Table of Contents

Broken Bonds

Broken Bonds

Noise data available offline

The following data was processed using STNZSMonitor by Mark Tobin:

2008 and 2009 data, files abailable in :
```
lhcb@ckm:~/noise/VFS400_NOTP/rootFiles
```
2010 data (until june) was taken with the TEST recipe, files in:
```
lhcb@ckm:~/noise/TEST/rootFiles
```

How to reate a compilation of noise data:

create a new directory e.g:
```
lhcb@ckm:~/noise/symLinks
```
create symbolic links to all the .root files you want to include in the plots. (The script createSymLinks.sh might be useful).

Noise plots

Plots were generated for the following sectors affected by broken bonds:

TELL1	Sector	first observed	Taken out	noise distributions and noise vs.time
				plots for broken channels (range)
2	3	June 08	June 08	-
3	3	Nov 08	still installed	1860-2048
5	1	June 08	Nov 08	512-730
5	2	June 08	Nov 08	1024-1535
6	1	June 08	Nov 08	512-660
6	2	June 08	Nov 08	1024-1280, 1095, 1426
10	3	Apr 09	still installed	1620-1660
35	5	23.10.2008	still installed	2560-2700
46	4	June 08	June 09	2300-2560

Noise pattern (sector): For all sectors listed above the noise pattern (noise as a function of the channel number) of the given sector is plotted for each run listed in the directory symLinks. HV is on (250 V) and there are >=4k Evts used to compute the noise. Plots available:
```
<code> lhcb@ckm:~/noise/symlinks/plots/NoisePlots_tTELL1NUMBER_sSECTRORNUMBER/
```

Plots for broken channels (and/or candidates): for all channels having bonds on the innermost bond row two plots (noise distribution, noise as a function of the time) were generated in the range indicated in the table above. Plots available:
```
 lhcb@ckm:~/noise/symLinks/plots/NoiseHisto_tTELL1NUMBER/ 
```

How to make these plots

Count low noise channels

Plots (number of bad channels as function of time, for each TELL1, for all TT) available:
```
lhcb@ckm:~/noise/plots/nBadChannels/>
```
How to make these plots