1 The momentum measurement of 2ry particle emitted from neutrino interaction DONUT Meeting @FNAL DEC...
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Transcript of 1 The momentum measurement of 2ry particle emitted from neutrino interaction DONUT Meeting @FNAL DEC...
1
The momentum measurement of 2ry particle
emitted from neutrino interaction
DONUT Meeting @FNALDEC 10th-11th
B.D.Park, S.Takahashi and T.Furukawa
Nagoya univ. @ JAPAN
2
Contents
1. Criterion of primary track & how many tracks picked up by the condition
2. The distribution of RMS for High-Energy tracks after Fine-Alignment
3. Scattering distribution
4. Momentum measured ratio as a function of the slope in each module
5. Measured momentum vs. Limit & Momentum measurement error
6. Measured momentum vs. Spectrometer data (μ)
7. Data summary
3
Criterion of primary track and picked up the track
1. should start from vertex point or downstream plate of vertex point
2. consist of segments more than 3 segments (as track definition)
3. Impact parameter less than 5μm
=> Number of tracks / Number of events 634 / 168
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RMS for High-Energy tracks after Fine-Alignment
Entries 12013
RMS(x) 0.1198
RMS(y) 0.1233
Entries 3367
RMS(x) 0.0655
RMS(y) 0.0637
μm μm
μm μm
For all module
For Module 1
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RMS for High-Energy tracks after Fine-Alignment
Entries 1259
RMS(x) 0.1453
RMS(y) 0.1486
Entries 3134
RMS(x) 0.1010
RMS(y) 0.1093
μm μm
μm μm
For Module 2
For Module 3
7
RMS for High-Energy tracks after Fine-Alignment
Entries 857
RMS(x) 0.0941
RMS(y) 0.1082
Entries 499
RMS(x) 0.1128
RMS(y) 0.1041
μm μm
μm μm
For Module 4
For Module 5
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RMS for High-Energy tracks after Fine-Alignment
Entries 2734
RMS(x) 0.1025
RMS(y) 0.1059
Entries 163
RMS(x) 0.0760
RMS(y) 0.0664
μm μm
μm μm
For Module 7
For Module 8
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Momentum measured ratio as a function of the slope
tan θ
Nu
mb
er
of
track
Pro
bab
ili
ty
Entries 491
measured track
tried track
tan θ
32
Summary Ⅰ-1
368 Number of Measured tracks
47 Too short tracks
90 Not enough plate ( below the plate#10)
3 No Track
2 No map file
124 Not good alignment
(RMS for High-Energy tracks after Fine-Align less than 1μm)
33
Summary Ⅰ- 2
Total Good alignment
Bad connection
Bad alignment
Bad connection
Bad alignment
Bad connection
Need to
scan
Slip Module
4 1 3 0 0 0 1
22 1 10 0 9 2 2
20 13 1 0 6 0 3
32 0 13 10 3 6 4
7 2 2 0 3 0 5
28 18 7 0 3 0 7
11 0 11 0 0 0 8
124 35 47 10 24 8 Total