| 1 Introduction | | 1 | |
| 1.1 The proton precession magnetometer |
| | 2 | |
| | 5 | |
| 1.3 Overview of magnetometer |
| | 12 | |
| 2 Polarization Coil and Platform | | 17 | |
| 2.1 Materials not allowed |
| | 17 | |
| 2.2 Wire for polarizing coil |
| | 18 | |
| 2.3 Purpose of polarizing coil |
| | 19 | |
| 2.4 Positioning polarizing coil |
| | 20 | |
| | 21 | |
| 2.6 Magnetic field strength due to coil |
| | 22 | |
| 2.7 Polarizing coil parts list |
| | 23 | |
| 2.8 Specifications of polarizing coil |
| | 25 | |
| 2.9 Construction of polarizing coil |
| | 25 | |
| 2.10 Tiltable platform parts list |
| | 26 | |
| 2.11 Construction of tiltable platform |
| | 29 | |
| 3 Pulse Controller | | 31 | |
| 3.1 Purpose of pulse controller |
| | 31 | |
| 3.2 Quenching the current |
| | 32 | |
| | 33 | |
| 3.4 Advantage of using multiple MOSFETs |
| | 34 | |
| 3.5 Pulse controller circuit description |
| | 35 | |
| 3.6 Microcontroller circuit description |
| | 38 | |
| 3.7 Microcontroller software |
| | 39 | |
| | 41 | |
| 3.9 Assembly and enclosure |
| | 42 | |
| 3.10 Pulse controller parts list |
| | 51 | |
| 4 Sensor Coil | | 57 | |
| 4.1 Sensor coil requirements |
| | 57 | |
| 4.2 How the coils are wired together |
| | 60 | |
| 4.3 How to connect cable to coils |
| | 61 | |
| 4.4 Specifications of sensor coil |
| | 62 | |
| 4.5 Sensor coils parts list |
| | 62 | |
| 4.6 Construction of sensor coils |
| | 63 | |
| 5 Amplifier | | 69 | |
| 5.1 Why a differential amplifier is best |
| | 70 | |
| 5.2 Why a low noise amplifier is needed |
| | 71 | |
| 5.3 Description of amplifier circuit |
| | 71 | |
| 5.4 Supplying power to the amplifier |
| | 73 | |
| 5.5 Layout of amplifier circuit |
| | 74 | |
| 5.6 Capacitors at amplifier input |
| | 75 | |
| 5.7 Estimating precession frequency |
| | 78 | |
| | 79 | |
| 6 Data Acquisition and PC Control | | 87 | |
| 6.1 What sampling rate to use |
| | 88 | |
| 6.2 What resolution to use |
| | 89 | |
| 6.3 How long to take data |
| | 90 | |
| 6.4 The ADC board used in the Magnum |
| | 90 | |
| 6.5 Pulse controller and data acquisition software |
| | 92 | |
| 7 Data Processing and Analysis | | 101 | |
| | 101 | |
| 7.1.1 Why it improves signal to noise ratio |
| | 101 | |
| 7.1.2 Limits due to MOSFET slow down |
| | 102 | |
| | 103 | |
| 7.3 Spectral analysis using the FFT |
| | 108 | |
| 7.4 Converting bin number to actual frequency |
| | 112 | |
| 7.5 High resolution spectrum for peak location |
| | 113 | |
| A Magnum Control Program | | 117 | |
| B Microcontroller Program | | 129 | |
$ 24.95 (Come calcoliamo i 
