Transcript ppt

GLAST LAT Project
May 27, 2005
TKR Studies for Tower 4
• We investigated Two Towers runs with different readout to
figure out if there are some problems in the DAQ .
– Runs Used:
• 135002052 (Baseline Run)
• 135002057 (TKR Left Readout)
• 135002103 (TKR Right Readout)
• No TEM Diagnostic on the Baseline Run
• Tower 4 selected : GemTkrVector [4] == 1
Stefano Germani & Monica Pepe
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GLAST LAT Project
May 27, 2005
TkrNumTracks
• Baseline
• Left
• Right
Stefano Germani & Monica Pepe
• No Cuts
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GLAST LAT Project
May 27, 2005
TkrNumVertices
• Baseline
• Left
• Right
Stefano Germani & Monica Pepe
• No Cuts
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GLAST LAT Project
GemConditionArrivalTimeTkr
• Baseline
• Left
• Right
• No Cuts
TW
Stefano Germani & Monica Pepe
May 27, 2005
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GLAST LAT Project
May 27, 2005
Applied Cuts
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GemConditionWord = 2 ( only TkrTrigger)
MIP selection: 0.6 < CalMIPRatio < 1.3
TkrNumTracks = 1
TkrNumVertices = 1
Tkr1ZDir < -0.9
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GLAST LAT Project
May 27, 2005
Tkr1ZDir
• Baseline
• Left
• Right
No Cuts
• Baseline
• Left
• Right
Vertical Muons
Cuts applied
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GLAST LAT Project
May 27, 2005
GemConditionWord
• Baseline
• Left
• Right
• Baseline
• Left
• Right
Stefano Germani & Monica Pepe
No Cuts
Cuts applied
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GLAST LAT Project
May 27, 2005
Number of triggered layers
• Left
• Right
No Cuts
• Left
• Right
Cuts applied
Stefano Germani & Monica Pepe
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GLAST LAT Project
May 27, 2005
TotClusters
• No Cuts Applied
• Cuts Applied
Tower 0
• No Cuts Applied
• Cuts Applied
Not Filled?
Stefano Germani & Monica Pepe
Tower 4
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GLAST LAT Project
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Trigger Layer Map: Low = TkrReq[..., end =0]
High = TkrReq[..., end =1]
Left Readout
All Cuts applied
Right Readout
Stefano Germani & Monica Pepe
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GLAST LAT Project
May 27, 2005
Trigger Layer Map: Low = TkrReq[..., end =0]
TkrReq
(Layer
Map) end =1]
High
= TkrReq[...,
• Left Readout - TkrReq=Low
• Right Readout – TkrReq=High
All Cuts applied
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GLAST LAT Project
May 27, 2005
Tkr1Y0 vs Tkr1X0
Left Readout
Same Entries
All Cuts applied
Right Readout
Same Entries
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GLAST LAT Project
Tkr1Y0 & Tkr1X0
May 27, 2005
(Low And High TkrReq = 1 in the Same Layer)
Left Readout
All Cuts applied
Right Readout
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GLAST LAT Project
May 27, 2005
Trigger Layer Map: Low = TkrReq[..., end =0]
TkrReq (Layer
Top-Bottom)
HighMap
= TkrReq[...,
end =1]
• Left Readout - TkrReq=Low
• Right Readout – TkrReq=High
TkrReq (Layer Map)
• Left Readout - TkrReq=Low
• Right Readout – TkrReq=High
From Bottom
(tray<9)
All Cuts applied
From Top
(tray>=9)
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Trigger Layer Map: Low = TkrReq[..., end =0] May 27, 2005
High = TkrReq[..., end =1]
GLAST LAT Project
X Left Side
X Right Side
• Left Readout - TkrReq=Low
• Right Readout – TkrReq=High
All Cuts applied
Y Left Side
Stefano Germani & Monica Pepe
Y Right Side
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TO DO List
• Compare Hit Strip distribution (from DIGI Rootple) for left/right
readout
• Compare tracks entering at centre or edges of the tower
• Compare Events at start/end of Trigger Windows
• Compare Events contained in one tower and events crossing
towers (study events in tower 4 that were triggered in tower 0)
• Timing studies
• .....
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