Venezia, Mar/Apr 20094th Philae post-launch workshop1 Status Reinhard Roll.

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Presentation transcript:

Venezia, Mar/Apr 20094th Philae post-launch workshop1 Status Reinhard Roll

Venezia, Mar/Apr 20094th Philae post-launch workshop2 è feeding a sample from oven to MS via GC, bypassing GC columns èconsequence of non-operational side terminal of tapping station. èPC#8 è That was our hope!! Budapest 07: the promise

Venezia, Mar/Apr 20094th Philae post-launch workshop3 è New software: èMS oven via GC èbetter HK èdata compression è thoroughly tested: Simulation, GRM, FS è MS not working any more!!! ètwo non-nominal events, both immediately after switch-on of the MS è Most obvious explanation: Software èsuspicion: damaged hardware èone interpretation: Damage in the HV of the MS PC#8: the reality

Venezia, Mar/Apr 20094th Philae post-launch workshop4 è Contingency Slot èdowngrade to previous software èstep-wise testing èRomap data for error analysis (Ampere-meter) è COSAC behaved like prior to PC#8 (i.e. working) èNo permanent hardware damage! PC#8: the reality

Venezia, Mar/Apr 20094th Philae post-launch workshop5 MS COSAC, empty mass spectra under similar temperature conditions PC#4 PC#8, contingency

Venezia, Mar/Apr 20094th Philae post-launch workshop6 è Conclusion è The effect looked like a hardware failure (but is not) è Real reason unknown è Software effect as only plausible cause so far PC#8: the reality

Venezia, Mar/Apr 20094th Philae post-launch workshop7 è Set of HK values ènominal èslightly different timing (seconds, harmless) PC#9

Venezia, Mar/Apr 20094th Philae post-launch workshop8 è Patch old software to allow MS oven via GC èno data compression èRomap in parallel (just in case) PC#10: the plan

Venezia, Mar/Apr 20094th Philae post-launch workshop9 è Tests first (GC heating, MS sniffing) èGo/NoGo è Software upload and verification (EAFT) èGo/NoGo è Test again (GC heating, MS sniffing) èGo/NoGo è Combined test 1 (absorption oven) èGo/NoGo è Combined test 2 (empty oven) PC#10: Details