March 02, 2009LHCb Muon Commissioning meeting 1 First week of chambers test Alessandro Cardini, Davide Pinci, Fernando Rodrigues, Maria Luisa Porto, Rafael.

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Presentation transcript:

March 02, 2009LHCb Muon Commissioning meeting 1 First week of chambers test Alessandro Cardini, Davide Pinci, Fernando Rodrigues, Maria Luisa Porto, Rafael Nobrega,

2 Threshold Scan Analysis Procedure for M1R4 chambers: 1)Verify the chamber with a threshold equal to 0.0 fC - we do this to found dead channels. 2)Verify the chamber with a threshold equal to 3.0 fC – search for noisy channels. 3)If a channel continued to be RED (noise > 100 Hz) if we change the threshold to 4.0 fC. We check the channel with the NOISE PLOT.

3 Good with 3fC: M1A.26C.R4.5A M1A.24C.R4.5A M1A.22C.R4.5A M1A.20C.R4.5A M1A.18C.R4.5A M1A.16C.R4.1A M1A.14C.R4.1A M1A.10C.R4.1A M1A.06C.R4.1A M1A.04C.R4.1A M1A.02C.R4.1A M1A.30A.R4.3A M1A.28A.R4.3A M1A.26A.R4.3A Good with 4fC: M1A.28C.R4.5A Dead Channels M1A.12C.R4.1A Noise Channels Communication error: M1A.30C.R4.5A M1A.08C.R4.1A Side A

4 Good with 3fC: M1C.26D.R4.5C M1C.24D.R4.5C M1C.22D.R4.5C M1C.20D.R4.5C M1C.18D.R4.5C M1C.16D.R4.__ M1C.12D.R4.__ M1C.10D.R4.__ M1C.08D.R4.__ M1C.06D.R4.__ M1C.04D.R4.__ M1C.02D.R4.__ Good with 4fC:Dead ChannelsNoise Channels Communication error: M1C.30D.R4.5C M1C.28D.R4.5C M1C.14D.R4.__ Side C Still to be connected to the LV supply: M1C.30B.R4.__ M1C.28B.R4.__

5 Install (on Friday): 18 chambers (side A), 17 chambers (side C), 1 chamber M1R3 Good: 27 chambers ok after threshold scan Chambers with dead channels: 01 chamber with two problematic channels Communication problem: 05 chambers Still to be connected to the LV supply: 02 chambers Summary of the first week of chambers test

6 Extra slides

7 A different procedure needs to be done for M1R3 chambers. Suggestion: The analysis plots, could be divided in two or the window needs to be bigger. Impossible to see if there are a dead channel

8 Suggestion for M1R3

9 BAD PROBABLY PAD CONNECTION GOOD Examples: