LHC QPS Review Committee

Session

Individual short presentations/discussions addressing panel questions

5

25 Feb 2009, 08:30

CERN

10. Symmetric quench experience and planned solution (20’+10')

Reiner Denz

25/02/2009, 08:30

12. Are there any other superconducting busses not being monitored by a quench detection system: the diode area

Michael Koratzinos

25/02/2009, 09:00

13. Are there any other superconducting busses not being monitored by a quench detection system: 13kA & 6kA & 600A

Robert Henry Flora

25/02/2009, 09:15

15. Mechanical details of the bypass diodes

Knud Dahlerup-Petersen

25/02/2009, 09:40

16. How were the diodes tested prior to installation

Andrzej Siemko

25/02/2009, 09:55

17. Stresses on diode joints

Knud Dahlerup-Petersen

25/02/2009, 10:10

20. Effects of standard component failures as well as radiation damage on the operation of the QPS (fail safe or not). What design features make the system fail safe? Details on the detection circuits.

Reiner Denz

25/02/2009, 10:50

19. What limits the maximum negative di/dt for the magnet systems

Hugues Thiesen

25/02/2009, 11:20

32. Which experiences have been gained from the accident with respect to the expected behaviour of the existing QPS. Did everything react as designed? Did quenches propagate along the magnet chain due to transients and sudden current changes?

Sandrine Le Naour

25/02/2009, 11:40

22. MI^2T limits for magnets, what are they and how where they developed. Time budgets for detection and energy extraction for the various magnet system.

Andrzej Siemko

25/02/2009, 12:10

24. Description of energy extraction components and design criteria

Knud Dahlerup-Petersen

25/02/2009, 14:00

27. How does electromagnetic noise (from environment and beam) affect the novel protection circuits for bus bar splices?

Robert Henry Flora

25/02/2009, 14:15

33. Reserve

25/02/2009, 14:30

34. Procedures used and the resulting traveler associated with the failed busbar joint. Ultrasound tests of joints.

Paolo Fessia

25/02/2009, 14:45

35. Stresses on busbar joints.

Paolo Fessia

25/02/2009, 15:00

36. QPS commissioning plan. Quality assurance during the installation of the new quench detection systems.

Fabio Formenti

25/02/2009, 15:15

28. Schedule foreseen for the completion of the new Enhanced QPS system

Fabio Formenti

25/02/2009, 15:30

30. How does standard component failure effect the operation of the QPS? In particular, what will happen in case of a mains power loss? Does the system rely on the proper functioning of a UPS system? Is the redundancy system properly designed on all levels?

Knud Dahlerup-Petersen

25/02/2009, 15:50

37. Reserve

25/02/2009, 16:30