D. Attié, P. Colas, M. Lupberger, M. Riallot LCTPC WP Phone meeting 109 July 15, 2010 News from “Octopuce”

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Presentation transcript:

D. Attié, P. Colas, M. Lupberger, M. Riallot LCTPC WP Phone meeting 109 July 15, 2010 News from “Octopuce”

Gas: ArIso (95:5) V Ingrids = 290 V ! (275 V before) Gain ~550 Stable conditions (no spark) except hot spots (~8 nA) No trigger on cosmics Acquisition time: 0.5 s Efficiency to single e -  25 % News data at higher gain 2 July15, 2010LCTPC WP phone meeting #109

V Ingrids = 290V up to 300 V Unstable conditions Weak points 3 July15, 2010LCTPC WP phone meeting #109

Are we ready to go to DESY? Any idea how to fix the weak spots? First, we can make a long run at V Ingrids = 290V in Saclay to check the stability and robustness We could have a dedicated beam test of three days in October Beam test in Large Prototype ? 4 July15, 2010LCTPC WP phone meeting #109