Post on 22-Feb-2016
description
Highlights fro TRCollaboration meetingCERN 12/11/2012
2
Experimental Setup
= active regions
View V
View U
Jura Saleve
z
y
x
- 2 views- 4 covers per view- 2 SRB read via VME
12/11/12
3
Beam ProfileThe instrumented straws showed the radial
beam profile En
tries
per
Cha
nnel
12/11/12
4
Entri
es p
er C
hann
el
Beam ProfileThe straws instrumented have shown the
radial beam profile
SRB 3 SRB 212/11/12
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Beam ProfileThe straws instrumented have shown the
radial beam profile En
tries
per
Cha
nnel
SRB 3 SRB 2
Missing straws
12/11/12
6
Entri
es p
er C
hann
el
Beam ProfileThe straws instrumented have shown the
radial beam profile Dead channel
SRB 3 SRB 212/11/12
7
Burst StructureAnd burst time structure
Even
ts/3
33m
s
SOB EOB12/11/12
8
Bad Words and Data Contamination Data suffers of contamination due to lost of part of
data structure, some times this is recognizable and data can be used. But in a lot of cases this is not possible
Spill Time Structure
Even
ts/3
33m
s
12/11/12
9
Bad Words and Data Contamination Data suffers of contamination due to lost of part of
data structure, some times this is recognizable and data can be used. But in a lot of cases this is not possible
Beam Profile Structure
Entri
es p
er C
hann
el
12/11/12
10
Bad Words and Data Contamination With the threshold equalization we have seen a
strange behavior, not present channels start to populate when at least one channel increase beyond 40Hz
Entri
es p
er C
hann
el *
Spill
widt
h
12/11/12
11
Bad Words and Data Contamination With the threshold equalization we have seen a
strange behavior, not present channels start to populate when at leas one channel increase beyond 40Hz
Entri
es p
er C
hann
el *
Spill
widt
h
12/11/12
12
Bad Words and Data Contamination With the threshold equalization we have seen a
strange behavior, not present channels start to populate when at leas one channel increase beyond 40Hz
Entri
es p
er C
hann
el *
Spill
widt
h
12/11/12
13
Data SelectionReadout problems -> data selection
◦ Mismatch between the SRBs number of triggers
◦ “Bad Words”◦ Thresholds ok from run 388, 1.25V before
Analysis performed on run 368, taken in low intensity conditions (0.1 x1011 prontons on T10) for CEDAR alignment
Quality cuts applied to data contamination (<5 per mill)
12/11/12
14
Run 368300 out of ~600 bursts match triggers
quality cut (same number of triggers in the SRBs)
132 bursts out of 300 good for data analysis (contamination lower than 5 per mill )
12/11/12
15
Results
Time (ns)
The corrected CHOD time has been used to find the T0 for all channels.
12/11/12
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Results (drift time all ch)Drift time measurement has been performed using the T0 from CHOD
Time (ns)12/11/12
17
Results (drift time ch 10)
Time (ns)
Drift time measurement has been performed using the T0 from CHOD
12/11/12
18
Results (wire distance ch 10)Wire distance measurement has been performed using the drift velocity curve measured during the test beam
Time (ns)12/11/12
19
Results (“assumed” drift velocity curve)
Drift Time (ns)
Wire
Dist
ance
(mm
)
12/11/12
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The End
12/11/12
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Run 368Good Data
12/11/12