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Oleg maev

Expected rates on FEBs in M2-M5 at 14 TeV, L~2x10^33Rates from FEBs (internal counters) have been taken in FILL 2733 (15.06.2012 - 8TeV, 4x10^32) with using the Chamber monitor tool and then they have been roughly interpolated (just with multiplying the measured rates by factor 10) to conditions at 14 TeV and L~2x10^33.Very noisy channels have been removed from this analysis but some noise could be introduced on the level of 10-15% at maximum.

Oleg Maev

8.10.12

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Oleg maev1

Next slides present the rates in kHz on hottest pads (R1-R3 – cathodes, R4 - anodes) for every chamber and are shown in simplified CMBs map for each station.

Oleg Maev

8.10.12

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Expected rates in hottest pads in m2 at 14 tev l 2x10 33
Expected rates in hottest pads in M2 at 14 TeV, L~ 2x10^33 – cathodes, R4 - anodes) for every chamber and are shown in simplified CMBs map for each station.

Oleg Maev

8.10.12

3


Expected rates in hottest pads in m3 at 14 tev l 2x10 33
Expected rates in hottest pads in M3 at 14 TeV, L~ 2x10^33 – cathodes, R4 - anodes) for every chamber and are shown in simplified CMBs map for each station.

Oleg Maev

8.10.12

4


Expected rates in hottest pads in m4 at 14 tev l 2x10 33
Expected rates in hottest pads in M4 at 14 TeV, L~ 2x10^33 – cathodes, R4 - anodes) for every chamber and are shown in simplified CMBs map for each station.

Oleg Maev

8.10.12

5


Expected rates in hottest pads in m5 at 14 tev l 2x10 33
Expected rates in hottest pads in M5 at 14 TeV, L~ 2x10^33 – cathodes, R4 - anodes) for every chamber and are shown in simplified CMBs map for each station.

Oleg Maev

8.10.12

6


Oleg maev2

Oleg Maev – cathodes, R4 - anodes) for every chamber and are shown in simplified CMBs map for each station.

Conclusion.All R1 regions and M2/M3 R2 will have pads with high inefficiency (>5%) due to dead time.M2R3 and M4/M5 R2 will be affected as well on a few percent level.M5R4 – depends from shielding from back-splashes (Throttling?)Effect of ineff. due to noise will be very high everywhere. Huge work to reduce the sources of noise has to be done in LS1&LS2.

8.10.12

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Oleg maev3

Oleg Maev – cathodes, R4 - anodes) for every chamber and are shown in simplified CMBs map for each station.

Expected rates in average on CMB in M2 at 14 TeV, L~ 2x10^33

8.10.12

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Oleg maev4

Oleg Maev – cathodes, R4 - anodes) for every chamber and are shown in simplified CMBs map for each station.

Expected rates in average on CMB in M3 at 14 TeV, L~ 2x10^33

8.10.12

9


Oleg maev5

Oleg Maev – cathodes, R4 - anodes) for every chamber and are shown in simplified CMBs map for each station.

Expected rates in average on CMB in M4 at 14 TeV, L~ 2x10^33

8.10.12

10


Oleg maev6

Oleg Maev – cathodes, R4 - anodes) for every chamber and are shown in simplified CMBs map for each station.

Expected rates in average on CMB in M5 at 14 TeV, L~ 2x10^33

8.10.12

11


Oleg maev7

Oleg Maev – cathodes, R4 - anodes) for every chamber and are shown in simplified CMBs map for each station.

Conclusion (average on CMB).Most of chambers in R1 region on M2/M3 and M2R2 will have high inefficiency (>5%) due to dead time.Some of CMBs in M2R1 and M4/M5 R1 will be affected as well on a few percent level.

8.10.12

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