Edwin Chng. Contents Decay Solenoid Electron Peak Muon Peak Slab Hits Appendix Slide 2.
-
Upload
tamsyn-randall -
Category
Documents
-
view
222 -
download
0
Transcript of Edwin Chng. Contents Decay Solenoid Electron Peak Muon Peak Slab Hits Appendix Slide 2.
Data Analysis
Edwin Chng
ContentsDecay SolenoidElectron PeakMuon PeakSlab HitsAppendix
Slide 2
Decay Solenoid (DS)DS current reference at 669
Amps(run 2200)DS current varied from -15% to
+20%TofTree and TofTrace ran on data to
extract mean of x,y and the spread of the beam (σ)
Run Number 2191
2192
2193
2195
2196
2197
2198
2200
Current / Amps 736 602 803 769 702 635 568 669
Slide 3
Slide 4
Results
550.00 600.00 650.00 700.00 750.00 800.00
-25
-15
-5
5
15
25
35
X
DS current / Amps
Mean
X /
mm
Reference
Slide 5
550.00 600.00 650.00 700.00 750.00 800.00
-25
-15
-5
5
15
25
35
Y
DS current / Amps
Mean
y /
mm
Reference
Slide 6
550.00 600.00 650.00 700.00 750.00 800.00 850.0050
55
60
65
70
75
80
85
90
XY
Decay Solenoid Current / Amps
σ/m
m
Reference
Reference
Slide 7
Electron PeakValue of electron peak investigated
for runs 1592-2895Value expected to stay constant as
electrons are relativisticMissing data given in appendix TofTree code modified and ran on
dataElectron data fitted with Gaussian
curve (see graph) Slide 8
Slide 9
Electron PeakData extracted include mean with associated
error and the number of the electronsData with 10 counts or less eliminated from
graph and also bad fits
Slide 10
Results
25.3
25.3
2
25.3
4
25.3
6
25.3
825
.4
25.4
2
25.4
4
25.4
6
25.4
825
.5
25.5
2
25.5
4
25.5
6
25.5
825
.6
25.6
2
25.6
4
25.6
6
25.6
825
.7
Mor
e0
20
40
60
80
100
120
140
Histogram
Bin
Fre
qu
en
cy
Mean 25.48S.D. 0.04
Slide 11
1592 1792 1992 2192 2392 2592 279225.3
25.35
25.4
25.45
25.5
25.55
25.6
25.65
25.7Mean
Run Number
tim
e/n
s
Slide 12
Backward calculation showed the electrons to have a velocity larger than speed of light
Distance – 7764 mmAverage time – 25.48 nsSpeed – 1.017 c
Slide 13
Muon PeakData analysed for reference runs
(see appendix for list of reference run numbers)
TofTree ran on data with mean, count and most probable extracted
No fitting was done in this case because of the lack of a suitable theoretical fit
Slide 14
Results
2204 2304 2404 2504 2604 2704 280428.1
28.15
28.2
28.25
28.3
28.35
28.4
28.45
28.5
Mean
Run Number
tim
e/n
s
Slide 15
Results
2204 2304 2404 2504 2604 2704 280428.1
28.15
28.2
28.25
28.3
28.35
28.4
28.45
28.5
Mean
Run Number
tim
e/n
s
Positive Polarity
Negative Polarity
Slide 16
Positive Polarity
Negative Polarity
Slide 17
28.1
28.1
2
28.1
4
28.1
6
28.1
828
.2
28.2
2
28.2
4
28.2
6
28.2
828
.3
28.3
2
28.3
4
28.3
6
28.3
828
.4
28.4
2
28.4
4
28.4
6
28.4
828
.5
Mor
e0
2
4
6
8
10
12
14
16
18
Histogram
Bin
Fre
qu
en
cy Mean 28.29
S.D. 0.07
Slide 18
2204 2304 2404 2504 2604 2704 280428
28.1
28.2
28.3
28.4
28.5
28.6
28.7
28.8
Most Probable
Run Number
tim
e/n
s
Slide 19
Slab hitsData analysed for reference runsData extracted for successful slab
hits (green) for Tof0(10slabs), Tof1(7slabs), Tof2(10slabs)
Slide 20
Results
2204 2304 2404 2504 2604 2704 28040
0.02
0.04
0.06
0.08
0.1
0.12
tof0 slab hits (x)
Bin 2
Run Number
Fra
cti
on
Slide 21
2204 2304 2404 2504 2604 2704 28040
0.02
0.04
0.06
0.08
0.1
0.12
tof0 slab hits (y)
Bin 2
Run Number
Fra
cti
on
Slide 22
2204 2304 2404 2504 2604 2704 28040
0.01
0.02
0.03
0.04
0.05
0.06
0.07
0.08
0.09
0.1
tof1 slab hits (x)
Bin 1
Run Number
Fra
cti
on
Slide 23
2204 2304 2404 2504 2604 2704 28040
0.01
0.02
0.03
0.04
0.05
0.06
0.07
0.08
0.09
0.1
tof1 slab hits (y)
Bin 1
Run Number
Fra
cti
on
Slide 24
2204 2304 2404 2504 2604 2704 28040
0.02
0.04
0.06
0.08
0.1
0.12
0.14
0.16
0.18
0.2
tof2 slab hits (x)
Bin 4
Run Number
Fra
cti
on
Slide 25
2204 2304 2404 2504 2604 2704 28040
0.05
0.1
0.15
0.2
0.25
tof2 slab hits (y)
Bin 4
Run Number
Fra
cti
on
Slide 26
AppendixMissing data : 1600 – 1623, 1653, 1760, 1763 – 1765,
1767 – 1774, 1776 – 1778, 1781 – 1783, 1787, 1791 – 1796 , 1801 – 1804, 1828, 1840 – 1841, 1864 ,1866 1869, 1872 – 1873, 1875, 1877 – 1878, 1880 – 1881, 1889 – 1896, 1899 – 1900, 1906, 1908, 1916 – 1921, 1925, 1927, 1932 – 1933, 1936, 1938 – 1941, 1944, 1949, 1952, 1956, 1960, 1962, 1970 – 1971, 2046, 2049, 2086, 2088, 2090, 2239, 2323 – 2340, 2405 – 2410, 2589
Reference runs: 2204 – 2211, 2223, 2238, 2241, 2243-2245, 2253-2256, 2272 – 2276, 2303, 2396, 2398, 2423, 2444, 2446, 2462, 2466, 2482, 2498 – 2502, 2514, 2525, 2534, 2538 – 2539, 2553 – 2555, 2561 – 2562, 2640, 2702, 2726, 2734, 2743, 2767, 2803, 2846, 2873
Slide 27
Thank You