télécharger la présentation

SSD SEU Candidates Investigation

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. SSD SEU CandidatesInvestigation

  2. AllCandidates 2010 - 2013

  3. Measured and Integrated Dose • RAMSES Sensors, but dose given in Sv and not in Rad • No sensorsexatlynearourracks (seenext slide map). The twonearest (on A side) are one on the miniframe (PMIL2513) and one at the edgeof the ALICE Cavern (PMIL2511). Ourracks are in between. Notsureifthere are sensors on I side • Twovaluesofmeasured and integrated dose, one per sensor

  4. Measured Dose 2010-2013 (Sv/h) – PMIL2513

  5. Measured Dose 2010-2013 (Sv/h) – PMIL2511

  6. Measured Dose 2010-2013 (Sv/h) – PMIL2513(Zoom)

  7. Measured Dose 2010-2013 (Sv/h) – PMIL2511(Zoom)

  8. Integrated Dose 2010-2013 (Sv) – PMIL2513

  9. Integrated Dose 2010-2013 (Sv) – PMIL2511

  10. DDL 513 – Event 1

  11. DDL 513 – Event 2

  12. DDL 513 – Event 3

  13. DDL 514 – Event 1

  14. DDL 514 – Event 2

  15. DDL 514 – Event 3

  16. DDL 516 – Event 1

  17. DDL 519 – Event 1

  18. DDL 521 – Event 1 The Log entry waswritten at 2.52 am (12/07/2010), butaccordingto the logbook the problemsstarted at leastaround 1 am.

  19. DDL 523 – Event 1

  20. Dose absorbedwhen the SEU happened(PMIL2513 – PM2511) • DDL 521: 0.0076 Sv – 0.00055 Sv (this DDL is on I side butthisvalueismeasured on the A side. Notsureifthereis a RAMSES on I side) • DDL 514: • 1 event: 0.474 Sv – 0.0079 Sv (Probablysolved just with a powercycle) • 2 event: 0.606 Sv – 0.0082 Sv (ie 0.132 Sv – 0.0003 Sv wrtevent 1) • 3 event: 1.998 Sv – 0.0115 Sv (ie 1.396 Sv – 0.0033 Sv wrtevent 2) • DDL 513: • 1 event: 1.357 Sv – 0.0108 Sv • 2 event: 2.356 Sv – 0.0117 Sv (ie 1.000 Sv – 0.0009 Sv wrtevent 1) • 3 event: 3.004 Sv – 0.0124 Sv (ie 0.648 Sv – 0.0007 Sv wrtevent 2) • DDL 516: 2,797 Sv – 0.0123 Sv • DDL 519: 2.855 Sv – 0.0123 Sv • DDL 523: 2.982 Sv – 0.0124 Sv (this DDL is on I side butthisvalueismeasured on the A side. Notsureifthereis a RAMSES on I side)

  21. Total InstantaneousLuminosity

  22. Total InstantaneousLuminosity (Zoom)

  23. Total IntegratedLuminosity

  24. Integrated Dose / IntegratedLuminosity

  25. Conclusions • Some casesclearlyassociatedto a peak in the radiationmeasuredappeared just before the event: • DDL 513 event 1, DDL 514 events 2 and 3 • Almostall the othershappenedduring STABLE BEAMS but no evidentpeak in the measured dose wrtimmediatelybefore or after. • Whichactionhastobetaken?

More Related