Pp2pp: raw silicon data

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Pp2pp raw silicon data

• Pp2pp Collaboration meeting
• Pedestals and sigmas
• Hit clusters
• Dead channels
• Root n-tuple

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3/18/04
Igor Alekseev (ITEP)
2
Numbering scheme
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3/18/04
Igor Alekseev (ITEP)
3
Pedestals and sigmas

• Exclude preamp reset bunch numbers
• Exclude hits (above 3 sigma)

RUN 23
1
3/18/04
Igor Alekseev (ITEP)
4
Pedestal variation
RUN23 RUN06
1
3/18/04
Igor Alekseev (ITEP)
5
Sigma
RUN 23
1
3/18/04
Igor Alekseev (ITEP)
6
Sigma variation
RUN23 RUN06
1
3/18/04
Igor Alekseev (ITEP)
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Hit clusters

• Strip threshold 7 units
• Clusters wider 5 strips excluded
• Clusters with total charge above 300 units
  excluded
• Table to define threshold for each cluster width
  (1-5) and for each silicon
• Only upto 30 hits per silicon written into
  n-tuple

1
3/18/04
Igor Alekseev (ITEP)
8
Energies for different widths
26
20
36
46
1
3/18/04
Igor Alekseev (ITEP)
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Energies for different widths (2)
20
26
46
36
1
3/18/04
Igor Alekseev (ITEP)
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Hit w1 profile
RUN 23
1
3/18/04
Igor Alekseev (ITEP)
11
Dead channels

• Bad sigma
• No hits

Si SEQ Chain SVX Strip RP 16 5 A 0 50 1UP 20
6 A 2 1 1DOWN 20 6 A 2 71 1DOWN 20 6 A 2
87 1DOWN 20 6 A 2 103 1DOWN 20 6 A 2 119 1D
OWN
1
3/18/04
Igor Alekseev (ITEP)
12
Dead channels
RUN 23
RUN 23
1
3/18/04
Igor Alekseev (ITEP)
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N-tuple structure
General
Number Type Bunch Flag
N W30 E30 X30
SiNN
ADC48 TDC48
SCIL
1
3/18/04
Igor Alekseev (ITEP)
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The flag
RUN 23
Number of hits in one event above 30 in one
silicon
1
3/18/04
Igor Alekseev (ITEP)