Signals from the Subatomic World: How to Build a Proton Precession Magnetometer

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Abrazol Publishing
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Contents

46 Construction of sensor coils
62
Amplifier
68
51 Why a differential amplifier is best
69
52 Why a low noise amplifier is needed
70
54 Supplying power to the amplifier
72
55 Layout of amplifier circuit
73
56 Capacitors at amplifier input
74
57 Estimating precession frequency
77

210 Tiltable platform parts list
25
211 Construction of tiltable platform
28
Pulse Controller
30
32 Quenching the current
31
33 How a MOSFET works
32
34 Advantage of using multiple MOSFETs
33
35 Pulse controller circuit description
34
36 Microcontroller circuit description
37
37 Microcontroller software
38
38 Power supply
40
39 Assembly and enclosure
41
310 Pulse controller parts list
50
Sensor Coil
56
42 How the coils are wired together
59
43 How to connect cable to coils
60
44 Specifications of sensor coil
61
58 Amplifier parts list
78
Data Acquisition and PC Control
86
61 What sampling rate to use
87
62 What resolution to use
88
63 How long to take data
89
65 Pulse controller and data acquisition software
91
Data Processing and Analysis
100
712 Limits due to MOSFET slow down
101
72 Filtering the data
102
73 Spectral analysis using the FFT
107
74 Converting bin number to actual frequency
111
75 High resolution spectrum for peak location
112
Magnum Control Program
116
Microcontroller Program
128
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